CAJ | 학술논문

对某电梯锁紧用60Si2CrVA圆柱弹簧在安装调试过程中出现的失效断裂,结合弹簧制造的生产过程,采用原子吸收光谱、断口电镜扫描、金相检验等方法对失效断口进行了详细分析,发现可能导致该弹簧失效的几种缺陷:原材料化学成分不均匀、内部结构存在缩松、缩孔以及热处理工艺不当等,并分析这些缺陷对弹簧性能及弹簧失效造成的影响.
대모전제쇄긴용60Si2CrVA원주탄황재안장조시과정중출현적실효단렬,결합탄황제조적생산과정,채용원자흡수광보、단구전경소묘、금상검험등방법대실효단구진행료상세분석,발현가능도치해탄황실효적궤충결함:원재료화학성분불균균、내부결구존재축송、축공이급열처리공예불당등,병분석저사결함대탄황성능급탄황실효조성적영향.
During the trial assembly process, fracture failure occurs in the cylindrical spring which is made of 60Si2CiVA to lock the elevator. Considering the manufacture process of the spring, cause analysis is made by atomic absorption spectrometry, scanning electron microscopy and metallo-graphic examination. Several types of defects lead to the failure of spring are found such as the in-homogeneous chemical composition of raw materials, the shrinkage cavity and shrinkage, improper heat treatment process, etc. The effects of these defects on the fracture failure of the spring are also discussed.