Influences of Welding Speed and Speed of Pin Tool Rotation from Semi-Solid State Joining of Aluminum Alloy SSM 5083 Covered by CO2 Gas
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Abstract
The purpose of this research was to examine the butt joint welding of aluminum alloy SSM 5083 with semi-solid metal processing. The variables in welding were the rotation speed of tool pin at 1,200 and 1,500 rpm. The welding speed was at 120 and 160 mm/min. The welding temperature of carburizing flame was at 590 to 610 ˚C and CO2 was applied to cover the welding line.
After the welding experiment, there was no crack which occurred from not joining condition on both top and down welding area. The porosity was occurred less in macro structure the rotation speed of tool pin at 1,200 rpm with welding speed at 160 mm/min. The micro structure, in the rotation speed of tool pin at 1,200 rpm with welding speed at 160 mm/min, there was spheroidal structure and grain dispersed regularly. On the rotation speed of tool pin at 1,500 rpm of both welding speed, the dendrite structure was occurred. It can be concluded that the rotation speed of tool pin at 1,200 rpm is most suitable for semi-solid state joining.
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References
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