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Jungu Moulds Metal Die Used for Bolt

Cold heading moulds are special moulds for cold heading process, which are mainly used to form parts by processing metal materials (such as wires and bars) under pressure at room temperature. Cold heading process is widely used in the manufacture of bolts, nuts, screws, rivets, pins and other standard and shaped parts. The design and manufacturing quality of cold heading moulds directly affects the precision, surface quality and production efficiency of the products.

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Product Description

Materials for cold heading moulds

Cold heading moulds need to withstand high pressure, high impact and friction, so the material requirements are very high. Commonly used mould materials include:

High Speed Steel (HSS):

With high hardness, high wear resistance and good toughness, it is suitable for making punches and concave moulds.

Tungsten carbide (Carbide):

With very high hardness and wear resistance, suitable for the manufacture of high-precision, high life-span moulds.

Tool Steel:

Such as Cr12MoV, DC53, etc., with good wear resistance and toughness, suitable for manufacturing small and medium-sized moulds.

Surface treatment:

In order to improve the wear resistance and service life of moulds, surface treatment is usually carried out on the moulds, such as nitriding, titanium plating, PVD coating and so on.