Deep penetration TIG welding perforation state detection device and detection method thereof

Abstract

The embodiment of the invention provides a deep penetration TIG welding perforation state detection device and a detection method thereof. The detection device comprises a photosensitive system used for detecting the characteristic spectral radiation intensity of metal plasmas on the outer side of the edge of the front face of an electric arc during deep penetration TIG welding, a measuring and analyzing system used for converting the characteristic spectral radiation intensity signal of the metal plasmas into a voltage signal and measuring and analyzing the voltage signal so as to judge the perforation state of the deep penetration TIG welding, and a digital display and alarm system used for displaying the voltage values of the penetration and non-penetration states of the deep penetration TIG welding and giving an alarm in the non-penetration state. The device is constructed according to a plasma radiation theory; the front arc during the deep penetration TIG welding is detected by adopting a front detection method, operability is good, implementation is convenient, the perforation or non-perforation state of the deep penetration TIG welding can be accurately identified, detection accuracy is high, stability is good, real-time detection and alarm can be realized, and welding quality is ensured.

Description

technical field [0001] The invention relates to a deep penetration TIG welding perforation state detection device and a detection method thereof, belonging to the technical field of welding equipment production and manufacturing. Background technique [0002] Deep penetration TIG welding is a non-melting electrode gas shielded welding with high penetration. [0003] Compared with traditional TIG welding, deep penetration TIG welding adopts larger welding current (general welding current is 300-1000A) and more efficient water-cooled tungsten electrode, so as to generate arc with more concentrated energy and higher arc pressure, thus Realize the keyhole welding of medium and thick plates. Without opening the groove, deep penetration TIG welding can penetrate ferrous metals and non-ferrous metals with a thickness of 3-16mm at one time. [0004] Due to high welding efficiency and good welding quality, deep penetration TIG welding has been more and more widely used in pressure v...

AI Technical Summary

Problems solved by technology

The backside detection method needs to install equipment and instruments such as cameras, light intensity sensors, and voltage sensors on the backside of the workpiece. It is quite difficult to detect complex components with limited space or difficult to accommodate many instruments and equipment. Therefore, the backside detection method is subject to certain conditions

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