Welding is an area in which technological developments out match the developments in its science base, which is primarily driven by the phenomenal industrial demand for welded structure. Reliability, Reproducibility and Viability requirements are forcing Technologists to look at weld defects such as distortion, hot cracking, in a systematic and logical approach than on adhoc basis. Distortion i...

O. Chivu, Engineering and Tehnological Systems Management Faculty, Polytehnic University of Bucharest, Romania The metallic structures realized from OL 52.4k have a very wide use, but they are used especially in case of tools used in mining plants. Due to the important constraints these welded structures are submitted into practice, it is very important to determine a set of optimal parameters ...

This paper presents a study on optimization of process parameters using particle swarm optimization to minimize angular distortion in 202 grade stainless steel gas tungsten arc welded plates. Angular distortion is a major problem and most pronounced among different types of distortion in butt welded plates. The process control parameters chosen for the study are welding gun angle, welding speed...

The present paper aims to study the behavior of tailor welded blanks subjected a single point incremental forming (SPIF) process from an experimental view. This was chosen deform truncated cone shapes AA1050 aluminum alloy with different thicknesses. A uniaxial tensile test performed determine mechanical characteristics alloy. Initial tests implicated use variable wall angle parts which were pr...

Friction stir welding is a solid state joining process. High strength aluminum alloys are widely used in aircraft and marine industries. Generally, the mechanical properties of fusion welded aluminum joints are poor. As friction stir welding occurs in solid state, no solidification structures are created thereby eliminating the brittle and eutectic phases common in fusion welding of high streng...

The present study presents the influence of welding current, welding voltage, welding speed and external magnetic field on hardness of shielded metal arc welded mild steel joints. Mild steel plates of 6 mm thickness were used as the base material for preparing single pass butt welded joints. Speed of welding was provided by cross slide of a lathe machine, external magnetic field was obtained by...

This work demonstrates applicability of electron beam welding (EBW) and laser (LBW) techniques for manufacture tailored welded blanks (TWBs) from Al-5251 (H22) Al-6082 (T6) sheets. A combination dissimilar sheets as well thicknesses (1.5 mm 2.5 mm) has been used in addition to a similar combination. An optimal post-weld heat treatment (PWHT) was determined that effective relieving stresses impa...

Submerged arc welding process is usually employed for welding of thick workpieces. Quality of submerged arc welded components depends on various factors. Selection of appropriate process parameters for joining metallic components is needed to obtain sound weldment. Many researchers carried out investigations to find out appropriate process conditions to obtain quality submerged arc welded compo...

A flexible manufacturing cell for the autonomous welding of large steel structures was developed in the European Commission’s Fifth Framework Programme “Growth”. The system consists of a mobile robot platform (robot transport vehicle or RTV), which carries all components for autonomous welding and the key technology of optical 3-D metrology, which determines the location of the robot platform a...