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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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MILLER DIALARC 250 WELDER

$330.00
TORCH KITS WELDING CUTTING TORCHES VICTOR COMPATIBLE

$69.99
MILLER 231404 PRO-HOBBY BLACK AUTO HELMET

$135.23
WELDA'S Welding Gloves Deersoft Flame Retardant NEW

$1.28
MILLER 232037 PERFORMANCE MILLERMATIC II AUTO HELMET

$209.78
LINCOLN POWER MIG 215XT MIG WELDER PKG K2700-1

$1553.87
NEW Oxy Acetylene Welding Cutting Torch Kit Fits Victor

$54.95
VOLT PLASMA CUTTER 40 AMP DUAL VOLTAGE ---- MUST SEE

$329.00
MIG 135G FLUX MIG MAG WELDER LINCOLN COMPATIBLE 110 V

$209.99
MILLER TRAILBLAZER 302 907216 WELDER GENERATOR W CABLES

$3944.79
Idle Down for 225 Welder

$9.99
MILLER 231406 PRO-HOBBY MILLERMATIC AUTO WELDING HELMET

$149.93
MILLER TRAILBLAZER 302 907216 WELDER GENERATOR KOHLER

$3724.43
MILLER 235041 THE JOKER DIGITAL ELITE WELDING HELMET

$311.63
MILLER 234761 INFERNO DIGITAL ELITE WELDING HELMET

$311.63
MILLER SPECTRUM 125C PLASMA CUTTER w/compressor 907149

$917.77
60lbs McKay Speed Alloy 125 Welding Wire 3/32" NEW NR

$13.77
ANTIQUE VINTAGE P&H WELDING HELMET

$14.99
HOBART 500527 HANDLER 187 MIG WELDER & RUNNING GEAR

$741.38
TILLMAN COTTON WELDERS JKT BLUE SZ X-LRG 6230BXL

$17.05
MILLER 907209 BOBCAT 225 WELDER GERNERATOR NEW KOHLER

$3069.18
MILLER UNIVERSAL CART & CYL RACK 042394

$309.87
MILLER MAXSTAR 150 S STICK WELDER WITH X-CASE 907134012

$862.77
JACKSON HELLRAISER HELMET W/NEX-GEN LENS 0744-1090 NEW

$282.87
US ARMY SYMBOLS REVERSABLE WELDER CAP CAPS HAT HATS

$5.50
VINTAGE SMITH'S WELDING CUTTING TORCH

$20.00
MILLERMATIC 212 951068 PKG MIG WELDER 230 VOLT SPOOLGUN

$2142.18
MILLER 234065 ELITE STARS & STRIPES AUTO WELDING HELMET

$266.48
MIG 135 G FLUX MIG MAG WELDER LINCOLN COMPATIBLE 220 V

$209.99
MILLER 234763 CLASSIC BLACK DIGITAL ELITE WELD HELMET

$286.43
LARGE FIRE PROOF WELDING BLANKET SHIELDING HEAVY DUTY

$49.99
MILLER RENEGADE 180 WELDER GENERATOR MIG 907395

$2337.77
WELDA'S Welding Gloves Comfoflex Flame Retardant NEW

$1.28
Esab mm-250 32851 commercial wire feed MIG welder 220v

$1199.00
MILLER 231407 PRO-HOBBY CAMOUFLAGE AUTO HELMET

$149.93
LARGE FIRE PROOF WELDING BLANKET SHIELDING HEAVY DUTY

$49.99
MILLER 903777012 SPECTRUM 2050 PLASMA CUTTER

$2312.79
3M 04-0012-21 SPEEDGLAS AUTO DARK 9002X HELMET WELDING

$324.23
VINTAGE PREST-O-LITE WELDING BRAZING TORCH

$20.00
Welder Bancroft Model 350 TIG CNC welding positioner

$10500.00
NEW TURBOTORCH AIR ACETYLENE TORCH KIT WELDING X-6MC

$159.99
CONCOA 8223186 CUTTING TORCH ATTACHMENT 21" 90 DEGREE

$46.00
Lincoln ~Auto Darkening Helmet KH606 ~NICE ~Brand New

$54.99
3M SPEEDGLAS 05-0013-41 AUTO-DARKENING HELMET WELD 8-1

$261.23
Miller Big40 DC Arc welder on trailer

$600.00
MILLER 300416 PREMIUM SMALL MIG OR PLASMA CART

$134.00
60lbs McKay Speed Alloy 125 Welding Wire 3/32" NEW NR

$74.99
MILLER 216323 RED FLAME ELITE AUTO DARK WELDING HELMET

$266.48
MILLER 234514 PERFORMANCE FIREBALL WELDING AUTO HELMET

$209.78
3 WELDER MAGNETS 50lb METAL FAB MIG TIG TACK WELDING

$5.83
MILLER 907308011 SYNCROWAVE 200 TIG RUNNER WELDER NEW

$2097.89
MILLER 232035 BLACK PERFORMANCE AUTO DARK HELMET BONUS

$196.13
LINCOLN POWER MIG 255XT MIG WELDER PKG K2701-1

$2083.87
HOBART HANDLER 210 500526 MIG WELDER 230V WELD NEW

$854.68
Mig Welding Gloves Large (Top Grain Pigskin)

