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What are the Best Methods for Stainless Steel Welding?

Stainless steel welding requires a bit more finesse than welding mild steel or aluminum, because heat is an enemy in this process. There are three methods of stainless steel welding which are preferred over the rest by many welders: Metal Inert Gas (MIG) welding, Tungsten Inert Gas (TIG) welding, and Shielded Metal Arc Welding (SMAW) or stick welding. The fumes made from any of these processes are very harmful, and great care must be taken to avoid breathing them.

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What are the Best Methods for Stainless Steel Welding?

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  1. What are the Best Methods for Stainless Steel Welding?

  2. STAINLESS STEEL WELDING Requiresabitmorefinessethanweldingmildsteeloraluminum, becauseheatis anenemyinthisprocess. Therearethreemethodsofstainlesssteelwelding whicharepreferredovertherestbymanywelders: MetalInertGas (MIG) welding, TungstenInertGas (TIG) welding, andShieldedMetalArcWelding (SMAW) or stickwelding. Thefumesmadefromanyoftheseprocessesareveryharmful, and greatcaremustbetakentoavoidbreathingthem. MIG WELDING Usesawirecontainingafluxcorealongwithashieldinggastomaketheweld. Theshieldinggasiscommonly100percentcarbondioxideoracarbondioxide andargonmix. Thisgaspreventsoxidationandpromotesastablearcwhilethe fluxcoreofthewireallowsstainlesssteelweldingtobeperformedinall positions. Amixtureof20to25percentofargonwiththecarbondioxidewill allowalowerheatsettingtobeusedwhenMIGwelding, resultinginaweldwith lessdistortionanddiscoloration.

  3. TIG WELDING Utilizesatungstenweldingelectrode, afillermetalrodandaninertgasto shieldtheweld. Thisweldingmethodrequireslittleornopost-weldfinishing. Thetungstentipintheweldingtorchistouchedtothematerialtobewelded. Thiscreatesanarcthatthewelderdipsthefillermetalrodintoandallowsit tomeltintotheweldingpuddle. Theshieldinggaspreventscontamination fromenteringtheweldandallowstheweldtoflowoutsmoothly. Heatis controlledthroughafootswitch. SMAW WELDING Utilizesatungstenweldingelectrode, afillermetalrodandaninertgasto shieldtheweld. Thisweldingmethodrequireslittleornopost-weld finishing. Thetungstentipintheweldingtorchistouchedtothematerialto bewelded. Thiscreatesanarcthatthewelderdipsthefillermetalrodinto andallowsittomeltintotheweldingpuddle. Theshieldinggasprevents contaminationfromenteringtheweldandallowstheweldtoflowout smoothly. Heatiscontrolledthroughafootswitch.

  4. Stainless steel welding is used in food preparation tables and fixtures, as well as many medical equipment applications. Exhaust fans and special smoke suction tips, which are attached to the welding torch are used when welding to keep the harmful smoke away from the welder. Stainless steel also scratches very easily so great care must be taken to keep debris off of the welding table.

  5. ARTICLE SOURCE: www.wisegeek.org IMAGE SOURCE: langfordmetal.com.au

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