Drawing dies can be divided into alloy steel dies, cemented carbide dies, natural diamond dies, polycrystalline drawing dies diamond dies, CVD diamond dies, ceramic dies, etc. It is widely used in high-tech industries such as electronic devices, radar, television, instrumentation and aerospace, with extremely strong wear resistance and extremely long service life.

        For example, when drawing copper wires of the same diameter, the service life of polycrystalline diamond dies is 300 to 500 times the life of hard alloy dies, and when drawing nickel wires is only 80 to 100 times, when drawing molybdenum wires, The life span is only 50 to 80 times that of cemented carbide molds, and when carbon steel is drawn, the life of polycrystalline diamond molds is only 20 to 60 times that of cemented carbide molds.

        Blind selection leads to complicated friction and wear of the drawing die, generally divided into two categories: damage and friction and wear. The damage of the wire drawing die can be divided into ring damage, tensile damage, shear damage and support surface damage, etc. Friction and wear can be divided into abrasion wear, friction wear, corrosion wear, abrasion and wear caused by fine particles.

        The above forms of damage and friction and wear may often be intertwined, which makes it more difficult to analyze the damage and wear mechanism of the drawing die. But in general, the order of wear resistance of drawing dies of various materials from high to low is: diamond drawing dies (without considering the problem of natural diamond anisotropy)-ceramic drawing dies-carbide drawing dies- -Alloy steel mold that has been eliminated.