How to weld aluminum plate and iron plate

‌Arc welding method‌: suitable for welding thicker aluminum and iron plates. Arc welding uses the high temperature generated by arcs to perform welding, which is easier to learn, but the welding area needs to be protected, otherwise it will be affected by oxidation.

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The welding of aluminum plates and iron plates can be achieved through the following methods:

‌TIG welding method‌: This is a high-precision and high-quality welding method, suitable for welding thin plates and materials that are not suitable for other methods. TIG welding uses inert gas as a protective gas to ensure that the welding area is not oxidized. However, TIG welding requires high skill level and special equipment, and is costly. ‌

‌MIG welding method‌: This is a commonly used welding method, especially suitable for welding iron plates. MIG welding uses inert gas as protective gas, similar to TIG welding. The equipment used in this method is relatively cheap, but the welding quality is limited by the equipment and materials.

‌Copper welding method‌: This is a traditional method suitable for aluminum and iron plates. It uses copper as the filling material, and the joint strength after welding is higher. However, this method requires special skills and experience and has a narrow range of applications.

Preparations and precautions before welding:

Cleaning materials: The surface of aluminum alloy is prone to form an oxide film, affecting the welding quality. The welding area must be cleaned first, and surface dirt and oxide layers can be removed with wire brushes, sandpaper or polishers, or surface cleaning with appropriate solvents or aluminum alloy cleaning agents to ensure that there is no oil stains, rust and other impurities. ‌

Butt preparation: Ensure the butt method of welded joints is correct. Common joint types include butt joints, corner joints and overlap joints. The gap should be controlled between 0.5mm and 2mm.

Protective gas: The welding of aluminum alloy requires protective gas (usually argon or helium) to prevent the surface of the aluminum alloy from reacting with oxygen in the air during welding. Select the appropriate gas flow rate (typically 10-20L/min) to ensure that the welding area is not subject to oxidation.

‌Post-welding treatment‌: Post-welding treatment includes reducing stress and deformation generated by welding and improving the strength and stability of welding connections. Appropriate post-welding treatment can significantly improve the welding effect. ‌