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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Patent•
05 Dec 2014
TL;DR: In this article, a welding or cutting system is provided that uses welding cables between a wire feeder and a power supply for high-speed data communications between the wirefeeder and the power supply, which eliminates the need for voltage and current sense leads for communication arc voltages/currents detected at the welding operation.
Abstract: A welding or cutting system is provided that uses welding cables between a wire feeder and a power supply for high-speed data communications between the wire feeder and the power supply. A system designed as discussed herein eliminates the need for voltage and/or current sense leads for communication arc voltages/currents detected at the welding operation.
11 citations
TL;DR: In this paper, a visual sensor system for welding seam tracking the I-butt weld joints in GMA welding was constructed, which consists of a CCD camera, a diode laser with a cylindrical lens and a band-pass filter to overcome the degrading of image due to spatters and arc light.
Abstract: In this study, a visual sensor system for weld seam tracking the I-butt weld joints in GMA welding was constructed. The sensor system consists of a CCD camera, a diode laser with a cylindrical lens and a band-pass-filter to overcome the degrading of image due to spatters and arc light. In order to obtain the enhanced image, quantitative relationship between laser intensity and iris opening was investigated. Throughout the repeated experiments, the shutter speed was set at 1/1000 second for minimizing the effect of spatters on the image, and therefore the image without the spatter traces could be obtained. Region of interest was defined from the entire image and gray level of the searched laser stripe was compared to that of weld line. The differences between these gray levels lead to spot the position of weld joint using central difference method. The results showed that, as long as weld line is within ±15° from the longitudinal straight line, the system constructed in this study could track the weld line successfully. Since the processing time is no longer than 0.05 sec, it is expected that the developed method could be adopted to high speed welding such as laser welding.
11 citations
Patent•
27 Jun 2005TL;DR: In this paper, a welding torch is moved away from a base material by a robot manipulator while a welding wire is being fed/supplied to produce an initial arc with the welding wire separated from the base material.
Abstract: A conventional consumable electrode type welding method has required the reversed operation of a robot manipulator and therefore excessive response time and acceleration/deceleration time, and inability of the feed/ supply of a welding wire to catch up with the melting speed of a welding wire has caused a larger arc length and an instable arc. A welding torch (4) is moved away from a base material (7) by a robot manipulator (9) while a welding wire (1) is being fed/supplied to thereby produce an initial arc with the welding wire (1) separated from the base material (7), whereby it is possible to reduce wasteful time without requiring a reversed operation to shorten a tact time, and stabilize arc at the starting end of welding to effectively reduce a “jerky stop”.
11 citations
Patent•
20 Dec 1977
TL;DR: In this paper, chemical resistant steels for containers are butt welded by using an automatic welding process, where the electrode is oscillated over the whole width of the seam and is kept to a maximum thickness of 1 mm.
Abstract: Chemically resistant steels for containers are butt welded by using an automatic welding process. The electrode is oscillated over the whole width of the seam and is kept to a maximum thickness of 1 mm.
11 citations
Patent•
20 Oct 2010
TL;DR: In this paper, a soft belt type electromagnetic induction heater was used for butt welding in pipeline engineering, which relates to the technical field of pipeline systems and was characterized in that high-temperature-resistance insulation fiber was adopted to be covered outside a high-frequency soft cable and both ends of the heating soft belts were provided with purpose-made electric connectors.
Abstract: The invention provides a soft belt type electromagnetic induction heater used for butt welding in pipeline engineering, which relates to the technical field of pipeline systems. The soft belt type electromagnetic induction heater comprises an induction heating ring. The invention is characterized in that high-temperature-resistance insulation fiber (7) and high-temperature flame-retardant cloth (8) are adopted to be covered outside a high-frequency soft cable (5) to be made into heating soft belts (1) in different specifications according to different diameters of steel pipes, both ends of the heating soft belts (1) are provided with purpose-made electric connectors (2) so that the high-frequency soft cable (5) forms a spiral wire heating ring, and the output current of a middle-frequencypower supply is communicated with both ends of the spiral wire for heating pipe openings. The invention has the advantages that the installation/dismounting operation of the soft belt type electromagnetic induction heater on/from the steel pipes is convenient, the use is safe and reliable, the problem of the existing middle-frequency induction heating technology in the large-caliber long oil transmission gas pipeline welding preheating construction is solved, and the requirement of high-efficiency welding construction of the engineering is met.
11 citations