David 8N482352 wrote on Tuesday, November 30, 1999 (PST): I have great difficulty welding aluminum with my Linclon AC arc welder. I spent a small fortune on expensive rods and I can not get them to arc. Have tried wide range of amps. Any suggestions are appreciated. Thanks. david boothby wrote on Wednesday, December 01, 1999 (PST): what you have written is true to welding older equipmenti yuess to weld a lot of older equipment on the farm arc. welding is the most efficent way to weld older equipment and it is relitively simple for the. expeiriced welder. arc welding is the second oldest welding process. known to man does anyone know the first oldest welding process there is. mr. david boothby George B. wrote on Thursday, December 02, 1999 (PST): Nice intro article. BTW, voltage jumps current kinda follows. Fred Martin wrote on Friday, December 03, 1999 (PST): Heres a keeper; An alarm should go off in your head before the first arc is struck. Wheres all the bombs at? That can of wd-40, it'll blow up. Get that Bic out of your shirt pocket, it'll kill you. That chaff will burn and grass and weeds will too, when its dry. Watch where you weld at And the next above all is protect those ears. One piece of molten slag in there and you may hang up welding for good. If you don't have a rag or piece of wadded up paper to stuff in your ear, cut off the bottom of your tee-shirt, it's that important. Fred from the Mungfactory Vic S. wrote on Friday, December 03, 1999 (PST): You did mention in your article about AC is great for ALUMINUM. I have no experience in aluminum...but have an ac and a mig welder. I think you must have been mistaken. Every thing I have researched for aluminum is in DC. Even with mig welders it is not common to expect good results. TIG is the method of welding aluminum due to the ability to control the low temp metal. Rods are made for DC welding but here the most important factor is cleaning surface of metal with proper wire brush. So far I have stayed away from aluminum welding due to my findings of ...its not easy unless you spend the money for that TIG unit. Brian wrote on Saturday, December 04, 1999 (PST): I wasn't aware aluminum could be welded with a stick welder. However, it can be welded with a MIG welder, provided you switch from stargon or C 25 to argon as a shielding gas. Brian Sal wrote on Saturday, December 04, 1999 (PST): The AC welder is the power sorce. You add a high frequency unit and some argon and your tig welding with your arc welder. By the way Vic AC is the proper current for aluminum bentorbroke wrote on Tuesday, December 07, 1999 (PST): You might want to mention the danger of having the welding cables around your body, especially around your head or chest area. This is even worse if you are between the cables, in the area of greatest magnetic flux. The old practice of draping the electrode holder welding cable over your shoulder, to make holding an arc easier, is specifically to be avoided. Keep the welding cables away from your body and keep the welding cables together. Taping the welding cables together, except for the last couple of feet, is a good idea. Lincoln Electric has published this warning in their "Stabilizer" publication. You may wish to contact them concerning this. Their address is; The Lincoln Electric Company 22801 Clair Ave. Clevaland, Ohio 44117-1199 Hope this helps, bentorbroke RiveRat wrote on Friday, December 10, 1999 (PST): All you guys are sort of right. When welding aluminum with a MIG machine you use DC with Argon gas for light materials and DC with Helium or Argon-Helium mix for greater penetration in heavier stock. When welding with a TIG setup you use AC with the same gasses as above depending on the thickness of the metal. AC current gives a better cleaning action on the oxides found on the surface of aluminum. A good quality MIG (NOT ONE OF THOSE PUNY 110 VOLT "SPECIALS" YOU SEE ALL OVER THE PLACE) welder is one of the best all purpose machines you can get. You can weld steel of nearly any thickness, stainless, and aluminum with them. Aluminum is best welded with a spool gun as the soft wire doesn't push well through a long feed tube. Most of the newer machines have a plug for a spool gun built in. Safety is paramount in every aspect of welding. When you're under the hood, the whole area around you could be on fire and you wouldn't even know it. Roger wrote on Saturday, December 11, 1999 (PST): Having been a weldor for 20 of my 33 yrs,I feel I must commend your stressing the