标准摘要
[中文适用范围]： 本文件规定了钢轨铝热焊接的要求，包括审批流程、实验室测试、焊工和承包商的批准以及轨道上铝热焊接的验收标准。本文件适用于相同型材和相同等级的43 kg/m至75 kg/m新轨的焊接。本文件仅限于用于连接钢轨端部的对接焊。注：符合本文件要求并不能保证焊接工艺适用于特定的轨道和交通条件。本文件不涵盖不同轨节、磨损程度不同的钢轨或不同等级钢轨之间的焊接。 [外文原描述]： This document specifies the requirements on rail aluminothermic welding, including the requirements for approval process, laboratory tests, approval of welder and contractor, as well as the acceptance criteria of aluminothermic welds in track. This document concerns the welding of 43 kg/m to 75 kg/m new vignole rails of the same profiles and the same grades. This document is restricted to butt welding for connecting rail ends. NOTE Conformity with the requirements of this document does not ensure the suitability of a welding process for specific conditions of track and traffic. This document does not cover welds made between different rail sections, differently worn rails or different rail grades.
英文名称Railway infrastructure — Rail welding — Part 2: Aluminothermic welding