Should stainless steel screws be surface treated


Speaking of stainless steel screws, I believe we are fa […]

Speaking of stainless steel screws, I believe we are familiar with them, and the scope of application is also very common. Under normal circumstances, the surface of stainless steel screws is smooth, so there is no need to do surface treatment. However, some customers will put forward some surface treatment requirements, one is to meet their own engineering requirements, the other is to improve certain aspects of the performance of stainless steel screws, and the third is to look more beautiful in appearance. Next, stainless steel screw manufacturers will introduce to you what surface treatment methods are available for stainless steel screws!

1. Electroplating: The stainless steel screw manufacturer immerses the electroplated parts in an aqueous solution containing the deposited metal compound, and passes current through the plating solution to precipitate and deposit the electroplated metal on the parts. General electroplating includes zinc, copper, nickel, chromium, copper-nickel alloy and so on.

2. Hot-dip galvanizing is done by immersing the carbon steel parts in a plating tank with molten zinc at a temperature of about 51o℃. The result is that the iron-zinc alloy on the surface of the steel gradually becomes passivated zinc on the outer surface of the product. Hot-dip aluminum plating is a similar process.

3. Mechanical plating: impact the surface of the product through the particles of the coated metal, and cold weld the layer to the surface of the product. Generally, the screws are mostly electroplated, but the hexagonal wood screws used in electric power, highways, etc. are hot-dip galvanized. The cost of hot-dip galvanizing will be relatively higher than the cost of electroplating.