碳钢铸件化学成分和力学性能的统计回归分析.pdfVIP

学兔兔 May 2010 铸 造 VO1．59 NO．5 FOUNDRY ·499· 碳钢铸件化学成分和力学性能的统计回归分析 杨玉民 ，周校民 ，秦 怀 ，任尊洪 ，周兴宇 (1．西南科技大学制造学院，四川绵阳621010；2．四川矿山机器 (集团)有限责任公司，四川江油621701) 摘要：通过碳钢铸件化学成分与力学性能的多元线性回归分析，得出碳钢铸件各主要化学元素和力学性能(屈服强 度、抗拉强度、伸长率、断面收缩率)的关系。生产中根据碳钢铸件的化学成分，利用这种关系可以推算出铸件的力 学性能，从而降低试验成本；同时可以指导工艺设计部门改进冶炼浇注工艺，优化配方，以最低的成本达到零件要求 的力学性能。 关键词：碳钢铸件；多元线性回归；化学成分；力学性能 中图分类号：TG1 15．5 文献标识码：A 文章编号：1001—4977(2010)05—0499—03 StatisticaI Regression Analysis of Carbon SteeI Casting ChemicaI Composition and Mechanical Properties YANG Yu-min ，ZHOU Xiao-min’，QIN Huai ，REN Zhun—hong ，ZHOU Xing—yu (1．School of Manufacturing Science and Engineering，Southwest University of Science and Technology，Mianyang 621010，Sichuan，China；2．Sichuan Mining Machinery(Group)Co．，Ltd。， Jiangyou 621 701，Sichuan，China) Abstract： Through the multiple Iinear regression analysis of carbon steeI casting chemical composition and mechanical properties．the relationship between the chemicaI composition and mechanical properties of carbon steel casting，such as yield strength，tensile strength，elongation， shrinkage section．was obtained．The relationship can be used in predicting mechanicaI properties of the carbon steeI casting according to its chemicaI composition in practical production and then decrease the cost of experiments．The relationship can also guide the design departments to improve the smelting process and casting process．and optimize the chemical composition．s0 as tO achieve the requirements of the mechanical properties of parts at the Iowest cost． Key WOrds： carbon steeI casting；multiple Iinear regression；chemicaI composition；mechanicaI