我厂A186型梳棉机因长期使用,其轴头12×50mm键槽磨损,影响正常使用。为此,我们利用石墨假键焊补工艺进行修复,取得较好效果,介绍如下: (1)预加工石墨假键一件,键宽尺寸比实际需要尺寸小0.5～0.8mm。 (2)将石墨假键正确定位在原键槽位置。 (3)在假键周围需要修复的部位用φ2.5mm焊条,小电流施焊, Our factory A186-card because of long-term use, its 12 × 50mm shaft head wear, affecting the normal use. To this end, we use graphite false repair welding process to achieve better results, described as follows: (1) pre-processed graphite leave a key, the key width size than the actual size of 0.5 ~ 0.8mm. (2) Correct positioning of graphite key in the original keyway position. (3) around the fake keys need to repair parts with φ2.5mm welding electrodes, welding current,