Comparative analysis of welding defect between hybrid laser arc welding and tandem MAG welding in thin plate
Traditional SAW and SMAW method is frequently used for marine thin plate panel welding.However,the high heat input and double-sided welding with back gouging during welding which result in significant deformation.Hybrid laser arc welding and tandem MAG welding as novel welding techniques,faci litate automatic welding with ease and enable one-side welding both sides formation,thereby enhancing weld ing speed and production efficiency while markedly reducing welding deformation.This study presents panel welding of 6mm thickness AH36 grade steel plate in hybrid laser arc welding and tandem MAG welding methods,compares and consolidates the welding defects encountered.The findings indicate that issues such as pores,excessive spatter,and inadequate forming on back side could all come up when hybrid laser arc welding and tandem MAG welding for thin plates panel welding under stable equipment operation.In comparison to tandem MAG welding method,hybrid laser arc welding approach is more susceptible to undercut and non-fusion issue.Through comparative analysis,the comprehension of hybrid laser arc welding and tandem MAG welding methods is deepened,meanwhile enabling shipyards to proactively address potential defects,and select appropriate defect detect ion strategies,and provide reference for the development of innovative processes.
thin platehigh speed and efficiency automatic weldingsingle side weldinghybrid laser arc weldingtandem MAG weldingwelding defect
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