Showing papers in "Welding International in 1989"
24 citations
TL;DR: In this article, an ultrasonic welding of non-ferrous metals is described. But this work is limited to nonferrous metal and does not consider non-orthogonal metal.
Abstract: (1989). Ultrasonic welding of non-ferrous metals. Welding International: Vol. 3, No. 10, pp. 853-860.
16 citations
10 citations
TL;DR: In this paper, the residual stress measurement on plasma sprayed coatings was studied. But the authors focused on the residual strength of the coatings and did not consider the residual properties of the coating.
Abstract: (1989). Residual stress measurement on plasma sprayed coatings. Welding International: Vol. 3, No. 11, pp. 947-953.
8 citations
8 citations
TL;DR: In this paper, Magnetically impelled arc butt welding of aluminium pipes is described and compared to the traditional arc-butt welding of aluminum pipes. But the welding process is different.
Abstract: (1989). Magnetically impelled arc butt welding of aluminium pipes. Welding International: Vol. 3, No. 11, pp. 941-946.
8 citations
7 citations
TL;DR: In this article, the fundamental arc characteristics of La-, Y- and Ce-oxide tungsten electrodes were investigated and a detailed analysis of the arc properties of these electrodes was presented.
Abstract: (1989). Fundamental arc characteristics of La-, Y- and Ce-oxide tungsten electrodes. Welding International: Vol. 3, No. 6, pp. 497-502.
7 citations
6 citations
TL;DR: In this paper, the authors investigate and quality control of resistance spot welding, and propose a method to improve the quality of the welding process, which is based on an investigation and verification process.
Abstract: (1989). Investigation and quality control of resistance spot welding. Welding International: Vol. 3, No. 12, pp. 1040-1045.
5 citations
TL;DR: In this article, a CO2 welding of galvanized steel is described. But the welding process is different from ours, and it is not suitable for welding with CO2-coated steel.
Abstract: (1990). CO2 welding of galvanized steel. Welding International: Vol. 4, No. 2, pp. 123-127.
TL;DR: In this paper, the effect of the composition of flux and welding wire on the properties of deposited metal of the 05N4MYu type was investigated. But the results were limited to a single metal type.
Abstract: (1989). Effect of the composition of flux and welding wire on the properties of deposited metal of 05N4MYu type. Welding International: Vol. 3, No. 2, pp. 109-111.
TL;DR: In this article, an ultrasonic examination of resistance spot welds in thin sheet steel using a focusing probe was performed using the focusing probe focusing probe (Focusing Probe focusing probe).
Abstract: (1989) Ultrasonic examination of resistance spot welds in thin sheet steel using a focusing probe Welding International: Vol 3, No 8, pp 678-683
TL;DR: In this paper, a new submerged-arc narrow gap welding system with two tandem wires is described, which has a simple design of the head ensuring excellent operating reliability, while the tandem technique improves both the productivity of the system and the metallurgical quality of the joints.
Abstract: Heavy gauge steels can be welded by conventional methods or by special ‘narrow gap’ welding techniques, used particularly in the primary circuits of PWR nuclear power stations. The advantages of narrow gap welding lie not only in terms of cost, but also in considerations of a metallurgical and mechanical nature, while the drawbacks are all related to the operational difficulties of obtaining good fusion on the sides of the groove. After looking at the characteristics of various welding processes and techniques, a description is given of a new submerged-arc narrow gap welding system, having a fixed head with two tandem wires. The simple design of the head ensures excellent operating reliability, while the tandem technique improves both the productivity of the system and the metallurgical quality of the joints. Finally, an orbital TIG narrow gap welding process is illustrated, designed for the site welding of heavy gauge pipes in nuclear power stations.
TL;DR: In this article, a simultaneous control system of penetration depth and bead height despite the variation of root gap in gas metal arc welding with X-groove is described, where root gap width is detected by image processing with CCD (charge coupled device) camera, and welding current and welding speed are controlled in order to keep constant penetration depth.
Abstract: One of the important subject in the study of automatic arc welding is to establish control system of welding parameters for controlling bead shape, namely penetration depth, bead width and bead height, by detecting or predicting behavior of molten pool owing to change of groove shape.This report describes the study of simultaneous control system of penetration depth and bead height despite the variation of root gap in gas metal arc welding with X-groove. In this system, root gap width is detected by image processing with CCD (charge coupled device) camera, and welding current and welding speed are controlled in order to keep constant penetration depth and bead height. Furthermore in this system, wire feeding rate and terminal voltage are controlled by using equations proposed by Lesnewich and Halmφy so that both wire extension length and arc length can be kept constant during torch height control with ACC method. This control of both wire extension length and arc length is very efective to maintain stabilized welding arc.From the result of an experiment with X-groove of SUS304 stainless steel, both penetration depth and bead height can be simultaneously controlled to be almost constant despite the variation from 0 to 3 mm of root gap width.
TL;DR: In this paper, the effect of external loading on the relaxation of residual welding stresses was investigated and the results showed that external loading has a significant impact on the residual welding relaxation of welding stresses.
Abstract: (1989). Calculation of the effect of external loading on the relaxation of residual welding stresses. Welding International: Vol. 3, No. 1, pp. 22-24.
TL;DR: A surfacing alloy for hardening components of 110G13L steel and wear mechanism of the alloy was proposed in this article, where the wear mechanism was shown to be independent of the material type.
Abstract: (1989). A surfacing alloy for hardening components of 110G13L steel and wear mechanism of the alloy. Welding International: Vol. 3, No. 1, pp. 58-60.
TL;DR: In this paper, the efficiency of electrodes made of tungsten doped with lanthanum was evaluated and compared with those made of metal dioxide and graphite, and the results showed that the latter was more efficient than the former.
Abstract: (1989). Evaluation of the efficiency of electrodes made of tungsten doped with lanthanum. Welding International: Vol. 3, No. 2, pp. 102-104.
TL;DR: In this article, the relationship between spatter and welding conditions was investigated in CO2 gas-shielded arc welding and spatter reduction was shown to reduce the spatter in arc welding.
Abstract: (1989). Reducing spatter in CO2 gas-shielded arc welding (2) — relationship between spatter and welding conditions. Welding International: Vol. 3, No. 6, pp. 503-508.