(1) alloy steel mold is the early drawing die manufacturing
materials. The material used to make the alloy steel mold is mainly
carbon tool steel and alloy tool steel. However, due to the hardness of
the alloy steel mold and poor wear resistance, short life, can not meet
the needs of modern production, so the alloy steel mold was soon
eliminated, in the current production and processing has almost no alloy
steel mold.
(2) Carbide molds are made of hard alloy. Carbide belongs to tungsten cobalt alloy, its main component is tungsten carbide and cobalt. Tungsten carbide is the alloy "skeleton", mainly from the hard wear resistance; cobalt is a bonding metal, is the source of alloy toughness. Therefore, the cemented carbide die has the following characteristics compared with the alloy steel mold: high wear resistance, good polishing, little adhesion, low coefficient of friction, low energy consumption, high corrosion resistance, and these characteristics make the carbide drawing Mold has a wide range of processing adaptability, become the most widely used drawing die.
(3) natural diamond is carbon isomer, with its production of the mold with high hardness, good wear resistance and so on. But the natural diamond brittle larger, more difficult to process, generally used in the manufacture of diameter 1.2mm below the drawing die. In addition, the natural diamond is expensive, the supply shortage, so the natural diamond mold is not the ultimate people seeking the economic and practical drawing tool.
(4) Polycrystalline diamond is carefully selected by the excellent quality of synthetic diamond single crystal with a small amount of silicon, titanium and other bonding agent, in the high temperature and pressure conditions from polymerization. Polycrystalline diamond has a high hardness and good abrasion resistance, and it has its own unique advantages over other materials: due to the anisotropy of natural diamonds, when the entire hole is in the process of drawing In the working state, the natural diamond in the hole will occur in a certain position of wear and tear; and polycrystalline diamond is polycrystalline, with isotropic characteristics, thus avoiding the die hole wear uneven and die hole is not round phenomenon. Compared with cemented carbide, polycrystalline diamond tensile strength is only 70% of the commonly used carbide, but harder than hard alloy 250%, so that the polycrystalline diamond mold than the carbide die has more advantages The With the polycrystalline diamond made of drawing die wear resistance, the hole wear evenly, impact resistance, drawing high efficiency, and the price is much cheaper than natural diamond. So the current polycrystalline diamond drawing die in the drawing industry is widely used.
(5) CVD (chemical vapor deposition) It has the advantages of single crystal diamond finish, temperature resistance, but also has the wear resistance of polycrystalline diamond and the advantages of low price, in addition to rare natural diamond preparation drawing tool Very good results, its extensive use will bring new vitality to the drawing die industry.
(6) high-performance ceramic materials with high hardness, good wear resistance, chemical stability, high temperature mechanical properties and easy adhesion with the metal and other characteristics, can be widely used in difficult processing of materials processing. In the past three decades, the addition of various carbides, nitrides, borides, oxides, whiskers or a small amount of metal has been developed due to the effective control of the purity and grain size of the raw material in the ceramic material manufacturing process. As well as the use of a variety of toughening reinforcement mechanism, so that the strength of ceramic materials, toughness, impact resistance have been greatly improved.
(7) coating drawing die is a newly developed a new technology, the main method is in the carbide drawing die coated with metal film. Metal film is a pure titanium coating, it not only has a good finish, temperature resistance, but also with the wear resistance of titanium and low price advantages, in place of carbide cutting tool tools to achieve good results.
(2) Carbide molds are made of hard alloy. Carbide belongs to tungsten cobalt alloy, its main component is tungsten carbide and cobalt. Tungsten carbide is the alloy "skeleton", mainly from the hard wear resistance; cobalt is a bonding metal, is the source of alloy toughness. Therefore, the cemented carbide die has the following characteristics compared with the alloy steel mold: high wear resistance, good polishing, little adhesion, low coefficient of friction, low energy consumption, high corrosion resistance, and these characteristics make the carbide drawing Mold has a wide range of processing adaptability, become the most widely used drawing die.
(3) natural diamond is carbon isomer, with its production of the mold with high hardness, good wear resistance and so on. But the natural diamond brittle larger, more difficult to process, generally used in the manufacture of diameter 1.2mm below the drawing die. In addition, the natural diamond is expensive, the supply shortage, so the natural diamond mold is not the ultimate people seeking the economic and practical drawing tool.
(4) Polycrystalline diamond is carefully selected by the excellent quality of synthetic diamond single crystal with a small amount of silicon, titanium and other bonding agent, in the high temperature and pressure conditions from polymerization. Polycrystalline diamond has a high hardness and good abrasion resistance, and it has its own unique advantages over other materials: due to the anisotropy of natural diamonds, when the entire hole is in the process of drawing In the working state, the natural diamond in the hole will occur in a certain position of wear and tear; and polycrystalline diamond is polycrystalline, with isotropic characteristics, thus avoiding the die hole wear uneven and die hole is not round phenomenon. Compared with cemented carbide, polycrystalline diamond tensile strength is only 70% of the commonly used carbide, but harder than hard alloy 250%, so that the polycrystalline diamond mold than the carbide die has more advantages The With the polycrystalline diamond made of drawing die wear resistance, the hole wear evenly, impact resistance, drawing high efficiency, and the price is much cheaper than natural diamond. So the current polycrystalline diamond drawing die in the drawing industry is widely used.
(5) CVD (chemical vapor deposition) It has the advantages of single crystal diamond finish, temperature resistance, but also has the wear resistance of polycrystalline diamond and the advantages of low price, in addition to rare natural diamond preparation drawing tool Very good results, its extensive use will bring new vitality to the drawing die industry.
(6) high-performance ceramic materials with high hardness, good wear resistance, chemical stability, high temperature mechanical properties and easy adhesion with the metal and other characteristics, can be widely used in difficult processing of materials processing. In the past three decades, the addition of various carbides, nitrides, borides, oxides, whiskers or a small amount of metal has been developed due to the effective control of the purity and grain size of the raw material in the ceramic material manufacturing process. As well as the use of a variety of toughening reinforcement mechanism, so that the strength of ceramic materials, toughness, impact resistance have been greatly improved.
(7) coating drawing die is a newly developed a new technology, the main method is in the carbide drawing die coated with metal film. Metal film is a pure titanium coating, it not only has a good finish, temperature resistance, but also with the wear resistance of titanium and low price advantages, in place of carbide cutting tool tools to achieve good results.
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