摘要
采用化学成分分析、金相检验和硬度测试等方法对3.6 mm 55CrSi钢气门弹簧在台架试验中的断裂原因进行分析。结果表明:由于钢丝表面存在的脆性非金属夹杂物,导致气门弹簧在试验时出现早期疲劳断裂。
The fracture reason of 43. 6 mm 55CrSi steel valve spring in dais experiment was analyzed by means of chemical composition analysis, metallographic examination and hardness testing. The results showed that the brittleness nonmetallic inclusion on the steel wire surface led to early fatigue fracture.
出处
《理化检验（物理分册）》
CAS
2009年第7期446-447,466,共3页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
关键词
气门弹簧
夹杂物
疲劳断裂
valve spring
inclusion
fatigue fracture
