After the surface treatment of the all-stainless steel rivet is treated by mechanical and chemical methods, the purpose is to impart an aesthetically pleasing and anti-corrosive effect on the surface of the product, which is formed on the surface of the product by forming a cover layer on the surface of the fastener such as a rivet. A layer protects the protective layer of the body.
There are two main surface treatment methods for all stainless steel seal end blind rivets. One is electroplating, which is to immerse all stainless steel closed rivet parts subjected to electroplating in an aqueous solution containing a deposited metal compound, and to pass current through the plating solution to precipitate electroplated metal. And deposited on the part. Generally, plating is performed by galvanizing, copper, nickel, chromium, copper-nickel alloy, etc., and boiled black (blue), phosphating, and the like are sometimes included.
Another type is hot dip galvanizing, which is accomplished by immersing all stainless steel seal end blind rivet in a bath of molten zinc at a temperature of about 510 °C. The result is that the iron-zinc alloy on the surface of the steel piece gradually becomes passivated zinc on the outer surface of the product. Hot dip aluminizing is a similar process.
The plating metal is not uniformly deposited on the peripheral edge during plating, and a thicker coating is obtained at the corner. In the threaded portion of the fastener, a relatively thick coating is located on the crest of the thread, gradually thinning along the side of the thread, and depositing thinner at the bottom of the tooth, while hot dip galvanizing is just the opposite, thicker coating is deposited inside the corner and At the bottom of the thread, the mechanical plating of the plated metal tends to be the same as that of hot dip coating, but it is smoother and much more uniform over the entire surface.http://www.yukerivet.com/