CAJ | 학술논문

本文对重型卡车中使用的簧片螺母在装配过程中发生断裂事故进行了分析，结果表明，簧片螺母材质和硬度符合相关技术要求，金相组织为正常组织，引起断裂的主要原因为簧片螺母在酸洗或镀锌过程中产生吸氢，导致材料晶界脆化，在装配过程中受力发生脆性断裂。同时，分析了氢脆的原理，提出了避免氢脆事故出现的措施。
본문대중형잡차중사용적황편라모재장배과정중발생단렬사고진행료분석，결과표명，황편라모재질화경도부합상관기술요구，금상조직위정상조직，인기단렬적주요원인위황편라모재산세혹도자과정중산생흡경，도치재료정계취화，재장배과정중수력발생취성단렬。동시，분석료경취적원리，제출료피면경취사고출현적조시。
In this paper ,the fracture cause of the heavy truck reed nut, which is broken in the assembly is researched. The research shows that the material and the hardness of the reed nut meets the technical requirements and the microstructure is normal. The research also shows that the main cause of the reed nut fracture is hydrogen embrittlement caused when Pickling and galvanizing, which leads Intergranular embrittlement and Intergranular fracture when assembling. The mechanism of hydrogen embrittlement is also researched and the measures of preventing hydrogen embrittlement is put forward .