张志敏,余伟,蔡庆伍

• 1:北京科技大学冶金工程研究院

摘要(Abstract)：

为了确定中厚板辊式淬火过程中的最佳换热系数,进行了12MnNiVR钢板淬火过程中的温度场和应力场计算。依据温度场分析提出了中厚板在淬火机高压区内淬火过程中换热系数的确定方法,并用该方法确定了不同厚度12MnNiVR钢板在高压区淬火的换热系数。应力场分析表明,在低压区采用低的换热系数,可显著降低钢板淬火过程中产生的热应力及残余应力。20mm厚12MnNiVR钢板低压区淬火,平均换热系数确定为1 kW/(m2.K),与采用8 kW/(m2.K)相比,钢板表面残余压应力与中心残余拉应力的差值可降低181.2 MPa。

关键词(KeyWords)： 中厚板;换热系数;辊式淬火;温度场;应力场

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 张志敏,余伟,蔡庆伍

DOI: 10.13289/j.issn.1009-6264.2013.03.034

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