GTAW is a slow process and not typically used in high-production manufacturing, it is often a good choice in aluminum welding applications where productivity isn’t as important as quality and appearance.
During aluminum welding with the gas metal arc welding (GMAW) process, filler metal is fed into the puddle as soon as the welder squeezes the gun trigger. These “cold starts” can result in lack of fusion and insufficient penetration.
With GTAW, you control when the filler metal is added and are able to establish the puddle and ensure proper penetration before adding filler metal. Keep in mind that having more control over this variable adds another layer of complexity and operator skill compared to other processes such as GMAW.
So my brother in law works for Chick-fil-A and asked if I could fix this. Spent some of the weekend working on this and finishing it up. TIG’d some 1/2” aluminum together, drilled and tapped a hole to put a 5/8” bolt in it as a pin for the new hinge. Although this was cast aluminum I was impressed how well it went. My little TIG welder had a heck of a time heating everything up to get it to burn right. Of course I forgot a torch to preheat 😅 Still not too bad considering this is something like only my 5-6 time ever TIG welding.
My view from the floor the other day. Overhead aluminum tig welding on my back. 1” pipe with a wall thickness.093 to 3/8” thick wall 10-3/4” pipe. Two passes on each piece. 30’ feet long of 10” pipe. My neck hates this part. #aluminumtigwelding . 2nd pic is inside the 10” pipe showing a backing ring at the seam. One piece 20’ and one 10’ =30’
Space panels I’ve been building these last couple weeks. First couple pics are of a panel mounted to the rotisserie table. 40’ long table weighs in at 7500 lbs. The plywood holds the D tubes down tight on the panel for welding purposes. The last pics are panels mounted in carts to move from fab to washroom to paint. #spacethefinalfrontier#aluminumtigwelding#aluminummigwelding