The mold industry is an integral part of the high-tech industry. For example, the design and manufacture of integrated circuits cannot be done without precision progressive die for lead frames and precision integrated circuit plastic packaging molds; the mold industry is also an important area of high-tech industrialization. Important changes have taken place in CAD/CAE/CAM technology. The improvement of mold development and manufacturing levels is conducive to the use of CNC precision and efficient processing equipment; the application of advanced technologies such as reverse engineering, concurrent engineering, agile manufacturing, and virtual technology in the mold industry It must also be grafted with high-tech such as electronic information to realize high-tech industrialization.
Cold heading is one of the advanced machining processes with less and no cutting. It has the characteristics of high production efficiency, energy saving, material saving, improved mechanical strength and precision of parts, and suitable for mass automated production. It has been widely used. In my country, the main cold heading process Used in fasteners, rolling bearings, roller chains, auto parts, military industry and other industries.
The cold heading of parts is carried out on the cold heading machine.
1. Steel for general load cold heading die
The general load cold working die is mainly used for the production of cold heading parts that are not too complicated in shape, not too large in deformation, and cold heading speed is not very high. The cold heading parts produced are low carbon steel or medium and low carbon steel parts.
2, steel for heavy-duty cold heading die
Heavy-duty cold heading die is used to produce cold heading parts with large deformation and more complicated shapes. Cold heading parts are made of alloy steel or medium-high carbon steel with higher steel strength.
3, new type of steel for cold heading die
my country has introduced foreign steel grades or independently developed more than 10 new steel grades suitable for manufacturing cold heading dies. These new steel grades are characterized by high hardenability and hardenability, and have a high compression yield point. Good wear resistance and toughness.
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