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焊接性能是船用结构材料的关键性能指标,为了考查新型船用Ti-75合金的焊接性能,进行了系统的工艺与性能研究.焊接在自制NZA3—300型钨极脉冲TIG焊机上进行,样板采用14mm的Ti—75合金工业厚板.焊前准备、坡口加工、焊接环境、焊缝保护、焊接过程清理以及焊缝层间温度控制均按标准要求进行.为了保证焊接接头具有良好的塑性,采用专门为该合金设计加工的配套焊丝和5个9的高纯氩气
Welding performance is a key performance index of marine structural materials, in order to examine the welding performance of new marine Ti-75 alloy, the system process and performance studies were carried out on the homemade NZA3-300 TIG pulse TIG welding machine, the template used 14mm Ti-75 alloy industrial thick plate.Pre-weld preparation, beveling, welding environment, weld protection, welding process cleanup and weld layer temperature control are carried out according to standard requirements.In order to ensure that the weld has good plasticity, Adopt specially designed welding wire and 5 9 high-purity argon gas for this alloy