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Location: Welding, A Novice's Primer

Discussion: Explosive Welding

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FortViking	Explosive Welding Sep 8 2010, 2:13 PM EDT \| Post edited: Sep 8 2010, 2:13 PM EDT Im an explosive welder for a company here in canada, the only reason you would do it is to bond dissimilar metals such as stainless steel to copper or aluminum to copper, to increase electrical conductivity through the aluminum or stainless steel, its mainly for the mining industry in electroplate refining. im one of the few people trained in the world do do such a thing.. Post reply Do you find this valuable? Keyword tags: build construction metal working weld welding
FrankLeeDeRainged	1. RE: Welding Sep 8 2010, 2:32 PM EDT \| Post edited: Sep 8 2010, 2:32 PM EDT Spent some years learning an using TIG for stainless and copper, I wouldn't recommend a complete novice having a stab at it. Your most likely just going to break something before you get results. Ceramic shields and Tungsten rods are going to be hard to replace and the gas? With a mountain of spares and some experience with gas welding you 'might' get some where. Post reply Do you find this valuable?
DevilNuts	2. RE: Explosive Welding Sep 8 2010, 4:36 PM EDT \| Post edited: Sep 8 2010, 4:36 PM EDT If you want to talk shop, get with brandon_a_boyer. He is also a student of the slag. I used to be an ironworker, but my AWS cert fell off a long time ago. Post reply Do you find this valuable?
brandon_a_boyer	3. RE: Explosive Welding Sep 8 2010, 4:47 PM EDT \| Post edited: Sep 8 2010, 4:47 PM EDT Clad is also used alot in chemical refinerys and with the petroleum industry. There are a few companies here in the states that do it too. But you are right, it's a very limited industry. Post reply Do you find this valuable?
FrankLeeDeRainged	4. RE: Explosive Welding Sep 8 2010, 5:06 PM EDT \| Post edited: Sep 8 2010, 5:06 PM EDT I'm thinking post-Zed Brandon, but wasn't their a process for producing acetylene with some weird old bucket chemistry technique? I recall something about lamps that used nitric acid and something it reacted with. . . I can't remember it was too long ago. I never bothered getting the bottles for my gas set here cause its not sustainable. Post reply Do you find this valuable?
DevilNuts	5. RE: Explosive Welding Sep 8 2010, 5:43 PM EDT \| Post edited: Sep 8 2010, 5:43 PM EDT Why would you even want to mess with that stuff in an uncontrolled setting? Post reply Do you find this valuable?
FrankLeeDeRainged	6. RE: Explosive Welding Sep 8 2010, 5:48 PM EDT \| Post edited: Sep 8 2010, 5:48 PM EDT Gas welding and cutting is nice! always preferred it to stick. Post Zed I could fire up the genny (assuming fuel) or rig something direct from car battery's and get about 60 seconds welding out of about three weeks solar charge! If I needed to weld . . . Post reply Do you find this valuable?
DevilNuts	7. RE: Explosive Welding Sep 8 2010, 5:50 PM EDT \| Post edited: Sep 8 2010, 5:50 PM EDT Gas welding and cutting is nice, but turning yourself into hamburger in the pursuit of such would not be so nice. If there's one thing I ever learned on the job, it's to respect Acetylene. And to me that means not trying to produce it in buckets. Post reply Do you find this valuable?
FrankLeeDeRainged	8. RE: Explosive Welding Sep 8 2010, 5:59 PM EDT \| Post edited: Sep 8 2010, 5:59 PM EDT Lol. Bet your glad you didn't work in Swan&Hunters shipyards then where pranks included rolling an Oxy bottle into the locker room and bleeding it into someone locker overnight, thus super-oxygenating their overall! Or taking the thin black plastic rubbish bags (just invented) filling it with Acetylene, tying it off and batting it at someone who was, mask down welding. Happy days, how we laughed. . . Post reply Do you find this valuable?
brandon_a_boyer	9. RE: Explosive Welding Sep 8 2010, 6:05 PM EDT \| Post edited: Sep 8 2010, 6:05 PM EDT Acetylene is generated either by dripping water onto calcium carbide or through a chemical process involving methane. The primary difficulty with Acetylene is that it is relatively unstable while under pressure. Past 15 psi it can spontaneously combust. To circumvent this the acetylene is forced down into solution with a acetone solution. Post reply 1 out of 1 found this valuable. Do you find this valuable? Do you?
DevilNuts	10. RE: Explosive Welding Sep 8 2010, 6:06 PM EDT \| Post edited: Sep 8 2010, 6:06 PM EDT No, I worked jobs where you respected the hazards around you or you ended up hurt. I saw an Oxygen tank go on a job once, knocked three guys off the steel and damn near killed a crane operator. Post reply Do you find this valuable?
FrankLeeDeRainged	11. RE: Explosive Welding Sep 8 2010, 6:12 PM EDT \| Post edited: Sep 8 2010, 6:12 PM EDT Calcium carbide, that was it they used to use that for car headlamps. Even I'm not that old but Ive seen them, Thanks guy. DN seen more than one bottle go, but the most annoying was the one the blew a bloody big hole in the roof of the shed, We'd just built it! Post reply Do you find this valuable?

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