Multi-channel intelligent control induction heating device and method

Abstract

The invention provides a multipath intelligent control induction heating device and method. According to the device, the electromagnetic induction heating power supply unit and the heating module are arranged, so that the technical problem of cooperative heating of multiple paths of welding seams is solved. According to the device, independent or cooperative heating and temperature control of pre-welding preheating, inter-channel temperature maintaining and post-heating heat preservation treatment can be conducted on the welding seam, a heating curve is recorded, preheating can be synchronously started before the high-strength steel long welding seam is welded through the multi-path intelligent control induction device, it is ensured that welding is started at the same time on the same welding seam, and the welding efficiency is improved. Independent control of inter-channel temperature of each station and cooperative and synchronous heating and heat preservation after welding are achieved, the requirement of a high-strength steel welding process is met, a high-quality welding seam is obtained, cold cracks of the welding seam are avoided, and product safety is improved. In addition, compared with far infrared heating, electromagnetic induction heating can save electric energy by more than 30%, the surface temperature of the heating module is lower than 100 DEG C, the construction environment is improved, and the high-temperature scalding risk of constructors is reduced. The multi-channel intelligent control induction heating device and the multi-channel intelligent control induction heating method are suitable for application.

Description

technical field [0001] The invention relates to the field of pressure vessel welding, in particular to a high-strength steel welding pre- and post-heating multi-channel heating device and method, in particular to a multi-channel intelligent control induction heating device and method. Background technique [0002] Low-alloy high-strength steel is commonly used in pressure vessel structures. This type of steel solves the problem of delayed cracks in welded joints through preheating before welding, maintaining interpass temperature during welding, and post-heat treatment immediately after welding, so as to ensure weld quality and structural safety. . [0003] At present, the heating equipment can control multiple heating plates to heat at the same time, and measure the temperature at different positions at multiple points, but it can only control the heating and heat preservation according to the temperature fed back by the thermocouple of one line of temperature measurement, ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the high-strength problems such as high-strength steel long weld seam welding preheating, temperature maintenance between passes and immediate afterheating, each station cannot control the temperature individually, keep warm, and each station cannot coordinate heating, and cannot record the control process curve for each path. For the technical problem of steel welding heating recording, the present invention proposes a multi-channel intelligent control induction heating device and method

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