Cylinder block carbon steel castings are widely used in forging machinery.Cast steel can be divided into carbon cast steel and alloy cast steel according to the chemical composition.In the casting, according to the different casting materials, it can be divided into carbon steel castings, alloy steel castings, high manganese steel castings, stainless steel castings, heat-resistant steel castings.
Carbon steel casting: (1) Low carbon steel casting ZG15 has a high melting point and poor casting performance, only for the manufacture of motor parts carbon steel casting or carburized parts;
(2) Medium carbon steel casting ZG25 ~ ZG45 with comprehensive performance,high strength, good plasticity and toughness which is better than that of cast iron.So it is suitable for the manufacture of complex shapes, strength and high toughness of parts, such as train wheels steel casting, Forging hammers and anvils steel casting, rollers and high pressure valves steel casting, etc. That is the most widely used in carbon steel sand casting;
(3) high carbon steel ZG55 with low melting point and the casting performance is better than the carbon steel, but its plasticity and toughness is poor that only for the manufacture of a small number of wear-resistant steel casting.
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