在焊补导轨拉伤方面,我们采用了阳极刻蚀法去油污、然后用银锡铋合金焊补导轨拉伤,效果良好,去油污迅速、简便、干净,焊补牢固。焊补导轨拉伤质量的好坏,关键在于导轨拉伤表面的油污是否清除干净和镀铜层牢不牢。采用一般的物理清洗方法,既费事又清理不干净,影响了焊补质量。我们采用阳极刻蚀、退钝化膜、镀铜、焊补等工艺,保证了焊接质量。现简要叙述如下: In the weld repair rail strain, we use the anode etching method to grease, and then use silver-tin-bismuth alloy welding rail strain, the effect is good, to oil quickly, easily, clean, welding firm. Welding repair rail quality is good or bad, the key is the rail surface strain of oil is clean and solid copper plating is not strong. The use of general physical cleaning methods, both clean and unclean, affecting the welding quality. We use anodic etching, depassivation film, copper, welding and other processes to ensure the welding quality. Now briefly described as follows: