The Anodizing Rectifier delivers precise high-voltage control (up to 120V+) for hard anodizing. It supports currents from hundreds to tens of thousands of amps. Unlike decorative processes at 20V–24V, its high-frequency switching slashes oxide layer formation time by 30% and energy use. Compact design ensures stable current, enabling uniform Al₂O₃ films for corrosion-resistant, ultra-hard surfaces. Post-treatments like hot-water sealing integrate smoothly, boosting durability and color uniformity in dyed parts. With ±1% voltage stability, it produces repeatable aerospace and architectural components while reducing physical footprint and downtime.

» Product Applications

Anodizing Rectifier drives the electrochemical formation of aluminum’s oxide layer (Al₂O₃), critical for industrial applications demanding corrosion resistance and structural integrity. By delivering stable current outputs, it enables uniform growth of protective coatings with adjustable thickness (5–25μm), essential for automotive trim exposed to road salts or marine-grade architectural window frames. The technology ensures surfaces achieve 500–900 HV hardness for scratch-resistant smartphone casings while maintaining dielectric properties for heat sink insulation in 5G equipment. Post-anodizing, the rectifier-compatible sealing process locks in organic dyes for fade-resistant facade panels and medical device markings. Its adaptive voltage control (12–120V DC) supports both Type II decorative finishes on consumer electronics and Type III hard coatings for aircraft landing gear components, achieving 60% faster cycle times versus traditional rectifiers through pulsed current optimization.

1.Field application diagram：

2.Industry application examples:

» Technology Advantages

› A very thin coating

› Excellent corrosion protection

› Good electrical insulator

› Fade resistant in sunlight

› Environmentally friendly finish

› Inexpensive

› Extremely durable, hard, abrasion resistant and long lasting

» Role of Anodizing

Corrosion Resistance

Forms a protective oxide barrier against saltwater, chemicals, and atmospheric exposure, critical for marine hardware, aircraft components, and automotive underbody parts.

Surface Hardening

Achieves 300–500 HV surface hardness (vs. ~100 HV for bare aluminum), ideal for hydraulic systems, machinery guides, and industrial tooling requiring wear resistance.

Aesthetic Customization

Enables dyeing (organic/inorganic pigments) and electrolytic coloring for architectural façades, consumer electronics casings, and luxury packaging.

Electrical Insulation

Provides dielectric strength (15–25 V/μm) for heat sinks, PCB enclosures, and power distribution components needing non-conductive surfaces.

Adhesion Promotion

Microporous structure enhances bonding for powder-coated window frames, adhesive-mounted automotive trims, and composite aerospace panels.

Abrasion Resistance

Extends service life of conveyor components, firearm parts, and offshore rig equipment exposed to sand, grit, or high friction.

Thermal Management

Improves heat dissipation in LED housings, server racks, and EV battery trays via oxide layer’s emissivity (ε ≈ 0.7–0.8).

» Types of Anodizing

Anodizing rectifiers supply regulated current and voltage to electrochemically generate aluminum oxide layers, with core models such as the Aluminum Anodizing Rectifier (hard coating) and DC/AC Coloring Rectifier (integrated dyeing), each engineered for distinct process parameters.

› Aluminum Anodizing Rectifier

Function: Delivers direct current (DC) to form a protective oxide layer on aluminum.

Features:

Precise Voltage Control: Ensures optimal oxide film formation.

Stable Current: Prevents defects like uneven layers.

Energy Efficient: High-frequency switching technology reduces energy use.

Applications: Used in aerospace, automotive, and construction for corrosion-resistant aluminum products.

› DC/AC Coloring Rectifier

Function: Allows for both DC and AC currents to enable precise color effects in anodizing while maintaining the oxide layer’s integrity.

Features:

Dual Current Output: Enables fine control over color development.

Energy Efficiency: High-frequency switching reduces energy consumption.

These rectifiers ensure efficient, high-quality anodizing results tailored to industry needs.

» Cooling Type for Anodizing

Air Cooling:Heat dissipation fan + air duct + comb heat sink

Water Cooling：Built-in water circulation line

» Technical Parameters

» Solution

Liyuan will keep up with the world’s latest technology closely, and uphold the concept of providing customers with high-quality power supplies and professional integrated services.
With advanced design and rich experience in rectifier manufacturing, we will provide the best power solutions as well as the most stable and efficient power supply for users both at home and abroad.

» Technical Capability

LIYUAN rectifier is the most competitive brand in China

Company relies on strong technology research and development cooperation basis, created a number of advanced technology, in recent 3 years amounted to more than 30 to apply for a patent, which has nearly 10 patents of invention.

Equipped with the national electric power transformation and control engineering technology research center (branch), and has set up a loan enterprise academician workstation.

Strict implementation of ISO quality management system, and through the CE safety certification, has been implementing ERP management for many years, to achieve the network, systematic computer control, the formation of a standard, efficient modern management system.

» Qualification certification

Liyuan adhere to innovation and the continuous improvement of power conversion efficiency and product quality.

The increasing R&D investment every year, and cooperation with China’s well-known universities, we has established the research center of national electric power conversion and control engineering technology.

Especially the related core patents of high-power synchronous rectifier power supply, stay ahead of the whole industry in China.

The ISO 9001 quality management system has been fully implemented in Liyuan, including quality inspection of components in warehouse, production process inspection, and final product inspection.

