Comparative study on the project of the mixing ratio can affect the mechanical properties of tensile strength and its sectoral structure welding. That ratio mixture with carbon dioxide gas argon welding process with a different family. 7 mixing ratio using carbon dioxide to gas argon in a given ratio is 100:0, 80: 20, 60: 40, 50: 50, 40: 60, 20: 80, 0: 100, respectively. To set the flow rate of gas cover that 20 L/min 140 Amp connections power supply voltage that is used to connect 20 Volt 25 connection speed.4 cm/min welding wire, adjust the angle, angle 90°, and welding wire feeder speed constant, then make connections according to the mixing ratio of product that have been defined and tested two groups: the mechanical properties tensile strength test.
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