クロイワ Company Profile

In comparison to existing black surface treatments, our proposed coating-based surface treatment can enhance appearance quality and corrosion resistance. In the standard specification, a silver-based coating is applied with a black topcoat; however, if you wish to stabilize the black color further, we can also offer options such as using a black base coat. Please feel free to consult us when looking for black surface treatments.

By changing the material of stainless steel products to iron and applying our high corrosion-resistant surface treatment, it is possible to achieve a total cost reduction. We will listen to your requirements for rust prevention performance and specification conditions, and propose the optimal surface treatment. We can accommodate small sample production, so please feel free to consult with us.

One property that is closely related to surface treatment is the coefficient of friction (slip resistance). Particularly in the case of threaded products, variations in the coefficient of friction during tightening can lead to insufficient fastening or over-torquing, which may result in various issues such as loosening of screws or sinking of the counterpart material. Our surface treatment not only improves rust resistance but also allows for stabilization within a specific range of coefficients of friction, enabling proper torque management. If you are experiencing difficulties with screw fastening, please consult us. Additionally, if you are currently applying lubricants separately, our surface treatment can control the coefficient of friction on its own, making it possible to eliminate the need for lubricants. *Please note that the torque coefficient may vary depending on the conditions of the internal threads and the components being fastened.