在分汽缸、集油站管汇等分流点上,短管焊法兰的工作量很大,需要一个一个地用角尺或水平尺找正,即使能使短管与法兰面垂直,也不能保证管子与法兰盘左右同心,而且效率低。现在向读者介绍一种胎具,如图所示。在弓背板上垂直焊一块角钢,大小根据管径而定,弓背距离大于法兰边宽即可。使要焊法兰短管紧贴角 In the diversion points such as the sub-cylinder and the oil-collecting station manifold, the work load of the short pipe welding flange is large, and it is necessary to correct the angle one by one with a square or a horizontal ruler. Even if the short pipe can be perpendicular to the flange surface, it cannot Ensure that the pipe is concentric with the flange and that it is inefficient. The reader is now introduced to a kind of applicator, as shown in the figure. A piece of angle steel is welded vertically on the back plate of the bow, and the size is determined according to the diameter of the pipe. The distance between the back and the back is greater than the width of the flange. Make the welded short pipe close to the corner