Any Company using Welding MIG WIRE 1.0 w/o FLUX?
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Look up:\n\nwww-WeldingAnswers.com
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A transformer style welding machine converts the high voltage and low current electricity from the utility into a high current and low voltage, typically between 17 to 45 volts and 190 to 590 amps. This type of machine typically allows the welder to select the output current by either moving the core of the transformer in and out of the magnetic field or by allowing the welder to select from a set of taps on the transformer. These machines are typically the least expensive to purchase for hobbyist use.
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Follow the same safety rules for welding stainless as for welding anything else.  You don't say if you are arc-welding, gas-welding or MIG- or TIG-welding, but you shouldn't be breathing the fumes whatever method you are using. The most toxic gases are likely to come from impurities in the metals you are welding rather than the welding gases themselves.\n\nShame on your new employer for assuming you had the appropriate safety training, or shame on you for giving the impression you did!
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New research is unlocking the amazing potential of high-temperature superconductors.  The special "talent" of superconductors is that they have zero resistance to electric current. Absolutely none. In theory, a loop of HTS wire could carry a circling current forever without even needing a power source to keep it going.\n\nIn normal conductors, such as copper wire, the atoms of the wire impede the free flow of electrons, sapping the current's energy and squandering it as heat.\n\nToday, about 6 to 7% of the electricity generated in the United States gets lost along the way to consumers, partly due to the resistance of transmission lines, according to U.S. Energy Information Agency documents. Replacing these lines with superconducting wire would boost utilities' efficiencies, and would go a long way toward curbing the nation's greenhouse gas emissions. \n\nThese links provide a wealth of information.  I hope they are helpful to you.
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Try Thermo.com/neslab contact them with any questions you have.
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Look into a product called Alumaloy. It's like welding that you can do with an ordinary propane torch. They claim its stronger than steel and will bond to any kind of metal.
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use an acetylene torch aluminum rod & flux.
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Friction stir welding.\n\nhttp://www.azom.com/details.asp?ArticleID=1170
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To be a little more descriptive than the other two answers: A MiG welder uses a small diameter wire that is fed through the stinger to create the arc as well as the filler metal. A TiG on the other hand works like a "Tourch" and you add the filler metal manually, as with oxy-fuel welding.\nTiG welding gives the welder a whole lot more control than a Mig welder, you have the ability to manipulate the current for any number of situations and circumstances. \nAnd a TiG is capable of welding a much larger range of metals and alloys.\n\nMig is great for lay'in down alot of bead when your welding mild steel, SOME stainless and aluminum alloys, save the cast work amd exotic metals for the TiG.
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Try the Sheetmetal Contractors Association  its somthing like SMACA .\n\nFabrication is not the hard part.   Laying out the various fittings may be more than you want to do.\n\nThere are software packages available that will do the layout work for you but all I've seen are pretty expensive.
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TIG welding uses argon gas and a very hot electrode to essentially melt two metals together. MIG welding uses a wire fed filler to fill the space in between to pieces of metal.
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See if these answer your question.\n\nhttp://www.finishing.com/Library/flux.html\n\nwww.residues.com/pdfs/woa_flux_residue.pdf\n\nhttp://smt.pennnet.com/Articles/Article_Display.cfm?Section=Archives&Subsection=Display&ARTICLE_ID=83118
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I use a torch with MAPP guess whenever I solder copper pipes.  For welding iron, I use a MIG or arc welder.
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There are two issues to consider, cable heating and voltage drop.  Of the two, voltage drop is by far the easiest.  You need to determine what the allowable voltage drop in you cable is.  The voltage drop is just I x R where I is the current and R is teh round trip cable resistance.  The specification of 100 kW isn't enough.  If its a high tension 100 kV line, the current is only 1 amp and a run of 16 AWG wire would deliver about 99,999 volts out of the original 100,000 volts to your load.  If its a 100 volt system then a 4 AWG wire would only deliver only 20 volts to the load.  \n\nThe formula for wire resistance (in AWG) is that 10 AWG has 0.001 ohm/ft.  Each increase of 1 in the gauge increases resistance by the cube root of 2 (about 25%).  You calculate by picking what voltage drop you can live with, for the known current figure the resistance, knowing the length figure the resistance per foot, and then pick the AWG using the above.\n\nThe second concern is wire heating.  Although you could do the heat transfer calculations, instead look up the allowable ampacity for any wire in an electrical engineers or NEC handbook.
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Basically, you just need two different types of metals to generate a current. I assume your using copper as your other metal type.\n\nIf you dont have any zinc wire, you could try using a galvanized (zinc coated) screw.\nOr if you want to use another metal all together, try Aluminum in the form of Aluminum foil.  An Iron nail or a chunk of lead would also work, but not as well.
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Hi my freund.\nTIG is one of the method of fusion arc welding which its exat name is GTAW(Gas Tungestan Arc Welding)and contain a tungestune electrode and some sheilding gas such as Argon and Helium .\nI dont know how much information do you want.If you need more you cam mail to me by this address:\nmostafahedayati@yahoo.com to answer more accurately.\nGood luck
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I hope this link may help.  http://www.hefce.ac.uk/news/hefce/2006/perfind.htm