친환경 레져선박에 적용되는 Al 5083 합금의인장특성 및 열응력에 미치는 용접조건의 영향
The Effect of Welding Conditions on Tensile Characteristics and Thermal Stress of Al 5083 Alloy Applied to Co-environmental Leisure Ships
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As a considerable, experimental approach, an Auto-carriage type of CO2 welding machine and a MIG(Metal Inert Gas) welding robotunder inert gas atmosphere were utilized in order to realize Al 5083 welding applied to hull and relevant components of green Al leisureships. This study aims at investigating the effect of welding conditions(current, voltage, welding speed, etc) on thermal deformation thatoccurs as welding operation and tensile characteristics after welding, by using Al 5083, non-ferrous material, applied to manufacturingof co-environmental Al leisure ships. With respect to welding condition to minimize the thermal deformation, 150A and 16V at thewire-feed rate of 6mm/sec were acquired in the process of welding Al 5083 through an auto carriage type of CO2 welding feeder. Asto tensile characteristics of Al 5083 welding through a MIG welding robot, most of tensile specimens showed the fracture behavior onHAZ(Heat Affected Zone) located at the area joined with weld metal, except for some cases. Especially, for the case of the Al specimenwith 5mm thickness, 284.62MPa of tensile strength and 11.41% of elongation were obtained as an actual allowable tensile stress-strainvalue. Mostly, after acquiring the optimum welding condition, the relevant welding data and technical requirements might be provided foractual welding operation site and welding procedure specification(WPS).
Abstract
As a considerable, experimental approach, an Auto-carriage type of CO2 welding machine and a MIG(Metal Inert Gas) welding robotunder inert gas atmosphere were utilized in order to realize Al 5083 welding applied to hull and relevant components of green Al leisureships. This study aims at investigating the effect of welding conditions(current, voltage, welding speed, etc) on thermal deformation thatoccurs as welding operation and tensile characteristics after welding, by using Al 5083, non-ferrous material, applied to manufacturingof co-environmental Al leisure ships. With respect to welding condition to minimize the thermal deformation, 150A and 16V at thewire-feed rate of 6mm/sec were acquired in the process of welding Al 5083 through an auto carriage type of CO2 welding feeder. Asto tensile characteristics of Al 5083 welding through a MIG welding robot, most of tensile specimens showed the fracture behavior onHAZ(Heat Affected Zone) located at the area joined with weld metal, except for some cases. Especially, for the case of the Al specimenwith 5mm thickness, 284.62MPa of tensile strength and 11.41% of elongation were obtained as an actual allowable tensile stress-strainvalue. Mostly, after acquiring the optimum welding condition, the relevant welding data and technical requirements might be provided foractual welding operation site and welding procedure specification(WPS).
참고문헌 (12)
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