熔池自由表面形貌测量的研究现状及展望  

Current status and prospect of researches on measuring free surface morphology of weld pool

作　　者：张刚[1] 石玗[1] 李春凯[1] 黄健康[1] 樊丁[1] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,甘肃兰州730050

出　　处：《电焊机》2014年第10期1-6,共6页Electric Welding Machine

基　　金：国家自然科学基金(51165023);国家自然科学基金(51205179);甘肃省自然科学基金资助项目(10-10RJZA044);兰州理工大学红柳青年教师培养计划项目(Q200901);陇原青年创新人才扶持计划;甘肃省高校基本科研业务费专项项目

摘　　要：熔池自由表面形貌承载着与焊接质量相关的很多信息,其动态变化反映焊接过程的稳定性、焊接熔透状态等。测量熔池自由表面形貌对研究焊接热物理过程,建立复杂焊接过程数学模型,实现熔透控制及发展智能化焊接具有十分重要的理论意义和实用价值。但因熔池自由表面的动态快速变化,类镜面反射以及强弧光干扰使基于视觉传感测量获得的熔池自由表面形貌误差较大,因此详细阐述了国内外熔池自由表面形貌的二维和三维测量方法原理,深入分析各种测量方法的优缺点,展望熔池自由表面测量发展方向,进一步指出熔池自由表面测量的可视化为研究熔池动态行为提供了一种新途径。There are lots of useful information in free surface morphology of weld pool,which can reflect stability of welding process, weld penetration and so on.Measuring the free surface morphology of weld pool has very. important theoretical significance and practical value for buihting mathematical model of completed wehting process to study on welding heat physical process,realizing welding penetration control and developing automatic welding.However,it is very. hard to monitor the variation of weh：t pool surtace in real-time due to dynamically rapid variation,specular reflection of weld pool and strong arc light influence.The 2-D and 3-D measuring methods of weht pool surface are described in detail in this paper,the advantages and disadvantages of various measuring methods are analyzed further.The developing direction of measurement of weld pool free surface is prospected, but also the dynamic visualization of measurement is put forward for studying on the dynanlic behavior of weld pool.

关 键 词：熔池 自由表面 三维测量 熔透控制 

分 类 号：TG409[金属学及工艺—焊接]