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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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6 torch tips (new)
$0.99
SNAP ON MM 250 SL MIG WELDER - NO RESERVE
$510.00
RAMSOND CUT 50 DX A 50A AMP AMP INVERTER PLASMA CUTTER
$310.00
MILLER 140
$349.99
Riland Plasma Cutter Consumables tips electrodes L-Tek
$6.00
Hughes HCD 125 Welder Power Supply VTA-61 Weld Head
$895.00
Lincoln Electric Pro Mig 140 welder 110v
$305.00
LINCOLN K664-2 ALUMINUM WELDING KIT - NEW buySAFE
$53.95
Leather Welding Jacket and Apron Size L
$19.99
Auto-Darkening WELDING HELMET Shade 9-13 Welder NEW
$19.99
TURBO TORCH G-4 Acetylene Torch Handle
$39.00
Riland Plasma Cutter Consumables tips electrodes L-Tek
$6.00
new hobart 250 plasma cutter. in the box
$625.00
1917 ELECTRIC WELDING Wilson Welder TRADE Catalog DC/AC
$17.13
WELDING HELMET AUTO DARKENING MIG TIG ARC GAS WELDERS 7
$11.51
Auto Darkening Solar Power Welding/Grinding Helmet
$89.95
HD PRO 135 AMP FLUX MIG MAG WELDER TWECO COMPATIBLE NEW
$229.99
NEW VICTOR HEATING NOZZLE # 10 TIP
$25.00
1 PAIR FLEX TUFF RUBBER GRIP GLOVES SIZE LARGE
$1.00
Spool Gun for Miller, Comparc, Thermal Arc, 25ft (NEW)
$731.57
NEW Miller Spoolmate 3035 3545 Spool Gun n Box 20ft NR
$312.00
Cyclone Pneumatic 50' 1/4" Dual-Hose Twin Welding Reel
$139.99
AUTODARK WELDING HELMET MASK used w mig wire tig welder
$5.50
2 Tig Welder Tungsten Electrode Grinder Rotator Tools
$54.99
Welding Hat Hard Hat Liner Chef Cap Dots On Black
$7.00
TURBO TORCH X-5B Air Acetylene Torch Kit
$155.00
2 Pr Ultra Premium Welder BBQ Glove Wood Stove $36
$6.99
250 Amps Inverter Mig Welder
$699.99
GOSS GA-3L Acetylene Torch Tip Solders 1" Self Igniting
$39.75
GOSS GA-3L Acetylene Torch Tip Solders 1" Self Igniting
$39.75
NEW! NORTH FULL FACE WELDING ATTACHMENT MASK / #8405
$9.99
GOSS GA-3L Acetylene Torch Tip Solders 1" Self Igniting
$39.75
3 lb. 15% SILVER SOLDER BRAZING ROD SILVALOY WOLVERINE
$91.00
ParkerMP 200amp ACDC TIG/STICK (Square-wave!) COMPLETE!
$899.99
MIG Gun, 500A 15ft, Lincoln, Miller, Euro
$166.70
ParkerMP 40A Plasma Cutter DUAL-VOLTAGE! FootPedalReady
$499.99
NEW LINCOLN ELECTRIC 175 HD WELD PAK MIG WELDER 175HD
$450.00
Therm-X 258A Portable Small Welder
$174.99
AUTODARK WELDING HELMET MASK used w mig wire tig welder
$10.50
NEW OXY ACETYLENE WELDING CUTTING TORCH KIT FITS VICTOR
$94.99
Uniweld RVT80 Acetylene Series Regulator~XC!!!
$185.00
TEC TORCH WELDING CABLE COVER LEATHER 24'
$5.00
3M SPEEDGLAS HELMET 9002D ADF SH10/11 04-0012-15 -NEW
$229.95
OXY ACETYLENE CUTTING TIP. OLD & USED BUT APPEARS OK.
