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What are the classifications of forging mold materials?
HMAX series mold steel for hot forging mold steel: HMAX-D\HMAX-R\HMAX-3\HMAX-4\HMAX-5\HMAX-6.HMAX new high red hardness, high strength, toughness and high wear resistance mold series, among which HMAX- 3 Mold steel is one of the HMAX mold steel series. It has a pure matrix and uniform structure. It is a high-performance chromium-molybdenum-vanadium alloy steel with good resistance to thermal cracking, cracking, thermal wear and plastic deformation. It has the following characteristics: excellent toughness and ductility in all directions, good tempering resistance, good high temperature strength, excellent hardenability, heat treatment, and good dimensional stability after surface coating.
What are the types of forging and what are their characteristics?
According to the forging temperature, it can be divided into hot forging, warm forging and cold forging. The starting recrystallization temperature of steel is about 727°C, but 800°C is generally used as the dividing line. Above 800°C is hot forging; between 300 and 800°C is called warm forging or semi-hot forging, and forging is performed at room temperature. is called cold forging. Forgings used in most industries are hot forgings. Warm forging and cold forging are mainly used for forging parts such as automobiles and general machinery. Warm forging and cold forging can effectively save materials.
What is the black stuff that comes off when steel is forged or forged?
Oxide scale is a corrosion product formed by the oxidation of steel at high temperatures. It is composed of ferrous oxide, ferric oxide, and ferric oxide. From the inside to the outside: ferrous oxide, ferric oxide, ferric oxide.
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