We adopt advanced scientific quality management system and the most stringent testing methods in the whole process to ensure the stability and reliability of products.

» Service

› Packing

1.Small size rectifier packing in carton box separately.

2.Large size rectifier will be packed in wooden case.

3.We guarantee that all the packing is intact when it reaches its destination.

› Shipping

1.30-45 Days after payment.

2.Transport: DHL, FEDEX, UPS, Air shipping, Boat shipping

3.You may choose our shipping partner or your own partner.

› Maintenance

We are pleasant to share our theory and experience on equipment maintenance with users.

We are pleasant to interact with users to collect their tips and know-hows on equipment maintenance.

The module “Maintenance” here is intended to help users solve various problems they possibly encounter during equipment maintenance…

If you need other power anodizing rectifier, we can custom design them according to customer requirements. Please contact us.

Looking for a 1250A 12V DC rectifier for aluminum hard anodizing? Liyuan Haina Rectifier, a professional manufacturer with 27+ years specializing in industrial rectifiers, supplies global clients including the United States, Canada, Britain, Italy, Spain, South Africa, Russia, the UAE, Japan, South Korea, Malaysia, etc. Our advanced factory delivers cost-effective Made-in-China solutions, with competitive prices and customizable options. Contact us for sales inquiries.

The post 1250A 12V DC Rectifier for Aluminum Hard Anodizing appeared first on Electroplating Surface Treatment.

In a 200A 36V electroplating rectifier for surface treatment, after the AC input voltage is filtered by a rectifier circuit, high-voltage DC power is obtained. The “variable frequency conversion” stage inverts this high-voltage direct current into approximately 30kHz high-frequency alternating current. This high-frequency AC is then transformed into secondary voltage via a high-frequency transformer and filtered through a high-frequency rectifier circuit to produce the required output voltage. The ​Electroplating Rectifier Power Supply employs a control circuit to sample output voltage and current. These sampled signals undergo closed-loop feedback to generate pulse width modulation (PWM) signals, which regulate the inverter circuit and maintain stable output voltage/current – a critical requirement for precision electroplating applications.

» Product Applications

Manufacturers widely use electroplating rectifier equipment for various surface treatment applications, including PCB electroplating, hard chrome coating, copper plating, nickel plating, zinc plating, gold plating, tin plating, and silver plating, among other metal finishing.

1.Field application diagram：

2.Industry application examples:

» Technology Advantages

› Modular parallel connection

› Optional N+1 redundant backup

› Capable of online hot maintenance

› RS485 digital control function

› Low-voltage MOS tube rectification

› High power factor, high efficiency

› Reasonable structural design

› Effective sealed isolation

› No water joint design inside the unit

› Practical and effective multiple protection system

› Full soft switch technology

› High reliability

› Low noise, high protection level

» Role of electroplating

Protection Against Corrosion

– Shields metal surfaces from rust and chemical damage (e.g., zinc plating on steel).

Increased Wear Resistance

– Hard coatings (e.g., chromium plating) reduce friction and extend part life.

Improved Appearance

– Adds shiny, decorative finishes (e.g., gold plating on jewelry, chrome on car parts).

Better Electrical Conductivity

– Used in electronics (e.g., copper plating on circuit boards).

Enhanced Solderability

– Improves bonding in electronic components (e.g., tin plating).

Repair of Worn Parts

– Restores dimensions and functionality (e.g., rebuilding engine components).

Special Industrial Uses

– Provides heat resistance (e.g., nickel plating in aerospace).

– Used in medical devices (e.g., biocompatible coatings).

» Types of electroplating

› Copper Plating

Purpose: Enhances adhesion for subsequent layers and corrosion resistance.

Note: Prone to oxidation (forms non-conductive copper oxide/green patina). Requires protective coatings.

​› Nickel Plating

Purpose: Used as a base layer or decorative finish; improves corrosion/wear resistance. Electroless nickel offers chrome-like durability.

Note: Magnetic properties limit use in electronics (e.g., DIN/N connectors) to avoid signal interference.

​› Gold Plating

Purpose: Optimizes conductive contact impedance and signal transmission.

Key: High stability but costly.

​› Palladium-Nickel Plating

Purpose: Superior signal transmission and wear resistance vs. gold.

Advantage: Combines palladium’s corrosion resistance with nickel’s hardness.

​› Tin-Lead Plating

Purpose: Improves solderability.

Trend: Phased out due to lead concerns; replaced by bright/matte tin alternatives.

​› Silver Plating

Purpose: Best conductivity and signal performance.

Note: Conducts even when oxidized but tarnishes over time. Higher cost.

​Selection Criteria

Match plating type to application needs: corrosion/wear resistance, conductivity, cost, and environmental regulations.

» Elements of Electroplating

› Cathode
The object to be plated (e.g., connector terminals or metal surfaces) where metal ions deposit into a solid coating.

› Anode

​Soluble Anode: Made of the plating metal. Dissolves during electrolysis to replenish metal ions in the solution.

​Insoluble Anode: Used for precious metals (e.g., white gold, iridium oxide). Does not dissolve but supplies electrons for reduction.

› Plating Solution
Contains ions of the target metal. Composition and concentration determine coating thickness, adhesion, and appearance.

› Plating Tank

Materials: Must resist corrosion and temperature fluctuations (e.g., polypropylene, titanium alloys).

