This paper addresses intelligent techniques for the quality control of the pulsed gas tungsten arc welding process for butt joints, and it is a development to Ref. 1. Because there exist some important differences in butt joint welding and bead-on-plate welding, the modeling and control scheme in Ref. 1 does not completely fit for butt joint welding. In this paper, the differences between the t...

Background: AA2519-T87 is a new armour grade aluminium alloy employed in the fabrication of light combat military vehicles. Joining of this material using fusion welding processes, results in the formation of solidification defects like porosity, alloy segregation and hot cracking. In order to overcome the solidification related problems, solid state welding processes such as friction stir weld...

The Compact Muon Solenoid (CMS) is one of the general-purpose detectors to be provided for the LHC project at CERN. The design field of the CMS superconducting magnet is 4 T, the magnetic length is 12.5 m and the free bore is 6 m. In order to withstand the electro-mechanical forces during the operation of the CMS magnet, the superconducting cable embedded in a 99.998% pure aluminum matrix is re...

Abstract This work investigates the application of ultrasonic vibration to steel joints formed by gas metal arc welding. Welding is done using a active welding source with current 120–160 A, 0.8-mm-diameter wire and 10 L/min CO2 flow. The distance from torch horn 120 mm. Ultrasonic most affects weld when position mm increases penetration speed 190 (275) mm/min for 5-mm-thick (10-mm-thick) plate...

Aluminothermic rail welding was from the beginning a great success because its low price even in 1895 in Germany. This method is now, widely used all over the world for the railways construction, maintenance and modernization. Instructions give you guidelines for preparing papers for conferences or journals. After 1989, the welding needs of the potentials beneficiaries (Romanian Railways, Urban...

The study of the process laser welding various aluminum-steel joints is necessary to promote possibility realization new products and designs in instrumentation mechanical engineering. Laser welding, due its many advantages, considered a very promising joining different materials, although application industry still limited. Welding aluminum with steel using sources challenging task mainly form...

Fine-grained steels belonging to the HSLA group (High-Strength Low-Alloy steels) of are becoming increasingly popular and used in both statically dynamically stressed structures. Due method their production, thus also use obtain required mechanical properties, it is really necessary limit heat input values for these during welding. When applying temperature cycles, highly heated heat-affected z...

Introduction The Friction Stir Welding (FSW) process is an innovative technique to join metals in the plasticity field, thus not reaching the melting temperature and consequently the liquid state as it happen in traditional welding processes. This feature of the FSW proved an enhancement of the fatigue behaviour and strength of the joints, leading some companies to adopt the process for the man...

The various welding parameters such as welding speed, voltage and gas flow rate were varied on HSLA steel and the effects of these parameters on weld bead geometry such as penetration, width & height have been studied. Mathematical equations have been developed using factorial technique. And the result of various effects are shown in tables. (Numerical Values). INTRODUCTION Wide variety of stee...