Gas Welding Thin Aluminum. Aluminum will start to melt at 1200deg Fahrenheit but the brazing rod will melt at around 700deg so we want to get the aluminum hot enough to melt the rod without melting the tubing. Oxyhydrogen welding permits a wider range of gas pressures than acetylene without losing the desired slightly reducing flame.
On the other hand conventional aluminum TIG welds are susceptible to porosity if not done correctly. OK maybe not as old as that but it was an early process that is still a very effective form of welding particularly thin material or aluminum. Laser welding is typically a faster welding process compared to other welding processes due to its high power density at the materials surface.
Learn the tricks to Gas Welding aluminum sheet metal with Mike from Cobra Torches.
Laser welding is typically a faster welding process compared to other welding processes due to its high power density at the materials surface. Heavier material is seldom gas welded as heat dissipation is so rapid that it is difficult to apply sufficient heat with a torch. For welding thin aluminum the shielding gas of choice is argon. Welding aluminum with gas and hydrogen is a process that can easily be learned even by a beginner welder.