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si tong huan xiang fa xian dao fa tao guan qian feng lie lou de fang zhi
Author(s): 
Pages: 91-92
Year: Issue:  4
Journal: Welding Technology

Keyword:  火焰钎焊钎缝裂漏防止;
Abstract: <正>四通电磁换向阀的先导阀如图1所示,套管与小阀体的钎缝,毛细管与小阀体的钎缝,原有工艺分别由2道工序钎焊,前者采用高频感应加热钎焊,后者采用火焰加热钎焊。由于工艺流程优化,实施精益生产,需要将原有2道钎焊工序合并为一道工序,并采用火焰加热自动钎焊。项目实施过程,产品组装后,外漏检测工序,原有套管与小阀体钎缝泄漏率较高,且经常性出现泄漏异常,导致产品报
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