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Plating×サン工業 - List of Manufacturers, Suppliers, Companies and Products

Plating Product List

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[Problem-Solving Case] Improvement of Plating Uniformity

[Problem-Solving Case] Improvement of Plating Uniformity

Introducing a case where electroless tin plating was proposed for small components to address issues of no plating and uneven plating!

We were processing micro brass parts, measuring a few millimeters in size, using a barrel for electroplating with tin. However, we faced issues with parts sticking together, leading to areas without plating and uneven plating. The purpose of tin plating is to reduce surface contact resistance, and since a thin film thickness is acceptable, we proposed electroless tin plating. As a result, previously, due to barrel plating, there was variation in plating thickness and defects such as areas without plating and uneven plating occurred. However, after switching to electroless tin plating, these issues have been completely eliminated. 【Issues】 ■ Areas without plating and uneven plating on micro parts ■ Stains and discoloration ■ Variation in plating thickness ● For more details, please visit our company website and contact us.

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[Case Study on Problem Solving] Improvement of Yield for Black Nickel Plating Appearance

[Case Study on Problem Solving] Improvement of Yield for Black Nickel Plating Appearance

Analysis management using a capillary electrophoresis analyzer! Each component was individually supplied and managed.

There were issues with the black nickel plating process, such as peeling of the coating and differences in color between batches, resulting in poor yield. Black nickel plating is an alloy plating of nickel and zinc, and its blackness and adhesion of the coating are influenced by the concentration of the components. At Sun Industry, we analyze and manage not only the concentrations of nickel and zinc but also organic additives using a specialized analysis device called a capillary electrophoresis analyzer. By individually managing the replenishment of each component, we maintain a consistent liquid concentration, ensuring that the black color and adhesion quality are preserved. [Issues] ■ Differences in color between batches ■ Peeling of the plating ● For more details, please visit our company website and contact us.

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[Case Study] Reducing Component Costs Using Plating

[Case Study] Reducing Component Costs Using Plating

Prevent rust on uncoated areas of hard chrome! Contributes to cost reduction throughout the entire product manufacturing process.

In conventional products, hard chrome plating is applied to stainless steel for corrosion resistance. However, there was a challenge in trying to change the material to iron to reduce material costs, as the product has many bent and welded parts, resulting in areas without hard chrome plating. To address this, Sun Industry performed electroless nickel plating as a base layer and then applied hard chrome plating on top of it. As a result, while changing the material from expensive stainless steel to iron (SPCC), we were able to provide wear resistance and corrosion resistance equivalent to conventional products, contributing to cost reduction throughout the entire product manufacturing process. [Issues] - Hard chrome plating on complex-shaped iron parts - Rust prevention for areas without hard chrome plating For more details, please visit our company website and contact us.

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[Case Study] Reduction of Total Costs by Omitting Customer Process

[Case Study] Reduction of Total Costs by Omitting Customer Process

Reduce total costs! We proposed a treatment that applies electroless nickel plating to the substrate.

There was a need for plating on the surface of the sliding products, and since hard chrome plating is known for its durability and wear resistance, it was applied. However, due to the material being aluminum, there were no manufacturers capable of direct plating, which posed a problem. In response, Sun Industry proposed a treatment that involved applying an electroless nickel plating as a base layer instead of direct chrome plating. As a result, a plating method with good adhesion was established, allowing us to eliminate the finishing buffing process without worsening the surface roughness from the previous buffing state, thereby reducing the total cost. [Challenges] ■ Other plating manufacturers could not achieve good adhesion of hard chrome on aluminum. ■ Surface polishing had to be done in advance to meet the drawing specifications for plating. ■ The sliding parts have grooves, making it difficult to apply plating on the material. ● For more details, please visit our company website and contact us.

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Electroless black nickel plating【Plating and Surface Treatment Technology】

Electroless black nickel plating【Plating and Surface Treatment Technology】

Beautiful black coating! The reduction of light reflection results in a deeper black color.

"Black Electroless Nickel Plating" is a treatment that blackens the surface of electroless nickel plating, giving it a deep black color. After processing with a special electroless nickel plating, the surface is blackened through a blackening treatment. Since it operates on the same principle as electroless nickel plating, a uniform film thickness with good dimensional accuracy can be achieved. 【Features】 ■ A decorative black coating can be obtained. ■ The surface has fine irregularities, causing visible light to be absorbed in the recessed areas, resulting in less light reflection and a deeper black color. ■ Operates on the same principle as electroless nickel plating. ■ A uniform film thickness with good dimensional accuracy can be achieved. ● For more details, please visit our company website and contact us.

