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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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23 Victor & Unknown Mfg Contact Tips & Torch Tips
$46.00
10000 watt lincoln welder twin cylinder kohler motor
$3750.00
MILLERMATIC 252 951066 MIG WELDER WITH 30A SPOOLGUN NEW
$3259.79
Bernard Model 3500 SS - 3 gal Water Cooler - Welding
$212.50
Victor RC250 Series O2/Acetyl. Reg. Combo 0387-0211
$136.79
Auto-Helm Pro-Series Auto-Darkening Welding Helmets New
$79.00
40 DC Inverter Plasma Cutter 220 volts Digital Display
$349.99
Radnor 24"x36" Protective Welding Bib Apron NEW!
$9.52
BSX BM50 2X-Large Raptor Mig Hi-Flex Welding Gloves
$17.95
LINCOLN WELDER, SOUTH BEND METAL LATHE, THREAD-O-MATIC
$960.00
Cutskill RC350-125-540 Series O2 Regulator 0387-2300
$90.79
Victor Cutskill LP Gas Cutting Tip #0-3-GPN
$7.90
18 Pairs of Kevlar Protective Gloves NR!
$6.75
NEW Auto Darkening Welding Helmet ANSI Solar Powered
$29.98
3in1 TIG Stick Welder Plasma Cutter CT-312 Cuts 1-8mm
$349.99
Lincoln Welder Embroidered Iron-On Uniform/Hat Patch
$1.99
2) 11 POUND SPOOLS ER70S-6 WIRE .023 ER70S6 MIG WELDER
$31.00
Lincoln WeldanPower 225 Welder & Standby Generator
$250.50
Lot of 2 Hobart Stick Electrodes 1/8" 5lb NR!
$10.01
VICTOR 0384-2020 JOURNEYMAN II CUTTING & WELDING TORCH
$390.20
New Oxy / Acetylene Welding and Cutting Torch Kit 1224
$49.99
Therm Oweld #65
$10.00
LINCOLN K2604-2 VISTA 3000 NASCAR AUTO WELDING HELMET
$262.79
Radnor Aluminum Mig welding wire
$9.99
Lincoln Electric 125 HD Welder BRAND NEW
$148.49
Lot of 2 Cobra Welding Helmets-Masks NR!
$113.39
CT-416 Plasma Cutter TIG MMA Welder 220 volts
$449.99
1 Pound of Messer MG 1/8” Welding Rod MG 360
$9.99
Tillman Tig Mig Leather Welding Gloves 24CL Large
$4.99
Auto Darken Welding Helmet / Mask Solar Power Arc, Mig
$29.98
3 Tweco WeldSkill Positive-Cam Cable Connectors NR!
$20.50
2GA Welding Cable
$130.00
Meco 21" Cutmaster Welding Cutting Torch ~New in Box
$11.00
NEW GIANTTECH INVERTER PLASMA CUTTER Cut50D 50 AMP
$399.00
Box of 50 TECHNIWELD Polycabonate Safety Plates L4SP NR
$22.72
Cadweld Weld Material
$10.00
Tillman 24"x36" Protective Welding Bib Apron NEW!
$6.05
New Longevity LS-160P Plasma/Arc/Tig Welder (SUPER160)
$1295.00
5 prints of bikers hats
$30.00
Brand New Victor Medalist Oxygen Regulator, Model SR560
$9.99
Miller coolmate 4 115 volt
$199.00
ANY SOLID COLOR WELDING CAP
$7.00
Radnor 18" Protective Welding Sleeves NEW!
