Low Carbon Steel Wire Drawing Die

Low carbon steel wire drawing die

Drawing die is one of the important tools for steel wire drawing production in the metal products industry. The quality level of low carbon steel wire drawing die directly affects wire quality, output, mold loss and economic benefits. At present, the hard alloy wire drawing die is widely used in China, and the service life is short. Therefore, strengthening the research on the material of the wire drawing die and the geometry of the die hole is an important way to extend the service life of the wire drawing die and realize high speed, continuous and automatic production. High quality special steel wire. Since the drawing die is a hole type which uses a common carbon steel wire and a spring steel wire, the die life is short and the die change is frequent, which affects the steel wire yield. There is an urgent need to innovate the current drawing die. In the metal product drawing industry, the low carbon steel wire drawing die is a very important tool for consumption. The choice of wire drawing material plays a key role in the quality of the wire drawing die. The physical and chemical properties of the wire drawing die must meet the requirements of high hardness, impact resistance, wear resistance and low friction coefficient.

At present, the wire drawing die on the market mainly has a cemented carbide die, a polycrystalline die and a CVD diamond die. The life of the carbide die is lower than that of the polycrystalline die and the CVD diamond die, but its cost is relatively low, so it is widely used in the wire drawing industry, especially suitable for drawing wires or profiles with large diameter (8mm or more). The carbide drawing die core is generally made by using tungsten carbide as a raw material and sintering with a certain amount of cobalt as a binder. Since the tensile strength and microhardness of the binder cobalt are very low, in the wire drawing production, adhesive wear and abrasive wear are likely to occur at the contact surface between the wire and the die hole, thereby affecting the final of the low carbon steel wire drawing die. life. In this paper, the research progress of improving the performance of hard alloy wire drawing die is introduced from three aspects: improving the core material, applying coating on the surface and heat treatment.

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