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钽及其合金具育优良的耐腐蚀性,因而在化学工业中有着广泛的应用前途。诸如盘管、管线、阀等,都可用钽制造。钽的常温特别是高温机械性能也不错,特别适于作耐热部件。然而,钽极易氧化,造成了焊接上的极大困难,因而妨碍了它的实际应用。经过长期的研究,逐渐掌握了钽的焊接方法。对于厚度小于2毫米的钽零件,比较合适的方法是不加填充丝的钨极椭性气体保护焊。相对于厚度为0.5、1.0、1.5、2.0和2.5毫米厚的钽焊件,合适的焊接规范分别为:焊接速度42、38、254、27和24厘米/
Tantalum and its alloys have excellent corrosion resistance and therefore have a wide range of applications in the chemical industry. Such as coil, pipelines, valves, etc., can be made of tantalum. Tantalum at room temperature especially high temperature mechanical properties are not bad, especially suitable for heat-resistant components. However, tantalum is extremely susceptible to oxidation and poses tremendous difficulties in welding, hampering its practical application. After a long period of research, gradually mastered the welding method of tantalum. For less than 2 mm in thickness of the tantalum parts, the more appropriate method is not filled with tungsten arc Ellipse gas shielded welding. Suitable welding specifications for tantalum weldments 0.5, 1.0, 1.5, 2.0 and 2.5 mm thick, respectively, are: welding speeds 42, 38, 254, 27 and 24 cm /