Role: Stores solution and maintains stable plating conditions.

› Rectifier

Converts AC to DC power to drive electrolysis.

Adjust voltage/current to control deposition speed and coating thickness.

› Auxiliary Equipment

​Filters: Remove impurities from the solution.

​Heaters: Maintain solution temperature.

​Stirrers: Ensure uniform mixing.

» Component Part for Electroplating

» Cooling Type for Electroplating

Air Cooling:Heat dissipation fan + air duct + comb heat sink

Water Cooling：Built-in water circulation line

» Technical Parameters

» Solution

Liyuan will keep up with the world’s latest technology closely, and uphold the concept of providing customers with high-quality power supplies and professional integrated services.

With advanced design and rich experience in rectifier manufacturing, we will provide the best power solutions as well as the most stable and efficient power supply for users both at home and abroad.

» Technical Capability

LIYUAN rectifier is the most competitive brand in China

Company relies on strong technology research and development cooperation basis, created a number of advanced technology, in recent 3 years amounted to more than 30 to apply for a patent, which has nearly 10 patents of invention.

Equipped with the national electric power transformation and control engineering technology research center (branch), and has set up a loan enterprise academician workstation.

Strict implementation of ISO quality management system, and through the CE safety certification, has been implementing ERP management for many years, to achieve the network, systematic computer control, the formation of a standard, efficient modern management system.

» Qualification certification

Liyuan adhere to innovation and the continuous improvement of power conversion efficiency and product quality.

The increasing R&D investment every year, and cooperation with China’s well-known universities, we has established the research center of national electric power conversion and control engineering technology.

Especially the related core patents of high-power synchronous rectifier power supply, stay ahead of the whole industry in China.

The ISO 9001 quality management system has been fully implemented in Liyuan, including quality inspection of components in warehouse, production process inspection, and final product inspection.

We adopt advanced scientific quality management system and the most stringent testing methods in the whole process to ensure the stability and reliability of products.

» Service

› Packing

1.Small size rectifier packing in carton box separately.

2.Large size rectifier will be packed in wooden case.

3.We guarantee that all the packing is intact when it reaches its destination.

› Shipping

1.30-45 Days after payment.

2.Transport: DHL, FEDEX, UPS, Air shipping, Boat shipping

3.You may choose our shipping partner or your own partner.

› Maintenance

We are pleasant to share our theory and experience on equipment maintenance with users.

We are pleasant to interact with users to collect their tips and know-hows on equipment maintenance.

The module “Maintenance” here is intended to help users solve various problems they possibly encounter during equipment maintenance…

If you need other power electroplating rectifiers, we can custom design them according to customer requirements. Please contact us.

Are you looking for 200A 36V electroplating rectifier for surface treatment? Liyuan Haina Group is one of the professional manufacturers and suppliers in this field. With over 27 years of focus on R&D, design, production, sales, and technical services for industrial rectifiers, we have already exported our products to the United States, Canada, India,Pakistan, Britain, Italy, Spain, South Africa, Russia, the UAE, Japan, South Korea, Malaysia, and other parts of the world. Equipped with a productive factory, we warmly welcome you to purchase our high-quality, Made-in-China products at competitive prices or try our customized service.

The post 200A 36V Electroplating Rectifier for Surface Treatment appeared first on Electroplating Surface Treatment.

The Anodizing Rectifier delivers precise high-voltage control (up to 120V+) for hard anodizing. It supports currents from hundreds to tens of thousands of amps. Unlike decorative processes at 20V–24V, its high-frequency switching slashes oxide layer formation time by 30% and energy use. Compact design ensures stable current, enabling uniform Al₂O₃ films for corrosion-resistant, ultra-hard surfaces. Post-treatments like hot-water sealing integrate smoothly, boosting durability and color uniformity in dyed parts. With ±1% voltage stability, it produces repeatable aerospace and architectural components while reducing physical footprint and downtime.

» Product Applications

Anodizing Rectifier drives the electrochemical formation of aluminum’s oxide layer (Al₂O₃), critical for industrial applications demanding corrosion resistance and structural integrity. By delivering stable current outputs, it enables uniform growth of protective coatings with adjustable thickness (5–25μm), essential for automotive trim exposed to road salts or marine-grade architectural window frames. The technology ensures surfaces achieve 500–900 HV hardness for scratch-resistant smartphone casings while maintaining dielectric properties for heat sink insulation in 5G equipment. Post-anodizing, the rectifier-compatible sealing process locks in organic dyes for fade-resistant facade panels and medical device markings. Its adaptive voltage control (12–120V DC) supports both Type II decorative finishes on consumer electronics and Type III hard coatings for aircraft landing gear components, achieving 60% faster cycle times versus traditional rectifiers through pulsed current optimization.

1.Field application diagram：

2.Industry application examples:

» Technology Advantages

› A very thin coating

› Excellent corrosion protection

› Good electrical insulator

› Fade resistant in sunlight

› Environmentally friendly finish

› Inexpensive

› Extremely durable, hard, abrasion resistant and long lasting

» Role of Anodizing

Corrosion Resistance

Forms a protective oxide barrier against saltwater, chemicals, and atmospheric exposure, critical for marine hardware, aircraft components, and automotive underbody parts.

