In a factory, a fracture occurred in a transition rail of the 60kg/m to 50kg/m in the correction.Macro and microstructure inspections and compostion analysis of the fracture rail showed that surface layer of the rail waist there is primitive small cracks, it was grown by the 3-point curve correction lead to the rail fracture. The reason of the primitive small cracks is too high heating temperature and cause the serface layer of the rail waist result from grain bounderies oxidation, and by forging and pressing lead to crack in the position that was oxidized.
引用该论文:DENG Jian-hui,DENG Yong,WU Xiong-xian. FRACTURE ANALYSE OF THE RAIL IN THE CORRECTION[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2006, 42(9): 479~481 糖心产精国品免费入口*完整版,糖心产精国品免费入口*完整版,糖心产精国品免费入口*完整版. 异型糖心产精国品免费入口*完整版矫直断裂原因分析[J]. 理化检验-物理分册, 2006, 42(9): 479~481