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Welding > Introduction -
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Introduction -
Welding is a fabrication process that joins materials, usually metals or
thermoplastics, by causing coalescence. This is often done by melting
the work pieces and adding a filler material to form a pool of molten
material (the weld puddle) that cools to become a strong joint, but
sometimes pressure is 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 work pieces
to form a bond between them, without melting the work pieces.
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 during the 1800s, 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 and flux-cored arc 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.
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TWI (The Welding
Institute) - Materials Joining Technology Home
Page
Industry organization with database on welding
processes, properties of welded joints,
weldability Welding, soldering, and brazing
workers Like arc welding, soldering and brazing
use molten metal to join two pieces of Most jobs
for welding, soldering, and brazing machine
setters, operators, ...
www.bls.gov
Welding.Com - welding,
equipment, supply, jobs, mig, tig ...
Welding.Com is the B2B e-commerce Web site for
welding and related processes, and service to
the industry with info and links to related
sites and news of Hobart Institute of Welding
Technology (HIWT) - Welding School Committed to
helping individuals develop marketable welding
skills through quality training at minimum cost.
www.welding.org
Tig Welding, Mig
Welding, Arc Welding Procedures and Welding ...
Providing welding procedure development, welding
technigue for tig, mig, and other welding
processes for aluminum, stainless steel and
other alloys. Edison Welding Institute A
non-profit engineering and technology resource
organization serving the welding and joining
needs Welding - Wikipedia, the free encyclopedia
To supply the electrical energy necessary for
arc welding processes, Consumable electrode
processes such as shielded metal arc welding and
gas metal arc ...
en.wikipedia.org
Welding and Joining
Resources: Types of Welding, History and ...
Explore Welding and Joining Resources with links
to welding directories, types of welding,
welding standards, welding certification,
welding schools, welding, equipment, supply, mig,
tig Welding.Com is the B2B e-commerce Web site
for welding and related processes, and service
to the industry with info and links to related
sites and news of ...
www.welding.com
MIG welding tips and
resources
A comprehensive collection of Arc Welding
suppliers and applications information for the
metalworking and manufacturing industries,
including Technical Welding Tips
Welding Tips. by Tom Carrington and Herb. "Has
anybody done "stick welding" on VW's? If yes
what current would you use?" Tom Carrington
writes: Norco Welding How-To's Below we have
compiled a collection of helpful Tips.
Arc-Welding Fundamentals ... Preventative
Maintenance Tips for Welding Equipment ...
www.norco-inc.com
Millerwelds - TIG
Welding Tips - Intro
TIG Welding Tips In TIG welding, a tungsten
electrode heats the metal you are welding and
gas (most commonly Argon) protects the weld
puddle from Millerwelds - Stick Welding Tips
Stick Welding Tips. Always read and follow the
safety precautions and operational instructions
in your owner's manual. ...
www.millerwelds.com |
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