The surface treatment of self-drilling screws requires specific procedures. What manufacturing processes are generally used for surface treatment? Hebei Wotu Fastener Manufacturing Co., Ltd. will explain oxidation treatment below.
The surface treatment of self-drilling screws requires specific procedures. What manufacturing processes are generally used for surface treatment? Hebei Wotu Fastener Manufacturing Co., Ltd. will explain oxidation treatment below.
Black coating with oil is a popular plating for industrial fasteners because it is the cheapest and looks good until the oil runs out. Since black coating has almost no rust-preventing ability, it will rust quickly after the oil is removed. Even in an oiled state, its neutral salt spray test result is only 3-5 hours. At the same time, blackened self-drilling screw fasteners have poor torque-preload consistency. To improve this, grease can be applied to the internal threads before screwing them in during assembly. Hebei Wotu Fastener Manufacturing Co., Ltd. (formerly Handan Pingyuan High Strength Fastener Manufacturing Co., Ltd.), a manufacturer of self-drilling screws, was founded in the 1990s and is one of the largest high-strength fastener manufacturers in North China.
Fixed anchor bolts, also known as short anchor bolts, are cast in with the foundation and used to secure equipment that does not experience strong vibration or impact. 1. Fixed anchor bolts, also known as short anchor bolts, are cast in with the foundation and used to secure equipment that does not experience strong vibration […]
A screw is a tool that uses the physical and mathematical principles of inclined planes, circular rotation, and friction to gradually tighten objects and machine parts. A self-drilling screw is a screw with a self-tapping drill bit at its tip. Screws are a common invention of humankind throughout history, and in terms of application, they […]
