基于X射线高速摄像水下焊接熔滴过渡分析  

Analysis on metal transfer in underwater wet welding based on X-ray high-speed photography

作　　者：杜永鹏[1,2,3] 郭宁 冯吉才[1,2] 

机构地区：[1]哈尔滨工业大学先进焊接与连接国家重点实验室,哈尔滨150001 [2]哈尔滨工业大学(威海)山东省特种焊接技术重点实验室,威海264209 [3]山东省科学院海洋仪器仪表研究所,青岛266001

出　　处：《焊接学报》2017年第10期29-32,共4页Transactions of The China Welding Institution

基　　金：国家重点基础研究发展计划资助项目(973计划;2013CB035502)

摘　　要：水下湿法焊接技术是一种重要的水下施工工艺,研究水下湿法熔滴过渡过程,有助于深入分析焊接过程本质,制定焊接工艺,进而提高焊接质量.但由于焊接过程中存在气泡,难以借助传统研究手段研究水下焊接熔滴过渡过程.为克服这一不利影响,利用X射线不易发生反射、折射的特点,搭建试验系统,同步采集水下湿法焊接过程熔滴过渡图像与电信号并进行分析.结果表明,水下湿法药芯焊丝常见过渡形式有排斥过渡、固体短路过渡和表面张力过渡,其中排斥过渡和固体短路过渡对焊接过程稳定性影响较大,应加以抑制.Underwater wet welding is a widely used technology. To study the process of the transfer process of underwater wet welding can be helpful for the further analysis of the welding process and then improve the welding quality. In order to overcome this disadvantage,the experimental system was built by using X-ray which is not easy to reflect and refract. The image ofmetal transfer process and the synchronal electrical signal,which was collected from the underwater wet welding process was analyzed. The research results showed that the globular repelled transfer,short-circuit metal transfer and surface tension transfer were the main metal transfer modes during underwater welding.To obtain a stable welding process,the proportion of excessive repelled metal transfer and short-circuit transfer should be restricted.

关 键 词：水下湿法焊接 高速摄像 熔滴过渡 

分 类 号：TG456.5[金属学及工艺—焊接]