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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 SPECTRUM 375 X-TREME PLASMA CUTTER W/CASE 907339
$1189.79
Aluminum Welding Wire .030 dia. 5 spools - New!!!
$24.00
Uniweld Nitrogen Regulator Mfg# RHP400 New In The Box
$49.99
16 Argon Helium Nitrogen Argon/CO2 Mix CGA 580 Valves
$239.00
MILLER SPECTRUM 1251 907305-01-1 PLASMA CUTTER NEW
$3977.64
MILLERMATIC PASSPORT PLUS 907401 MIG WELDER NEW MODEL
$1494.31
1/8 Cast Iron Nickel 99 Rod Stick Electrodes 1 lb
$30.00
HTP Magnum 100 L Welding Gun - K530 - better than OEM!
$105.00
110V 165 AMP AC ARC WELDER WELDING MACHINE WELD 165AMP
$59.99
1 10 lb Roll ER70S-6 023" Steel MIG Welding Wire
$19.00
OPTREL K601 SATELLITE BLUE AUTO DARKENING HELMET BONUS
$292.50
1985 miller vintage welder
$300.00
5 Slag Slayer Chipping Hammer File Wire Brush New!
$19.99
MILLERMATIC 140 907335 MIG WELDER 110V AUTOSET NEW
$649.79
VICTOR 0384-0936 GENUINE PORTABLE TORCH CUTTING WELDING
$301.34
WELDING GOGGLES ~ SPECIAL NON FOG FLIP UP LENS ~ NEW!
$0.99
JW Harris 1lb 3/64" (.047) MIG Wire 5356 Aluminum Alloy
$10.93
MILLER TRAILBLAZER 302 907216 WELDER GENERATOR W CABLES
$3944.79
NEW Oxy Acetylene Welding Cutting Torch Kit Fits Victor
$59.95
3M 04-0012-21 SPEEDGLAS AUTO DARK 9002X HELMET WELDING
$313.79
WELDING GOGGLES ~ SPECIAL NON FOG FLIP UP LENS ~ NEW!
$0.99
10 Pack "Special" WELDING HAT Reversible SuperQuality
$59.95
Weldit 7014 5/32 Welding Rods 50 lbs. USA Made
$49.99
KT INDUSTRIES 300 AMP ARC WELD ELECTRODE HOLDER NIB
$7.99
MIG-100 FLUX CORE WELDING MACHINE NO GAS WELDER
$135.99
MILLERMATIC 180 907312011 MIG WELDER CART 230V AUTOSET
$839.79
Heating Cutting Welding Nozzles Kit Welder Tool NEW
$29.99
VICTOR CUTSKILL WELDING & CUTTING OUTFIT, MEDIUM DUTY
$199.00
MILLER 907255 BOBCAT 3 PHASE WELDER GENERATOR NEW
$3324.62
TANAKARAFTER Medium Duty Welding and Cutting Set
$99.99
NEW Oxy Acetylene Welding Cutting Torch Kit Fits Victor
$59.95
MILLERMATIC 140 907335011 MIG WELDER & CART WELD 110V
$747.56
MILLERMATIC 212 951068 PKG MIG WELDER 230 VOLT SPOOLGUN
$2142.18
OEM brand Oxygen Series regulator welding Good Cond
$25.00
SNAP ON YA217 TOTE MIG WIRE FEED MIG WELDER
$299.99
Welding caps Lot of 10 Varous sizes
$40.00
Miller Welders Bluestar 2E Rebel Flag Name Plate Decal
$19.99
MILLER BOBCAT 250 ENGINE DRIVE WELDER W/ CABLES 907211
$3579.79
Lincoln Electric ProMig WeldPak 140HD Welder NEW IN BOX
$256.00
MILLER 222670 MAPLE LEAF ELITE AUTO DARK WELDING HELMET
$263.79
Auto Darkening Welding & Grinding Helmet Hood Mask+BLUE
$49.99
Oxy Acetylene Gauge Set Airco Victor Regulator
$24.99
Miller Electric Welders 6" Historic Light Blue Decal
$2.99
3M SPEEDGLAS 05-0013-41 AUTO-DARKENING HELMET WELD 8-1
$261.23
UNITEK Thermocouple Welder T/C Near New NO RESERVE.
$760.00
FAST RESPONSE AUTO DARKENING SOLAR POWER WELDING HELMET
$49.99
Houston Astros Welding Beanie NEW,Reversable Handmade!!
