DISCLAIMER: NOT my video and I do not know this man. Real nice technique for attaching the two dissimilar metal together. Watch until the end to see if they are really Welded.
He covered up the bolt kinda like the dome over the reactor at Chernobyl!! hey not “exactly” or remotely welded together but the aluminum hat he created did the job !
Long time ago, I welded Stainless steel to aluminum, with an electron beam welder, no filler. Surprisingly it was pretty strong. Could not break it by hand. Cut a section to polish and etch. Metallurgy sucked.
Probably one of the most talented welders on the interwebs. The guy does fantastic work, and openly shares tips on welding. Always takes on challenges from watchers. Probably the purpose of the video.
I worked in a refinery in my youth. The older welders would "weld" a piece of copper tube to the steel workbench . They used 7018 rod. I was difficult to remove from the bench. Nick
Pretty cool. Liked the way he chased the molten aluminum around to make it flow out evenly. I've never done that with dissimilar metals, but in the 70s, I liked moving aluminum around with just the heliarc torch ( TIG to the younger guys). Always tried to make my work look good. Thanks for posting.
Some sales guys came by the shop where I was working in the early 90s. They had a bar or steel welded to a bar of aluminum using friction welding. It was bent 90 degrees at the weld. Only the aluminum bent. Don't know what ever became of the process.
The video said; "Hold on, keyboard commandos, I know you are frothing at the mouth to publicly whine about something in the comments section" Hit the nail on the head....HAHAHAHAHAHAHA
Friction welding also known as Inertia welding is used a lot in the turbine aircraft engine and aerospace industry. It is often used to join dissimilar metals together including aluminum, ferrous alloys and super alloys. It involves spinning one of the metals and then forcibly pressing it into the other metal and as both surfaces overheat from friction a weld is formed. That is a oversimplification because both surfaces must be engineered to specific shapes and the equipment used is specialized involving the ability to spin one end a clutch system to break loose once the weld is accomplished. An example might be joining a shaft to a turbine compressor wheel or rotor in a turbine engine. It can be as simple as attaching a steel treaded stud to an aluminum plate. The process becomes becomes expensive due to the machines used and dedicated tooling to hold the parts for each specific job.
At the time I was working in the Components section at the UAL overhaul base in South City. Doing calibration. Prior too that I had worked for the processes engineers making all sorts of things for them to weld together with the EB welder and then cut it apart to see how the weld turned out. Also did Plasma Spray and hydro forming experiments. It was a pretty good job.
I think it was to prove the bolt wasn't aluminum simply based on its appearance/color change after heating. That's my guess.
I think just to show that it was not aluminum. Aluminum would not discolor. Preemptive strike to the naysayers.
Was the bolt encased by a mound of aluminum welding rod or was it actually melted and fused with the aluminum as in fusion welding. Looks like the former.
Well, he didn't technically weld the two metals but he attached one to the other and it apparently was effective.
Ok I could do that "welding".. But sure as shit the peice of aluminum would arc and stick to the bench, guaranteed!
For the guys that are complaining, its basically a similar process to soldering or brazing parts together. Joining by using surface tension rather than actually blending the metals composition of alloys. He just takes it one step further and shows you how to attach stainless to aluminum. Think about it.......If you had an aluminum panel that was dented and you needed to pull it out without drilling a hole, you could do this just like the "dent pullers" that are used for steel panels. Then grind it off and no hole left behind. Or maybe you need something you can attach a brace to just to stiffen the aluminum panel. With the bolt, you can still remove the bracket or panel. Its just another weapon in our tool arsenal as far as I'm concerned.
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