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Surface treatment technology: PTFE composite electroless nickel plating (low content)

Surface treatment technology: PTFE composite electroless nickel plating (low content)

PFOA regulations have been addressed! It is possible to improve release properties while maintaining dimensional accuracy such as shape.

"PTFE Composite Electroless Nickel Plating (Low Content)" is a plating that disperses Teflon particles (Polytetrafluoroethylene: PTFE) into an electroless nickel plating film. In addition to the characteristics of electroless nickel plating, it excels in the properties of PTFE, such as slip resistance, sliding properties, water repellency, and release properties. It is particularly effective for parts that require wear resistance and sliding properties, such as pistons and plungers. 【Features】 ■ Complies with PFOA regulations ■ Excellent slip resistance, sliding properties, water repellency, and release properties ■ Effective for parts requiring wear resistance and sliding properties ■ Functional coating that combines the characteristics of PTFE ■ High dimensional accuracy ● For more details, please visit our website and contact us.

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Surface treatment technology: Electroless nickel plating (ELp-Fe/Ni)

Surface treatment technology: Electroless nickel plating (ELp-Fe/Ni)

Ideal for surface treatment of precision parts! Heat treatment can improve coating hardness.

"Electroless nickel plating (ELp-Fe/Ni)" utilizes chemical reactions on the product surface for plating. As a result, there is less variation in coating thickness, and it allows for thickness management on the micrometer scale, making it suitable for surface treatment of precision parts. The coating has high hardness, and it is possible to increase the hardness to around Hv1000 through heat treatment. It also has good adhesion to aluminum materials and can be used as a base for various platings. 【Features】 ■ High dimensional accuracy ■ Increased hardness through heat treatment ■ Non-magnetic coating ■ Thickness management on the micrometer scale is possible ■ Good adhesion to aluminum materials ● For more details, please visit our website and contact us.

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Plating and Surface Treatment Technology: Gold Plating (Au)

Plating and Surface Treatment Technology: Gold Plating (Au)

A very stable metal that does not change its properties! Maintains good solderability over a long period.

Gold plating (Au) is a metal that not only has a sparkling decorative quality but also possesses corrosion resistance, oxidation resistance, excellent electrical and thermal conductivity, low contact resistance, and good solderability (wetting) and bonding properties. As a result, it is used in a wide range of fields, and due to its limited availability as a resource and existing demand, its price is higher compared to other types of plating. While decorations for temples and shrines, gold medals, and accessories come to mind first, it is also used in various electronic products. [Features] - Excellent corrosion resistance - Stable properties - Good solderability - High electrical conductivity - Used in a wide range of fields For more details, please visit our company website and contact us.

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Plating and Surface Treatment Technology: Black Nickel Plating

Plating and Surface Treatment Technology: Black Nickel Plating

It is effective in maintaining blackness in high-temperature environments! It can produce a gunmetal color.

"Black nickel plating" is a decorative plating that produces a black film with a metallic luster. While decorative chrome plating results in a white metallic color, this plating is used for its black metallic color. The black color is achieved through an alloy of nickel and zinc, making it relatively inexpensive, and it has the characteristic of being harder than zinc black chromate. 【Features】 ■ The black color is obtained from an alloy of nickel and zinc, making it relatively inexpensive. ■ The film is harder than zinc black chromate. ■ It can produce a metallic black color, commonly referred to as gunmetal color. ■ It is effective in maintaining the black appearance in high-temperature environments. ● For more details, please visit our company website and contact us.

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I want to achieve a uniform appearance when directly applying black chrome to aluminum die casting.

I want to achieve a uniform appearance when directly applying black chrome to aluminum die casting.

Conditions for current density that result in a matte finish! A successful case of stable blackening of aluminum die-cast materials.

We would like to apply a blackening treatment to aluminum die-cast materials, but with other companies' plating, the black color did not develop well and resulted in a light gray appearance. As a workaround, we have been using oil to eliminate surface irregularities, which has been a concern. Therefore, we proposed to adjust the component ratio of black chrome plating to achieve a matte black appearance while maintaining the plating state. To also address cost reduction, we considered eliminating the nickel plating that was previously applied as a base layer and directly applying black chrome plating to the material, successfully achieving stable blackening of aluminum die-cast materials. 【Issues】 ■ The appearance of current products from other companies is uneven. ■ An additional step of applying oil becomes necessary. ■ Oil is not required for product assembly and becomes a cost-increasing factor. ● For more details, please visit our company website and contact us.

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Appearance defects occurred in PFOA countermeasure Teflon lubricated electroless nickel plating.

