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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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MIG wire, 2 - 0.035 x 12 lb rolls, ER70S-6

$43.60
Radnor auto darkening welding helment

$20.00
Contact tips, 000-069 (0.045) 25 pk.

$12.50
Lenco "High Tong" 250 amp electrode holder HT-2

$16.00
JW Harris 1/8"x36 TIG Wire 5356 Aluminum Alloy, 10lbs.

$45.20
Victor ST1600 Cutting Torch

$150.00
MIG contact tips, Bernard style, 7490 (.045), 10 pack

$5.50
MIG wire, 2 - 0.023 x 12 lb rolls, ER70S-6

$48.20
5 pack MIG nozzles, Bernard style 4392 (1/2" oriface)

$22.50
Miller Digital Elite Auto-Dark Helmet - Stars & Stripes

$296.92
Victor 315 Cutting Torch

$200.00
SignTorch CNC Trucker Girl Laser Sharp Vector Graphics

$15.00
Lenco MIG-300 welding clamp new MIG TIG Arc Quick cnnct

$7.04
MIG contact tips, Tweco, 14-45, 10 pack

$4.25
Miller XR Edge 30A Gun - lot of 3

$3200.00
Welding helmet magnifier, 2x4, 1.75 diopter, glass

$7.00
5 pack MIG nozzles, Bernard style 4491 (3/4" oriface)

$24.50
Victor ST1600 Cutting Torch

$150.00
MIG wire, 0.030 x 12 lb roll, ER70S-6, copper coated

$22.80
Victor SR 450 D Guage

$85.00
Victor SR 450 D Guage

$85.00
MIG contact tips, Tweco, 14-30, 10 pack

$4.25
50 ft 1/0 Welding Cable, connectors, ground, holder

$172.50
MIG contact tips, Bernard style, 7489 (.035), 25 pack

$12.25
Made in USA, 1/0 Welding Cable, 50 foot box

$123.50
LINCOLN WELDER CARB. KIT NEW MOTOR " F-163"

$0.99
MIG wire, 2 - 0.030 x 12 lb rolls, ER70S-6

$45.80
2 MC12-0 Cutting Torch Tips Fits Smith New Low Ship

$13.99
MIG wire, 0.023 x 12 lb roll, ER70S-6, copper coated

$24.45
Used Dust Hog Unit, portable dust collector

$500.00
350 amp TIG Torch 25', valve, water cooled

$155.89
VICTOR 24" CUTTING TORCH with OXYGEN & ACETYLENE GAGES

$124.99
Lenco ground clamp 300 amp LPG-300

$20.50
Lenco ground clamp 200 amp LPG-200

$18.50
hobart handler 210

$569.00
Contact tips, 000-067 (0.030) 25 pk.

$12.50
ThermalArc Arcmaster 185 ACDC TIG/Stick Pkg

$2275.00
MIG contact tips, Tweco style, 11-35, 25 pack

$9.25
MIG contact tips, Bernard style, 7490 (.045), 25 pack

$12.25
MIG contact tips, Bernard style, 7489 (.035), 10 pack

$5.50
Mig Tig Stick Arc Steel Aluminum Weld Welder Manual CD

$0.01
Miller MP-65

$0.99
MILLER MOG-200 WELDER ARC TIG WELDING GRIDS DC 195 AMP

$395.00
Welding helmet magnifier, 2x4, 2.0 diopter, glass

$7.00
Cable Connector set , Lenco , Medium duty LC-40

$13.50
snap on plasma cutter 120 volt plasma 25

$750.00
Victor CA2460 Cutting Torch

$200.00
Weldmark 70S-6 Copper Coated MIG Wire .023" 2# Spool

$14.20
5 pack MIG nozzles, Bernard style 4492 (9/16" oriface)

$24.50
AUTO DARK WELDING HELMET MASK WITH SOLAR POWER CELL V-3

$36.99
MIG nozzles (5) for Miller MIG gun, 169-725 (5/8")

$37.00
Victor SR 450 D Guage

$85.00
Welding helmet magnifier, 2x4, 2.25 diopter, glass

$7.00
Auto-Helm Pro-Series Auto-Darkening Welding Helmets New

$59.99
3 WELDER MAGNETS 50lb METAL FAB MIG TIG TACK WELDING

$5.83
Motor Guard plasma cutter air filter

$80.00
2-3 PIECE SET PLASMA CUTTER ELECTRODE KIT

$15.99
* MigTig Stick Steel Aluminum * Welding Welder CDbook

$0.89
Master Craft New 115 Volt Stick Welder - Free Shipping

$75.00
50 ft 2/0 Welding Cable, connectors, ground, holder

$217.50
TUNGSTEN ELECTRODE GRINDER

$198.00
Used Welder with welding rods

$22.50
Uniweld 780A Cutting Torch

$175.00
MIG nozzles (5) for Miller MIG gun, 169-724 (1/2")

$37.00
Weldmark Leather Cape Sleeve - X-Large, New!!!

$46.00
Hobart Auto - Darkening XTV Welding Helmet - Black 3D

$110.00
MIG wire, 0.035 x 12 lb roll, ER70S-6, copper coated

$22.35
PRIMUS S3366 SIEVER MATIC LP GAS WELDING TORCH SYSTEM

$65.00
5 LP Propane Cutting Torch Tips GPN-5 FITS VICTOR New!

$24.95
BodyGlove Safety Specs, Polarized Brown Lens

$40.25
Motor Guard air filter replacement elements (4 pk)

$28.00
500AMP Arc Welding Electrode Holder - New

$3.99
10" Bessey Clamp Welding Sliding Clamp

$79.99
40 Amp Plasma cutter w/ extra comsumables

$345.00
Lenco 250 amp electrode holder AF-2 (flat style)

$18.00
NEW 220 VOLT 130 TIG/90ARC WELDER INVERTER

$239.99
E-Z CUTTING GUIDE Torch attachment accessory cn

$10.95
Hypertherm 380 plasma cutter

$470.50
Long Forcing Cone Reamer 20 Gauge

$49.99
Marquette 130 Amp Mig Welder Gas or No Gas New!

$339.95
Cable Connector set , Lenco , Light/Medium duty LC-10

$12.50
Contact tips, 000-068 (0.035) 10pc.

$6.00
Flux Core MIG wire, 0.035 x 10 lb roll, ER71T-GS

$44.00
Made in USA, Size #1 Welding Cable, 50 foot box

$97.50
Lenco 300-350 amp electrode holder AF-3 (flat style)

$20.00
Mig Tig Stick Steel * Aluminum Welding Welder Manual CD

$0.01
Starmax Water Welder, Torch, Polisher, WO-100 1000W

$103.50
MIG nozzles (5) for Miller MIG gun, 169-726 (5/8")

$37.00
Unique 3 phase Build a Transformer Converter & Welder

$22.00
DUAL GAS GASLESS FLUX WIRE WELDER 220 VOLT MIG 151

$199.99
MIG contact tips, Tweco, 14-35, 10 pack

$4.25
Made in USA, 2/0 Welding Cable, 50 foot box

$152.50
Trailer Plans on CD, Build Your Own Trailers

$15.95
Victor ST1600 Cutting Torch

$150.00
5 pack MIG nozzles, Bernard style 4391 (5/8" oriface)

$22.50
Lincoln 225 welder (Pick up in Huntington Beach only)

$65.00
MIG contact tips, Tweco style, 14-35, 25 pack

$9.25
MIG contact tips, Tweco style, 11-35, 10 pack

$3.50
Victor ST1600 Cutting Torch

$150.00