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Surface grain refinement hot shearing method and surface grain refinement hot shearing component
Surface grain refinement hot shearing method and surface grain refinement hot shearing component
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机译:表面晶粒细化热剪切方法和表面晶粒细化热剪切组件
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摘要
Provided is a surface layer grain refining hot-shearing method including: heating and keeping a steel sheet in a temperature range of from Ac3 to 1400°C to austenitize the steel sheet; subsequently shearing the steel sheet in a state in which the steel sheet is placed on a die; and quenching by rapidly cooling the sheared steel sheet, wherein a start temperature of the shearing is set to be a temperature (°C) obtained by adding a temperature of from 30°C to 140°C to a previously measured Ar3 of the steel sheet.
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