摩托车技术
摩託車技術
마탁차기술
MOTORCYCLE TECHNOLOGY
2011年
10期
51-52
,共2页
发动机轴类件%马氏体%内应力%磨削裂纹
髮動機軸類件%馬氏體%內應力%磨削裂紋
발동궤축류건%마씨체%내응력%마삭렬문
Shaft-like category parts Mastenite Inner stress Grinding cracks
轴类零件磨削时显微组织中的残余奥氏体因受磨削热的影响必将发生分解,并逐渐转变为马氏体,引起工件表面体积膨胀,导致组织应力产生,进而促进裂纹的形成。因此,工件内部残余奥氏体量较高时,易产生磨削裂纹。
軸類零件磨削時顯微組織中的殘餘奧氏體因受磨削熱的影響必將髮生分解,併逐漸轉變為馬氏體,引起工件錶麵體積膨脹,導緻組織應力產生,進而促進裂紋的形成。因此,工件內部殘餘奧氏體量較高時,易產生磨削裂紋。
축류령건마삭시현미조직중적잔여오씨체인수마삭열적영향필장발생분해,병축점전변위마씨체,인기공건표면체적팽창,도치조직응력산생,진이촉진렬문적형성。인차,공건내부잔여오씨체량교고시,역산생마삭렬문。
The retained austenite in microscopic structure when grinding shaft-like category parts will resolute because of the influence of the grinding heat, and gradually be transferred into mastenite, which will cause the expansion of the surface volume and lead to the production of structure stress, thus promoting the formation of cracks. Therefore, if the retained austenite is higher in the inner of the parts, great cracks will be easily found.
