Stainless steel drill tail screws are beautiful in appearance, durable and strong in corrosion resistance. They are widely used for fastening more expensive machine parts. They are used in machinery, petrochemical, communication, chemical
Industry, construction, shipbuilding, automobile and other industries.Security Screws
The tail of the stainless steel drill tail screw is drill tail or pointed tail, no auxiliary processing is required, no need to drill in advance, it can be directly drilled, tapped and locked on the fixed material and base material, greatly saving
Save construction time. Compared with ordinary screws, it has high tenacity, pulling force and maintenance force, and the combination will not loosen for a long time. It is safe to use, drilling and tapping can be completed at one time, and the operation is simple.Stainless Steel Screws
1. Cleaning process
This is a very important process that requires great care, usually with a silicate cleaner, and attention needs to be paid to whether there is any residue on the surface. The rinsing step is using silicic acid
Salt cleaner after cleaning is done. The standard parts of the parts are rusted during flushing, and the water used for flushing should be replaced frequently.Machine Screw
2. Heating process
The main process of tempering and heating of drill tail snails requires reasonable stacking, and attention should be paid to controlling the oxidation of drill tail snails. The stacking should be combined when tempering and heating, otherwise it will cause slight oxidation of the quenching oil
3. Turn black
There will be blackening on the surface of the parts and the chemical will be reversed, indicating that the external cleaning work is not complete and the alkaline residue on the surface is not completely removed
4. Excessive corrosion
If this phenomenon occurs, it means that the quenching oil has been used for too long, and new oil needs to be added or replaced.
5. Slippery phenomenon
White residues of phosphide on the surface of high-strength screws indicate (point 1) that the operation was not carefully checked.
