Mróz Marek, Kucel Bartłomiej, Rąb Patryk, Olszewska Sylwia
Department of Foundry and Welding, Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszow, Poland.
MB Aerospace Rzeszow, ul. Przemysłowa 9b, 35-105 Rzeszow, Poland.
Materials (Basel). 2023 Jul 6;16(13):4854. doi: 10.3390/ma16134854.
This article presents the results of a study on the distribution of weld distortion in thin-walled components made of 17-4 PH steel, resulting from TIG (Tungsten Inert Gas) welding. Both manual and automatic welding processes were examined. Physical simulation of the automated welding process was conducted on a custom-built welding fixture. Analysis of weld distortion in thin-walled components made of 17-4 PH steel was based on the results of measurements of transverse shrinkage and displacement angle values. These measurements were taken on thin-walled parts before and after the welding process using a coordinate measuring machine (CMM). To determine the effect of manual and automated welding processes on the microstructure of the welded joint area, metallographic tests and hardness measurements were performed. The microstructure was analyzed using a scanning electron microscope (SEM). An analysis of the chemical composition of selected welded joint zones was also conducted. These tests were performed using an optical emission spectrometer (OES). According to the results, the use of automated welding and special fixtures for manufacturing thin-walled aircraft engine components made of 17-4 PH steel reduces the propensity of these components for distortion due to the effects of the thermal cycle of the welding process. This conclusion is supported by the results of the observation of the microstructure and analysis of the chemical composition of the various zones of the welded joint area.
本文介绍了一项关于17-4PH钢制成的薄壁部件在钨极惰性气体保护焊(TIG)过程中焊接变形分布的研究结果。研究考察了手工焊接和自动焊接工艺。在定制的焊接夹具上对自动焊接过程进行了物理模拟。对17-4PH钢制成的薄壁部件焊接变形的分析基于横向收缩和位移角值的测量结果。这些测量是在焊接前后使用坐标测量机(CMM)对薄壁部件进行的。为了确定手工焊接和自动焊接工艺对焊接接头区域微观结构的影响,进行了金相试验和硬度测量。使用扫描电子显微镜(SEM)对微观结构进行了分析。还对选定的焊接接头区域进行了化学成分分析。这些测试使用了光发射光谱仪(OES)。根据结果,对于由17-4PH钢制成的薄壁航空发动机部件,采用自动焊接和特殊夹具制造可降低这些部件因焊接过程热循环影响而产生变形的倾向。焊接接头区域各个区域的微观结构观察结果和化学成分分析结果支持了这一结论。