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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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60lbs McKay Speed Alloy 125 Welding Wire 3/32" NEW NR
$22.00
NEW HOBART PORTABLE OXY. ACEYLENE TORCH SET - USA MADE
$235.00
10 Pack "Special" WELDING HAT Reversible SuperQuality
$59.95
Miller Elite Auto-Darkening Helmet - The Joker
$264.29
VICTOR PORTABLE TORCH KIT
$200.99
Miller 60M Microprocessor controlled wire feeder
$52.00
MOTOMAN/YASKAWA ROBOTIC ARCWORLD 1000 ARC WELDING CELL
$4500.00
Rexarc 3/4" Check Valve Oxygen, Acetylene, or LP NEW!
$12.99
Tig Welding Instructional Video / DVD by WELD PRO©
$29.95
JW Harris 1/16"x36 TIG Wire 5356 Aluminum Alloy, 10lbs.
$48.40
ELECTRIC FLUX WIRE WELDER MACHINE MIG 100 WELDING TOOLS
$109.99
Clarke Weld 95E 120V Arc Welder Kit, WE6490, NEW!!
$99.95
6 Welding Tank Wrenches 10 way Oxygen & Acetylene
$23.95
2 BESSEY MIGHTYMINI 4 & 8" BAR CLAMPS 660 lbs.
$34.99
AUTO DARK WELDING HELMET MASK WITH SOLAR POWER CELL 001
$39.99
Ironclad Heatworx 600 Welding Gloves Iron Clad
$45.95
Hobart Welder (Gas Regulator) Hobart Handler CGA580 NEW
$49.99
NEW Oxy Acetylene Welding Cutting Torch Kit Fits Victor
$59.95
Snap On 120V Mig Welder #: YA129B & Cart
$21.50
ANY SOLID COLOR WELDING CAP
$7.00
MIG FLUX WELDER ETL Approved NEW
$149.95
MILLER OPTIMA 300 WELDING WELDER / WIRE FEEDER CONTROL
$150.00
Miller Maxstar 150 STL Tig & Stick Welder W/ Case
$720.00
CENTURY MIG WELDER
$43.00
MILLER MAXSTAR 200DX
$1200.00
H & M Chain-Type Pipe Machine - FREE SHIPPING
$975.00
1916 Solid Brass Oxweld Acetylene Co Gauge
$9.99
3-in-1 50 AMPS PLASMA CUTTER 200 AMP TIG ARC WELDER
$819.99
Speedglas 9002x welding hood
$132.50
150 amp TIG Torch Flex Head 25', valve, 1-piece
$144.32
LINCOLN NA-5 WIREFEEDER / WELDER MULTI-PROCEDURE KIT
$200.00
THIS HANDMADE WELDING CAPS , WELDERS CAP!!!!!
$5.00
HOBART WELD-IT FLEXIBLE WELDING CABLE #2 25 FT. BULK
$55.00
5 Twin Welding Hose Nut & Nipple Sets 1/4" New!
$9.99
Welder, Fusion Welder Perfect For The Jewelry Industry
$975.00
Devilbiss Model EPR-405 5-Axis Robotic Welding Cell
$999.00
2 Book CD Welder Welding Lathe Mill Machinists Manuals
$0.89
50 FT OXYGEN AND ACETYLENE TWIN HOSE WELDING TOOLS
$22.99
Mig Tig Stick Steel n Aluminum Welding Welder Manual CD
$0.99
60lbs McKay Speed Alloy 125 Welding Wire 3/32" NEW NR
$0.99
VICTOR 0384-0938 CutSkill Tote w/o Cylinders Portable
$149.99
2Book CD Welder Welding Lathe Mill Machinists Manuals
$0.89
VAPER 90 AMP Flux Core Wire Feed Welder "NEW"
$129.99
8 Flat Soapstone Holder Marker for Torch Cutting
$9.99
LINCOLN NA-5 AUTOMATIC WIRE FEEDER / WELDER CONTROL
$450.00
WELDING HELMET AUTO DARKENING MIG TIG ARC GAS WELDERS
$0.01
Miller Arc Welders, Millermatic Historic 6" Decal ,NEW
$1.99
Mastercraft Wire Feed Arc Welder (7641M) W/GLOVES
$99.99
Thermal Arc Dragster 80 Welder Light Weight
$100.00
vintage leather shop apron
$12.00
Heating Cutting Welding Nozzles Kit Welder Tool NEW
$29.99
VICTOR 0384-0839 SUPERRANGE II CUTTING & WELDING TORCH
$270.68
S45 PLASMA CUTTING TORCH
$99.00
AIRCO (STYLE 80) H-D WELDING TORCH HANDLE + 10 NOZZLES
$19.99
LINCOLN SAE 400 WELDER GASOLINE 6 CYC NO RESERVE
$610.00
10 way Welding Tank Wrench for Oxygen & Acetylene
$3.99
NEW Oxy Acetylene Welding Cutting Torch Kit Fits Victor
$59.95
Miller 175 Millermatic Mig Wire Welder LOW RESERVE! ! !
