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Heat Treatment of Precision Castings
Release time:
2021-10-29
Due to the different purposes of precision castings, heat treatment is very much, basically can be divided into two categories.
Due to the different purposes of precision castings, heat treatment is very much, the basic can be divided into two categories, one is the organization structure will not change through heat treatment or should not change, the other is the basic organizational structure changes. The heat treatment procedure is mainly used to eliminate internal stress, which is caused by different cooling conditions and conditions during the stainless steel casting process. Microstructure, strength and other mechanical properties, etc., do not change significantly due to heat treatment.
For heat treatment and the main, Al-Qaida has undergone significant changes, which can be roughly divided into five categories:
1, softening annealing: its purpose is mainly to decompose carbide, reduce its hardness, and improve processing performance, for ductile iron, its purpose is to obtain more ferrite tissue.
2, normalizing treatment: the main purpose is to obtain pearlite and sorbite tissue to improve the mechanical properties of stainless steel casting.
3, quenching treatment: mainly to obtain higher hardness or wear strength, at the same time to very high surface wear resistance.
4, surface hardening treatment: mainly to obtain a surface hardening layer, while obtaining a very high surface wear resistance.
5, precipitation hardening treatment: mainly to obtain high strength and elongation does not change violently.
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Xinghua Xingdong Cast Steel Co., Ltd
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Diduo Industrial Park, Xinghua City, Jiangsu Province
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