【作者】 张星； 张治民； 李保成；

【Author】 ZHANG Xing ZHANG Zhi-min LI Bao-cheng(North China Institute of Technology,Tai Yuan 030051; Engineering Technology Research Center for Integrated Precision Forming of ShanXi Province,Tai Yuan 030051)

【机构】 华北工学院材料工程系； 山西省集成精密成形工程技术研究中心；

【摘要】 借助于现代冶金分析技术,论文主要对温挤成形齿轮的组织、性能进行了研究。结果表明:1)用新工艺生产的齿轮可以得到完整的流线分布,其形状为沿齿形平行于齿表面,并对称分布,消除了原材料各向异性对齿轮性能的影响,2)先渗后挤可使晶粒度由传统工艺的7-8级提高到10-11级,特别是齿根部晶粒更细。更多还原

【Abstract】 In this paper,By virtue of mordern metallography analyse technology The microstructure and properties of warm extrusion formed gears were studied and the results indicated: 1) The new technology can get intact flow line,its form along teeth shape parallel on teeth surface,symmetrically distributed,so it improve strength and toughness of the gear.2) the grain degree of warm-extrusion gear can rise from No7-8 to No10-11,especially,the grain of the tooth-heel is more fine; The material fatigue strength and bend strength have been effectively improved.更多还原