Appearance defects occurred in PFOA countermeasure Teflon lubricated electroless nickel plating.

At San Kogyo, we have already evaluated many PFOA countermeasure products! We are progressing to enable mass production.

We tried a PFOA-compliant product for Teflon-lubricated electroless nickel plating, but there were issues such as a lack of visual gloss and uneven surfaces. At Sun Industry, we have already evaluated many PFOA-compliant products and are progressing towards mass production. Since Teflon-lubricated electroless nickel plating with PFOA measures often differs in appearance and management points from conventional products, we conducted tests on many chemicals and were able to pre-evaluate the dispersion state and appearance of Teflon particles in the development department to select the most suitable ones. [Issues] - Under the microscope, Teflon microparticles are clustered in some areas and incorporated into the plating film, resulting in uneven dispersion. - Due to the uneven dispersion, there are differences in hardness in certain areas. For more details, please visit our company website and contact us.

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I want to eliminate stains caused by seepage from the tapped holes and seams of the zinc plating.

I want to eliminate stains caused by seepage from the tapped holes and seams of the zinc plating.

We will introduce a case that was solved using know-how for cleaning the bonding surfaces and preventing seepage from tapped holes.

We would like to introduce a case of a customer who is struggling with seepage from spot welds, bonded surfaces, and screw holes. San Kogyo's zinc plating line consists of two types: an automatic plating line suitable for mass production and a manual line where skilled workers perform plating by hand for each individual item. In the manual line, we have the know-how to clean bonded surfaces and prevent seepage from tapped holes, which allowed us to eliminate the seepage stains that the customer was facing. 【Issues】 ■ The processed iron products are experiencing appearance defects due to seepage from screw holes, causing problems. ■ Although we have requested that screws be inserted in advance to make it difficult for liquid to enter the screw holes, seepage still occurs, resulting in contamination. ■ Liquid also seeps out from the bonded surfaces after plating, leading to stains. ● For more details, please visit our company website and contact us.

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Plating and Surface Treatment Technology: Silver Plating (Ag)

Plating and Surface Treatment Technology: Silver Plating (Ag)

As a charging terminal for electric vehicles (EVs)! It excels in electrical conductivity, antibacterial properties, and bonding capabilities.

Silver plating (Ag) has a beautiful white color tone and is widely used in electronic components, decorative items, tableware, etc., due to its excellent electrical conductivity, antibacterial properties, and bonding capabilities. Silver is also excellent in lubricity and sealing properties, making it suitable for various industrial parts. Particularly, hard silver plating has recently gained attention as a charging terminal for electric vehicles (EV) due to its hardness and low electrical resistance. [Features] - Low electrical resistance - Hardness can be improved by adding additives - Soft coating - Suitable for cable terminals of electric vehicles (EV) that require high current - Both hard silver plating and soft matte silver plating are available - Electroless silver plating for pipe shapes and ceramic packages is also available For more details, please visit our website and contact us.

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Plating and Surface Treatment Technology: Tin Plating (Sn)

Plating and Surface Treatment Technology: Tin Plating (Sn)

Effective in improving the sliding properties of the sliding parts! It is also widely used as an alternative to soldering.

"Tin plating (Sn)" is widely used in electrical and electronic components due to its excellent luster and good solderability. Additionally, because of its good sliding properties, it is also used for surface treatment of engine pistons and other applications. At Sun Industry, we perform not only acidic glossy plating and alkaline matte plating but also electroless tin plating on copper materials. Please feel free to consult us when you need our services. 【Features】 ■ Highly flexible ■ Low friction plating ■ Widely used as an alternative to solder ■ In addition to acidic glossy plating and alkaline matte plating, we also perform electroless tin plating on copper materials. ● For more details, please visit our website and contact us.

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Electrolytic nickel plating (gloss)

Electrolytic nickel plating (gloss)

It also works well as an undercoating! A beautiful glossy plating film can be obtained.

"Electrolytic Nickel Plating (Glossy)" is a plating that incorporates organic additives into the electrolytic nickel bath to achieve a glossy finish. Thanks to the leveling effect of the additives, a plating film with strong gloss is obtained, making it useful as a base plating. It is a versatile type of plating used in various applications, such as enhancing the gloss in decorative chrome plating, improving corrosion resistance in gold plating, and preventing metal diffusion in tin plating. 【Features】 ■ Improved surface smoothness by adding gloss agents ■ A plating film with a beautiful glossy finish is obtained ■ Effective as a base plating ■ A versatile type of plating used in various applications ● For more details, please visit our company website and contact us.

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