Tue Apr 25 22:47:37 CST 2023
Mould materials are the material and technical basis of the mould manufacturing industry. Among them, mould steel is the traditional mould material, its varieties, specifications, quality on the performance of the mould, service life and manufacturing cycle plays a decisive role. Mold steel grade control is based on the different needs of domestic and foreign mold steel, the same category of steel at home and abroad different naming and do the categorization, greatly improve the efficiency of the application of mold steel, in recent years, domestic and foreign mold steel production, production technology, technology and equipment, quality, variety and other aspects have made relatively rapid development. Domestic also produced a number of high-quality platform-type enterprises. Objectively promote the promotion and popularity of foreign steel grades in the country, mold steel grade control also came into being.
The processing of moulds, due to the wide range of uses of moulds, a variety of working conditions vary greatly, so the manufacture of moulds with a wide range of materials, the most widely used in the mold materials when the mold steel. From - general carbon structural steel, carbon tool steel, alloy structural steel, alloy tool steel, spring steel, high-speed tool steel, stainless heat-resistant steel until the need to adapt to the special mold maraging steel and powder high-speed steel, powder high-alloy die steel, etc.. Mould steel can be generally divided into cold work mould steel, hot work mould steel and plastic mould steel according to the use of three categories
Cold work moulds
Cold work mould steel is mainly used for the manufacture of cold state of the workpiece for the press molding mould. Such as: cold punching dies, cold stamping dies, cold drawing dies, embossing dies, cold extrusion dies, thread pressing dies and powder pressing dies, etc. The range of cold work tool steel is very wide, . From various carbon tool steels, alloy tool steels and high speed tool steels to powdered high speed tool steels and powdered high alloy tool steels. Cold work tool steels are vacuum degassed and refined steels with pure internal quality, good machinability, significantly improved cutting, good hardenability, air cooling hardening and hardening, excellent wear resistance, good toughness, and can be used as stainless steel and high hardness materials for punching and cutting dies.
Hot work moulds
Hot work die steel is mainly used for the manufacture of high temperature state of the workpiece for pressure processing of the die. Such as: hot forging dies, hot extrusion dies, die-casting dies, hot forging dies, etc.. Commonly used hot work die steel are: high carbon content added Cr, W, Mo, V and other alloying elements of alloy die steel; special requirements of hot work die steel, sometimes using high alloy austenite heat-resistant die steel manufacturing.
Because of the many varieties of plastic, plastic products requirements are also very different, the manufacture of plastic mould materials also put forward a variety of different performance requirements. Therefore, many developed industrial countries have formed a wide range of plastic moulds with steel series. Including carbon structural steel, carburized plastic mould steel, pre-hardened plastic mould steel, age-hardened plastic mould steel, corrosion-resistant plastic mould steel, easy to cut plastic mould steel, overall hardened plastic mould steel, maraging steel and mirror polishing with plastic mould steel.