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近几年,由于现场安装的需要,同时为了节省人力、物力,许多大型工程,特别是桥梁工程。对许多板的对接焊缝、管对接焊缝以及全溶透的角焊缝都采用垫板,有的采用钢垫板,有的采用陶瓷垫板,条件较好的采用单面焊双面成型等焊接工艺。这样的焊接工艺的确大大的提高了工效,节省了大量资金。但是由于工件较大,不可避免地会产生局部错口,加之手工焊气割修整,机械、人为等原因,造成坡口边缘受损。焊接时,产生内坡口边缘咬口,造成焊渣聚集在工件根部与垫板之间,加
In recent years, due to the needs of on-site installation, in order to save manpower, material resources, many large-scale projects, especially bridge engineering. For many board butt welds, butt welds and fully permeable fillet welds are pad, some with steel pad, and some with ceramic pad, the better conditions using single-sided welding double-sided molding Other welding processes. This welding process does greatly improve the work efficiency, saving a lot of money. However, due to larger workpieces, local misalignment will inevitably occur. In addition, hand welding cutting, mechanical and man-made causes the edge of the groove to be damaged. Welding, the edge of the edge of the mouth to produce seizures, resulting in welding slag accumulation between the workpiece root and the pad, plus