Topic
Butt welding
About: Butt welding is a research topic. Over the lifetime, 7153 publications have been published within this topic receiving 44467 citations.
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TL;DR: In this article, the strength of vibration-welded butt joints of polycarbonate-poly(butylene terephthalate) blends was analyzed at room temperature and at −29°C at strain rates of 0.25 × 10 −2 s −1 and 0.5 × 10−2 s−1, respectively.
22 citations
Journal Article•
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TL;DR: Each welding possibility must be considered on its merits and not crippled by attempts to improvise a solution from a standard machine not suited to the special requirements of the case.
Abstract: This paper is directed to engineers interested in the application of resistance welding to the industries. The discussion foreshadows some of the latest tendencies of development. It deals with some fundamentals of design though it is not written as a complete treatise on the subject, nor especially for those engaged in the designing of resistance welding machinery. Differentiation is made between the older form of resistance butt welding and the later method of flash butt welding. The probable action taking place in the flashing zone is discussed, along with the effect that increased potential across the weld has on this action. The main object in flash butt welder designing should be to combine the maximum degree of acceleration of the metals into the flashing zone with the proper and necessary e. m. f. A study of the power division of a typical butt welder shows that the efficiency may be as low as 7 per cent or lower, but that nevertheless it competes with other methods of welding when applied to problems of mass production. The effect of external resistance in a flash butt welding machine is to offset variations in die contact and variations in stock resistance, thus stabilizing the flow of current in the flashing zone. The power factor of welding machines is not regarded by the designers as a major element, since the time of application of the current is at most but a few seconds.
22 citations
TL;DR: In this paper, two data processing methods are conducted to derive fatigue crack growth parameters of 95% survival probability, and it turns out that the fatigue crack based on each specimen data is larger than that based on group method of data processing in terms of normal stress intensity range.
22 citations
Patent•
08 Apr 1987
TL;DR: In this paper, a method and an arrangement for process control in spot welding are described in which the mechanical and/or electrical process variables predetermined for the welding process are monitored during the welding and each change in the process variable within the welding operation can be readjusted via several manipulated variables.
Abstract: A method and an arrangement for process control in spot welding are described in which the mechanical and/or electrical process variables predetermined for the welding process are monitored during the welding and each change in the process variable within the welding operation can be readjusted via several manipulated variables. The welding process is subdivided into several areas for the control, an evaluation scheme being allocated to each of these areas. The curve behaviour for various materials and dimensions is determined on actual components and stored. Calibration of the welding machine is dispensed with.
22 citations
TL;DR: In this article, the residual stress induced in the surface of thin steel plates subjected to single pass butt welding was investigated experimentally and numerically, and the temperature history was analyzed.
Abstract: The present work investigates experimentally and numerically the residual stress induced in the surface of thin steel plates subjected to single pass butt welding. First, the temperature history is...
22 citations