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Manufacturing & Metalworking

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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ESAB CIRCLE & STRAIGHT PLASMA CUT GUIDE KIT 0558003258
$286.87
MILLER 041908 METER KIT
$45.00
Miller Syncrowave 250 Welder -- TIG & Stick Welder !!!
$1000.00
135AMP Flux Mig Argon GAS Welder Tweco Compatible
$249.99
miller xmt/dynasty cooling fan
$40.00
JW Harris 1lb 3/64" (.047) MIG Wire 4043 Aluminum Alloy
$10.69
AUTODARK WELDING HELMET MASK for mig wire tig arc MAG
$24.99
SILVER OPTREL SATELITE WELDING HELMET UVEX K602
$265.87
Hammer-On Welding Cable Lug Crimper Battery Cables New
$14.95
AUTODARK WELDING HELMET MASK for mig wire tig arc MAG
$24.99
OXYGEN ACETYLENE TORCH AND GAUGE SET
$41.00
JW Harris 1/8"x36 TIG Wire 5356 Aluminum Alloy, 10lbs.
$45.20
Mig Tig Stick Steel n Aluminum Welding Welder Manual CD
$5.99
220V MIG MAG GAS / NO GAS WELDING MACHINE Flux Welder
$189.99
Miller Spectrum 375 Plasma Cutter
$680.00
Lincoln control board G3521-1
$20.00
Standard ARC mild steel welding wire 45 lbs dia. 0350
$119.95
MILLER WIRE WELDER WITH A M/W SPOOL FEEDER
$300.00
ARC160 DC INVERTER MMA MACHINE & JASIC'S welder
$187.00
40A Plasma Cutter Consumables for PT-31 common 210 pcs
$58.00
500 Amp Lenco Style EG-500 Ground Clamp Economy
$17.48
ESAB 36228 KIT, CURRENT CONTROL
$226.87
Miller pipepro Meter/control pc board
$50.00
Wholesale (12) 4" Paint Chip Brush Brushes NEW
$17.89
90 AMP FLUX CORE WIRE MIG WELDER FREE WELDING CART
$159.99
Miller Elite Auto-Darkening Helmet - The Joker
$264.29
ARC WELDER 100 Amp 110V NEW
$59.95
Multi-Purpose MIG Pliers, Weldmark Tool
$18.54
Lincoln Electric Weld Pak 100 Wire Feed Welder 110V
$149.99
Millermatic 251 Wire welder and accessories
$1600.00
Eutectic Powdered Metal for Spray Torch
$10.50
Auto Darkening Welding & Grinding Plasma Helmet +RED
$59.99
100' 6 gauge AWG WELDING CABLE BLACK MADE IN USA
$49.49
CORNWELL 230 VOLT PLASMA CUTTER 30 AMP *NR*
$356.00
LINCOLN K2621-1 ADVANCED CONTROL PANEL
$270.87
12 AWG copper XHHW-2 XLPE pink 100' GAS OIL RESISTANT
$5.00
Tillman 31202X 20" Leather Bib for use with 32212X
$11.07
WELDING LEADS, 50' CABLE, HOLDER, GRD CLAMP
$227.87
100' 6 gauge AWG WELDING CABLE RED MADE IN USA
$49.49
Harris oxygen Regulator
$9.99
MILLER SGA 100C CONTROL W/CONTACTOR 043857
$281.77
110V Mig CO2 Gas Welding Flux Welder 120AMP or No gas
$199.99
CT-312 TIG+MMA+air plasma cutter 3 in 1 Welder, ABS
$396.00
Heavy Duty Welding Leather Tool Shop Apron
$15.95
Glove Season Leather Palm Knit Wr Gloves 12
$6.95
Tillman 42 Mig Welding Glove ( MEDIUM )
$9.95
Millermatic 140 MIG Welder, MIL 907311, New!!
