Aluminum alloys generally use argon arc welding or double-pulse gas shielded welding, which will cost less in the long run. However, if electric welding is used for welding, it is more picky about the electrode, and the ordinary aluminum electrode will be more picky about the material of aluminum. , and the welding performance and arc starting performance are not good, so the operation is not good. If you must use electric welding and have a good forming effect, you can choose the aluminum alloy welding rod WEWELDING555, which has good welding performance and has a wide range of versatility for any aluminum alloy.
WEWELDING555 aluminum electrode is a special coating, which can weld all kinds of cast aluminum and deformed aluminum, including difficult-to-weld 5XXX, 6XXX, 2XXX series aluminum alloys. Arc stability, minimal spark spatter, and welds with excellent corrosion resistance and color matching.
TIG welding of aluminum must use aluminum wire as the weld filler.
According to the specific material of the base metal, select the matching aluminum welding wire grade and model. Commonly used aluminum welding wires are:
Grade L109 (pure aluminum), type TAI, type L209 (aluminum-silicon alloy), type TAISi, type L309 (aluminum-manganese alloy), type TAIMn.
Ordinary electric welding aluminum, aluminum electrode models are used as follows:
L109 is an aluminum electrode with pure aluminum as the core and coating as the base. It is used for welding aluminum plates, pure aluminum containers and aluminum alloy components with low requirements.
L209 is an aluminum alloy electrode with aluminum-silicon alloy as welding core and coating as base type. It is used for welding aluminum plates, aluminum-silicon alloy castings, forged aluminum, hard aluminum and other general aluminum alloys. But it is not suitable to weld aluminum-magnesium alloys.
L309 is an aluminum alloy electrode with aluminum-manganese alloy as the core and coating as the base type. It is characterized by high weld strength and similar corrosion resistance to aluminum. It is used for welding aluminum-manganese alloys, pure aluminum and other aluminum alloys.
L409 is an aluminum alloy electrode with aluminum-magnesium alloy as the core and coating as the base type. It is a general-purpose welding material with a wide range of uses. Cast and wrought aluminum alloy suitable for welding or surface surfacing of magnesium, with high strength, good forgeability and good corrosion resistance. It is mainly used for the welding of aluminum-manganese alloys in bicycles, aluminum scooters and other sports equipment, locomotive carriages, chemical pressure vessels, ordnance production, shipbuilding, and other industries.
When welding, pay attention to the use of inverter DC welding machine for aluminum electrodes. The arc is stable and the defects such as slag inclusions in the pores are reduced. The aluminum welding wire should use AC tungsten argon arc welding, which is broken by the cathode. Or pulse melting electrode argon arc welding. Aluminum and aluminum alloy sheets can be welded with tungsten AC argon arc welding or tungsten pulse argon arc welding. Aluminum and aluminum alloy thick plates can use tungsten helium arc welding, argon-helium mixed gas tungsten arc welding, gas metal arc welding, and pulse gas metal arc welding.