$2.22
Cyclone Pneumatic 25' Foot 1/4" Dual-Hose Welding Reel
$99.99
TURBO TORCH G-4 Acetylene Torch Handle
$39.00
Victor Oxygen & Acetylene Regulators Set of Gauges
$31.75
Riland Plasma Cutter Consumables tips electrodes L-Tek
$6.00
WIRE FEED WELDING WIRE MILD STEEL FLUX UNIFLEX V90
$19.95
Spool Gun for Miller, Comparc, Thermal Arc, 50ft (NEW)
$822.32
NEW UNIWELD WURKS-A GAS WELDING Oxyacetylene Outfit
$149.99
3M HORNELL SPEEDGLAS SL AUTO-DK WELD HELMET 05-0013-41
$247.95
$150 Lot of 6 - Full Size WELDING HELMETS W/ Flip Front
$7.00
FLAME SOLAR POWERED AUTO DARKENING WELDING HELMET ARC
$38.55
ParkerMP 30A Plasma Cutter/125A TIG/Stick
$499.99
NEW PREST-O-LITE X-4B B TANK AIR GAS SWIRLJET KIT
$119.99
Aluminum alloy welding wire
$39.00
NEW AUTODARK WELDER HELMET MASK for mig wire tig arc
$24.99
Victor Motorized Hand Torch MHT-100
$187.85
NEW 1/4x25' CUTTING TORCH TWIN LINE WELDING WELD HOSE
$13.99
New 110 115 120 Volt Portable Spot Welder Welding 1/8
$149.99
MECO WELDING TIPS 11 TOTAL BRAND NEW
$7.95
TURBO TORCH X-5B Air Acetylene Torch Kit
$155.00
CT-520 3in1 PLASMA CUTTER TIG STICK ARC WELDER 120/220V
$624.99
Riland Plasma Cutter Consumables tips electrodes Cut40D
$6.00
Cyclone Pneumatic 100' 1/4" Dual-Hose Twin Welding Reel
$219.99
NEW Auto Darkening Welding Helmet ANSI Solar Powered
$29.98
PLASTIC Welder WELDING KITw/ 55 FAIRING PLASTIC ABS PVC
$36.99
Sarge's Pancake Welding Hood, Pipeline, Shield, L/Rhand
$98.99
Smith MC Straight Line and Circle Cutting Guide ,USA
$42.00
Airco Welding Torch Set
$36.00
Snap on MIG 125 welder with cart. BRAND NEW
$255.00
Multiquip GAW180HE Welder, Arc 180-189 AMP
$999.00
Certanium 707 Welding Rods 1/8" High Strength
$16.19
DALLAS COWBOYS WELDERS HAT CAP WELDING BIKERS
$5.50
Smith MT610 Oxy Acetylene Rosebud Torch Tip Head
$15.50
Multiquip GAW180HE Arc Welder 180-189 AMP
$850.00
Linemaster Hercules No. 531-SWHOX Duty Foot Switch
$149.99
VICTOR CUTTING TORCH
$79.00
StiloTig Tig Welding Tungsten Electrode Grinding Tool
$29.99
GOSS GA-3L Acetylene Torch Tip Solders 1" Self Igniting
$39.75
Riland Plasma Cutter Consumables tips electrodes L-Tek
$6.00
New 100 A Amp 100A ARC Electric Welding Machine Welder
$45.99
All Purpose Double Palm Gloves Medium (Durable Cowhide)
$1.67
Stilotig Tig Welding Tungsten Electrode Sharpening Tool
$29.99
FAST RESPONSE AUTO DARKENING SOLAR POWER WELDING HELMET
$49.99
GOSS GA-3L Acetylene Torch Tip Solders 1" Self Igniting
$39.75
Blade Welder , Dayton , 240VAC 4.2 KVA 1/2" - 3/4"
$400.00
NEW Oxy Acetylene Welding Cutting Torch Kit Fits Victor
$59.95
LINCOLN ELECTRIC/HARRIS KH656 GAS CUTTING &WELDING NEW
$120.00
Purox Straight Line and Circle Cutting Guide ,USA
$42.00
MIG Gun, 500A 12ft, Lincoln, Miller, Euro
$158.07
Riland Plasma Cutter Consumables tips electrodes L-Tek
$6.00
Astro Deluxe Welding Cart Fits Most 70-150 Amp Welders
$54.99
HARRIS TYPE ACETYLENE GAS OXY WELDING TORCH CUTTING KIT
$87.99
Dockson C-5 Oxy Acetylene Cutting Torch Head
$8.00
UNITEK WELDER 250 WATT WELDING POWER SUPPLY / FREE SHIP
$499.00
NEW WELDING MASK / HELMET WITH AUTO-DARKENING + FREE
$79.99
3) WELDER MAGNETS 50lb METAL FAB MIG TIG TACK WELDING
$9.98
torch
$50.99