Effect of cold arc to deflection in continuous welding of thin plate

Lee, Shi Guo (2016) Effect of cold arc to deflection in continuous welding of thin plate. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Thin plates are widely used by ship and automotive manufacturers for constructing ship and car body. The amount of distortion increase because increasing use of thin plates in ship and automotive industries. Low heat input welding process like cold arc welding process can reduce the distortion problem. Therefore, cold arc welding technology was used in the experiment. The objectives of this study are to study the effect of cold arc welding parameters to distortion of welded thin plate, suggest the optimum set of parameters for cold arc welding process according to tensile properties, and compare the distortion from experimental results to the simulation results. Firstly, the importance parameters were selected, which were current, voltage and welding speed. After the experiment was carried out, welding distortion was measured by using ruler. Besides, the tensile testing was carried out for finding out the related tensile properties. Then, all the results obtained from experiment were collected and discussed. After that, ABAQUS was used for simulating welding distortion and the simulated results was compared to experimental results. The results revealed that distortion could be reduced effectively by using cold arc welding process and heat input had effect on tensile properties of welded plates.

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