Lacki Piotr, Adamus Janina, Więckowski Wojciech, Motyka Maciej
Faculty of Civil Engineering, Częstochowa University of Technology, J.H. Dąbrowskiego 69 Str., 42-201 Częstochowa, Poland.
Faculty of Mechanical Engineering and Computer Science, Częstochowa University of Technology, J.H. Dąbrowskiego 69 Str., 42-201 Częstochowa, Poland.
Materials (Basel). 2023 Jul 3;16(13):4787. doi: 10.3390/ma16134787.
The article presents an original approach to determining the basic parameters of rotational friction welding (RFW) based on the analysis of friction heat transfer at the faying surfaces. Dissimilar Ti Grade 2/AA 5005 joints were used to demonstrate the method. The work established that for the analyzed joint, the optimum temperature at the faying surface that allow for a good quality weld to be obtained should be ~505 °C. On this basis, a map of optimal parameters was developed to achieve this temperature. This approach could potentially allow for more precise control of the welding process, leading to better joint quality and performance. The paper includes both a description of the technological process of friction welding and an attempt to explain the mechanism of the phenomena occurring in the welding area. The numerical calculations presented in the article were carried out using the ADINA System v. 9.8.2, which allows for the consideration of heat friction in the axial symmetric thermo-mechanical model. Frictional resistance was determined by the temperature-dependent friction coefficient. The assumed thermo-mechanical model required the determination of elastic-plastic properties versus temperature for the analyzed materials. The simulations of the friction welding were carried out for the different welding parameters and time. The different variants of friction welding were modelled.
本文提出了一种基于对摩擦表面摩擦热传递分析来确定旋转摩擦焊（RFW）基本参数的原创方法。采用不同的钛2级/AA 5005接头来演示该方法。研究确定，对于所分析的接头，为获得高质量焊缝，摩擦表面的最佳温度应为约505℃。在此基础上，绘制了实现该温度的最佳参数图。这种方法有可能实现对焊接过程更精确的控制，从而提高接头质量和性能。本文既描述了摩擦焊接的工艺流程，又试图解释焊接区域发生的现象的机理。文中给出的数值计算是使用ADINA System v. 9.8.2进行的，该软件允许在轴对称热机械模型中考虑热摩擦。摩擦阻力由与温度相关的摩擦系数确定。假定的热机械模型需要确定所分析材料的弹塑性性能随温度的变化。针对不同的焊接参数和时间进行了摩擦焊接模拟。对摩擦焊接的不同变体进行了建模。
