In the fields of instrumentation, precision machinery, chemicals, medical equipment, measuring instruments and home appliances, a variety of stainless steel screws and rivets with good corrosion resistance are used as fasteners. As far as the screws are concerned, in addition to the standard parts, there are many complicated shapes of screws - the heads are semi-circular, hexagonal; there are holes in them, some have grooves, and some have grooves Glyph. Because the screws are mostly made by processing the wire through cold heading, cutting, turning, etc., the stainless steel wire is required to have good cold heading performance, turning performance, corrosion resistance and certain mechanical properties.
The main problem in the process of making screws with stainless steel wire is that the head of the screw is easy to crack when cold rolling, followed by the poor turning performance of stainless steel, low production efficiency and high cost, especially for making high-strength stainless iron screws. More prominent.