Experimental investigation of the influence of the FSW plunge processing parameters on the maximum generated force and torque

Abstract

The paper presents the results of an experimental investigation, done on the friction stir welding (FSW) plunging stage. Previous research works showed that the axial force and torque generated during this stage were characteristic for a static qualification of a FSW machine. Therefore, the investigation objectives are to better understand the relation between the processing parameters and the forces and torque generated. One of the goals is to find a way to reduce the maximum axial force and torque occurring at the end of the plunging stage in order to allow the use of a flexible FSW machine. Thus, the influence of the main plunge processing parameters on the maximum axial force and torque are analysed. In fact, forces and torque responses can be influenced by the processing parameter. At the end, a diagram presenting the maximum axial force and torque according to the processing parameters is presented. It is an interesting way to present the experimental results. This kind of representation can be useful for the processing parameters choice. They can be chosen according to the force and torque responses and consequently to the FSW machine capacities.

Investigation on lap-joint friction stir welding between AA6351 alloys and DP800 steel sheets

“…Measurement of temperature and thermal cycle is worthwhile to describe the formation of intermetallics, as the formation of intermetallics is a diffusion-controlled phenomenon [10,15,18]. During FSW, heat is generated due to the friction between the shoulder and workpiece, and it completely depends on the combination of parameters, i.e., rotational speed and travel speed with respective peak temperature [23,24]. It clearly indicates that at a constant travel speed, with increasing rotation speed, due to the higher friction between the shoulder and workpiece, more heat is generated at higher rotation speed (figure 4a and b).…”

Evolución Microestructural en Uniones de la Aleación Ti-6Al-4V Mediante el Proceso de Soldadura de Punto por Fricción-agitación

“…El proceso de soldadura por fricción-agitación es un proceso en estado sólido [8][9][10][11][12][13], aplicado con gran éxito en aleaciones de Al, Mg, Cu, Fe y Ti [14]. La soldadura de punto por fricción-agitación (FSSW) es una variación de la soldadura FSW.…”

Experimental external force estimation using a non-linear observer for 6 axes flexible-joint industrial manipulators

“…Moreover, in industrial production, it is very difficult to change the mechanical elements or the inner robot control system. This study concerns an industrial manipulator KUKA KR500 MT-2, which has a payload of 500 kg and can be used for a FSW process [1], [2] where a very significant interaction force is required. Up to now, this process is usually carried out by some specially developed machines, having strongly rigid axes but more expensive.…”