Steel structure welding deformation analytical method

Abstract

The invention relates to a steel structure welding deformation analytical method. The method comprises the steps of a, establishing a computer welded joint model, and enabling the joints with five standards of a flat V-type butt joint, a flat X-type butt joint, a T-joint V-type groove, a T-joint X-type groove and a fillet joint V-type groove to be simplified to be in two forms of a plate butt joint and a T-joint; b, collecting field data; c, carrying out analogue simulation on a finite element of computer thermal mechanical coupling; d, comparing data, and conducting comparison inspection to data obtained through experiments and three-dimensional model analytical data; and e, formulating welding process, and calculating welding residual deformation and stress of the joints by inputting welding parameters such as the welding method, the groove parameter, welding currents, welding voltages and welding speed. By means of the steel structure welding deformation analytical method, welding production processes are simple and direct, subsequent processing and trimming procedures are reduced, working time cost and fuel cost are lowered, production efficiency is improved, and the quality of the welding joints is also greatly improved.

Description

technical field [0001] The invention relates to a welding method, in particular to a method for analyzing welding deformation of a steel structure. Background technique [0002] During the welding process, due to the existence of welding heat effect, welding residual stress and deformation will inevitably occur. In the current actual production, people only rely on experience or experiments to obtain reliable and economical welding structures, not only will it take a lot of time and money, but any failure of the attempt will cause significant economic losses There is chance. Due to the existence of residual welding deformation and stress in the production process, the workload of the repair process after welding is very heavy, which seriously wastes a lot of fuel costs and also leaves certain hidden dangers to the welding quality. Contents of the invention [0003] Aiming at the deficiencies in the above-mentioned prior art, the present invention provides a method for an...

AI Technical Summary

Problems solved by technology

In the current actual production, people only rely on experience or experiments to obtain reliable and economical welding structures, not only will it take a lot of time and money, but any failure of the attempt will cause significant economic losses There is chance

Due to the existence of residual welding deformation and stress in the production process, the workload of the repair process after welding is very large, which seriously wastes a lot of fuel costs and leaves certain hidden dangers to the welding quality.

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