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What are the methods of surface treatment of non-standard bolts?

2022-02-26 Hits: 45 views


In the production process of non-standard bolts, it is very important to do a good job of surface treatment. Now let’s learn about each other.

  1. Mechanical plating: By coating the metal particles and cold welding the coating to the surface of the product, thus affecting the surface of the product.

  2. Plating: Immerse the plated parts in an aqueous solution containing deposited metal compounds and deposit the plated metal on the components by passing an electric current through the plating bath. General electroplating is galvanized, copper, nickel, chromium, copper-nickel alloy, etc., sometimes black (blue), phosphating, etc.

  3. Hot-dip galvanizing: This is done by immersing carbon steel parts in a molten pool at a temperature of about 510°C. As a result, the zinc-iron alloy on the surface of the steel part gradually becomes passivated zinc on the outer surface of the product. Hot-dip aluminum plating is a similar process.

  Therefore, non-standard bolts need to choose the appropriate surface treatment method according to the actual situation to ensure its good performance.