Surface Hardening

Achieves 300–500 HV surface hardness (vs. ~100 HV for bare aluminum), ideal for hydraulic systems, machinery guides, and industrial tooling requiring wear resistance.

Aesthetic Customization

Enables dyeing (organic/inorganic pigments) and electrolytic coloring for architectural façades, consumer electronics casings, and luxury packaging.

Electrical Insulation

Provides dielectric strength (15–25 V/μm) for heat sinks, PCB enclosures, and power distribution components needing non-conductive surfaces.

Adhesion Promotion

Microporous structure enhances bonding for powder-coated window frames, adhesive-mounted automotive trims, and composite aerospace panels.

Abrasion Resistance

Extends service life of conveyor components, firearm parts, and offshore rig equipment exposed to sand, grit, or high friction.

Thermal Management

Improves heat dissipation in LED housings, server racks, and EV battery trays via oxide layer’s emissivity (ε ≈ 0.7–0.8).

» Types of Anodizing

Anodizing rectifiers supply regulated current and voltage to electrochemically generate aluminum oxide layers, with core models such as the Aluminum Anodizing Rectifier (hard coating) and DC/AC Coloring Rectifier (integrated dyeing), each engineered for distinct process parameters.

› Aluminum Anodizing Rectifier

Function: Delivers direct current (DC) to form a protective oxide layer on aluminum.

Features:

Precise Voltage Control: Ensures optimal oxide film formation.

Stable Current: Prevents defects like uneven layers.

Energy Efficient: High-frequency switching technology reduces energy use.

Applications: Used in aerospace, automotive, and construction for corrosion-resistant aluminum products.

› DC/AC Coloring Rectifier

Function: Allows for both DC and AC currents to enable precise color effects in anodizing while maintaining the oxide layer’s integrity.

Features:

Dual Current Output: Enables fine control over color development.

Energy Efficiency: High-frequency switching reduces energy consumption.

These rectifiers ensure efficient, high-quality anodizing results tailored to industry needs.

» Cooling Type for Anodizing

Air Cooling:Heat dissipation fan + air duct + comb heat sink

Water Cooling：Built-in water circulation line

» Technical Parameters

» Solution

Liyuan will keep up with the world’s latest technology closely, and uphold the concept of providing customers with high-quality power supplies and professional integrated services.
With advanced design and rich experience in rectifier manufacturing, we will provide the best power solutions as well as the most stable and efficient power supply for users both at home and abroad.

» Technical Capability

LIYUAN rectifier is the most competitive brand in China

Company relies on strong technology research and development cooperation basis, created a number of advanced technology, in recent 3 years amounted to more than 30 to apply for a patent, which has nearly 10 patents of invention.

Equipped with the national electric power transformation and control engineering technology research center (branch), and has set up a loan enterprise academician workstation.

Strict implementation of ISO quality management system, and through the CE safety certification, has been implementing ERP management for many years, to achieve the network, systematic computer control, the formation of a standard, efficient modern management system.

» Qualification certification

Liyuan adhere to innovation and the continuous improvement of power conversion efficiency and product quality.

The increasing R&D investment every year, and cooperation with China’s well-known universities, we has established the research center of national electric power conversion and control engineering technology.

Especially the related core patents of high-power synchronous rectifier power supply, stay ahead of the whole industry in China.

The ISO 9001 quality management system has been fully implemented in Liyuan, including quality inspection of components in warehouse, production process inspection, and final product inspection.

We adopt advanced scientific quality management system and the most stringent testing methods in the whole process to ensure the stability and reliability of products.

» Service

› Packing

1.Small size rectifier packing in carton box separately.

2.Large size rectifier will be packed in wooden case.

3.We guarantee that all the packing is intact when it reaches its destination.

› Shipping

1.30-45 Days after payment.

2.Transport: DHL, FEDEX, UPS, Air shipping, Boat shipping

3.You may choose our shipping partner or your own partner.

› Maintenance

We are pleasant to share our theory and experience on equipment maintenance with users.

We are pleasant to interact with users to collect their tips and know-hows on equipment maintenance.

The module “Maintenance” here is intended to help users solve various problems they possibly encounter during equipment maintenance…

If you need other power anodizing rectifier, we can custom design them according to customer requirements. Please contact us.

Seeking 700A 80V aluminum anodizing rectifier? Liyuan Haina Rectifier, a professional manufacturer with 27+ years specializing in industrial rectifiers, supplies global clients including the United States, Canada, Britain, Italy, Spain, South Africa, Russia, the UAE, Japan, South Korea, Malaysia, etc. Our advanced factory delivers cost-effective Made-in-China solutions, with competitive prices and customizable options. Contact us for sales inquiries.

The post 700A 80V Aluminum Anodizing Rectifier appeared first on Electroplating Surface Treatment.

In a ​100A 350V electroplating rectifier power supply for surface treatment, after the AC input voltage is filtered by a rectifier circuit, high-voltage DC power is obtained. The “variable frequency conversion” stage inverts this high-voltage direct current into approximately 30kHz high-frequency alternating current. This high-frequency AC is then transformed into secondary voltage via a high-frequency transformer and filtered through a high-frequency rectifier circuit to produce the required output voltage. The ​ electroplating rectifier power supply for surface treatment employs a control circuit to sample output voltage and current. These sampled signals undergo closed-loop feedback to generate pulse width modulation (PWM) signals, which regulate the inverter circuit and maintain stable output voltage/current – a critical requirement for precision electroplating applications.

