摘要
大型模锻锤杆在锻击机车传动盘时连续出现早期断裂。采用化学成分分析、锤杆表面磨损现象分析、宏观断口分析、硬度检测和显微组织分析等方法,并结合锻造工艺对断裂锤杆进行了综合分析。结果表明:由于锤杆的硬度参数选择偏低,制造过程中存在一定的组织缺陷,同时由于锤杆恶劣的受力条件,导致锤杆在使用过程中出现粘着磨损疲劳断裂。
Early and continuous fatigue failure of 16 t heavy-duty drop hammer rods happened in forging transmission pan, and fracture reasons were analyzed by means of chemical compositions analysis, surface abrasion test and macro fracture analysis, hardness measurement, metallographic examination, and combining with forging technical process. The results shows that agglutionate fatigue failure were resulted from illogical hardness parameters, microstructure defect and bad stress condition.
出处
《理化检验（物理分册）》
CAS
2009年第2期114-117,共4页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
关键词
16t大型热模锻锤
锤杆
粘着磨损
疲劳断裂
16 t heavy-duty die forging hammer
hammer rod
agglutinate abrasion
fatigue failure
