Cold Heading Dies

In terms of the manufacturing materials of cold heading dies, cold heading dies are usually made of high-quality alloys, such as alloy tool steels. These materials are selected because they possess excellent properties like high hardness, good wear resistance, and sufficient toughness, which are required to withstand the high-intensity pressure and friction during the cold heading operation. However, there are several difficulties in manufacturing cold heading dies. Firstly, extremely high precision is required. The dimensional tolerances of the die cavity must be strictly controlled, as even a slight deviation may lead to defective products. Secondly, severe wear and tear will occur during the manufacturing process. The repeated high-pressure impacts and friction will quickly damage the die surface, especially in the working areas, which will significantly shorten the service life of the die. In addition, designing dies for manufacturing complex shapes can be a quite challenging task, which requires advanced design techniques and precise calculations. Moreover, it is not easy to select appropriate materials and conduct heat treatment, because a balance between different properties needs to be achieved to avoid problems such as embrittlement or excessive wear.