» Product Applications

Electroplating rectifiers support surface treatments like PCB electroplating, hard chrome coating, and metal plating (Cu, Ni, Zn, Au, Ag).

1.Field application diagram：

2.Industry application examples:

 

» Technology Advantages

Electroplating Rectifier Features

› Modular parallel connection

› Optional N+1 redundant backup

› Capable of online hot maintenance

› RS485 digital control function

› Low-voltage MOS tube rectification

› High power factor, high efficiency

› Reasonable structural design

› Effective sealed isolation

› No water joint design inside the unit

› Practical and effective multiple protection system

› Full soft switch technology

› High reliability

› Low noise, high protection level

» Role of electroplating

Protection Against Corrosion

– Shields metal surfaces from rust and chemical damage (e.g., zinc plating on steel).

Increased Wear Resistance

– Hard coatings (e.g., chromium plating) reduce friction and extend part life.

Improved Appearance

– Adds shiny, decorative finishes (e.g., gold plating on jewelry, chrome on car parts).

Better Electrical Conductivity

– Used in electronics (e.g., copper plating on circuit boards).

Enhanced Solderability

– Improves bonding in electronic components (e.g., tin plating).

Repair of Worn Parts

– Restores dimensions and functionality (e.g., rebuilding engine components).

Special Industrial Uses

– Provides heat resistance (e.g., nickel plating in aerospace).

– Used in medical devices (e.g., biocompatible coatings).

» Types of electroplating

› Copper Plating

Purpose: Enhances adhesion for subsequent layers and corrosion resistance.

Note: Prone to oxidation (forms non-conductive copper oxide/green patina). Requires protective coatings.

​› Nickel Plating

Purpose: Used as a base layer or decorative finish; improves corrosion/wear resistance. Electroless nickel offers chrome-like durability.

Note: Magnetic properties limit use in electronics (e.g., DIN/N connectors) to avoid signal interference.

​› Gold Plating

Purpose: Optimizes conductive contact impedance and signal transmission.

Key: High stability but costly.

​› Palladium-Nickel Plating

Purpose: Superior signal transmission and wear resistance vs. gold.

Advantage: Combines palladium’s corrosion resistance with nickel’s hardness.

​› Tin-Lead Plating

Purpose: Improves solderability.

Trend: Phased out due to lead concerns; replaced by bright/matte tin alternatives.

​› Silver Plating

Purpose: Best conductivity and signal performance.

Note: Conducts even when oxidized but tarnishes over time. Higher cost.

​Selection Criteria

Match plating type to application needs: corrosion/wear resistance, conductivity, cost, and environmental regulations.

» Elements of Electroplating

› Cathode
The object to be plated (e.g., connector terminals or metal surfaces) where metal ions deposit into a solid coating.

› Anode

• ​Soluble Anode: Made of the plating metal. Dissolves during electrolysis to replenish metal ions in the solution.
• ​Insoluble Anode: Used for precious metals (e.g., white gold, iridium oxide). Does not dissolve but supplies electrons for reduction.

› Plating Solution
Contains ions of the target metal. Composition and concentration determine coating thickness, adhesion, and appearance.

› Plating Tank

• Materials: Must resist corrosion and temperature fluctuations (e.g., polypropylene, titanium alloys).
• Role: Stores solution and maintains stable plating conditions.

› Rectifier

• Converts AC to DC power to drive electrolysis.
• Adjust voltage/current to control deposition speed and coating thickness.

› Auxiliary Equipment

• ​Filters: Remove impurities from the solution.
• ​Heaters: Maintain solution temperature.
• ​Stirrers: Ensure uniform mixing.

» Component Part for Electroplating

» Cooling Type for Electroplating

Air Cooling:Heat dissipation fan + air duct + comb heat sink

Water Cooling：Built-in water circulation line

» Technical Parameters

» Solution

Liyuan will keep up with the world’s latest technology closely, and uphold the concept of providing customers with high-quality power supplies and professional integrated services.

With advanced design and rich experience in rectifier manufacturing, we will provide the best power solutions as well as the most stable and efficient power supply for users both at home and abroad.

» Technical Capability

LIYUAN rectifier is the most competitive brand in China

Company relies on strong technology research and development cooperation basis, created a number of advanced technology, in recent 3 years amounted to more than 30 to apply for a patent, which has nearly 10 patents of invention.

Equipped with the national electric power transformation and control engineering technology research center (branch), and has set up a loan enterprise academician workstation.

Strict implementation of ISO quality management system, and through the CE safety certification, has been implementing ERP management for many years, to achieve the network, systematic computer control, the formation of a standard, efficient modern management system.

» Qualification certification

Liyuan adhere to innovation and the continuous improvement of power conversion efficiency and product quality.

The increasing R&D investment every year, and cooperation with China’s well-known universities, we has established the research center of national electric power conversion and control engineering technology.

Especially the related core patents of high-power synchronous rectifier power supply, stay ahead of the whole industry in China.

The ISO 9001 quality management system has been fully implemented in Liyuan, including quality inspection of components in warehouse, production process inspection, and final product inspection.

We adopt advanced scientific quality management system and the most stringent testing methods in the whole process to ensure the stability and reliability of products.

