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Manufacturing & Metal Working

Welding

Welding Article

Welding is a fabrication process that joins materials, usually metals or thermoplastics, by causing coalescence. This is often done by melting the workpieces and adding a filler material to form a pool of molten material (the weld puddle) that cools to become a strong joint, with pressure sometimes used in conjunction with heat, or by itself, to produce the weld. This is in contrast with soldering and brazing, which involve melting a lower-melting-point material between the workpieces to form a bond between them, without melting the workpieces.

Many different energy sources can be used for welding, including a gas flame, an electric arc, a laser, an electron beam, friction, and ultrasound. While often an industrial process, welding can be done in many different environments, including open air, underwater and in space. Regardless of location, however, welding remains dangerous, and precautions must be taken to avoid burns, electric shock, poisonous fumes, and overexposure to ultraviolet light.

Until the end of the 19th century, the only welding process was forge welding, which blacksmiths had used for centuries to join metals by heating and pounding them. Arc welding and oxyfuel welding were among the first processes to develop late in the century, and resistance welding followed soon after. Welding technology advanced quickly during the early 20th century as World War I and World War II drove the demand for reliable and inexpensive joining methods. Following the wars, several modern welding techniques were developed, including manual methods like shielded metal arc welding, now one of the most popular welding methods, as well as semi-automatic and automatic processes such as gas metal arc welding, submerged arc welding, flux-cored arc welding and electroslag welding. Developments continued with the invention of laser beam welding and electron beam welding in the latter half of the century. Today, the science continues to advance. Robot welding is becoming more commonplace in industrial settings, and researchers continue to develop new welding methods and gain greater understanding of weld quality and properties.

