As is known to all, customers who generally come to customize screws have a variety of requirements for the surface treatment of screws, some to black zinc plating, some black oxide, and some to passivation. European customers asked the stainless steel screws to do passivation, just take this opportunity, Anzhikou stainless steel screw manufacturers to tell you about what the benefits stainless steel screws after passivation:
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Because of the production process of stainless steel screws, in the head and CNC of these links, the surface of the screw may be scraped or stained with some fine debris or particles, if make the surface treatment, its surface is likely to be stained with oxidizing substances.
During passivation, the stainless steel screws will be immersed in the pin acid and water solution. When removed, the surface of the stainless steel will be reformed into an oxide film without external materials. If the screw is not cleaned and exposed to the external environment, it is very likely to rust due to embedded impurities, so in order to increase the corrosion of scandium, but also in order to screw shipment appearance is more beautiful, a lot of stainless steel screws will do passivation treatment.
Suzhou Anzhikou Hardware Technology Co., Ltd. is a manufacturer with more than 20 years of experience in screw production, whether stainless steel screws, or copper, carbon steel and other materials, we can be customized according to your requirements, to provide you with suitable fastener solutions.
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