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我厂400公斤空气锤下砧座(ZG45铸钢),因使用多年发生断裂,其形状及断裂部位见图1。焊前准备将两件断裂的工件刨削成双U型坡口(图
I plant 400 kg air hammer under the anvil (ZG45 cast steel), due to the use of years of fracture, the shape and fracture site shown in Figure 1. Preparation before welding will be two pieces of the workpiece shaved into double U-groove (Figure