Welding Items

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WH-2 OC Welding Torch Handle SA-498
$0.99
WeldingPro 400 Amp Mig Gun Miller back end WPM415-3545
$129.00
LINCOLN WELDER WIRE FEEDER POWER FEED 10 BENCH MODEL
$499.99
RAMSOND CUT 50 DX A 50A AMP AMP INVERTER PLASMA CUTTER
$362.00
ParkerMP 40A Plasma Cutter/160A TIG/Stick DUAL VOLTAGE!
$599.99
MIG 135G FLUX MIG MAG WELDER LINCOLN COMPATIBLE 110 V
$209.99
28.5# 308L /.045 Stainless solid Mig wire NR
$49.00
welding Helmets
$0.99
3m autodark welding helmet
$75.00
WELDING HELMET AUTO DARKENING MIG TIG ARC GAS WELDERS
$18.87
3) WELDER MAGNETS 50lb METAL FAB MIG TIG TACK WELDING
$9.98
LINCOLN Electric AC 225 Arc Stick Welder Helmet&Cart
$115.00
160 AMP DC ARC TIG MMA WELDING WELDER IGBT INVERTER NEW
$299.99
NEW Oxy Acetylene Welding Cutting Torch Kit Fits Victor
$59.95
50A New Plasma Cutter CUT50D Inverter Dual Voltage
$249.00
TIG heliarc torch body welding metal ornamental art @@
$18.00
RAMSOND 50 A PLASMA CUTTER 180 AMP TIG 160 ARC WELDER
$525.00
Lincoln LN-25 Mig Welder
$960.00
Miller 3phase Miller-Matic 3 ½ LB spool gun welder
$1499.00
"Miller Killer" Jumbo 21" Welding Decal, Brand New
$6.99
PARKER 7110 RED GREEN WELDING HOSES FOR ACETYLENE ONLY
$20.53
Optrel Galaxy Passive Welding Helmet
$28.99
NEW Oxy Acetylene Welding Cutting Torch Kit Fits Victor
$59.95
CUSTOM ARGON GAS CONTROL CABINET
$7.22
HOBART 500500 HANDLER 140 MIG WELDER 110 VOLT
$502.73
MILLERMATIC 140 MIG WELDER # 907311
$618.00
MILLERMATIC 140 MIG WELDER AUTOSET # 907335
$649.00
WELDING GOGGLES ~ SPECIAL NON FOG FLIP UP LENS ~ NEW!
$0.99
Lincoln LN-25 Mig Welder
$960.00
HOBART 500525 HANDLER 187 MIG WELDER
$666.19
Welding Cable 2 AWG Battery Trunk Relocation Mustang
$9.99
Miller Thunderbolt® XL 225/150 AC/DC 903642
$575.00
Welding Helmet Clear Plastic CR-39 COVER PLATES LENS-15
$3.75
Welding Kit Helmet Gloves Magnet Clamp Chipping Hammer
$27.99
TurboTorch STK-99 Torch Kit EXTREME 0386-0851 NEW
$59.00
40A New Plasma Cutter CUT40 Inverter 220V Voltage
$199.00
40A New Plasma Cutter CUT40D Inverter Dual Voltage
$229.00
AUTODARK WELDING HELMET MASK for mig wire tig arc MAG
$24.99
Campbell-Hausfeld Torch Handle Cutting Head Attachment
$12.05
HOBART 500527 HANDLER 187 MIG WELDER & RUNNING GEAR
$741.38
SILVER MINE DISTRIBUTION WELDERS PENCIL LOT OF 3 PACKS
$0.99
HELMET MASK WITH SOLAR POWER CELL AUTO DARK FOR WELDING
$39.99
NEW TWECO 10271032 MIG WELDING GUN
$82.00
Welder's Helper Copper Backing Support Spoon *NEW*
$9.99
HD MIG 6130X FLUX MIG MAG WELDER LINCOLN COMPATIBLE
$249.99
JACKSON HSL100 WELDING HELMET BLACK FIXED SHIELD NEW !!
$19.49
18# 309L /.045 Stainless Flux Core Mig wire NR
$39.00
HOBART WELDER HMC-410 CONTROLLER
$349.99
10 Radnor Mig Welding Contact Tips
$2.00
AUTODARK WELDING HELMET MASK used w mig wire tig welder
$5.50
Miller CST 280 Stick/TIG welding power source 907244
$2100.00
Esab Oxweld Argon Flow Meter
$5.00
Lincoln LN-25 Mig Welder
$600.00
New Lincoln Welder V275-S Model # 2269-1 w/Leads
$510.00
NEW WELDCRAFT WELDING TIG TORCH 80 AMP AIR COOL
$59.00
Miller
$1500.00
20# 308L /.045 Stainless Flux Core Mig wire NR
$39.00
NEW Oxy Acetylene Welding Cutting Torch Kit Fits Victor
$59.95
Thermal Dynamics Plasma cutting tips &electrodes NEW!!
$30.09
miller 250 ac-dc welder
$300.00
AUTODARK WELDING HELMET MASK used w mig wire tig welder
$19.50
Victor Portable Torch Outfit 0384-0936 New
$214.29
MILLER AUTOMATIC 1DA WELD CONTROL DIGITAL 1-DA WELDING
$279.99
Linde Mig Welder V1-253 /Power Supply /Type SWM 35 USED
$899.99
Anchor Ground Pure Tungsten Electrodes 1/16" x 7" *NEW*
$9.99
Arcos Alloys 87% Ni welding wire
$199.00
Underwater Welding Training Course On CD
$7.99
10 lbs CastIron Welding Nickel 99 Rod Stick Electrodes
$200.00
Firepower 1440-0215/1440-0216 ER70S-6 MIG Wire Solid
$22.95
smith torch rosebud MT603 heating tip oxy acetylene
$35.00
AUTODARK WELDING HELMET MASK for mig wire tig arc MAG
$24.99
VICTOR 0384-0839 SUPERRANGE II CUTTING & WELDING TORCH
$270.68
HOBART HANDLER 210 500526 MIG WELDER 230V WELD NEW
$854.68
HOBART 500505 HANDLER 140 W/ CART MIG WELDER
$546.71
6 Victor Style #2-1-101 Torch Burning Tips New
$6.00
LINCOLN ELECTRIC LN-25 WIRE FEEDER USED
$675.00
WELDING GOGGLES ~ SPECIAL NON FOG FLIP UP LENS ~ NEW!
$0.99
PHEONIX DRY ROD OVEN IN EXCELLENT CONDITION
$175.00
PANTOGRAPH PLASMA & OXY-FUEL SHAPE CUTTER MACHINE PLANS
$100.00
PowCon 300SM Welder w/ L-Tec Mig -35 Feeder on Cart
$750.00
LOT 2 SMITH LIFETIME CUTTING TORCH TORCHES SC179
$125.00
MSA SAFETY WORKS LIFT FRONT WELDER'S GOGGLES WELDING
$9.99
Lincoln LN-25 Mig Welder
$600.00
NWT Black Stallion Welding Jacket 2XL
$32.00
H & M Chain-Type Pipe Machine - FREE SHIPPING
$975.00
Cutting Torch Welding Oxygen Regulator Brass
$24.99
WELDING GLOVES, TILLMAN 1250L
$4.95
NATIONAL CYLINDER TRUCK GAS WELDING BOTTLE CART
$49.00
OXYGEN AND ACETYLENE TWIN WELDING HOSE 25 FT
$14.99
Hobart Welder 230amp Trailer Mounted
$4850.00
Big Heavy Duty Set of Oxy Acetylene Welding Regulators
$20.50
NEW MILLER 042120 EXTENSION CABLE 25 FOOT WELDER PARTS
$24.99
RED SKULL BANDANA WELDING CAP
$7.00
Welders Handbook How to Weld book Finch & Monroe 1985
$3.80
Miller CST 280 Stick/TIG welding power source 907244011
$2088.00
MILLER DIALARC 250 AC/DC WELDER
$685.00
Miller Spectrum 125 Plasma Cutter slightly used
$658.00
FLUX WIRE WELDER DUAL MIG 135 G GAS AND NO GAS 220V
$189.99
HARRIS STAY-SILV 5 BRAZING ALLOY 25 POUNDS NEW IN BOX!
$300.00
REGO Welding Regulator w/guage
$0.99