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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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3) WELDER MAGNETS 50lb METAL FAB MIG TIG TACK WELDING
$9.98
STRONG HAND ADJUST-O MAGNET SQUARE - MSA45 - NEW
$16.95
SPEEDGLAS 9000X OR 9002X CLEAR OUTSIDE LENS 04-0270-00
$12.95
TIGMASTER REGULATOR/FLOWMETER for Argon/CO2 - NEW
$39.95
TILLMAN 4124 Leather Waist Apron
$19.95
TILLMAN 6230R 30" 9 oz. RED Firestop Welding Jacket 2XL
$21.95
The Complete Welders Handbook on CD How To Weld Welding
$9.99
TILLMAN 3221-20L LEATHER CAPE SLEEVE & BIB - NEW
$41.95
Tillman 24C TIG Welding Gloves (2 Pair) (L)
$27.95
welding helmet snap on tig mig arc protection weld
$12.50
Tillman 6230 Firestop Welding Jacket 30" 9oz 2XL
$14.95
Tillman 2480A-L Chocolate Brown Welding Jacket
$77.95
TILLMAN 25B-XL Deerskin TIG Gloves (3 pair)
$27.95
Tillman 6230 Firestop Welding Jacket 30" 9oz 4XL
$17.95
Tillman 6230 Firestop Welding Jacket 30" 9oz 5XL
$19.95
VINTAGE HERCULES KEROSENE SUPER BLOW TORCH
$9.99
B (40CF) ACETYLENE WELDING GAS CYLINDER TANK
$79.87
Tillman 3830 Premium Leather Welding Jacket-L-NEW
$56.95
LINCOLN MAGNUM K530-5 100L 10 FT MIG GUN .023-.035
$129.87
Tillman 6230 Firestop Welding Jacket 30" 9oz MED
$13.95
Large Shrink Tube / Ideal for Welding Cable Repair
$22.20
STRONG HAND ADJUST-O MAGNET SQUARE - MSA48-HD - NEW
$25.95
TILLMAN 25B-S Deerskin TIG Gloves (3 pair)
$27.95
The Complete Welders Handbook on CD How To Weld Welding
$9.99
Tillman 24C TIG Welding Gloves (2 Pair) (M)
$27.95
TILLMAN 4230 Leather Apron
$24.95
Tillman 1414 M Top Grain Leather Driving Glove (3pair)
$19.95
Tillman 1350M Cowhide MIG Gloves-Medium - NEW
$8.95
TILLMAN 3280-2XL LEATHER WELDING JACKET-BOURBON - NEW
$44.95
Dual Voltage 50A plasma cutter Cut50D
$459.00
STRONG HAND ADJUST-O MAGNET SQUARE - MSA46-HD - NEW
$21.95
TILLMAN 521 Welders Tool Bag
$22.95
TILLMAN 5218 Bourbon Leather Sleeves
$21.95
TILLMAN 32 Heavy-Duty Pigskin TIG Gloves XL (3 PAIR)
$34.95
Victor CA2460 Heavy Duty Cutting Torch Attachment
$74.99
STEINER DELUXE WELDING GLOVES - 2 PAIR - RED
$21.95
Lincoln Welders Pair Fantasy Hot Red Holgraphic Flames
$6.99
TILLMAN 6230R 30" 9 oz. RED Firestop Welding Jacket LG
$19.95
Tillman 1414 XXL Top Grain Leather Driving Glove (3pr)
$21.95
TILLMAN 850L ELK Welders Gloves (1 pair)
$16.95
ARONSON WELDING TURNING ROLLS w/ IDLER FOR WELDER
$550.00
SPEEDGLAS 9000X OR 9002X CLEAR INSIDE LENS 04-0280-00
$5.00
TILLMAN 25B-L Deerskin TIG Gloves (3 pair)
$27.95
- Tweco A-532 Electrode Holder 200 amps - Qty 2 -
$23.95
STRONG HAND ADJUST-O MAGNET SQUARE - MSA47 - NEW
$20.95
Tillman 1250XL Cowhide MIG Gloves- XL - NEW
$9.95
WELDING SECRETS BOOK - HELMET/RODS
$29.95
SMALL MIG WELDER UTILITY CART LINCOLN K2275-1 NEW
$99.87
TILLMAN 1100 Premium Blue Welding Gloves - 1 PR
$7.95
Tillman 6' x 8' Heavy Duty Welding Blanket - NEW
$69.95
TILLMAN 6230R 30" 9 oz. RED Firestop Welding Jacket 3XL
$23.95
Tillman 6230C CAMO Firestop Welding Jacket -XL- NEW
$19.95
Miller Electric Welders White 4" Diecut Welding Decal
$0.99
Tillman 750 MED Top Grain Elk Welding Gloves
$13.95
Tillman 750 LG Top Grain Elk Welding Gloves
$13.95
2pc Magnetic Welding Ground Clamp TIG MIG Arc Stick Cut
$16.99
TILLMAN 6236 Firestop Welding Apron
$5.95
STRONG HAND ADJUST-O DUAL SWITCH MAGNET SQUARE - MS2-90
$109.95
TILLMAN 6230R 30" 9 oz. RED Firestop Welding Jacket SM
$19.95
Smith Gas Saver Weldit Gasaver W-101 Model E, Like NEW!
