A study on the welding conditions that affect thermal deformation and mechanical property of Al 5083 non-ferrous alloy for eco-environmental leisure ships
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As a considerable, experimental approach, an autocarriage type of CO2 welding machine and a MIG(metal inert gas)welding robot in the inert gas atmosphere were utilized in order to realize Al 5083 welding to hull and relevant componentsof green leisure ships. This study aims at investigating the effect of welding conditions(current, voltage, welding speed, etc.) onthermal deformation that occurs as welding operation and tensile characteristics after welding, by using Al 5083, nonferrousmaterial, applied to manufacturing of eco-environmental leisure ships. With respect to welding condition to minimize the thermaldeformation, 150 A and 16 V at the wire-feed rate of 6 mm/sec were acquired in the process of welding Al 5083through an auto carriage type of CO2 welding feeder. As to tensile characteristics of Al 5083 welding through a MIG weldingrobot, most of tensile specimens showed the fracture behavior on HAZ(heat affected zone) located at the area joined with weldmetal, except for some cases. Especially, for the case of the Al specimen with 5 mm thickness, 284.62 MPa of tensile strengthand 11.41 % of elongation were obtained as an actual allowable tensile stress-strain value. Mostly, after acquiring the optimumwelding condition, the relevant welding data and technical requirements might be provided for actual welding operation site andwelding procedure specification (WPS).
Abstract
As a considerable, experimental approach, an autocarriage type of CO2 welding machine and a MIG(metal inert gas)welding robot in the inert gas atmosphere were utilized in order to realize Al 5083 welding to hull and relevant componentsof green leisure ships. This study aims at investigating the effect of welding conditions(current, voltage, welding speed, etc.) onthermal deformation that occurs as welding operation and tensile characteristics after welding, by using Al 5083, nonferrousmaterial, applied to manufacturing of eco-environmental leisure ships. With respect to welding condition to minimize the thermaldeformation, 150 A and 16 V at the wire-feed rate of 6 mm/sec were acquired in the process of welding Al 5083through an auto carriage type of CO2 welding feeder. As to tensile characteristics of Al 5083 welding through a MIG weldingrobot, most of tensile specimens showed the fracture behavior on HAZ(heat affected zone) located at the area joined with weldmetal, except for some cases. Especially, for the case of the Al specimen with 5 mm thickness, 284.62 MPa of tensile strengthand 11.41 % of elongation were obtained as an actual allowable tensile stress-strain value. Mostly, after acquiring the optimumwelding condition, the relevant welding data and technical requirements might be provided for actual welding operation site andwelding procedure specification (WPS).
참고문헌 (11)
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