一、用附加螺栓法修复滑扣的内螺纹 发动机上某些零部件的螺纹孔滑扣后,如不允许用加大丝扣法修复,可采用附加螺栓法进行修理,其工艺如下: 1.将滑扣的螺纹孔钻掉,使孔径加大Φ4～Φ5毫米;然后测量底孔,攻丝扣。扩孔攻丝时,应注意螺孔的位置,不应钻穿水套,否则将影响强度,还会引起漏水。 First, with the additional bolt method to repair the internal thread of the slider Some parts of the threaded hole after the slider slip, if not allowed to increase the threaded method of repair can be used to repair the bolt method, the process is as follows: 1. Drill the threaded hole drilling slip off, so that the hole diameter Φ4 ~ Φ5 mm; then measure the bottom hole, tapping buckle. Tapping tapping, should pay attention to the location of the screw hole, should not drill through the water jacket, otherwise it will affect the strength, but also cause water leakage.