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dave1490
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just a side note here but your going to need a bigger generater for that welder.you,ll notice that even the small one,s that are 115volt need a 15-20 amp circut.that,s 1800-2400 watts.
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dave1490
Guest
Self-shielded Flux-Cored Arc-Welding process
(FCAW), or flux-cored for short, is different in that it uses a wire which contains materials in its core that, when burned by the heat of the arc, produce shielding gases and fluxing agents to help produce a sound weld, without need for the external shielding gas. We achieve a sound weld, but in a very different way. The shielding is very positive and can endure a strong breeze. The arc is forceful, but has spatter. When finished, the weld is covered with a slag that usually needs to be removed. A "drag" angle for the gun is specified which improves operator visibility. The settings on the wirefeeder / power source are slightly more critical for this process. Improper technique will have results that are magnified. This type of welding is primarily performed on mild steel applications outdoors. .035" is often used for the 115 volt machines and the .045"is typically used in the 230 volt machines. Farmers have found that these products can save a planting or harvest by repairing a broken machine out in the middle of the field in record time.
Now for a little history lesson;
Arc welding roots go back to 1800's when an English scientist discovered that an electric current would form an "arc" when forced across a gap of steel plates. Electric was not used for "arc welding" until 1880's when DeMeritans, a French inventor, used it to join plates in a storage battery with a "carbon arc." The procedure was improved on and it was discovered that a bare metal rod, now named an "electrode," would melt off by the heat of the arc and act as filler metal in the weld.
Using the bare electrode was hard to control and caused a weld that is porous, brittle, and weak. By the early 1900's an important development was the discovery that welds are stronger and easier to make when a chemical coating was placed on the metal electrode. The coating was called "flux." The flux was baked on the electrode and was renamed."
World War I and II placed a high demand on manufactures and builders so the "arc welding" process was further developed and honed. For example, riveting used in the building industries was replaced with welding. Many companies sprang up in America to manufacture welding machines and electrodes to meet the new demands. The perfection of welding processes continued at a rapid rate.
Other techniques such as Gas Metal Arc Welding, aka "MIG," and Gas Tungsten Arc Welding aka "TIG" were perfected. An arc is struck between a "nonconsumable tungsten" rod and the base metal. The heat of the arc causes the edges of the plates to melt and flow together. A filler rod can be manually applied, if needed A patent was granted for a "TIG" process and was named "Heliarc®."
MIG welding is identified by the American Welding Society and uses a " . . . continuous solid wire electrode for filler metal and an externally supplied gas (typically from a high-pressure cylinder) for shielding. The wire is usually mild steel . . . " (Lincoln Electric). The wire is fed through a "gun." The MIG process is widely used in aircraft and automobile manufacturing. MIG is easy to learn, it speeds up production and produces high quality welded joints. One drawback is that it can't be used in vertical or overhead positions.
"Plasma arc welding" was introduced in the Unites States. The atomic/nuclear energy ushered in "electron beam" welding. Other systems such as "inertia friction welding" followed.
Laser welding or "fusion" is one of the newest processes. "Laser welding is a high production welding process that produces deep penetration welds with minimum heat effective zones" (Laser Fusion, www.laserfusionwelding.com.) Because of the tremendous concentration of energy in a small space, it proved to be a powerful heat source. The laser welding process is still finding welding applications in aircraft industry and other metalworking operations.
Now that being said Herrm; Please look into a small mig welder to start with; learn to make a strait beed frist them work on joining metals.....
hello loco im also looking for a welder{home hobbyest type}was looking at a mig machine also around 130 amps but would like to cut with it aswell.should i just burn thought the job or get a oxy-assetaline rig.need something for car,s {1/4in max} ect what would you suggest.thanks
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locoWelder
Guest
Well I dont know what kind of $$$$ you got to work with, but @ around 750.00 you can get yourself the Lincoln Power MIG 140C this will fit your needs and give you some growing room , and yes get yourself a good Port-a-Torch by Harris it contains all the quality equipment needed for cutting, welding and brazing in a rugged molded plastic carrying case. The outfit is designed to carry one MC acetylene cylinder and one 20 cu. ft. oxygen cylinder. As supplied, the outfit is capable of cutting to 1" and welding to 1/16". They run about 400.00.....hope I helped you. Loco
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Herrmanator8
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thanks alot loco, that post had tons of great information. so what you saying is that arc welding is harder than mig? so if i get mig, does it have to be wirefed because the wirefeed welding guns are like $600-$800... i just want the simplest , cheapest thing i can get.
maybe something like this would be a good investment:
http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_200342925_200342925
jon
maybe something like this would be a good investment:
http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_200342925_200342925
jon
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dave1490
Guest
thanks loco,i was hoping to get 1 rig that,ii do both and {herr}you dont have to get a wire feed 1 a stick 1 will do also.i dont know if it,s a harder weld just cleaner.ebay has some,i think thier 80amps for $100 mig,s. i,v seen them and they are build cheaply much like a king,s engine.
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