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摘要：
To search the energy saving, environmental protection and excellent welding electrode to replace ThO2-tungsten electrode. The article study the effects of multivariate rare earth tungsten electrode, ThO2-tungsten electrode, CeO2-tungsten electrode according to tungsten inert gas (TIG) welding experiment and test the burning consumption indicates that the burning consumption of ThO2-tungsten electrode is the worst, the multivariate rare earth electrode is prior to the CeO2-tungsten electrode; the welding depth and width are related to the welding current and speed; the multivariate rare earth tungsten electrode is better than ThO2-tungsten electrode and CeO2-tungsten electrode, while CeO2-tungsten electrode is prior to ThO2-tungsten electrode; compared the microstructure, hardness, morphology of fracture and tensile test of CeO2-tungsten electrode and multivariate rare earth tungsten electrode welded joints shows that the multivariate rare earth tungsten electrode is better than ThO2-tungsten electrode and CeO2-tungsten electrode, which can replace ThO2-tungsten electrode and CeO2-tungsten electrode to weld aluminum alloy.
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