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Manufacturing technology of steel castings
Source: | Author:xinghui | Publish time: 2018-09-15 | 1459 Views | Share:

1, casting steel production technology

For strength, ductility and toughness requests for higher mechanical parts, steel castings are required. The yield of cast steel is inferior to that of the cast iron, which accounts for 15% of the total output of the casting.

1, comply with the chemical composition of cast steel can be divided into two categories of carbon steel and alloy cast steel. Among them, the most widely used carbon cast steel, accounting for more than 80% of the total output of cast steel.

1, carbon cast steel

Individual, the higher the melting point of the low carbon steel ZG15, casting performance is poor, only for the production of motor parts or carburized parts; medium carbon steel ZG25 ~ ZG45, there is higher than that of the comprehensive performance of all kinds of cast iron, which has high strength, a wonderful plasticity and toughness, is suitable for making complex shape, strength and toughness of request high parts, such as train wheels, hammer frame and the anvil, roll and low pressure valves and other is carbon steel in operation of up to a class; the low melting point of high carbon steel of zg55 cast, the casting performance is better than that of carbon steel, but the plasticity and toughness poor only for making more than the number of wear-resistant parts.

2, alloy cast steel

Comply with the amount of alloy elements much, alloy steel can be divided into two low alloy steel and high alloy steel categories.

1) low alloy cast steel, China's important operation of the manganese, manganese silicon and chromium series. Such as ZG40Mn, ZG30MnSi1, ZG30Cr1MnSi1, etc.. Used to make gear, hydraulic machine working cylinder and turbine rotor and other parts, and ZG40Cr1 often operate to produce high strength gear and high strength shaft and other important parts.

2) high alloy cast steel, the existence of wear, heat resistance, corrosion resistance, etc.. Such as high manganese steel ZGMn13, is a kind of wear-resistant steel and important for production in dry operation under working conditions of friction parts, such as excavator grab the wall and grab Qian, man swallow hoop said Mu thumb caries Huan pomfret anchovy indistinct supper Connaught G1Cr18Ni9 and chromium stainless steel ZG1Cr13 and zgcr28 etc., of nitric acid corrosion resistance is high and important for production of chemical, petroleum, chemical and food equipment parts.