摘要
在某焊轨厂对75 kg/m钢轨进行焊接前,发现多支钢轨在轨底出现裂纹和掉块伤损。经对伤损钢轨取样进行研究分析,钢轨性能、冶金质量均符合相应技术标准要求。针对钢轨裂纹特征,采用某软件对钢轨焊接前堆垛中的受力状态进行分析。结果表明,钢轨出现轨底裂纹伤损的原因是:钢轨堆垛时未按要求放平,出现倾斜,造成一侧轨底角局部受力过大,从而产生裂纹伤损。
Cracks and off block damag The performance test, metallurgical quality e was detected on lots of 75 kg/m steel rails before is conformed to the technical specifications by the welding. sampling and analyze of damaged rail. Dedicating to the crack characteristics, certain software was used to analyze the strained condition of the steel rail stacking before welding. The analyzing shows the main reason cau- sing the crack is：the rails was not horizontally stacked as required and there was tilt of the rail stacking which caused the rail flange angle overstrained leading to the crack damage.
出处
《四川冶金》
CAS
2012年第3期28-32,共5页
Sichuan Metallurgy
关键词
钢轨
受力
伤损
steel rail, strains, damage
