中海拔地区钢轨焊接工艺及质量对比

摘要

以包钢U75V热处理钢轨焊接为对象,依据焊接接头型式检验结果,对比研究兰州铁路局中海拔地区基地闪光焊、现场移动式闪光焊、移动式气压焊及铝热焊接头性能.结果表明:基地焊接接头综合性生能最佳,现场移动式闪光焊和移动式气压焊接头综合性能相近,铝热焊接头性能最差.%The welding of U75V rail produced by Baotou Steel is taken as a object and according to the inspection results of the weld joint types,the properties of the welded joints of the flash-butt welding in plant,site mobile flash butt welding,mobile gas pressure welding and thermite welding in intermediate altitude areas managed by lanzhou railway bureau are compared and studied.The results show that the welded joints of flash butt welding in plant have the best combination property;the welded joints of site mobile flash butt welding have similar combination property with that of mobile gas pressure welding;the welded joints of thermite welding have the worst property.