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Shielding Gas For Aluminum Welding. For a pure 100 percent argon shield gas a flow rate of 20 to 30 cubic feet per hour is recommended when welding aluminum Shield Gas. Oxygen in the weld is obtained from additions of oxygen or carbon dioxide to the shielding gas.
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Pure argon is the preferred shielding gas for welding thin sections of aluminum. Shielding gas is one of the key parameters in the TIG welding process. Because aluminum is a non-ferrous metal it requires a 100 percent argon shielding gas.
Choose the right gas.
What process should you use. Again many welding supply stores carry their own mixture that can improve the weld quality and ease of welding on stainless steel. Oxygen in the weld is obtained from additions of oxygen or carbon dioxide to the shielding gas. Select an aluminum filler wire that has a melting temperature.