$641.87
100' SOOW SO 14/3 CABLE PORTABLE INDOOR/OUTDOOR WIRE
$20.00
110V ELECTRIC SPOT WELDER 1/8" METAL STUD WELDING NEW
$92.99
TIG torch consumables for WP-17 18 26 & QQ300 52 PCS
$56.00
Ironclad Heatworx 600 Welding Gloves Iron Clad
$45.95
Campbell Hausfeld 115 Volt Wire Feed Welder
$130.00
ARCAIR ARC GOUGING ELECTRODE HOLDER
$56.00
NEW CG-30-I GAS CUTTING MACHINE - TORCH TRACK BURNER
$699.00
Miller S-22A Wire Feeder
$380.00
Weldmark Leather Cape Sleeve - X-Large, New!!!
$46.00
Spot Welder, NEW 10 KVA 12" Sheet metal, Spotwelder, NR
$995.00
Harris dual flow regulator model 356 ar/he
$75.00
MIG FLUX WELDER ETL Approved NEW
$149.95
WELDING HELMET AUTO DARKENING MIG TIG ARC GAS WELDERS 7
$32.00
OXWELD 150FG HEATINGATTACHMENT
$40.00
Radnor Tungsten Electrodes 2% Thoriated 1/16 x 7, SEVEN
$9.99
L-TEC PCM-100 Plasma cutter and welding system
$499.00
MILLER WC-24 WELD CONTROL 137549
$255.00
south weld tig torch pkg.
$41.00
Weldit 2 3/8" Metal Pipe Cutting Guide 45 & 22.5 Degree
$9.99
FULL CAN 10 POUNDS AIRCO 375 1/8TH WELDING RODS CAST
$18.18
LC-40M Weld Cable Connector Male #1/0 - #2/0
$11.44
TWECO M415-3545 MIG GUN MILLER REAR END 15' 400 AMP
$279.87
WELDSALE WS-3 ER70S-3 COPPER COATED MIG WIRE
$35.00
welding nozzle
$4.25
12 AWG copper XHHW-2 XLPE BLACK 100' GAS OIL RESISTANT
$5.00
LINCOLN K870 FOOT CONTROL FOR TIG WELDER
$268.87
Spoolmate 3035 and SGA 100 Controller
$575.00
NEW 2 PC WELDING MAGNET KIT FOR ARC MIG TIG WELDER
$3.03
GE K3 DC MOTOR NEW IN BOX 5cd123ue001b 1.5HP 180V
$799.99
Spot Welder Unitek
$500.00
2PC 25' CUTTING TORCH TWIN LINE WELDING WELD HOSE 1/4"
$22.45
FlUx MIG WELDER 131 CO2 GAS / NO GAS WELDING Machine
$188.88
40A Plasma Cutter Consumables for PT-31 common 235 pcs
$58.90
Miller CP302 Mig Welder w/ Cart, Feeder and Wire - XMAS
$1650.00
30 Western Oxy-Acetylene 1/4" Welding Hose Ferrules New
$11.99
MILLER DELTA WELDER
$200.00
MILLER RFCS-14 HD FOOT AMP & CONTACTOR CONTROL 194744
$242.77
TIG -200P TIG /MMA 2 in 1 pulse function & JASIC welder
$438.00
Leister Triac S Hand Held Hot Air Welder Heat Gun 120V
$495.00
AUTODARK WELDING HELMET MASK for mig wire tig arc MAG
$24.99
WELDSALE WS-3 ER70S-3 MIG WIRE
$30.00
MILLER RFCS-6M FOOT AMP & CNTCR CONTROL 195183
$237.87
UNIWELD PORTABLE WELDING TORCH KIT
$175.00
ER316/316L STAINLESS MIG WIRE .045 X 25# SPOOL
$246.00
Welding Helmet Auto Dark Before the Arc, Chin-Operated
$75.00
NEW! 300 AMP JACKSON ELECTRODE HOLDER.
$6.99
3) WELDER MAGNETS 50lb METAL FAB MIG TIG TACK WELDING
$9.98
(24) Paint Roller Cover Covers 1/4 Nap USA
$19.95
American Forge Safety Welding Goggles Flip Down
$6.49
Victor oxygen regulator with gauges
$4.99
ARC WELDING by LINCOLN ELECTRIC Co hc Illus
$2.99