» Service

› Packing

1.Small size rectifier packing in carton box separately.

2.Large size rectifier will be packed in wooden case.

3.We guarantee that all the packing is intact when it reaches its destination.

› Shipping

1.30-45 Days after payment.

2.Transport: DHL, FEDEX, UPS, Air shipping, Boat shipping

3.You may choose our shipping partner or your own partner.

› Maintenance

We are pleasant to share our theory and experience on equipment maintenance with users.

We are pleasant to interact with users to collect their tips and know-hows on equipment maintenance.

The module “Maintenance” here is intended to help users solve various problems they possibly encounter during equipment maintenance…

If you need other power electroplating rectifiers, we can custom design them according to customer requirements. Please contact us.

Seeking a 100A 350V electroplating rectifier power supply for surface treatment? Liyuan Haina Group is one of the professional manufacturers and suppliers in this field. With over 27 years of focus on R&D, design, production, sales, and technical services for industrial rectifiers, we have already exported our products to the United States, Canada, Britain, Italy, Spain, South Africa, Russia, the UAE, Japan, South Korea, Malaysia, and other parts of the world. Equipped with a productivefactory, we warmly welcome you to purchase our high-quality, Made-in-China products at competitive prices or try our customized service.

The post 100A 350V Electroplating Rectifier Power Supply for Surface Treatment appeared first on Electroplating Surface Treatment.

The Anodizing Rectifier delivers precise high-voltage control (up to 120V+) for hard anodizing. It supports currents from hundreds to tens of thousands of amps. Unlike decorative processes at 20V–24V, its high-frequency switching slashes oxide layer formation time by 30% and energy use. Compact design ensures stable current, enabling uniform Al₂O₃ films for corrosion-resistant, ultra-hard surfaces. Post-treatments like hot-water sealing integrate smoothly, boosting durability and color uniformity in dyed parts. With ±1% voltage stability, it produces repeatable aerospace and architectural components while reducing physical footprint and downtime.

» Product Applications

Anodizing Rectifier drives the electrochemical formation of aluminum’s oxide layer (Al₂O₃), critical for industrial applications demanding corrosion resistance and structural integrity. By delivering stable current outputs, it enables uniform growth of protective coatings with adjustable thickness (5–25μm), essential for automotive trim exposed to road salts or marine-grade architectural window frames. The technology ensures surfaces achieve 500–900 HV hardness for scratch-resistant smartphone casings while maintaining dielectric properties for heat sink insulation in 5G equipment. Post-anodizing, the rectifier-compatible sealing process locks in organic dyes for fade-resistant facade panels and medical device markings. Its adaptive voltage control (12–120V DC) supports both Type II decorative finishes on consumer electronics and Type III hard coatings for aircraft landing gear components, achieving 60% faster cycle times versus traditional rectifiers through pulsed current optimization.

1.Field application diagram：

2.Industry application examples:

» Technology Advantages

› A very thin coating

› Excellent corrosion protection

› Good electrical insulator

› Fade resistant in sunlight

› Environmentally friendly finish

› Inexpensive

› Extremely durable, hard, abrasion resistant and long lasting

» Role of Anodizing

Corrosion Resistance

Forms a protective oxide barrier against saltwater, chemicals, and atmospheric exposure, critical for marine hardware, aircraft components, and automotive underbody parts.

Surface Hardening

Achieves 300–500 HV surface hardness (vs. ~100 HV for bare aluminum), ideal for hydraulic systems, machinery guides, and industrial tooling requiring wear resistance.

Aesthetic Customization

Enables dyeing (organic/inorganic pigments) and electrolytic coloring for architectural façades, consumer electronics casings, and luxury packaging.

Electrical Insulation

Provides dielectric strength (15–25 V/μm) for heat sinks, PCB enclosures, and power distribution components needing non-conductive surfaces.

Adhesion Promotion

Microporous structure enhances bonding for powder-coated window frames, adhesive-mounted automotive trims, and composite aerospace panels.

Abrasion Resistance

Extends service life of conveyor components, firearm parts, and offshore rig equipment exposed to sand, grit, or high friction.

Thermal Management

Improves heat dissipation in LED housings, server racks, and EV battery trays via oxide layer’s emissivity (ε ≈ 0.7–0.8).

» Types of Anodizing

Anodizing rectifiers supply regulated current and voltage to electrochemically generate aluminum oxide layers, with core models such as the Aluminum Anodizing Rectifier (hard coating) and DC/AC Coloring Rectifier (integrated dyeing), each engineered for distinct process parameters.

› Aluminum Anodizing Rectifier

Function: Delivers direct current (DC) to form a protective oxide layer on aluminum.

Features:

Precise Voltage Control: Ensures optimal oxide film formation.

Stable Current: Prevents defects like uneven layers.

Energy Efficient: High-frequency switching technology reduces energy use.

Applications: Used in aerospace, automotive, and construction for corrosion-resistant aluminum products.

› DC/AC Coloring Rectifier

Function: Allows for both DC and AC currents to enable precise color effects in anodizing while maintaining the oxide layer’s integrity.

Features:

Dual Current Output: Enables fine control over color development.

Energy Efficiency: High-frequency switching reduces energy consumption.

These rectifiers ensure efficient, high-quality anodizing results tailored to industry needs.

