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本文从淬火工艺最佳化和节能的角度,对盐浴淬火工艺中的加热时间进行了研究与实践。盐浴加热时间现在大多是采用加热系数α为0.4～0.6min/mm来计算。本文通过试验和实践提出,对于碳素结构钢、碳素工具钢和合金结构钢的加热时间取加热系数α为0.15～0.20min/mm计算,从零件的淬透性、淬硬性、金相组织和机械性能等方面来看是可行的。这样可将零件在盐浴炉中的加热时间缩短一半,对于细化晶粒、防止氧化脱碳和节省能源都是有利的。
This article from the quenching process optimization and energy saving point of view, the salt bath quenching process heating time for research and practice. Salt bath heating time is now mostly used heating coefficient α is 0.4 ~ 0.6min / mm to calculate. In this paper, through experiments and practices, it is proposed that for the heating time of carbon structural steel, carbon tool steel and alloy structural steel, the heating coefficient α is calculated from 0.15 to 0.20 min / mm, the hardenability, hardenability, microstructure And mechanical properties and other aspects is feasible. This shortens the heating time of the part in the salt bath furnace in half, which is advantageous for grain refinement, oxidation decarburization and energy saving.