$7.11
CT-520D 3in1 50 AMP PLASMA CUTTER 200 A TIG ARC WELDER
$625.00
SMITH HEAVY DUTY DUAL GUARD TORCH PROPANE HD-510LPT
$430.40
Jackson Welding Helmet W/ ArcOne Singles 240 Lens
$26.79
SMITH ACETYLENE REGULATOR NEW B TANK CGA 520 30-15-520
$84.30
6 Radnor 164 #1 Airco Style Acetylene Cutting Tips
$2.50
4 COMPLETE SETS OF 8 GENERATOR BRUSHES SA-200 LINCOLN
$88.50
5 prints of bikers hats
$30.00
BSX BS50 Medium Vulcan Mig Stick Red Flame Weld Gloves
$19.25
States CNC Plasma Mill Router Laser CAD CAM DXF ART
$11.00
Auto Darken Welding Helmet / Mask Solar Power Arc, Mig
$29.97
Smith Non Dual-Guard Heavy Duty Torch Kit SC-510T
$418.79
Pipe Cutting Bevel Machine EXCELLENT Condition w/ torch
$390.00
CT-518 Plasma Cutter TIG MMA Welder 220 Volts
$599.99
BSX BXTN9C 3XL Khaki Fire Resistant Welding Jacket
$21.55
BSX BM50 Large Raptor Mig Hi-Flex Welding Gloves
$17.95
Lincoln AC 225 Arc/Stick Welder
$107.50
Lincoln Arc Welder SA-200-162 M-8803 Alum Control Plate
$56.99
Lincoln K870 foot control
$199.00
Cutskill RC350-80-540 Series O2 Regulator 0387-2302
$90.79
12 lbs ProStar Premium MIG Welding Wire .023" NR!
$12.27
CT-520 3in1 PLASMA CUTTER TIG STICK ARC WELDER 120/220V
$624.99
NEW Oxy Acetylene Welding Cutting Torch Kit Fits Victor
$59.95
RAMSOND CUT 50 DX A 50A AMP AMP INVERTER PLASMA CUTTER
$227.51
Radnor 30" Protective Welding Jacket NEW!
$13.07
TWECO A-532 200 AMP ELECTRODE HOLDER
$4.99
LINCOLN SA-200 THERMO REVITUP NEW NEVER USED
$41.00
10 ft x 20 ft Silver Canopy Kit! SHADE!
$59.99
Acetylene Tank - Used - 40 cubic ft - Air Gas
$42.00
CARBON ARC WELDING RODS NR
$25.00
Wilson Spectra Orange Transparent Welding Curtain NR!
$22.20
Victor Cutskill LP Gas Cutting Tip #000-3-GPN
$7.90
BSX BX21CS 3XL Black Cape Sleeves with Red Flames
$19.89
50' CUTTING TORCH OXY ACETYLENE TWIN WELDING HOSE 1/4"
$19.99
NEW WELDCRAFT 12.5' FT WELDING HOSES 40V64 TORCHES
$49.00
MIG 220 GAS WELDER
$155.00
MILLER BOBCAT 250 DIESEL ENGINE DRIVE WELDER 907213
$7369.79
SPOOL OF 308 TYPE STAINLESS STEEL SIZE .030
$30.00
NEW LINCOLN PORT-A-TORCH PORTABLE WELDER
$228.50
Tillman Tig Mig Leather Welding Gloves 24CM Medium
$4.99
SMITH SOLDERING BRAZING GAS SAVER CUTTING TORCH WDW101
$148.20
NICE LEATHER WELDING SLEEVES AND CAPE
$15.94
SA-200 FAIRBANKS MORSE MAGNETO L-2677
$56.00
BSX BS50 Large Vulcan Mig Stick Red Flame Weld Gloves
$19.25
BSX BXRB9C 3XL Blue with Blue Flames Welding Jacket
$25.69
2) 11 POUND SPOOLS ER70S-6 WIRE .035 ER70S6 MIG WELDER
$27.00
Tillman 24"x36" Protective Welding Bib Apron NEW!
$5.02
FAIRBANKS MORSE MAGNETO FOR LINCOLN SA-200
$56.00
125 CU FT ARGON NITROGEN HELIUM CYLINDER TANK BOTTLE
$279.95
Radnor 30" Protective Welding Jacket NEW!
$15.51
HDC Full Size Welding Helmet with Lens & Filter 4557
$4.99
Miller Millermatic 140 Mig Wire Feed Welder Portable NR
$435.00
Tweco 600 amp mig gun
$250.00
Victor Cutskill LP Gas Cutting Tip #2-1-GPN
$7.90
WELDING POSITIONER / MANIPULATOR 2000LB weld ARONSON
$350.00
Lot of 2 US FORGE Replacement Welding Handles 08020 NR
$22.03