我厂生产的 QY-7液压汽车吊和 yZS-1振动压路机等机械,全部金属结构件和部份零部件,都是使用16锰或45号钢。在攻丝时由于操作不当或用力过猛,丝锥常断裂在孔内,有的部件螺纹深达60毫米,用一般方法不易取出,我们试用焊接法取出断裂丝锥,成功率达99%。 I plant production QY-7 hydraulic crane and yZS-1 vibratory roller and other machinery, all metal structures and some parts, are used 16 manganese or 45 steel. In the tapping due to improper operation or excessive force, the tap often rupture in the hole, and some parts of the thread as deep as 60 mm, the general method is not easy to remove, we try to remove the broken tap tap welding, the success rate of 99%.