what is welding (technically)?

Answer 1

Welding is the joining of two pieces of metal using intense heat and a filler material to produce a strong, usable bond.

Answer 2

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, 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 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.

Answer 3

Welding is just one of the metal joining process in manufacturing, resulting in permanent joints. Welding means to melt the two pieces of metal or by applying pressure to the two pieces to be joined.
In manufacturing, welding is very commonly used as it is light (no need for bolts and nuts), allows easy production of protptypes, cheap and it does not disrupt the materials' stress-flow design (as only the areas near the weld suffer a change in microstructure)
However, it is highly dependent on human workmanship, clean surface and very importantly, it is very difficult to predict how stron a welded joints will be. Hence, in applications such as the aircraft body, engineers would prefer to glue the pieces together instead of welding it.

Answer 4

Fusing and joining one piece of metal to another
is called welding. This is of immense use in
all metal fabrication work where nuts and bolts
are not involved. You see the huge pipe line work
in an an refinery and those in a factory incuding the
automobile industry or ship-building. This is an inevitable
technology in huge construction work, too.

Presently, the following welding technologies
are in predominant use:

Arc welding
Gas welding
Tig welding
Mig welding

Further, this has great scope in securing a job at home or abroad - or setting up a small scale frabrication unit, provided one is enterprising.

Answer 5

Also known as gas fusion welding. A metal-joining process that uses the heat generated by a combination of oxygen and a fuel gas to melt two similar metals so they flow together and are integrally joined when cooled. This melting actually forms a puddle of molten metal. When the puddle cools, the repaired area should be as strong as the parent metal

Answer 6

weld1 (wld) Pronunciation Key
v. weld·ed, weld·ing, welds
v. tr.
To join (metals) by applying heat, sometimes with pressure and sometimes with an intermediate or filler metal having a high melting point.
To bring into close association or union.

v. intr.
To be capable of being welded.

n.
The union of two metal parts by welding.
The joint formed by welding.

welding
n : fastening two pieces of metal together by softening with heat and applying pressure

Answer 7

welding is the process in which under high heat metal is melted and then the metal surfaces are fused together. In welding hydrogen gas is utilized.when hydrogen gas is passed through an electric arc,its molecules split into atoms.when these atoms combine again to form a molecule ,an enormous heat is released .then this heat is utilized.

Answer 8

Welding is joining two metal pieces to one like joining two sticks with glue. In welding Oxyacetaline flame is used . The temperature of this flame is so high that it melts the two ends of metal rods and when both ends melt sudden cooling will make two rods to to solidify and get united.

Answer 9

there are many different types and techniques of welding, but very basically it is the bonding of two or more pieces of metal by using heat to melt the base metal causing a molecular bond between the two. this is way over simplified.

Answer 10

Welding is joining of two pieces of similar or dissimilar materials by taking both of them to fusion temperature and pour almost similar metal or alloy (matching by proper selection) at the same temperature so that one gets almost continuity in the metal structure in the joint.