中金 List of Products and Services

"PEO" is an anodizing method that generates an insulating film under spark discharge (plasma emission), resulting in a ceramic coating that has better adhesion and superior film strength compared to anodized coatings. It is possible to process in white (PEO "white") and black (PEO "black"), and uniform film formation can be achieved even on corners. Additionally, treatments for magnesium (Mg-PEO) and titanium (Ti-PEO) are also possible. 【Features】 ■ White and black processing available ■ Uniform film formation possible even on corners ■ Ceramic coating with excellent film strength can be obtained *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

The "chemical film" is a protective coating that forms on the surface of aluminum. It achieves a beautiful hue ranging from pale yellow to yellow-brown and passes the 168-hour salt spray test, showing no signs of corrosion or pitting. The electrical resistance of the coating is extremely low, making it suitable for products that require electrical conductivity, such as electrical and electronic components. 【Features】 ■ Achieves a beautiful hue ranging from pale yellow to yellow-brown ■ High adhesion for painting, used as a base treatment for coatings ■ Passes the 168-hour salt spray test with no corrosion or pitting ■ Extremely low electrical resistance of the coating ■ Ideal for products that require electrical conductivity, such as electrical and electronic components *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

"Hard anodizing" is a hard coating obtained by anodizing at a high current density in a sulfuric acid solution. It has high corrosion resistance, passing a salt spray test for 336 hours at a standard thickness of 50μm, and since the coating thickness can be adjusted, it can accommodate various applications and product dimensional tolerances. A coating of similar quality can be produced on materials that are generally considered difficult to hard anodize, such as 2000 series aluminum alloys and castings. 【Features】 ■ High corrosion resistance, passing a salt spray test for 336 hours at a standard thickness of 50μm ■ Adjustable coating thickness (standard 50μm, 20–70μm) ■ Capable of accommodating various applications and product dimensional tolerances ■ High wear resistance even in harsh operating environments (Diano) ■ No coating delamination observed even in a 90-degree bending test *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

"Sulfuric anodizing" is a coating obtained by anodizing in a sulfuric acid aqueous solution. It has high corrosion resistance, passing the standard 10μm salt spray test for 336 hours, and the resulting coating has good transparency, allowing the aluminum metal surface to be utilized as is. In process management tests, a coating mass that meets the MIL-A-8625 standard value of over 1000mg/ft² has been achieved, maintaining good coating density across various materials. 【Features】 ■ High corrosion resistance ■ Coating thickness can be adjusted from 2 to 25μm ■ Allows the aluminum metal surface to be utilized as is ■ Appearance can be altered through dyeing ■ Available in black, blue, red, orange, and other colors *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

『MIL-A-8625 TYPE I』 is a coating obtained by anodizing in an aqueous solution of anhydrous chromic acid. It possesses high corrosion resistance, having passed a 336-hour salt spray exposure test. It is also resistant to temperature changes, with no cracking occurring in high or low-temperature environments. Additionally, it complies with aviation-related standards and can accommodate various dyeing options, so please feel free to contact us. 【Features】 ■ Corrosion resistance ■ Heat resistance ■ Flexibility ■ Produces a uniform thickness coating ■ Good coating density *For more details, please download the PDF or feel free to contact us.

• aluminum