1. Rinsing the self-drilling screw is crucial and requires meticulous attention, as residue may remain on its surface. This rinsing step should be performed after cleaning with a silicate cleaning agent.
2. Proper stacking is essential during tempering of the self-drilling screw; otherwise, slight oxidation may occur in the quenching oil.
3. The appearance of white phosphide residue on the surface of high-strength screws indicates insufficient attention to detail during inspection (point 1).
4. Blackening of the component surface due to chemical reaction indicates incomplete heat treatment and incomplete removal of alkaline residues. 5. Standard parts may rust during rinsing, and the water used for rinsing should be changed frequently.
6. Excessive rust indicates that the quenching oil has been used for too long and needs to be replaced with new oil.
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 […]
