石化炉管的焊接
Welding of Petro-chemical Furnace Tube
孙明慧1, 梁文武1, 孙立平2
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作者单位:(1.中山职业技术学院 机械工程系,广东 中山 528403;2. 珠海贝斯特医疗仪器有限公司,广东 珠海 519000)
中文关键字:炉管; 高温合金; 电弧焊; 显微组织
英文关键字:furnace tube; high temperature alloy; electric arc welding; microstructure
中文摘要:分析了HP45NbTi高温耐热合金的焊接性,采用手工钨极氩弧焊,用镍基焊丝打底、25-35Nb焊丝填充并盖面的焊接工艺,对该合金炉管进行对接焊,获得了其常温和高温下都满足使用要求的焊接接头,并对焊接接头的显微组织进行了观察分析。
英文摘要: The weldability of heat-resistant alloy HP45NbTi was investigated. The root passes were welded by manual TIG with nickel based wire, filling with wire 25-35Nb. The mechanical properties of the welded joint were examined and up to the standard. The microstructure of the welded joint was also observed before and after welding.