» Cooling Type for Anodizing

Air Cooling:Heat dissipation fan + air duct + comb heat sink

Water Cooling：Built-in water circulation line

» Technical Parameters

» Solution

Liyuan will keep up with the world’s latest technology closely, and uphold the concept of providing customers with high-quality power supplies and professional integrated services.

With advanced design and rich experience in rectifier manufacturing, we will provide the best power solutions as well as the most stable and efficient power supply for users both at home and abroad.

» Technical Capability

LIYUAN rectifier is the most competitive brand in China

Company relies on strong technology research and development cooperation basis, created a number of advanced technology, in recent 3 years amounted to more than 30 to apply for a patent, which has nearly 10 patents of invention.

Equipped with the national electric power transformation and control engineering technology research center (branch), and has set up a loan enterprise academician workstation.

Strict implementation of ISO quality management system, and through the CE safety certification, has been implementing ERP management for many years, to achieve the network, systematic computer control, the formation of a standard, efficient modern management system.

» Qualification certification

Liyuan adhere to innovation and the continuous improvement of power conversion efficiency and product quality.

The increasing R&D investment every year, and cooperation with China’s well-known universities, we has established the research center of national electric power conversion and control engineering technology.

Especially the related core patents of high-power synchronous rectifier power supply, stay ahead of the whole industry in China.

The ISO 9001 quality management system has been fully implemented in Liyuan, including quality inspection of components in warehouse, production process inspection, and final product inspection.

We adopt advanced scientific quality management system and the most stringent testing methods in the whole process to ensure the stability and reliability of products.

» Service

› Packing

1.Small size rectifier packing in carton box separately.

2.Large size rectifier will be packed in wooden case.

3.We guarantee that all the packing is intact when it reaches its destination.

› Shipping

1.30-45 Days after payment.

2.Transport: DHL, FEDEX, UPS, Air shipping, Boat shipping

3.You may choose our shipping partner or your own partner.

› Maintenance

We are pleasant to share our theory and experience on equipment maintenance with users.

We are pleasant to interact with users to collect their tips and know-hows on equipment maintenance.

The module “Maintenance” here is intended to help users solve various problems they possibly encounter during equipment maintenance…

If you need other power anodizing rectifier, we can custom design them according to customer requirements. Please contact us.

Seeking 15KA 22V aluminum anodizing rectifier? Liyuan Haina Rectifier, a professional manufacturer with 27+ years specializing in industrial rectifiers, supplies global clients including the United States, Canada, Britain, Italy, Spain, South Africa, Russia, the UAE, Japan, South Korea, Malaysia, etc. Our advanced factory delivers cost-effective Made-in-China solutions, with competitive prices and customizable options. Contact us for sales inquiries.

The post 15KA 22V Aluminum Anodizing Rectifier appeared first on Electroplating Surface Treatment.

Used extensively in manufacturing, electroplating applies micron-scale metallic coatings through controlled electrolytic reactions, improving both functional properties (e.g., abrasion resistance in engine components) and decorative finishes (e.g., jewelry gold plating).Widely used processes include copper, nickel, and hard chrome plating, with advanced systems like ​Polarity Reversing Electroplating Rectifiers enabling precise control for complex geometries. These rectifiers dynamically adjust current polarity, improving adhesion on ABS plastics and intricate automotive components.

The electroplating setup requires a cathode (substrate), anode (metallic or inert), electrolyte solution, and DC power supply. Modern ​Polarity Reversing Electroplating Rectifiers outperform traditional units by integrating bidirectional current control, achieving ±0.5% voltage stability for uniform chromium deposition. Their adaptive waveforms reduce hydrogen embrittlement in hard chrome plating while maintaining 98% energy efficiency, making them indispensable for high-volume PCB manufacturing and decorative gold/silver coatings.

In automotive applications, ​Electroplating Rectifiers optimize corrosion-resistant zinc-nickel alloy layers on engine parts, extending service life by 40%. The technology also supports aerospace fastener coatings, where periodic polarity reversal ensures micron-level thickness consistency. By minimizing material waste and process time, these systems exemplify innovation in sustainable surface treatment solutions.

» Product Applications

Plating rectifiers support surface treatments like PCB electroplating, hard chrome coating, and metal plating (Cu, Ni, Zn, Au, Ag).

1.Field application diagram：

2.Industry application examples:

» Technology Advantages

Electroplating Rectifier Features

› Energy Efficiency
Converts AC to DC with minimal energy loss, cutting costs for large-scale operations.

› Stable Output
Maintains stable voltage/current under load changes, ensuring even coating thickness.

› Customizable Waveforms
Adjusts pulse width, frequency, and duty cycle to match specific plating needs (e.g., pulse plating for microelectronics).

› Easy Controls
User-friendly controls (manual or automated) enable quick parameter adjustments for precision.

These features ensure reliable, high-quality plating with minimal waste.

» Role of electroplating

Protection Against Corrosion

– Shields metal surfaces from rust and chemical damage (e.g., zinc plating on steel).

Increased Wear Resistance

– Hard coatings (e.g., chromium plating) reduce friction and extend part life.

Improved Appearance

– Adds shiny, decorative finishes (e.g., gold plating on jewelry, chrome on car parts).

Better Electrical Conductivity

– Used in electronics (e.g., copper plating on circuit boards).

Enhanced Solderability

– Improves bonding in electronic components (e.g., tin plating).