$5.25
Devcon Fasmetal Putty 10780 Aluminum Repair .75 lb
$20.00
Oxygen/Acetylene Bottle Wrench
$2.99
MILLER SPECTRUM 625 PLASMA CUTTER 907058 NEW
$1644.79
3M 04-0014-10U SPEEDGLAS AUTO DARKENING UTILITY HELMET
$145.73
VICTOR CUTSKILL WELDING AND CUTTING 0384-2500 OUTFIT
$174.25
AUTODARK WELDING HELMET MASK for mig wire tig arc MAG
$24.99
MILLER TRAILBLAZER 302 907216 WELDER GENERATOR KOHLER
$3724.43
OPTREL K602 SATELLITE SILVER AUTO DARKENING HELMET
$292.50
.035 FLUX CORED WELDING WIRE-WELD W/OUT GAS -2#SPOOL -
$11.99
SMITH LITTLE TORCH WITH REGULATORS JEWELRY 23-1003
$281.35
Miller 20 KVA Spot Welder
$295.00
SMITH LITTLE TORCH WITH REGULATORS PROPANE 23-1003P
$281.35
SMITH LITTLE TORCH ACETYLENE "MC" JEWELER KIT 23-1004A
$468.25
110 Amp ARC Home Hobby Professional Welder Tool NEW
$85.50
10WR & 7WR Vise-Grip 2 Pc. Set Fast Release USA
$22.00
MILLER WELDING HOOD AUTO DARKENING ELITE SERIES #222669
$179.50
Welding cart for Acetylene + gauges and hoses
$20.00
MILLERMATIC 180 907312 MIG WELDER WELD 230V AUTOSET NEW
$773.79
Metals and how to Weld Them Arc Welding 1962
$3.99
Mastercraft Wire Feed Arc Welder (7641M) no accessories
$99.99
MILLER 907149 SPECTRUM 125C PLASMA CUTTER NEW
$909.79
NEW Solid Black Stylin' WELDING HAT Hats Cap Fitter
$9.00
.30" lincoln electric innershild core wire 1lb
$5.00
MILLER 903777012 SPECTRUM 2050 PLASMA CUTTER
$2312.79
MILLER SPECTRUM 375 PLASMA CUTTER 903891 115 230 VOLT
$1122.48
SMITH LITTLE TORCH 23-1001D JEWELER'S TORCH
$119.65
HTP Auto Darkening Welding Helmet w/Plasma Cut Feature
$74.95
Auto Darking Lens with Solar Panel - FREE SHIPPING
$40.00
VICTOR 0384-2009 JOURNEYMAN CUTTING & WELDING TORCH
$514.28
Miller Millermatic Challenger 172 MIG Wire Welder 320V
$202.50
VICTOR 0384-2020 JOURNEYMAN II CUTTING & WELDING TORCH
$390.38
FlUx MIG WELDER 131 CO2 GAS / NO GAS WELDING Machine
$188.88
160 AMP DC ARC TIG MMA WELDING WELDER IGBT INVERTER NEW
$299.99
Miller Welder Goldstar 302 3 phase welder
$500.00
SMITH TOUGHCUT WELDING & CUTTING TORCH KIT OUTFIT
$215.20
.030 FLUX CORED WELDING WIRE-WELD W/OUT GAS -2#SPOOL -
$11.99
MILLER MILLERMATIC 252 907321 MIG WELDER 230 VOLT NEW
$2008.28
ARCAIR K3000 ANGEL-ARC TORCH, MADE IN THE USA , ARCAIR
$247.00
MILLER MILLERMATIC DVI-2 907323 MIG WELDER 115 / 230 V
$1349.79
Lot of 53 New Victor 4-W-FS Welding Nozzle 3/16"- 1/4"
$5.50
The Complete Oxy-Acetylene Handbook Manual 1969
$4.99
MILLER BOBCAT 250 ENGINE DRIVE WELDER KOHLER 907211
$3399.79
MILLER MILLERMATIC 212 907324 MIG WELDER 230 VOLT NEW
$1544.78
Miller M-10 10ft wire feed Mig gun brand new (8) total
$81.00
MILLER 907209 BOBCAT 225 WELDER GERNERATOR NEW KOHLER
$2999.99
oxygen acetylene torches victor tank bottle cutting buy
$350.00
VICTOR CUTSKILL WELDING & CUTTING OUTFIT 0384-2600 HEAV
$230.95
MILLER SPECTRUM 1000 907162011 PLASMA CUTTER NEW
$2986.78
5/32 Cast Iron Nickel 99 Rod Stick Electrodes 1 lb
$30.00
THERMAL DYNAMICS CUTMASTER TRUE 52 PLASMA CUTTER
$1475.79
72"x96" Lewco Welding Blanket
$35.99
.030 FLUX CORED WELDING WIRE-WELD W/OUT GAS -2#SPOOL -
$11.99
Speedglas 9002x welding hood with adflo filter
$500.00