Friction welding control and quality evaluation method based on weld temperature and spatter detection

Abstract

The invention provides a friction welding control and quality evaluation method based on weld seam temperature and spatter detection, including a, equipment installation; b, starting the friction welding process; c, welding process quality control; d, post-weld quality evaluation. Among them, the post-weld quality evaluation compares the spatter weight, spatter size and temperature curve, and evaluates the welding quality based on the weight, spatter size and temperature curve. The method adopts a welding machine platform (10), a welding machine rotating end (20), a welding machine moving end (30), an oil pressure station (40), a spatter detection device (50), an infrared thermal imager (60), an industrial The friction welding control system of the computer (70) and the welding machine control system (80). The method evaluates the welding quality during and after welding and can control the welding process, has comprehensive evaluation information and high accuracy, effectively saves welding time, improves production efficiency, and reduces production costs.

Description

technical field [0001] The invention relates to the technical field of friction welding, in particular to a friction welding control and quality evaluation method based on weld seam temperature and spatter detection. Background technique [0002] Friction welding is usually that two workpieces to be welded rotate and rub against each other under a certain friction pressure, generating frictional heat, and the frictional heat forms a plasticized area on the contact friction surface of the two workpieces to be welded. The materials are plasticized, mixed, upset and then cooled to form a friction welded joint; in the friction welding process, the source of frictional heat comes from the plastic deformation layer of high-speed friction on the metal surface, which converts mechanical energy into thermal energy, making the weld zone heated Reach the plasticized state; under certain conditions, the friction heat energy is related to the friction pressure, speed, time and the size o...

AI Technical Summary

Problems solved by technology

[0003] In the friction welding process of the prior art, it is impossible to detect and analyze the welding effect in real time and adjust the friction pressure in a timely manner, and the friction welding joint is usually tested after the friction welding is completed to evaluate the welding quality

The existing technology has the following problems: first, it is difficult to correct the welding parameters in real time according to the welding effect of the stage during the welding process, and the controllability of the welding process is not high; second, the friction welding joint with poor welding quality needs to be re-welded, or even cannot be re-welded (i.e. directly scrapping), which greatly wastes production costs; the third is that through the welding-detection-re-welding process, the welding time is lengthened and the efficiency of friction welding is reduced, which is not conducive to industrial production; Evaluation of the welding process, unable to improve the welding process, so that it is impossible to comprehensively evaluate the welding quality factors

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