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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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K-T Industries 300 Amp Copper Ground Clamp Model 2-2230
$8.50
50' CAROL SUPER VU-TRON 600V LINCOLN WELDER CABLE 14PIN
$41.01
LINCOLN Electric PRO Core 125 MIG/Flux WELDER! NEW LooK
$255.00
Welding Cap Beanie Biker Doo Rag Hat Flowers!!
$6.00
Victor SR260A welding cutting acetylene regulator XLNT
$24.99
New Auto Darkening Lens Welding Helmet ProForge XF
$99.99
HEAVY DUTY Linde ACETYLENE regulator w/2 gauges
$5.00
HEAVY DUTY Linde oxygen regulator w/two gauges & wrench
$20.50
Mig / Tig / Arc /Plasma Cutter Welder Welding Cart 1438
$29.99
Lincoln LN-7 Wire Feeder / Lincoln DC-600 Welder
$800.00
Solar PWR Auto Darkening Welding Helmet for MIG TIG ARC
$52.00
NEW! NORTH FULL FACE WELDING ATTACHMENT MASK / #8405
$9.99
20 cf oxygen and 10 cf acetylene tanks (empty) new
$52.00
Victor GPN cutting tips size 00 - 2, 7 total welding
$20.00
.032 Niobium Wire 4 Welding Beading Piercing Jump Rings
$0.99
NEW Welding Helmet w/Flip Front Lens ~Comfortable~
$4.99
Miller Welder 3 phase with trolly hanging wire feed
$1500.00
INDUCTION HEATER, NEW 4kW, SOLID STATE
$2800.00
HD 100 AMP ARC WELDING MACHINE WELDER+ACCESSORIES
$39.99
NEW! MIG / TIG Welding Cart! LOW SHIPPING COSTS!!
$47.99
EVERLAST CUT60D 60AMP PLASMA CUTTER 110/220V CUT60 60A
$599.00
Miller 250 twin AC/DC arc welder 8-2346 D-587
$202.50
HDC Full Size Welding Helmet 4557
$4.99
WELDING CAPS,CAP LINERS
$5.00
Four New SureFire Cutting Tips
$10.00
Lincoln SP 135 Plus MIG Wirefeed Welder SP135 Tool 120v
$271.99
Lincoln Ideal Arc Mig Power Supply
$200.00
Victor type W-J welding tips (3) size 1, 2, 5 for J27
$15.00
MILLER TRAILBLAZER 301G 301 G WELDER GENERATOR
$2225.00
Safety Glasses Welding Lens 5.0 Buy 3 get 4th pair FREE
$5.99
ARC / TIG WELDER
$50.00
VICTOR TORCH 6-MPA Rosebud Oxy Acetylene
$11.50
StiloTig Tig Welding Tungsten Electrode Grinding Tool
$29.99
CENTURY 20 AMP DC PLASMA CUTTER # 118-009
$172.19
OXY ACETYLENE TORCH REGULATOR REGULATORS VICTOR HARRIS
$26.00
ELECTRIC LINCOLN WELD-PAK 100
$105.00
WELDAS Welding Welder Leather/Kevlar 14" Legging Spats
$5.24
Welding Cap Hard Hat Liner Beanie Checkered Flag
$6.00
Huntsman WELD HELMET w/ Auto View Lens
$49.99
Two SureFire 1/2" Swirl Flame Tips & Air Acetylene Hose
$10.00
Miller CP 302 MIG Welder NEW 200/230/460 V CP302
$305.00
2 Pr Ultra Premium Welder BBQ Glove Wood Stove $36
$7.49
SureFire Swirl Flame Tips and Torch Adapter - New
$10.00
Solar PWR Auto Darkening Welding Helmet for MIG TIG ARC
$40.25
Miller Welders Battery Operated 9"Wall Clock Dark Blue
$9.99
Miller 330 A/BP Welding Machine
$400.00
5.0 Welding Lens Safety Glasses-Buy 3 get 4th pair FREE
$5.99
harris torch combo
$90.00
AWSOME SKULLS WELDING CAP
$7.00
CT416D Plasma Cutter/Tig/Stick welder 110/240VAC DEAL
$300.00
FAST Auto Darkening Welding Helmet ANSI ~w/FLAMES!
