40Cr钢活塞开裂原因分析  

Cracking Analysis on 40Cr Steel Piston

作　　者：田香菊[1] 郑建军[1] 孙钢[1] 

机构地区：[1]太原重型机械学院材料分院,山西太原030024

出　　处：《金属热处理》2004年第7期81-83,共3页Heat Treatment of Metals

摘　　要：对 4 0Cr钢活塞端面出现的锯齿状裂纹进行了检验和分析。结果表明 ,活塞开裂的主要原因是表面淬火加热时的局部温度过高 ,导致过热。The sawtooth cracks on the end-plane of 40Cr steel pistons was detected and analyzed.The results show that the reasons causing cracking is mainly due to locally over-heated and over-burnt of the piston during the surface quenching.

关 键 词：活塞 表面淬火 开裂 

分 类 号：TG157[金属学及工艺—热处理]