Optimisation of the wire feed rate during pulse MIG welding of Al sheets

• Autorzy: Park H. J. , Kim D. C. , Kang M. J. , Rhee S.
• Języki publikacji: EN

Abstrakty

EN

Purpose: This paper aims at optimizing the wire feed speed against the welding speed during the pulse-MIG (Metal Inert Gas) lap joint fillet weld of 1.6 mm aluminium alloy typically used for the light-weight car body. Design/methodology/approach: Welding experiments were conducted with various wire feed speeds of 0.5 m/min, 1.0 m/min, and 1.5 m/min, and the bead characteristics were evaluated. As shape factors of the weld bead, the bead width, back bead width, and bead cross-section area were measured. According to the weld quality and defined objective functions, the wire feed speed was optimized for various welding speeds. Findings: The wire feed speed that induces the optimum weld quality was found with welding speeds of 0.5 m/min, 1.0 m/min, and 1.5 m/min. The optimum lap welding conditions were then suggested for 1.6 mm aluminium alloy considering the productivity and quality. Research limitations/implications: The optimization will be extended to various aluminium alloys and the optimized results will be stored in the Al welding database of the intelligent welding power source development. Practical implications: With the increase of the welding speed for aluminium sheet welding, the corresponding wire feed speed should increase as well. On the other hand, it is clear that the maximum value of the objective function has decreased. Originality/value: This research revealed the relationship between the welding speed and the wire feed speed considering the welding productivity and quality. In addition, the criterion to evaluate the degree of weldability during lap welding is suggested according to the quality and objective functions.

Słowa kluczowe

EN

welding; aluminium sheet metal; pulse MIG (Metal Inert Gas) welding

PL

spawanie; cienka blacha aluminiowa

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2008
• Tom: Vol. 27, nr 1
• Strony: 83--86
• Opis fizyczny: Bibliogr. 15 poz., tab., wykr.

Twórcy

autor

Park H. J.

autor

Kim D. C.

autor

Kang M. J.

autor

Rhee S.

• Department of Mechanical Engineering, Hanyang University,17 Haengdang-Dong, Seoul, Korea,

Bibliografia

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