Reading volume:19 发表时间:2019/5/8 9:30:54
Today's editor shares: the tempering of the sprocket should be fully and evenly. If you want to understand this topic, let's get to know it with the editor.
For carburized and hardened gears, tempering should be sufficiently uniform so that the quenched martensite can be completely transformed, and can be welded or reduce microcracks.Under the premise of ensuring technical requirements, the hardness of the gear surface should be reduced as much as possible to dissipate quenching.Organizational stress.Production practice has proved that if the gear with grinding cracks is re-tempered and then completely insulated, it can be ground and the grinding cracks can be dissipated.
Introduction of related issues:
Introduction of heat treatment process method of sprocket:
Surface heat treatment can be used for flame quenching, medium and high frequency surface quenching and chemical heat treatment. Among them, high frequency and medium frequency surface quenching are widely used.The cooling medium of high frequency, intermediate frequency and flame quenching thermometer is 850C950C.Due to the poor thermal conductivity of cast iron, the heating speed should not be too fast, and the unit power is less than that of the same type of steel, otherwise cracks and melting will occur.After the cast iron is quenched by high-frequency heating, it is generally cooled by spraying water or an aqueous solution of polyvinyl alcohol.
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