Intelligent real-time temperature control and shape control device and method for thick plate laser welding

Abstract

The invention discloses an intelligent real-time temperature control and shape control device and method for thick plate laser welding. A computer control system, a before-welding planning system, a laser welding system, a monitoring and feedback system, a self-adaption water cooling system, an anti-deformation adjustment system and a self-adjusting vibration system are included. The before-welding planning system presets process parameters and an anti-deformation angle according to a welding material and the welding part size; the monitoring and feedback system is used for monitoring the temperature, anti-deformation and stress in the welding process and feeding back the temperature, anti-deformation and stress to the computer control system in real time; the self-adaption water cooling system conducts self-adaption control over the temperature and heat accumulation in the welding process; the anti-deformation adjustment system adjusts the anti-deformation angle; and the self-adjusting vibration system adjusts the vibration frequency and amplitude of a vibrating piece, and the stress in welding process and after welding is further reduced. By means of the intelligent real-time temperature control and shape control device and method, the temperature, deformation and stress conditions in the thick plate laser welding process can be monitored and regulated in real time, the deformation and stress after welding are greatly reduced, and it is ensured that high-quality thick plate laser welding parts are obtained.

Description

technical field [0001] The invention belongs to the field of laser welding, in particular to an intelligent real-time temperature and shape control device and method for laser welding of thick plates. Background technique [0002] Welding of thick plate structures is very common in the manufacturing process of major equipment such as petrochemical, marine manufacturing, aerospace and power generation equipment. Generally speaking, the welding of thick plate structures requires multi-layer and multi-pass welding methods, and requires very complicated welding auxiliary measures and devices. With the large-scale and professional development of modern equipment, the welding problems of thick plate structures have become increasingly prominent, and the development of efficient and reliable thick plate welding technology has become one of the key technologies for manufacturing large or super large structural parts. Compared with traditional arc welding, laser welding has become a...

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Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the present invention provides an intelligent real-time temperature control and shape control device and method for thick plate laser welding, which can intelligently preset the anti-deformation angle, reduce post-weld deformation, and effectively control the thick plate laser in real time. During the welding process, the temperature, stress and residual stress after welding are within a reasonable range, avoiding the occurrence of welding defects such as welding incomplete fusion and cracks, improving the quality of thick plate weldments, and shortening the time required for interlayer cooling, effectively improving thickness. The efficiency of plate laser welding is improved, and finally high-efficiency and high-quality thick plate laser welding is realized

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