Research on overall solution of precision thin-walled parts valve brazing

精密薄壁件——气门嘴焊接整体解决方案研究 Research on overall solution of precision thin-walled parts valve brazing 黄世盛 HUANG Shisheng 1 2 first-author 唐卫岗 TANG Weigang 1 2 王思鸿 WANG Sihong 1 2 罗良良 LUO Liangliang 1 2 李江 LI Jiang 1 2 常宏 CHANG Hong 3 浙江省华光新型绿色钎焊材料重点企业研究院 浙江省华光新型绿色钎焊材料重点企业研究院 Zhejiang Huaguang New Green Brazing Materials Key Enterprise Research Institute Zhejiang Huaguang New Green Brazing Materials Key Enterprise Research Institute 杭州华光焊接新材料股份有限公司 杭州华光焊接新材料股份有限公司 Hangzhou Huaguang Advanced Brazing Materials Co.,Ltd. Hangzhou Huaguang Advanced Brazing Materials Co.,Ltd. 西安交通大学自动化科学与工程学院 西安交通大学自动化科学与工程学院 School of Automation Science and Engineering,Xi’an Jiaotong University School of Automation Science and Engineering,Xi’an Jiaotong University 针对气门嘴新结构的焊接难题,开发了一套用于精密薄壁件气门嘴的焊接整体解决方案。方案内容包括:针对螺杆和帽盖焊件的钎焊连接工艺性及可靠性要求,研发复合型药皮钎焊材料;针对母材熔点低、容易烧损等特点,设计并制造了自动高频焊接设备及异形感应线圈;对焊接电流、焊接时间、焊接位置等焊接参数进行试验,探索出一套成熟的自动高频焊工艺。该焊接整体解决方案具有高效、低成本、绿色化等优点,成功解决了气门嘴组件的嘴体螺杆与传感器底座的自动化焊接技术难题,并通过焊后的拉力测试及气密性检验,满足焊接质量需求,提高了生产效率及成品合格率,目前该方案已应用于实际生产。 Aiming at the brazing problem of the new valve structure, a set of brazing solutions for the valve of precision thinwalled parts has been developed. The project content includes the research and development of composite coating brazing filler materials for the process and reliability requirements of the brazing connection of the screw and cap weldment; the design and manufacture of the automatic high frequency brazing equipment and induction coil for the base material with low melting point and easy to burn; the brazing parameters such as brazing current,brazing time, brazing position are adjusted, and a set of mature automatic high-frequency brazing process are explored. The overall brazing solution has the advantages of high efficiency, low cost and greenness, and successfully solves the technical problems of automatic brazing for the screw of the valve nozzle assembly and the base of the sensor, and passes the tensile test and air tight test after brazing, meeting the brazing quality demands and improving the production efficiency and the qualified rate of the finished product. At present, this project has been applied in practical production. 精密薄壁件 气门嘴 高频感应焊 钎焊材料 钎焊工艺 precision thin-walled parts valve high frequency induction brazing brazing material brazing process U466;TG454 2022-03-08 10 51