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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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MESSER 4500 SERIES PLASMA BURNER/CUTTER

$3000.00
2 SC12-2 Cutting Torch Tip Fits Smith New Low Ship

$14.99
Weld It OxyAcetylene Torch Kit in Factory Box NIB

$125.00
NEW WESTERN 36" STAINLESS PIGTAIL/ TRANSFER TUBE

$19.99
NEW ESAB/ OXWELD CW-23 CUTTING HEAD FOR W-17 TORCH

$59.99
WELDING AND CUTTING MANUAL

$7.99
CT-416 Plasma Cutter TIG MMA Welder 220 volts

$499.99
HOBART EXCEL ARC 8065 CV WELDER

$1599.00
ATOM ARK WELDING RODS

$30.00
Welding Helmet Auto Dark Before the Arc, Chin-Operated

$75.00
LOT 6 NEW VICTOR WELDING NOZZLE CUTTING TORCH TIPS 2

$43.50
MIG Weld Gun Torch ZAP Thermacut Flow Meter Hose Cable?

$69.00
2Pr Gloves Premium Welders Torch LEATHER Work Kevlar Go

$4.99
National Positive Solar Carbon Arc Rod 16mm x 22 in

$96.00
MAC tools Plasma cutter Used 1 time!!

$560.00
WELDING HELMET AUTO DARKENING MIG TIG ARC GAS WELDERS 7

$21.01
Rexarc 3/4" Check Valve Oxygen, Acetylene, or LP NEW!

$12.99
Miller CP-200 Welder with Millermatic Wire Feed & wire

$199.00
PlasmaCAM Plasma Cutting Table

$8300.00
LARGE VICTOR CUTTING TORCH *****.99*****

$78.00
Autodark welding helmet mask w/ CE,ANSI,big view% 777

$59.99
NO RESERVE! Miller CP300 Power Supply Wire feed Welder

$101.00
THERMAL DYNAMICS CUTMASTER 82 PLASMA CUTTER 1-1130- 1

$1984.87
2 Book CD Welder Welding Lathe Mill Machinists Manuals

$0.01
HORNELL SPEEDGLAS 9002X AUTO WELDING HELMET 04-0012-21

$308.87
Stud Welder

$100.00
PARKER HOSE SS23CG-10 CGA TYPE III #E-7930 NR!

$6.05
Miller Electric Welder Fine Knit Skull Caps w/ Stripes

$12.99
BLUE OPTREL SATELITE AUTO WELDING HELMET BLUE K601 NEW

$256.87
Ultra Sonic Plastic Welder

$305.01
New! Industrial 40 Amp Dual Voltage Plasma Cutter -BLUE

$475.00
( 2 ) Miller Electric Welder BEANIE Hat Caps

$9.99
Auto Darkening Solar Welding Helmet Kit Gloves Clamps

$96.99
Autodark welding helmet mask w/ CE,ANSI,big view% 777

$59.99
Welding Electrical Cable Cutters Copper or Aluminum

$9.99
Sellstrom Auto-Darkening Titan Helmet Finish Line

$149.61
NEW 100 AMP 110V ARC WELDER SET.REG 250 220 A WELDING

$19.50
welder 16hp Onan cam gear

$0.99
Weld It Value Pack Welding Kit

$12.00
HOBART HANDLER 140 MIG WELDER new 500500 NEW

$471.77
MILLERMATIC DVI 2 MIG WELDER DVI-2 DVI2 907323

$1229.77
LOT 24 NEW MSA WELDING HELMET UNIVERSAL CAP ADAPTERS

$62.00
Miller Maxstar 150 STL DC TIG/Stick Welder

$918.95
Brand New Oxweld CW-23 Cutting Attachment 90 degree

$3.12
Auto Darking Lens with Solar Panel - FREE SHIPPING

$40.00
New Harris Miller Cutting Tips 1 Each 6290-1S/172027

$0.99
Welding Skull Pink Panther

$60.00
SMALL TRAVEL OXYGEN WELDING GAS TANK - SIZE 20

$24.99
NEW Solar Power Auto Darkening Welding Helmet ANSI

$24.99
HOBART ULTRA FLEX 350 PULSE WELDER POWER SOURCE

$1799.00
2 SC12-4 Cutting Torch Tip Fits Smith New Low Ship

$14.99
VICTOR WELDING GAUGE 0-4000

$3.99
3M HORNELL SPEEDGLAS SL AUTO-DK WELD HELMET 05-0013-41

$247.95
National Positive Carbon Arc Rod 7/16 x 22 in Threaded

$79.00
WELDCRAFT TIG TORCH LOT NEW / USED EC NR

$46.99
OXYGEN & ACETYLENE WELDING GAS TANK-CARRIER-SIZE 20&MC

$14.99
4 ESAB/OXWELD WELD HEADS FOR W-17 TORCH NEW!

