摘要
针对超窄间隙TIG焊的焊接工艺要求,提出了一种基于实体建模和数值模拟仿真相结合的焊枪优化设计方法。首先,根据气体在管道中的流动特性,建立了适用于超窄间隙TIG焊的STN和HTN型枪嘴的理论模型和实体模型,并进行了数值仿真分析;然后采用自行研制的铜丝网气保护试验装置测定了这两种枪嘴在不同的气体流量范围下的实际气体保护效果。经试验测定结果与模拟仿真结果对比分析表明,所研制的STN型枪嘴可满足超窄间隙TIG焊气体保护效果的工艺要求。基于数值模拟优化设计的方法,既可降低其开发成本,又可缩短研发周期。
For the technical requirement of the ultra-narrow gap TIG welding,a method of optimization design is put forward based on numerical simulation and entity model.First,according to the gas flowing characteristics in pipeline,the theoretical model and entity model of STN and HTN for Ultra-Narrow gap TIG welding torch are established,and numerical simulation for them is carried out. Second,the two developed torches＂ gas protection was tested by the special copper wire nets in different gas flow range.The comparative analysis of the test ~sults and the numerical simulation results show,the STN can ensure the technical requirement of gas protection for ultra-narrow gap TIG welding.At the same time,the optimization design method not only can reduce its design cost, but also can make the design cycle shorten.
出处
《电焊机》
北大核心
2011年第9期61-64,共4页
Electric Welding Machine
基金
国家自然科学基金资助项目(50775105)
关键词
超窄间隙TIG焊
实体模型
数值模拟
优化设计
ultra-narrow gap TIG welding
entity model
numerical simulation
optimization design
