Joining Metals Chapter 7.2,7.3

Name ThicknessCommentsProduction SMAWShielded Metal Arc Welding (stick) inFlexible, portable, requires skilled operator (ASME certification for pressure vessels)) Low Capital Cost High Labor Cost Good for Repair and low quantity SAWSumberged Arc WeldingUsually thick >0.18 in More automated version of arc welding 4-10 times as fast as Stick welding. Higher Capital, lower labor cost High quantity FCAWFlux Cored Arc WeldingSimilar to SAW in Automated, higher powerMedium to high quantity. Higher capital cost. GMAW (MIG) Gas Metal Arc Welding (Metal Inert Gas) inNon ferrous and sheet metallower quantity GTAW (TIG) Gas Tungsten Arc Welding (Tungsten Inert Gas) inNon ferrous and sheet metalMore about technical than economic OFWOxyFuel Gas Welding (oxy- acetylene) Good for sheet metalLow capital cost, slow, good for repair EBWElectron Beam Weldingfoil to 6 in (Al) (3.5 in for steel) narrow heat affected zone thick butt joints with no bevel Vacuum slows process, increases cost, limits size LBWLaser Beam Weldingfoil to 1 inch (multiple passes) narrow heat affected zone smaller parts Expensive equipment. CWCold WeldingRoll bonding of US quarters. Two 1.2 mm cupro nickel layers on 5.1 mm Cu core. Final total thickness is 1.36 mm FRWFriction Weldingn.a. ShaftsCan do dissimilar metalsmedium to high production RW RSW Resistance Welding Resistance Spot Welding Auto bodies, office furnitureMedium to high production

SMAW – “Stick”

GMAW – MIG 1tig.htm

GTAW - TIG

Electron Beam Welding techdata/ebweld.htm

Electron Beam Welding

getFile/laser_thick.html Laser Weld Advantages Deep narrow welds Low heat input Minimal distortion High joint completion rates Joint design flexibility Minimal use of consumable Ease of automation

Friction Welding

Resistance Spot Welding

Spot Weld and Ultrasonic Inspection

: me114/loc_key_spr_riv.htmwww.me.metu.edu.tr/ me114/loc_key_spr_riv.htm

welding_basics.php

page10/page10.htm

: me114/loc_key_spr_riv.htmwww.me.metu.edu.tr/ me114/loc_key_spr_riv.htm

Bralla