Welding Vs Aluminium. Ad Find China Manufacturers Of Aluminum Welding. The short answer is that yes most aluminum castings are readily weldable.
Thermal conductivity and issues with porosity are the two biggest differences in welding aluminum compared to steel. The challenges to spot welding of aluminum compared to steel include a tenacious and rapidly forming oxide layer of variable thickness and composition high electrical and thermal conductivities small increases in resistivity with temperature a narrow plastic range low melting temperatures and a high coefficient of thermal expansion. The biggest differences between the two types of welding are the cost of the materials and.
The advantages of brazing include the following.
Hydrogen is very soluble in liquid aluminum. MIG or metal-inert gas welding is a common technique for both aluminum and steel. The filler metal can be aluminum-silicon brass bronze copper copper-silver gold-silver nickel alloy or silve r. Use argon mixed with carbon dioxide for steel but for aluminum you need straight argon.