Is passivation treatment of stainless steel screw very important

During the production process of stainless steel screw, such as upsetting and turning, the screw surface may be stained with iron chips or some relatively written particles may be produced during the processing. If it is not removed, the appearance of the screw surface will be affected or the screw will rust. Generally, this surface treatment requires passivation to remove impurities on these surfaces< br> Passivation treatment of stainless steel screw can not only make the screw surface more smooth and bright, but also improve the anti rust ability and corrosion resistance of the screw. Due to different passivation treatments< br> The salt spray test time is different, some can exceed 24 hours, and some can exceed 1000 hours. This requires the customer to actively inform how long the salt spray test will take. Otherwise, the stainless steel screw manufacturer will basically passivate according to the standard< br> According to the standard passivation treatment, the stainless steel screw can only pass the salt spray test for 12 hours, and cannot reach a longer time. Therefore, when passivation treatment is required, the screw manufacturer must be informed of his own requirements, otherwise it will be different from his actual needs< br>