With the continuous development of science and technology, ordinary bolts can no longer meet the requirements of many industries, followed by a series of non-standard screws. Then someone will ask, what methods are there for non-standard surface treatment of bolts? Next, the bolt non-standard custom manufacturers will take you to understand:
Screw non-standard customization: electroplating
Screw non-standard custom plating usually includes galvanized, copper, nickel. Chromium, copper-nickel alloy, etc. It refers to immersing the fasteners to be electroplated 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 screw’s immersion part.
Screw non-standard customization: hot-dip galvanized
Hot-dip galvanizing is to immerse the fasteners of carbon steel composition in a molten zinc bath at a heat of about 51o C, so that the iron-zinc alloy on the surface of the fasteners becomes passivated zinc
Screw non-standard customization: mechanical plating
Screw non-standard customized mechanical coating refers to the coating of metal powder through specific physical and chemical methods, which impacts the surface of fasteners. In this way, the surface of the fastener is coated with metal in the form of cold welding to cover the surface. This mechanical coating is mainly suitable for some components, non-standard nuts and washers, etc.