高锰钢是承受冲击和耐磨的良好材料,用它制成的整铸辙叉在各条铁路线上,已得到广泛的采用。但是在有的高锰钢辙叉的整铸件中还存在着气孔、夹渣、砂眼等缺陷,极易使辙叉出现纵、横裂纹;再则就是一般的正常磨耗。通常这两种情况都可以进行焊补修复后继续使用。但是,由于我们过去没有掌握高锰钢的特性和合理的焊补工艺,加之现有的耐磨堆焊焊条还不 High manganese steel is to withstand the impact and wear good material, with it made of cast frog in the various railway lines, has been widely used. But in some high-manganese steel frog castings there are still pores, slag, trachoma and other defects, easy to frog vertical and horizontal cracks; then it is normal normal wear. Usually, both of these cases can be repaired by welding and then continue to be used. However, since we have not mastered the characteristics of high manganese steel and reasonable welding repair process, in addition to the existing hardfacing electrode is not