45Cr9Si3热挤压气门盘部裂口分析  

Crack analysis on 45Cr9Si3 hot extrusion valve skirt

作　　者：艾进 许万剑 赵衡 Ai Jin;Xu Wanjian;Zhao Heng(Jiangsu Shenyuan Group Co.,Ltd.,Taizhou 225721,Jiangsu,China;National Stainless Steel Quality Supervision and Inspection Center(Xinghua),Taizhou 225721,Jiangsu,China)

机构地区：[1]江苏申源集团有限公司,江苏泰州225721 [2]国家不锈钢制品质量监督检验中心(兴化),江苏泰州225721

出　　处：《特钢技术》2023年第2期35-38,共4页Special Steel Technology

摘　　要：某公司使用45Cr9Si3材料采取热挤压工艺生产气门时出现了气门盘部裂口现象。本文通过OM及SEM+EDS等手段对缺陷样品进行分析,以及模拟材料在热挤压过程中的演变过程,分析出缺陷来源于原材料生产过程中的电渣工序,并提出了解决方案。The cracking of the valve skirt occurred when 45Cr9Si3 material was used to produce value by hot extru-sion process in a company.In this paper,the defect samples were analyzed by OM and SEM+EDS,and the evolution pro-cess of the materials in the hot extrusion process was simulated.The result showed that the defects arose from the electro-slag process in the production of raw materials,and the solution was proposed.

关 键 词：45Cr9Si3气门 热挤压工艺 裂口 电渣 

分 类 号：TG764.2[金属学及工艺—刀具与模具]