Within the scope of increase in cutting tools efficiency, a CW CO;! laser beam has been used for butt welding sintered tips containing cobalt and tungsten carbide to a medium carbon steel core. After optimization of the laser processing conditions, full penetrating, sound and homogeneous welds are observed. Hardness is found to be nearly constant across the entire weld bead cross-section. Micro...

The development of adaptive and intelligent clamping devices allows for the reduction rejects defects based on weld discontinuities in laser-beam welding. utilization fixture-integrated sensors actuators is a new approach, realizing that enable in-process data acquisition time-dependent adjustment process conditions workpiece position by means closed-loop control. present work focused sensor ac...

In the AiF-FOSTA research project P1020 [1], a new design model for welded joints was developed. this context, small scale test on flat tensile specimens designed, with help of which various influences strength and ductility welds were investigated. Furthermore, extensive tests carried out overlap joints, cruciform double fillet as well partially fully penetrated butt joints. This done to calib...

During contact flash welding of rails, the metal is heated and continuously cooled in zone thermal influence. Accelerated heating subsequent intensive cooling, implemented by pulsed flashing-off method, lead to formation quenching structures. Subsequently, during operation rails welded joint, this leads cracks brittle destruction. We have investigated possibilities using after avoid structures ...

This study investigates four different joints under fluctuating tension cycles in the low-cycle fatigue (LCF) regime. The selected material was S960 ultra-high-strength steel, manufactured via direct-quenching manufacturing route. Based on typical engineering solutions, following were chosen to be investigated experimental tests: metal active gas and laser welded butt joints, fillet-welded load...

The high strength carbon steels such as API X65 is widely used to build the pipelines. In this study, the corrosion behavior welds region of the gas pipeline was studied. For this purpose, Shield Metal Arc Welding (SMAW) was used to evaluate the proposed method. The welding processes were performed with E6010, E6013, and ER70S-6 electrodes as filler metal and welding carried out in 3 passes by ...

This paper focusses on effect of flat wire electrode gas metal arc welding (FW-GMAW) inline during the process to improve quality weld bead. Since perimeter has enlarged, turbulence molten droplet characteristics is altered due electromagnetic force. To bring out, butt joint are proven with use electrode. The experimental results indicated that, and their orientations significantly factors bead...