The Influence of Hard Alloy Material Mold Core on the Life of Wire Drawing Die

The hard alloy used for wire drawing dies is a carbide cobalt type alloy with a low cobalt content. It has good wear resistance, impact resistance, polishing and corrosion resistance, is easy to repair, and has a low price. It is a commonly used material for making wire drawing die cores and is widely used for drawing coarse and medium wires. Research has shown that improving the composition and microstructure of hard alloys, controlling the fluctuation of carbon content, and refining the particles of carbides can improve the performance of materials and extend their service life. At home and abroad, hot isostatic pressing (HIP) treatment, ultrafine grain technology, and the addition of rare earth elements are used to reduce porosity, refine grains, improve alloy hardness, and reduce friction coefficient; And use chemical vapor deposition (CVD) and physical vapor deposition (PVD) methods to form diamond films or titanium nitride coatings on the surface of hard alloys, improving the surface strength of the alloy.