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高温合金高速切削锯齿形切屑应变与应变率研究

, PP. 225-228

Keywords: 高速切削,锯齿形切屑,高温合金,切屑变形,应变

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Abstract:

在分析锯齿形切屑形成的基础上,将切屑单个锯齿视为梯形,建立梯形各顶点的应变和应变率计算解析模型。进行高速切削GH4169实验,并收集实验获得的切屑。运用解析模型,分析不同切削速度下,高温合金GH4169切屑的变形情况。实验结果表明:在切削速度200~1000m/min范围内,随着切削速度的增加,GH4169切屑变形程度增大,应变和应变率最大可分别达到4.91和4.59×106s-1。

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