proper safety equipment right off.Please,however do not neglect to warn people to never weld or torch on closed containers that have held flammable or volatile substances.I do,but I have been trained and have the proper equipment to do so.Even so,I dislike it immensely. Jim Crapsey wrote on Monday, December 13, 1999 (PST): Oge Say Good story John doe wrote on Friday, December 17, 1999 (PST): I ONLY HAVE ONE THING TO SAY ABOUT WELDING, IF YOU NEED TO HAVE CAST IORN WELDED, PLEASE MAKE SURE THE PERSON WELDING KNOWS WHAT HE IS DOING, I HAD A SO CALLED WELDER THAT SAID HE COULD WELD A SMALL CRACK IN A BLOCK, NO PROBLEM DON`T WORRY EVERYTHING WILL BE FINE. WELL I DON`T HAVE TO WORRY BECAUSE HE MESSED MY BLOCK UP BAD, AND DID NOT EVEN SAY I`M SORRY. SO BE CAREFULL IN WHO YOU TRUST WITH CAST IORN BLOCK. John doe wrote on Friday, December 17, 1999 (PST): I ONLY HAVE ONE THING TO SAY ABOUT WELDING, IF YOU NEED TO HAVE CAST IORN WELDED, PLEASE MAKE SURE THE PERSON WELDING KNOWS WHAT HE IS DOING, I HAD A SO CALLED WELDER THAT SAID HE COULD WELD A SMALL CRACK IN A BLOCK, NO PROBLEM DON`T WORRY EVERYTHING WILL BE FINE. WELL I DON`T HAVE TO WORRY BECAUSE HE MESSED MY BLOCK UP BAD, AND DID NOT EVEN SAY I`M SORRY. SO BE CAREFULL IN WHO YOU TRUST WITH A CAST IORN BLOCK. Steve wrote on Wednesday, December 22, 1999 (PST): The oldest form of welding would be called forge or fusion welding. This is where a blacksmith would take two metal pieces and heat them up in a forge until they were red hot. He would then hammer them together at the joint until a bond developed, reheating as necessary. The joint was probably not very strong since there would oxided metal in the joint that weaken the bond. AL wrote on Saturday, December 25, 1999 (PST): IF NOT MISTAKEN BORAX IS USED AS A FLUX WHEN FUSING METAL ALSO CAST SHOULD BE PREHEATED BEFORE WELDING AN COOLED VERY SLOW Allen Krahn wrote on Tuesday, December 28, 1999 (PST): The author says ",metal does not cool quickly even when quenched in water." This leaves the unsuspecting reader to believe that quenching is a good practice. IT IS NOT A GOOD PRACTICE TO QUENCH WELDS IN WATER! Rapid cooling of welds causes hydrogen embrittlement and results in cold cracking. This was the greatest cause of failed welds on the farm where I grew up. Good old iron will likely not require preheating, but this is a must with modern sophisticated alloy steels to prevent cracking and maintain a strong weld. This allows slower cooling rates and makes for stronger welds. alloy steels dr.bhaskarrao wrote on Monday, March 13, 2000 (PST): Sir, We have a Automobile Plant in Guntur , (Andhra Pradesh) Company name ; Sri Vijaya Durga Auto Reconditional Works Contact Person ; Mr.Dr.Bhaskarrao We are well established concern in Guntur We do all A.P.S.R.T.C & M.P.S.R.T.C works for Crankshafts welding. We have a Machine Storm Valcan Kota-Weld Sub-merged Arc welding We are using Flux & cotted-copper wire for kota-weldind machine, we are gettig flux from Raipur(M.P). for kind attention we are using monthly 50kgs of flux of 2 bags. We want much details about flux. Can u Suggest us which is best As Im browsing through net, i found this site & emberssed Can us suggest me the price list & the delivery time . Thanking u, Wth Regards Bhaskarrao. R Stewart wrote on Sunday, April 16, 2000 (PDT): I read all 4 of your articles on welding and I thought they were very interesting, especially for a beginner like me. I am thinking of buying a 225 stick welder and I would like to know what electrical wiring is required. Any information??? Thomas Van Hooser wrote on Sunday, August 05, 2001 (PDT): Very good article. Picked up alot of good information I was not aware of. Thank you. steve wrote on Sunday, May 04, 2003 (PDT): Good article - I think it would be interesting to see more about the situations where AC, DC+ and DC- should be used. Justin Graves wrote on Wednesday, May 11, 2005 (PDT): so far it is informative. gahorN wrote on Thursday, July 21, 2005 (PDT): And keep pets/dogs away because they don't know and you will BURN their eyes. G wrote on Saturday, February 25, 2006 (PST): I like your explanations without bogging down with to much technical jargen. Tallperson wrote on Sunday, July 20, 2008 (PDT): I wonder where the author of this article got his expirience in welding....? I've been welding for 40 years and carried multiple certifications for 35. Some of his basic tennents seem top me to be incorrect... Tallperson

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