PCD and tungsten carbide are the main materials of wire drawing die. There are great differences in the application of the two materials, and each has its own characteristics. In addition, there are steel drawing dies. As a professional manufacturer of carbide wire tools, UKO will analyze the characteristics of different material drawing dies for you.
Diamond is the highest hardness, excellent wear resistance, brittle, and expensive mold material. The PCD wire drawing die is very difficult to process. Generally, the diameter of wireless than 1.0mrn is made. At present, the diameter of the largest diamond mold has reached 2.5mrn.
Tungsten carbide is used, which is composed of tungsten carbide and cobalt. Tungsten carbide is hard and wear-resistant, which is the “skeleton” of the alloy. Cobalt is a bonding metal, which increases the toughness of the alloy. With the increase of cobalt content, the density, hardness, compressive strength, elastic modulus, thermal conductivity, and resistivity of the alloy decrease, while the toughness and bending strength increase. With the increase of WC content, the properties of the alloy are just opposite to those with the increase of cobalt content. Cemented carbide has good properties of high wear resistance, corrosion resistance, alkali resistance, emulsion resistance, and other lubricating materials. The hard alloy drawing die is widely used in the drawing production of various metals and alloy wires.
In terms of other die making materials, steel drawing dies have low cost, convenient processing, and repair. But they have low hardness, poor wear resistance, and short service life. Since the 1970s, they have actually been replaced by die making materials such as cemented carbide and PCD.
The hardness and wear resistance of synthetic diamond (PCD) are second only to natural diamond, and its price is obviously lower than that of natural diamond.PCD wire drawing dies made of synthetic diamond has been used in rough drawing and medium drawing of copper wire and steel wire.