Repair of Worn Parts

– Restores dimensions and functionality (e.g., rebuilding engine components).

Special Industrial Uses

– Provides heat resistance (e.g., nickel plating in aerospace).

– Used in medical devices (e.g., biocompatible coatings).

» Types of electroplating

› Copper Plating

Purpose: Enhances adhesion for subsequent layers and corrosion resistance.

Note: Prone to oxidation (forms non-conductive copper oxide/green patina). Requires protective coatings.

› Nickel Plating

Purpose: Used as a base layer or decorative finish; improves corrosion/wear resistance. Electroless nickel offers chrome-like durability.

Note: Magnetic properties limit use in electronics (e.g., DIN/N connectors) to avoid signal interference.

› Gold Plating

Purpose: Optimizes conductive contact impedance and signal transmission.

Key: High stability but costly.

› Palladium-Nickel Plating

Purpose: Superior signal transmission and wear resistance vs. gold.

Advantage: Combines palladium’s corrosion resistance with nickel’s hardness.

› Tin-Lead Plating

Purpose: Improves solderability.

Trend: Phased out due to lead concerns; replaced by bright/matte tin alternatives.

› Silver Plating

Purpose: Best conductivity and signal performance.

Note: Conducts even when oxidized but tarnishes over time. Higher cost.

Selection Criteria

Match plating type to application needs: corrosion/wear resistance, conductivity, cost, and environmental regulations.

» Elements of Electroplating

› Cathode
The object to be plated (e.g., connector terminals or metal surfaces) where metal ions deposit into a solid coating.

› Anode

• ​Soluble Anode: Made of the plating metal. Dissolves during electrolysis to replenish metal ions in the solution.
• ​Insoluble Anode: Used for precious metals (e.g., white gold, iridium oxide). Does not dissolve but supplies electrons for reduction.

› Plating Solution
Contains ions of the target metal. Composition and concentration determine coating thickness, adhesion, and appearance.

› Plating Tank

• Materials: Must resist corrosion and temperature fluctuations (e.g., polypropylene, titanium alloys).
• Role: Stores solution and maintains stable plating conditions.

› Rectifier

• Converts AC to DC power to drive electrolysis.
• Adjust voltage/current to control deposition speed and coating thickness.

› Auxiliary Equipment

• ​Filters: Remove impurities from the solution.
• ​Heaters: Maintain solution temperature.
• ​Stirrers: Ensure uniform mixing.

» Component Part for Electroplating

» Cooling Type for Electroplating

Air Cooling:Heat dissipation fan + air duct + comb heat sink

Water Cooling：Built-in water circulation line

» Technical Parameters

» Solution

Liyuan will keep up with the world’s latest technology closely, and uphold the concept of providing customers with high-quality power supplies and professional integrated services.

With advanced design and rich experience in rectifier manufacturing, we will provide the best power solutions as well as the most stable and efficient power supply for users both at home and abroad.

» Technical Capability

LIYUAN rectifier is the most competitive brand in China

Company relies on strong technology research and development cooperation basis, created a number of advanced technology, in recent 3 years amounted to more than 30 to apply for a patent, which has nearly 10 patents of invention.

Equipped with the national electric power transformation and control engineering technology research center (branch), and has set up a loan enterprise academician workstation.

Strict implementation of ISO quality management system, and through the CE safety certification, has been implementing ERP management for many years, to achieve the network, systematic computer control, the formation of a standard, efficient modern management system.

» Qualification certification

Liyuan adhere to innovation and the continuous improvement of power conversion efficiency and product quality.

The increasing R&D investment every year, and cooperation with China’s well-known universities, we has established the research center of national electric power conversion and control engineering technology.

Especially the related core patents of high-power synchronous rectifier power supply, stay ahead of the whole industry in China.

The ISO 9001 quality management system has been fully implemented in Liyuan, including quality inspection of components in warehouse, production process inspection, and final product inspection.

We adopt advanced scientific quality management system and the most stringent testing methods in the whole process to ensure the stability and reliability of products.

» Service

› Packing

1.Small size rectifier packing in carton box separately.

2.Large size rectifier will be packed in wooden case.

3.We guarantee that all the packing is intact when it reaches its destination.

› Shipping

1.30-45 Days after payment.

2.Transport: DHL, FEDEX, UPS, Air shipping, Boat shipping

3.You may choose our shipping partner or your own partner.

› Maintenance

We are pleasant to share our theory and experience on equipment maintenance with users.

We are pleasant to interact with users to collect their tips and know-hows on equipment maintenance.

The module “Maintenance” here is intended to help users solve various problems they possibly encounter during equipment maintenance…

If you need other power electroplating rectifiers, we can custom design them according to customer requirements. Please contact us.

Are you looking for 6V 150A zinc electroplating rectifier power supply? Liyuan Haina Group is one of the professional manufacturers and suppliers in this field. With over 27 years of focus on R&D, design, production, sales, and technical services for industrial rectifiers, we have already exported our products to the United States, Canada, Britain, Italy, Spain, South Africa, Russia, the UAE, Japan, South Korea, Malaysia, and other parts of the world. Equipped with a productivefactory, we warmly welcome you to purchase our high-quality, Made-in-China products at competitive prices or try our customized service.

The post 6V 150A Zinc Electroplating Rectifier Power Supply appeared first on Electroplating Surface Treatment.