【摘要】 低碳钢渗铝管焊接，可用Ａ３１２焊条施焊，焊缝金属的耐蚀性和耐热性优于渗铝钢，但焊缝区熔合线则无法恢复渗铝钢性能。介绍了两种解决此难题的焊接工艺方法：堆焊和纤焊。堆焊法是利用堆焊过渡层，把渗铝钢的焊接变成不锈钢的焊接。钎焊法是破坏渗铝层后，利用焊接余热，把具有特殊性能的钎焊剂重新渗粘到焊区的熔合线上。更多还原

【Abstract】 Low carbon Al impregnation pipe can be welded with A312 electrode, and its anti-corrosion and anti-heat of the weld metal is superior to Al impregnation steel, however, the weld bond of welding seam area can not recover the properties of Al impregnation steel. The article introduces two welding procedure methods -- bead welding and solder welding, which can solve this difficult problem. The bead welding method changes the welding of Al impregnation steel into the welding of stainless steel by using bead welding transitional layer. Solder welding is to reapply the soldering flux with special properties on the weld bond of welding area with the welding residual heat after destroying the Al impregnation layers.更多还原