A dual transverse magnetic field magnetron microbeam plasma arc welding seam tracking method for ultra-thin-walled tube welding

Abstract

The invention proposes a double transverse magnetic field magnetron micro-beam plasma arc welding seam tracking method for ultra-thin-wall pipe welding, which can realize seam tracking for ultra-thin-wall pipe welding. The system used in the method mainly includes dual transverse magnetic field magnetron micro-beam plasma arc seam tracking sensors, data analysis module, tracking control module, and torch position adjustment module. This method adopts the self-designed "single scan five-way swing acquisition method" to scan and sample during the welding process. The scanning area can be approximately regarded as a semicircle with a diameter slightly wider than the weld seam. The sampling process is that the semicircular scanning area is random The welding torch moves together, and the welding seam is continuously scanned while the welding torch is welding, and the information collected by the Hall voltage sensor is transmitted to the data analysis module, and then according to the position of the point on the surface of the tube scanned by the semicircular scanning area and the arc The tracking principle of voltage one-to-one correspondence, after the data analysis module processes and converts the collected voltage signal, the position of the welding torch and the deviation information of the welding seam at that moment can be obtained, and then the tracking control module controls the welding torch adjustment module to adjust the position of the welding torch And the welding path is adjusted, so as to realize the real-time tracking of the weld seam. The invention applies the magnetic field technology to scanning sampling, improves the welding seam shape while improving the tracking precision, thus can obtain high-quality weld seam, thereby achieving the purpose of improving the performance of the ultra-thin-walled pipe.

Description

technical field [0001] The invention relates to a double transverse magnetic field magnetic control micro-beam plasma arc welding seam tracking method for ultra-thin-wall pipe welding. Background technique [0002] Ultra-thin-walled tubes refer to tubes with a diameter-to-wall thickness ratio of more than 100, which are widely used in many industrial sectors and can be used to manufacture metal hoses, bellows, torque tubes, heat exchanger tubes for heat exchangers, and instruments The resonant cylinder of the instrument is sometimes used to transport various corrosive media under high temperature and high pressure, complex vibration and alternating load. Ultra-wave wall pipes are divided into seamless pipes and seamed pipes. The former is processed by cold rolling, cold drawing and spinning, while the latter is made by rolling the strip into a round pipe and then welding. become. Because of the difference in production process, the performance of seamless pipe is better th...

AI Technical Summary

Problems solved by technology

[0007] To sum up, domestic and foreign scholars' research on the application of magnetic field technology to arc welding mainly focuses on the structure and properties of weld seam, the flow of molten pool metal and the influence of magnetic field on arc state, etc., and the application of magnetic field technology to improve the welding seam tracking method There are fewer studies, and there are no reports on the application of magnetic field technology to improve the seam tracking of ultra-thin-walled pipes to improve the performance of ultra-thin-walled pipes

Images