What are the ways of surface treatment of non-standard screws


With the continuous development of technology, ordinary […]

With the continuous development of technology, ordinary screws can no longer meet the requirements of many industries. What followed was a series of customized non-standard screws. Then someone will ask, what are the ways to do surface treatment like non-standard screws?

1. Non-standard screw plating

Non-standard screw electroplating usually includes zinc, copper, and nickel plating. Chromium, copper-nickel alloy, etc. It refers to immersing fasteners that need to be plated in a specific aqueous solution, which will contain some stacked metal compounds, so that after the current passes through the aqueous solution, the metal substances in the solution will be separated and fixed in the immersed part of the screw .

2. Non-standard screws hot dip galvanized

Hot-dip galvanizing is to immerse fasteners of carbon steel composition in a molten zinc bath at a heat of about 510°C, so that the iron-zinc alloy on the surface of the fasteners becomes passivated zinc, but hot-dip galvanizing The price is higher than electroplating.

3. Mechanical plating of non-standard screws

Non-standard screw mechanical coating refers to the impact on the surface of fasteners by coating metal powder through specific physical and chemical methods. So that the surface of the fastener forms a coated metal in the form of cold welding to cover the surface effect. This kind of mechanical coating is mainly applied to some parts, such as non-standard nuts and washers.