$27.99
HELIARC WELDER 300 AMP MILLER 330A/B/SP AC DC
$499.00
Welders Plasma Cutter Cart (Mig, Tig, Arc Welding)+MORE
$24.99
Welding Helmet with Auto-Dark Glass
$30.00
SOLAR AUTO DARKENING WELDING GRINDING HELMET HOOD MASK
$59.95
NEW oxygen acetylene welding torch regulator fit Victor
$50.00
instructions for use solar auto darkening welding helme
$50.00
Harris Stay-Silv 15 Brazing Alloys
$900.00
Solar PWR Auto Darkening Welding Helmet for MIG TIG ARC
$31.00
NEW Oxy Acetylene Welding Cutting Torch Kit Fits Victor
$54.95
Safety Glasses-5.0 Welding Lens-Buy 3 get 4th pair FREE
$5.99
NATIONAL IGNITRON spot welder contact tube NL-5822A NIB
$49.99
115 VOLT ELECTRIC SPOT WELDER 1/8" METAL WELDING UNIT
$99.99
Victor Metalist Flow Meter & Hose
$39.95
235 pcs 30/40 A Consumable for Cutting Torch PT-31
$29.00
14KT YELLOW GOLD WELDING HELMET HOOD PENDANT
$164.95
US NAVY LEATHER WELDERS WELDING METAL WORKING GLOVES
$4.95
AUTODARK WELDING HELMET MASK for mig wire tig arc MAG
$24.99
LINCOLN IDEALARC R3S-325 CONSTANT VOLTAGE DC ARC WELDER
$587.00
NEW Oxy Acetylene Welding Cutting Torch Kit Fits Victor
$54.95
3 PC LEATHER WELDING APRON GLOVES & ROD HOLDER SET NEW
$19.99
MATCO (Snap-on) Car Body Panel MIG WELDER *nr!
$172.50
"NEW" LINCOLN PRO MIG 180 WIRE FEED WELDER "NEW"
$430.00
Stilotig Tig Welding Tungsten Electrode Sharpening Tool
$29.99
Welding Lead Cable Reels Lincoln Miller Victor Plasma
$350.00
Western Enterprise 111 oxy & 112 acetylene 'Y' w/valves
$9.99
190 pcs Air Plasma Cutter Consumables. Suit PT-31 Torch
$32.00
Brand New Solar Auto Darkening Welding Helmet #
$24.99
FLUX WIRE WELDER DUAL MIG 135 G GAS AND NO GAS 220V
$189.99
tig torch (nib)
$40.00
MILLER 30A SPOOLGUN/WIRE FEEDER #130831 NEW NEW NEW WOW
$779.99
Victor SR250C welding cutting oxygen regulator XLNT
$34.00
Clarke 95E 95 arc welder 110 volt WE6490
$36.00
CYLINDER CART for large oxy & medium fuel gas cylinders
$59.00
NEW DUAL-GUARD HD-300T OXYACETYLENE KIT
$179.99
NEW RAMSOND 50 A PLASMA CUTTER 180 AMP TIG 160 MMA ARC
$680.00
SOLAR AUTO DARKENING WELDING HELMET HOOD MASK ARC MIG F
$54.95
Lincoln Electric Pro 100 Mig Flux Core Wire Welder 115V
$179.50
TORCH GAUGE
$15.00
New cutting welding torch set with new tips Victor
$76.00
oxygen &acetylene gagues
$45.00
Marvel Schebler Carburetor for Lincoln Welder
$80.01
Krystal Welder Supply Salinas California Tape Measure
$3.95
Lincoln Electric Welder Pro Core 125 Mig New in box
$212.50
RED AND WHITE DICE ON BLACK WELDING CAP
$7.00
INDUSTRIAL GRADE AA WELDING GLOVES FLANNEL LINING
$0.99
TRACK CUTTER BURNER CUTTER PLASMA OXYGEN ACETYLENE
$510.09
Miller portable spot welder 8-2202 D-590
$271.00
2 Tig Welder Tungsten Electrode Grinder Rotator Tools
$54.99
NEW Solar Power Auto Darkening Welding Helmet ANSI 1814
$24.99