$42.00
MILLER 195605 M-10 10 FT MIG GUN FOR MM135 OR 175 NEW
$136.87
TILLMAN 25B-M Deerskin TIG Gloves (3 pair)
$27.95
Tillman 1300 TIG Welding Gloves LG (3 pair)
$19.95
Tillman 1350S Cowhide MIG Gloves-Small - NEW
$8.95
Tillman 6230 Firestop Welding Jacket 30" 9oz XL
$13.95
AUTODARK WELDING HELMET MASK for mig wire tig arc MAG
$24.99
WELDING SECRETS BOOK - MIG/TIG/OXY/ARC MACHINE WELDER
$29.95
Tillman 6230 Firestop Welding Jacket 30" 9oz 3XL
$15.95
Welding & Cutting Kit - VICTOR Compatible
$36.00
Tillman 1414 LG Top Grain Leather Driving Glove (3pair)
$19.95
Tillman 6230C CAMO Firestop Welding Jacket -L- NEW
$19.95
TILLMAN 5330 Brown Chaps (Apron)
$37.95
TILLMAN 6218 Welding Sleeves (6pair)
$30.95
250 A AMP THERMAL CONTROL / FAN COOLED ARC WELDER 250A
$99.99
TILLMAN 495 Pigskin Welding Gloves LG (2 pair)
$29.95
TILLMAN 3221-20XL LEATHER CAPE SLEEVE & BIB - NEW
$41.95
TILLMAN 6230R 30" 9 oz. RED Firestop Welding Jacket XL
$19.95
Tillman 2480A-XL Chocolate Brown Welding Jacket
$77.95
LOT OF 9: 25LB ARROW WELDING MAGNETS WELDER SUPPLY NEW
$10.35
MOTOR GUARD PLASMA AIR FILTER for most brands NEW
$117.87
TILLMAN 820BHP High Heat Aluminized Gloves (1PR)
$29.95
TILLMAN 32 Heavy-Duty Pigskin TIG Gloves LG (3 PAIR)
$34.95
TILLMAN 520 Welders Gear & Helmet Bag
$19.95
Tillman 1350L Cowhide MIG Gloves- Large - NEW
$8.95
Tillman 6' x 6' Heavy Duty Welding Blanket - NEW
$49.95
Tillman 24C TIG Welding Gloves (2 Pair) (XL)
$27.95
Tillman 1250L Cowhide MIG Gloves- Large - NEW
$10.95
Miller MIG Welding Trigger Switch 227798 M#110/115/120
$7.99
Tillman 750 SM Top Grain Elk Welding Gloves
$13.95
MILLER 300425 ECONOMY SMALL MIG OR PLASMA CART
$93.87
TILLMAN 6248 Firestop Welding Apron 24" x 48"
$9.95
TILLMAN 495 Pigskin Welding Gloves M (2 pair)
$29.95
Tillman 6230 Firestop Welding Jacket 30" 9oz SM
$13.95
Tillman 6230 Firestop Welding Jacket 30" 9oz LG
$13.95
NEW Oxy Acetylene Welding Cutting Torch Kit Fits Victor
$59.95
Tillman 750 2XL Top Grain Elk Welding Gloves
$19.95
Tillman 1414 XL Top Grain Leather Driving Glove (3pair)
$19.95
TILLMAN 32 Heavy-Duty Pigskin TIG Gloves MED (3 PAIR)
$34.95
5 TORCH TIPS METAL WELDING GAS CUTTING OXYGEN PROPANE
$35.99