The melting temperature of aluminium is about 580 C (around 1076 F)Try to melt aluminium foil in your own open air fire, using kerosene or petrol burning in open airegroll up some aluminium foil and expose it to open flames from your gas stove, or fire from a pan full of burning kerosene (any hydrocarbon fuel), where the only source of oxygen is open air.Does the aluminium foil melt and start dripping like a liquid?If so, your air fire is hotter than the melting temperature of aluminium (around 580 C, or 1076 F)Go on, try it ! In fact, paper fire burns at Fahrenheit 451 F or about 233 CEven under strong winds, with lots of extra oxygen supplied, air fires rarely get hotter than 600 C, and can barely melt aluminium or glass.Now the melting temperature of steel (iron+carbon) is 1532 C, or 2790 F.Iron can only be melted in a specially designed blast furnace (where lots of extra oxygen is pumped into the furnace), or by using an arc or induction furnace.
Take it to a welding shop, have it professionally TIG weldedThis will cost you about $20Welding aluminum is not a job for amateursIt's very unlikely that you'll get good results if you don't know exactly what you're doing, and have never welded Al before.
You had better know what you are doing when welding aluminum tubingYou don't say if it is mig or tig weldingI would need to know more info to be able to tell you amps and volts (depending on if its mig or tig), like thickness of each piece, type or welding, have you considered filler wire type? But just guessing without any information 200 amps ought to ruin it for youI would get a bunch of aluminum scrap and practice on that first before doing your real part.
ok the voltage will be set by the make look for a tag that gives the correct info its on the machine sometimes in side on a access door as far settings thats user determined but before i go any futher do you know how to weld aluminum i hate to answer with a question with a question but you get one shot at it to do it right and the heat on said parst needs to be very hot too both pieces of work and dont guess on the amps needed to run said welder you can damage it all the info is on the welder and if not look it up on internet
You are interested in duty cycle10pct means 10 percent If you weld steadily(a long bead on the frame) you have 6 minutes of actual welding time for every hourThe rest of the time you have to wait for the welder to cool down so it will put out electrical currentThis is OK if you do a spot here and a spot there type welding but definitely not pipeline weldingYou want something with a high duty cycleThey will cost more but you are paying for horsepower(if you compare it to getting a car) MIG Wirefeed is the way to go for sheet metal as there is less heat as compared to stick.
The explanation as to why the world trade centers collapsed had to do with how these buildings were constructedInstead of a 3 dimensional grid of interlocking cubicles, all the vertical support beams were placed in the center of the buildingThis was then connected to the walls by a series of horizontal struts running under the floorsThe design allowed a lot of open floor space unobstructed by vertical support columns The horizontal supports were insulated in case of fire, but the aluminum aircraft shattered into hundreds of thousands of tiny shards, stripping off the insulationThe fuel tanks were fully loaded as well (the flights were headed for the west coast) and this ignited the initial fireThe organic materials in the offices then continued to burnThis served to weaken the three , 3/4 inch bolts attaching the horizontal support beams to the outer wallEventually enough horizontal supports failed that the outer shell buldged outward and shatteredThis caused the floor to collapse and this then spread down the remainder of the structure in a pancake collapseThe steel did not have to actually melt to failAt high temperatures Iron becomes very clay-like and this is why a blacksmith can work the metal with just a hammer and anvilThe steel inside internal combustion piston cylinders is usually water cooledSome smaller engines (like the volkswagon) are air cooledIf properly engineered, these engine designs can dissipate enough heat to aviod failureEngines which overheat fail because the pistons expand and get caught in the cylinders Therefore, it seems very plausable the world trade center was destroyed by a terrorist attackOn the other hand, it often it seems the United States creates its own terrorists and then uses them as propaganda to help its imperial ambitions along.
