Aluminum Welding Consumable
Aluminum filler metal is an alloyed wire electrode or rod type made from aluminum-magnesium or aluminum-silicon alloys. It compensates for the oxidation properties of the base material and prevents hot cracking.
Physico-Chemical Mechanism of Action
Aluminum filler metals contain additives like magnesium or silicon that improve the oxidation properties of aluminum. These additives react with oxygen in the air, forming a protective layer on the aluminum surface, which prevents oxidation.
Metallurgical Relevance & Welding Risks
Without a suitable filler metal, aluminum can oxidize quickly, leading to hot cracking. The additives ensure that the weld remains stable and crack-free.
Workshop Practice & Action Instructions
Use aluminum filler metals when welding aluminum parts, especially when high stability and low risk of hot cracking are required. Make sure that the additives are correctly applied and that welding is done in a clean environment.