Release time：2025-09-12
(1) Alloy steel die is an early wire drawing die manufacturing material. The materials used to make alloy steel die are mainly carbon tool steel and alloy tool steel. However, due to the poor hardness and wear resistance of alloy steel die and short life, it cannot meet the needs of modern production, so alloy steel die is quickly eliminated, and alloy steel die is almost invisible in current production and processing.
(2) The cemented carbide die is made of cemented carbide. The cemented carbide belongs to the tungsten-cobalt alloy, and its main components are tungsten carbide and cobalt. Tungsten carbide is the "skeleton" of the alloy, which mainly plays a hard and wear-resistant role; cobalt is the bonding metal and is the source of alloy toughness. Therefore, the cemented carbide die has the following characteristics compared with the alloy steel die: high wear resistance, good polishing, low adhesion, low friction coefficient, low energy consumption, and high corrosion resistance. These characteristics make the cemented carbide wire drawing die have a wide range of processing adaptability and become the most widely used wire drawing die die today.
(3) Natural diamond is an allotrope of carbon, and the molds made with it have the characteristics of high hardness and good wear resistance. However, natural diamond is brittle and difficult to process, and is generally used to make wire drawing dies with a diameter of less than 1.2mm. In addition, natural diamond is expensive and in short supply, so natural diamond molds are not the economical and practical wire drawing tools that people ultimately seek.
(4) Polycrystalline diamond is made of carefully selected high-quality synthetic diamond single crystals plus a small amount of silicon, titanium and other binders, which are polymerized under high temperature and high pressure conditions. Polycrystalline diamond has high hardness and good wear resistance. Compared with other materials, it has its own unique advantages: due to the anisotropy of natural diamond, during the wire drawing process, when the entire hole is in working condition, natural diamond will wear at a certain position in the hole; while polycrystalline diamond is polycrystalline and has isotropic characteristics, thus avoiding the phenomenon of uneven wear and uneven die hole. Compared with cemented carbide, the tensile strength of polycrystalline diamond is only 70% of that of commonly used cemented carbide, but 250% harder than cemented carbide, which makes the polycrystalline diamond die have more advantages than the cemented carbide die. The drawing die made of polycrystalline diamond has good wear resistance, uniform wear of the inner hole, strong impact resistance, high wire drawing efficiency, and the price is much cheaper than that of natural diamond. Therefore, the current polycrystalline diamond drawing die is widely used in the wire drawing industry.
(5) CVD (Chemical Vapor Deposition) not only has the smoothness and temperature resistance of single-crystal diamond, but also the wear resistance and low price of polycrystalline diamond. It has achieved good results in replacing rare natural diamond in the preparation of wire drawing die tools. Its wide use will bring new vitality to the wire drawing die industry.
(6) High-performance ceramic materials have the characteristics of high hardness, good wear resistance, strong chemical stability, excellent high temperature mechanical properties and not easy to bond with metals, etc., and can be widely used in the processing of difficult-to-machine materials. In the past three decades, due to the effective control of raw material purity and grain size in the ceramic material manufacturing process, various carbides, nitrides, borides, oxides, whiskers or small amounts of metals have been developed. And the use of a variety of toughening and strengthening mechanisms has greatly improved the strength, toughness and impact resistance of ceramic materials...
(7) The coated wire drawing die is a newly developed new technology, and its main method is to coat the metal film on the cemented carbide wire drawing die. The metal film is pure titanium coating, which not only has good finish and temperature resistance, but also has the advantages of titanium wear resistance and low price. It has achieved good results in replacing the cemented carbide wire drawing die tool...
