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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01 Jan 200518 citations
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18 Apr 1978TL;DR: In this article, a rotatable multi-nozzle assembly with a radius of rotation corresponding to the inside diameter of the pipe is used for cooling a weld in steel pipe during butt welding.
Abstract: A method for cooling a weld in steel piping during butt welding with cooling of the inside comprises, after joining of pipe ends by a root pass on the inside, cooling the junction being welded by subsequent passes with injection of a liquid medium at room temperature from the center of the pipe against the surrounding wall, in a direction between radial and tangential directions relative to the inner pipe surface. An apparatus for practicing the cooling method comprises a rotatable multi-nozzle assembly having a radius of rotation corresponding to the inside diameter of the pipe and is capable of injecting the cooling medium against the inner surface of the pipe, a duct for conducting the cooling medium to the nozzles, and a pumping device for forcing the cooling medium under pressure into the nozzles.
18 citations
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27 Dec 2004
TL;DR: A wire feeding control mechanism and method to obtain a certain stick-out of welding wire from a tip of a welding gun is described in this paper, where the wire is fed through a wire feeder.
Abstract: A wire feeding control mechanism and method to obtain a certain stick-out of welding wire from a tip of a welding gun.
18 citations
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TL;DR: In this article, the authors used a bilinear degenerated shell element to model the thermal properties of cylindrical and spherical shapes in the case of butt welding of a thin cylinear pipe to a thin spherical pipe.
18 citations
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TL;DR: In this paper, the fatigue life of a welded joint was calculated based on numerical integration of simple Paris' law and a reliable solution of the stress intensity factor (SIF), where the initial crack length (ai) was assumed to be equal to 0.1mm in case of weld toe.
Abstract: The fatigue life of welded joint was calculated based on numerical integration of simple Paris’ law and a reliable solution of the stress intensity factor (SIF). The initial crack length (ai) was assumed to be equal to 0.1 mm in case of weld toe. This length was satisfactory for different butt joints geometries. The comparisons with the available data from standards and literature were demonstrated. It was shown numerically that the machining of weld reinforcements will increase the fatigue life. The increase of plate thickness decreases the fatigue strength (FAT) and the number of cycles to failure when using the proportional scaling of crack length. The validation processes of the current calculations have been shown. Therefore, it can be concluded that it will prevent the unnecessary waste of time consumed to carry out the experiments.
18 citations