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zhong zai tie lu gang gui shan guang han jie tou tui tu gen bu duan lie fen xi ji fang zhi fang fa
Author(s): 
Pages: 48-50
Year: Issue:  2
Journal: Welding Technology

Keyword:  钢轨闪光焊接头断裂;
Abstract: 重载铁路钢轨闪光焊接头推凸根部裂纹产生的主要原因是推凸根部与轨底构成V形缺口,在疲劳载荷作用下,形成裂纹源.轨底表面脱碳使得该区域强度下降,进一步促进了裂纹的萌生.防止裂纹的方法是将轨底的推凸余量打磨干净,消除推凸构成的缺口.
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