Comparison and Introduction of Cold Heading and Hot Heading Nuts for Fasteners
Time:
2024-01-25
Cold heading is the use of the plasticity of metals, using cold mechanics to apply pressure or cold drawing, to achieve the goal of solid deformation of metals. On the surface, cold heading products look more beautiful and have better smoothness than hot heading products. In terms of use, hot heading nuts generally have higher hardness and strength than cold heading products. For users with high requirements, there are significant differences in materials.
Cold heading is the use of the plasticity of metals, using cold mechanics to apply pressure or cold drawing, to achieve the goal of solid deformation of metals. On the surface, cold heading products look more beautiful and have better smoothness than hot heading products. In terms of use, hot heading nuts generally have higher hardness and strength than cold heading products. For users with high requirements, there are significant differences in materials.
The forging method of thickening the top of a bar or wire at room temperature. Cold heading is mainly used to manufacture parts such as bolts, nuts, nails, rivets, and steel balls. Forging materials can be copper, aluminum, carbon steel, alloy steel, stainless steel, and titanium alloy, with a material utilization rate of 80-90%.
Cold heading is often carried out on specialized cold heading machines, which facilitates continuous, multi station, and automated production. On a cold heading machine, it is possible to sequentially complete processes such as cutting, heading, accumulation, forming, chamfering, wire rolling, diameter reduction, and edge cutting. High production efficiency, up to 300 pieces/minute or more, with a maximum diameter of 48 millimeters for cold heading workpieces.
The schematic diagram of the cold heading bolt process is a typical process for cold heading bolts. The multi-station nut automatic cold heading machine is a multi-station nut automatic cold heading machine. The bar material is automatically fed into a certain length by the feeding mechanism, and is cut into blanks by the cutting mechanism. Then, it is sequentially sent to the accumulation pressing and punching stations by the clamp conveying mechanism for forming.
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Wenzhou Bridge Industrial Park, Yueqing City, Zhejiang Province (North White Elephant)
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