$725.00
Weldit 7014 5/32 Welding Rods 50 lbs. USA Made
$49.99
AUTODARK WELDING HELMET MASK for mig wire tig arc MAG
$24.99
AUTO DARKENING LENS WELDING HELMET ARC MIG TIG WELDER F
$69.00
TurboTorch STK-99 Torch Kit EXTREME 0386-0851 NEW
$59.00
Welding Beanie Cap-- Breathable, Comfortable, Soft Top
$4.99
USED GAS GOLF CLEANER MACHINE
$6999.00
PVC Welding Kit, Plastic Welder Model 41592
$23.04
Brand New Long Cuff TILLMAN Welding Gloves
$9.99
2001 MILLER BIG BLUE 251D DIESEL WELDER
$1125.00
VICTOR MACHINE CUTTING OXY-ACETYLENE TORCH
$76.00
MILLER OPTIMA 300 WELDING WELDER / WIRE FEEDER CONTROL
$150.00
Gas Hose for Oxy Acetylene Tanks
$10.00
PRO 165AMP AC ARC WELDING MACHINE WELDER SOLDERING KIT
$79.99
Phoenix Industries Dryrod electrode oven
$400.00
1 10 lb Roll ER70S-6 .030" Steel MIG Welding Wire
$17.50
Mig Tig Stick Arc Steel Aluminum Weld Welder Manual CD
$0.89
Auto Darkening Welding & Grinding Helmet Hood Mask+BLUE
$49.99
snap-on welding helmet used one time
$15.00
Tregaskiss Welding touch gun liner
$5.00
Weld Gage-BridgeCam Gage(New)
$36.00
Oxy Acetylene Welding Cutting Torch Kit Fits Victor New
$59.99
3) WELDER MAGNETS 50lb METAL FAB MIG TIG TACK WELDING
$9.98
MAC Tools AntiZap Service Minder
$20.50
60lbs McKay Speed Alloy 125 Welding Wire 3/32" NEW NR
$0.99
LIGHTNING BUG WELD CUTTING TORCH LIGHTER
$9.99
HANDMADE WELDING CAPS , SMILEY
$5.00
Side Split Cowhide Standard Shoe Protectors
$14.99
Speedglas 9002x welding hood with adflo filter
$600.00
MILLER MAXSTAR 200DX
$1200.00
Brand New Long Cuff TILLMAN Welding Gloves
$9.99
Lincoln AC-225-S Variable Voltage AC Arc Welder-Used
$79.99
HOBART PREMIUM 6 PC OXY-ACETYLENE CUTTING/ WELDING KIT
$125.00
VICTOR VLDM 1000 SERIES GAS MANIFOLD SYSTEM GAS MIXER
$650.00
Miller Econotig TIG Aluminum Welder
$1200.00
Miller Bluestar 6000 Welder Generator ONLY 37 HOURS!!!
$1799.99
NEW Manifold fits Lincoln & Miller Welder Gas Engines
$109.99
2 Genuine Victor® Cutting Torch 5-W-1 Welding Tip New!
$24.99
VOLT PLASMA CUTTER 40 AMP DUAL VOLTAGE ---- MUST SEE
$399.00
LINCOLN ELECTRIC PRECISION TIG 225 WELDER K2535-1
$1100.00
Victor 6-MFA-J MultiFlame Heating Nozzle w/Torch Handle
$39.95
MILLER WELDER XMT 350
$2000.00