由于钎焊与胀接是互相矛盾的丁艺，胀接需冷收缩而铺锡要热膨胀，往往先胀接好的管口一经加热就出现松动现象，造成漏锡及接头强度降低，有些接头根本达不到使用要求，后只得采取管口封死等措施，才能使用。采用钨极氩弧焊焊接紫铜与不锈钢(或碳钢)的管板接头，进行了系列的焊接工艺试验，探索出与之相适应的焊接材，其工艺性能、操作方便、焊接质量稳定等特点。该工艺打破了娄似接头采用传统的铺锡钎焊方法，降低了工艺程难度、制造成本，缩短了生产周期、提高焊接接头的强度。
          据了解，目前低温机械公司生产的冷却器，基本上每台都有出现此类情况，造成冷却效率下降。即使采用这样复杂的工艺，接头的强度也还是比较低，大约只能承受2.5MPA左右，而油泵的大供油压力为4.0MPA，这给装置的正常运行带来了隐患。后一点就是采用整体铺锡钎焊方式，产品外观质量较差。因此，就迫切的要求找到一种既能提高接头的焊缝强度，又简便易于实现，同时又能降低成本的焊接工艺方法。根据多收集资料、了解信息，从分析钢与紫铜的焊接性能入手笔，我们提出采用手工钨极氩弧焊工艺解决该接头强度及气密性的问题。
          管板钨极氩弧焊热裂纹强度-.实验的提出该试验主要是针对透平膨胀机供油装置上的冷却器紫铜--不锈钢(碳钢)管板接头在焊接中出现的问题而提出的。该类接头目前采用的是紫铜管与黄铜板材料，这样是为了便于采用锡钎焊：同时为了提高耐压值使用了胀接工艺，另外为了方便进行整体铺锡，还特意把黄铜板的管孔附近设计工艺槽。
          Due to expansion after soldering is contradictory to the DingYi, easily spread to shrink and cold, often first tin thermal expansion is heating up good tube is caused by leakage phenomenon of loose, fittings and tin, some joint strength at last, reach use requirement to take preventive measures, such as pipe mouth shut can ensure use. Adopts argon arc welding of tungsten steel and stainless steel (or copper tube plate joint), the series of welding process test, exploring the conesponding welding material, the performance good, convenient operation, stable welding quality, etc. This process is joint Lou broke traditional tin soldering shop, greatly reduce the cost of manufacture process, the difficulty, shorten the production cycle, and improve the welding joint intensity.
According to the current low mechanical company production cooler, basically each have appear such circumstance, cause cooling efficiency. Even so, the process of complex joint strength or lower, about 2.5 MPA can withstand oil, but the biggest oil pressure, which give for 4.0 MPA brought the normal operation of the device. Finally using integral shop is tin soldering, product appearance of poor quality. Therefore, it is urgent to find a requirement of the weld joints can improve the intensity, and simple easy to realize, also can reduce the cost of welding method. According to data collection, analysis and professional information from steel and copper welding performance, we propose a pen by gtaw solve this joint strength and tightness.
The tube plate hot tungsten argon arc welding cracks strength - this experiment test, is mainly directed against the turbine fuel expander device - stainless steel (cooler copper tube plate in welding joints) in the problem. This joint of copper and copper tube is yellow, and that is to facilitate the material by tin soldering: in order to improve the bulging pressure value using process, in order to facilitate integral shop tin, especially the yellow copper pipe hole nearby design technology.