有色金属压力容器非熔化极氩弧焊焊接工艺

摘要

在碳钢及低合金钢压力容器焊接工艺中，已广泛采用非熔化极(钨极)氩弧焊焊接方法。有色金属与碳钢及低合金钢相比，可焊性较差，焊接难度较大，所以有色金属非熔化极(钨极)氩弧焊焊接工艺还不够成熟。以有色金属(包括铝、铜、镁等及其合金)压力容器焊接为例，通过大量的工程实践证明，从焊接材料、焊接接头型式及尺寸、焊前准备、焊接过程等方面来研究非熔化极氩弧焊焊接工艺，可以使有色金属压力容器焊接接头的焊接质量达到标准要求。%In the process of carbon steel or low-alloy steel pressure vesselwelding, the argon-arc welding of non-melt pole( Tungsten pole) is widely used. Because thenon-ferrous metal is more difficult to be welded than carbon steel and low-alloy steel, this weldingtechnology of non-ferrous metals by non-melt pole ( Tungsten pole) argon-arc welding is not developed enough. Takingpressure vesselwelding made of non-ferrous metals ( like Aluminum,Copper,Magnesium and their alloys) for examples,the technologyhas been studied in the fel-low aspects of welding metals,the type and size of welding joint,welding preparation,welding process and so on. A large number of engineering practices show that the improved welding technology can make the quality of non-ferrous metal pressure vessel jointwelding reach the standard requirement.