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高性能燃料元件研究项目组设计的堆内试验组件的焊接部件主要包括:1mm厚的不锈钢燃料包壳管和压力包壳管（合称为双包壳管）、端塞及压力传感器等。焊接设计要求达到以下标准:熔深1mm;焊缝变形量小于0.1mm的双包壳管间隙;焊缝氦漏率小于10-5Pa·m3/s:需要通过按1级焊缝标准要求的X光无损检测。根据任务要求,我们将高性能燃料元件堆内试验组件的焊接分为元件本身结构的焊接和堆内试验测试系统与元件结构的焊接两个部分。 元件本身构件的焊接主要是指元件的双包壳薄壁管与端塞的焊接和端塞的充压堵孔焊。这部
High-performance fuel element research project team designed to test the heap components of the welding components include: 1mm thick stainless steel fuel cladding and pressure cladding (collectively referred to as double-clad tube), end plugs and pressure sensors. Welding design requirements meet the following criteria: penetration 1mm; weld deformation less than 0.1mm double-clad shell gap; weld helium leak rate of less than 10-5Pa · m3 / s: need to pass by a weld standard requirements X Optical non-destructive testing. According to the mission requirements, we divide the welding of the high-performance fuel cell stack test components into the soldering of the components themselves and the welding of the in-stack test system and component structure. The welding of components itself refers to the welding of double-clad thin-walled tubes and end plugs and the pressure plugging welding of end plugs. This part