你好应该是这样 Blade of tongue car钩钩this article in accordance with welding technological requirements, development of a dedicated train electroslag welding blade of tongue钩钩automatic welding machine, to overcome traditional low efficiency of manual welding, supplies and labor-intensive, such as the shortcomings of The use of electroslag welding and on the mode of forced molding, solder surface after the S hook tongue surface accuracy can be achieved 25-50Rum, each repair time of 20 To tie in with the electroslag welding in this article leads to the design of a dedicated board and by the mode-conditioning in the design of a dedicated positioning positioning fixtures, the fixtures to adopt a position of a pin through manual adjustment mode and hook on the tongue surface S Office does not wear a close fitting pole position after the two-mode depends on the level of orientation , thereby greatly improving the precision