不锈钢、紫铜等薄板的拼接,一般是在装有垫板的焊接夹具上采用自动钨极氩弧焊接进行的。焊接夹具上的垫板,过去采用整体固定式的,即整体垫板镶在夹具垫板槽内,垫板和垫板槽的位置是固定的。这种结构很难保证垫板和焊件背面贴紧,往往产生图1所示的间隙。焊接时,焊接受热变形,还会使间隙增大。 Stainless steel, copper and other sheet splicing, usually with the pad with a welding fixture using automatic TIG welding. Welding pads on the plate, the past used the whole fixed, that is, the overall plate set in the fixture pad slot, pad and pad slot position is fixed. This structure is difficult to ensure that the back plate and weldment close together, often produce the gap shown in Figure 1. Welding, welding heat distortion, but also make the gap increases.