如图1所示深孔活塞杆是我厂矿用液压支架侧推千斤顶活塞杆的一种结构形式,加工完成后,右端上部工艺孔需用堵焊牢,焊接处经47MPa液压试验不允许泄漏。试验时在活塞杆左端接头处(图中未画出)通入47MPa液体检验焊缝质量,为了试验焊接处是否泄漏,需将f6孔处密封。原工艺方法是将f45 As shown in Figure 1, the deep-hole piston rod is a structural form of the side jack jack of the mine hydraulic support. After the processing is completed, the upper right-hand process hole needs to be plugged firmly and the welding place is not allowed to leak through the 47MPa hydraulic test. Test at the left end of the piston rod joints (not shown) 47MPa liquid access inspection of weld quality, in order to test the welding Department for leaks, f6 hole should be sealed. The original process is f45