$39.99
Hypertherm Max 200 Plasma Cutting Machine Hand Torch

$2950.00
BLACK OPTREL SATELITE WELDING HELMET BLACK UVEX K600

$256.87
Victor Pressure Regulator VTS 453D

$179.00
MILLER BOBCAT 250 WELDER GENERATOR 907212 OR 907211

$3209.77
10 Single Flint Strikers Cutting Torch Harris or Victor

$9.99
NEW Solar Power Auto Darkening Welding Helmet ANSI

$24.99
ESAB POWER CUT 875 PLASMA W/PT-32EH TORCH 0558002787

$2039.87
MILLER 195605 M-10 10 FT MIG GUN FOR MM135 OR 175 NEW

$136.87
Autodark welding helmet mask w/ CE,ANSI,big view% 777

$59.99
Oxy Acetylene Welding Cutting Torch Kit Fits Victor New

$54.99
Autodark welding helmet mask w/ CE,ANSI,big view% 777

$59.99
HOBART HANDLER 210 MIG WELDER 500526

$829.77
WELDING GOGGLES ~ SPECIAL NON FOG FLIP UP LENS ~ NEW!

$0.99
ESAB MIGMASTER 203 MIG WELDER PKG 0558005174

$1121.87
MILLER PERFORMANCE SERIES BLACK WELDING HELMET 232035

$185.77
MILLER PRO-HOBBY MILLERMATIC WELDING HELMET 231406

$142.77
Bead tourmaline 2.5x2mm faceted rondelle 16-inch strand

$13.00
Miller Welder / Generator

$1900.00
1/4" Alumina Nozzles for H16 & H35 Airco TIG Torches

$5.99
HOBART HANDLER 187 MIG WELDER W/CART 500527 NEW

$719.77
HOBART HANDLER 140 MIG WELDER WITH CART 500505 NEW

$530.77
NEW Solar Power Auto Darkening Welding Helmet ANSI

$24.99
3 Hobart® Welding Rod Holders w/ Dividers- New!

$19.99
Battery Cable Clamps Clamps Only No Cable or Wire NIB

$3.99
3M SPEEDGLAS HELMET 9002D ADF SH10/11 04-0012-15 -NEW

$229.95
VICTOR 0384-0839 SUPERRANGE II CUTTING & WELDING TORCH

$241.79
2 SC12-3 Cutting Torch Tip Fits Smith New Low Ship

$14.99
MSA Glass Fiber Welding Hood

$16.20
DENGENSHA Weld Scope WS-10M Resistance Weld Checker

$700.00
Weld It Value Pack Welding Kit

$10.00
Viva Tequila Jose Cuervo WELDING HAT American Hotties

$10.00
Bernard Miller Trigger Mig Gun - Brand New!

$89.99
5 PC 6" LOCKING C CLAMPS WITH PADS WELDING CLAMPS TOOLS

$9.99
LOT NEW AIR PRODUCTS WELDING NOZZLE TORCH TIPS

$35.00
WELDING GOGGLES ~ SPECIAL NON FOG FLIP UP LENS ~ NEW!

$0.99
Weldcraft WP-18 Tig torch

$99.00
MILLER CAMO ELITE AUTO DARKENING WELDING HOOD

$238.55
2 SC12-1 Cutting Torch Tip Fits Smith New Low Ship

$14.99
90 AMP Flux Wire Welder New in Retail Box with Warranty

$119.00
MILLER DIGITAL ELITE JOKER WELDING HELMET 235041

$296.87
WELDING HELMET AUTO DARKENING MIG TIG ARC GAS WELDERS 7

$11.51
LINCOLN LN-25 WIRE FEEDER

$660.00
LINCOLN POWER MIG 180C MIG WELDER PKG K2473-1 W/CART

$797.87