耐热球墨可锻铸铁的硬度与切削加工性  

Hardness and cutability of heat-resisting nodular melleable cast iron

作　　者：古可成[1] 周瑞[1] 丁晖[1] 宫兆海[1] 段华伟[1] 

机构地区：[1]沈阳工业大学材料科学与工程学院,辽宁沈阳110023

出　　处：《沈阳工业大学学报》2003年第1期7-10,共4页Journal of Shenyang University of Technology

摘　　要：观察了耐热球墨可锻铸铁经洛氏硬度试验后留下的凹坑及凹坑纵切面的形貌.结合金属塑性成型原理及金属切削变形原理,初步分析了铸铁在硬度试验中的受力情况及变形过程.并对耐热球墨可锻铸铁的硬度(HRC30～35)和良好的切削加工性的原因做出了解释.The appearance of pothole and the longitudinal section of pothole left by the experiment of Rockwell hardness of heatresisting nodular malleable cast iron was surveyed.Combined the principle of metal plastic forming and the principle of metal cutting deformation,the stress and deformation of cast iron were preliminarily analyzed in hardness experiment.At last, the reason was explained towards the state that heatresisting nodular malleable cast iron have both higher hardness(HRC?3035) and better cutting capability.

关 键 词：耐热球墨可锻铸铁 硬度 切削加工性 塑性成型 切削变形 

分 类 号：TG143.5[一般工业技术—材料科学与工程] TG501.1[金属学及工艺—金属材料]