基于数值模拟分析的合金焊接工艺优化试验

Optimization test of alloy welding process based on numerical simulation analysis

针对高温合金薄壁机匣焊接加工效率低、成本高的问题,以2条环形焊缝的GH3536材料为研究对象,提出一种基于数值模拟分析的合金焊接工艺优化方案。通过数值模拟可知,电子束焊接变形量为2.5 mm,自动氩弧焊接的变形量为1.7 mm,故采用自动氩弧焊接作为高温合金薄壁机匣焊接加工工艺方案,并将其应用于实际高温合金薄壁机匣焊接加工中。结果表明,优化后的自动氩弧焊接加工工艺的检测时间、总加工时间和空程时间更短,分别缩短了28、230、255 min。焊接一次合格率由69%提高到93%,可实现高效、低成本的高温合金薄壁机匣焊接加工。

Aiming at the problems of low efficiency and high cost of welding processing of thin-walled superalloy casing,taking GH3536 material with two circumferential welds as the research object,two optimization schemes of casing welding processing technology of electron beam welding and automatic argon arc welding are proposed.The numerical simulation results show that the deformation of electron beam welding is 2.5 mm and that of automatic argon arc welding is 1.7 mm.Therefore,automatic argon arc welding is adopted as the welding process scheme of Superalloy thin-walled gearbox,and it is applied to the actual welding process of Superalloy thin-walled gearbox.The results show that compared with the traditional welding process of Superalloy thin-walled casing,the optimized automatic argon arc welding process has shorter detection time,total processing time and empty travel time,which are shortened by 28 min,230 min and 255 min respectively,10 min,221 min and 51 min respectively.The first pass rate of welding is increased from 69%to 93%.The processing cost of each superalloy thin-walled casing is about 1050 yuan,which can achieve high efficiency and Low cost welding processing of high temperature alloy thin wall gearbox.