$4.26
MILLER 227187 JOKER ELITE AUTO DARK WELDING HELMET

$251.78
MIG Welder Hobart Handler 180

$400.00
Miller Weld Oscillator Control Box

$99.00
25LBS Welding Wire Miller Millermatic Lincoln Welder NR

$24.99
MILLER 234762 STARS STRIPES DIGITAL ELITE WELD HELMET

$311.63
SILVER OPTREL SATELITE WELDING HELMET UVEX K602

$256.87
HOBART 500500 HANDLER 140 MIG WELDER 110 VOLT

$502.73
TILLMAN 9030 X-LARGE WE WELD AMERICA JACKET

$16.20
Miller Weld Oscillator Control Box

$99.00
ROTHENBERGER PRO PROPANE/ MAPP TORCH SET

$49.99
MARINES CORP SYMBOL REVERSABLE WELDER CAP HAT

$5.50
HOBART 195957 H-10 10 FT MIG GUN FOR HANDLER NEW

$137.77
Hobart Cyber Wave 300 Welder

$450.00
Welder Bancroft 500 MIG Rebuilt CNC welding positioner

$15750.00
MILLER 232039 MOTORSPORTS PERFORMANCE AUTO HELMET

$209.78
Auto Darkening Welding & Grinding Helmet Hood Mask+BLUE

$49.99
WELDA'S Welding Gloves Air Cushion Wide Body Kevlar NEW

$1.28
Welding Kit Helmet Gloves Magnet Clamp Chipping Hammer

$27.99
HOBART 500525 HANDLER 187 MIG WELDER

$666.19
115 V ELECTRIC SPOT WELDER 1/8 " METAL WELDING NEW

$95.99
WELDA'S Welding Gloves Air Cushion Wide Body Kevlar NEW

$5.50
Kevlar Thread Premium LEATHER Gloves WELDING Grill WORK

$9.99
WELDA'S Welding Gloves Deerskin Suede Cuff NEW

$1.28
Auto-Helm Pro-Series Auto-Darkening Welding Helmets New

$69.99
AUTODARK WELDING HELMET MASK for mig wire tig arc MAG

$24.99
60lbs McKay Speed Alloy 125 Welding Wire 3/32" NEW NR

$7.49
MILLER SPECTRUM 375 PLASMA CUTTER 903891 115 230 VOLT

$1122.48
MILLER 231408 PRO-HOBBY RED FLAME AUTO HELMET

$149.93
MILLER 232038 FIRE STORM PERFORMANCE AUTO HELMET

$209.78
MILLER 300425 ECONOMY SMALL MIG OR PLASMA CART

$94.87
Auto Darkening Welding & Grinding Helmet Hood Mask+BLUE

$49.99
MILLER 236340 VINTAGE USA DIGITAL ELITE WELDING HELMET

$311.63
MILLER MILLERMATIC 350P W/XR-ALUMA-PRO 25FT 907379

$5218.77
FAST RESPONSE AUTO DARKENING SOLAR POWER WELDING HELMET

$49.99
HOBART 500505 HANDLER 140 W/ CART MIG WELDER

$546.71
MILLER 222669 INFERNO ELITE AUTO DARK WELDING HELMET

$266.48
VICTOR 0384-0836 SUPERRANGE II CUTTING & WELDING TORCH

$243.38
MILLER 231405 PRO-HOBBY AMERICAN EAGLE AUTO HELMET NEW

$149.93
NEW 35KVA Spot Welder, Rocker Arm . 26" Throat. Warrty

$3495.00
MILLER 216322 BLACK ELITE AUTO DARK WELDING HELMET

$243.38
MILLER 227188 CAMOFLAUGE ELITE AUTO DARK WELDING HELMET

$266.48
WELDING HELMET AUTO DARKENING MIG TIG ARC GAS WELDERS

$11.49
LINCOLN RANGER 305G WELDER GENERATOR K1726-4

$3824.87
MILLER 232036 PERFORMANCE AMERICAN'S EAGLE AUTO HELMET

$209.78
MILLER 907149 SPECTRUM 125C PLASMA CUTTER NEW

$909.79