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How much do you know heat treatment of steel! Casting manufacturing choose nanjing which is better!

by:BoQiao Machinery     2020-11-19
How much do you know heat treatment of steel! Casting manufacturing choose nanjing which is better! Steel heat treatment is to control the steel microstructure, which is one of the indispensable for cast steel production process. Steel shall be used after heat treatment. Because of as-cast steel internal porosity, crack, shrinkage cavity and shrinkage, coarse grains, organization and uneven residual stresses in the casting defects, such as make the strength, especially the plasticity and toughness of steel is reduced greatly. Hotline: 020-86 22139325 to fine grains and homogeneous groups and eliminate internal stress, steel must be normalizing or annealing treatment. After normalizing treatment of steel, its mechanical properties is high after annealing, and a low cost, so the application more. But as a result of normalizing treatment can cause a large internal stress annealing is only applicable to carbon content less than 0. 35% of the steel. Because of the low carbon steel plasticity is good, not easy cracking on cooling. To reduce internal stress, the steel after normalizing, also should be high temperature tempering. The carbon content & ge; 0. 35%, complicated structure, and easy to produce cracks of steel, annealing treatment only. Should not be steel quenching, or how much do you know to cracking of heat treatment of steel! Casting manufacturing choose nanjing which is better! Under the small make up take you know nanjing most worthy of choice of foundry & ndash; — Nanjing foundry co. , LTD. , the history of professional strength and modern management mode to achieve the excellent complementary and fusion, through constant innovation and development, now has luxuriant turned, coruscate gives new vitality, casting products with annual production heat resistant, wear resistant cast steel, carbon steel, low alloy steel casting, grey iron castings, ductile iron parts, stainless steel castings and all kinds of large and medium-sized castings 80000 tons of capacity, is the domestic market competitiveness of the cast steel, cast iron, stainless steel castings and profile production base. Hotline: 020-86 Address: 22139325 nanjing city, jiangsu province road 200 new district wu bonanza
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