Crossword clues for welding
Longman Dictionary of Contemporary English
The Collaborative International Dictionary
Weld \Weld\, v. t. [imp. & p. p. Welded; p. pr. & vb. n. Welding.] [Probably originally the same word as well to spring up, to gush; perhaps from the Scand.; cf. Sw. v["a]lla to weld, uppv["a]lla to boil up, to spring up, Dan. v[ae]lde to gush, G. wellen to weld. See Well to spring.]
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To press or beat into intimate and permanent union, as two pieces of iron when heated almost to fusion.
Note: Very few of the metals, besides iron and platinum. are capable of being welded. Horn and tortoise shell possess this useful property.
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Fig.: To unite closely or intimately.
Two women faster welded in one love.
--Tennyson.
Wiktionary
n. The action or process of weld#Verb. vb. (present participle of weld English)
WordNet
n. fastening two pieces of metal together by softening with heat and applying pressure
Wikipedia
Welding is a fabrication or sculptural process that joins materials, usually metals or thermoplastics, by causing fusion, which is distinct from lower temperature metal-joining techniques such as brazing and soldering, which do not melt the base metal. In addition to melting the base metal, a filler material is often added to the joint to form a pool of molten material (the weld pool) that cools to form a joint that can be as strong, or even stronger, than the base material. Pressure may also be used in conjunction with heat, or by itself, to produce a weld.
Although less common, there are also solid state welding processes such as friction welding or shielded active gas welding in which metal does not melt.
Some of the best known welding methods include:
- Shielded metal arc welding (SMAW) – also known as "stick welding or electric welding", uses an electrode that has flux around it to protect the weld puddle. The electrode holder holds the electrode as it slowly melts away. Slag protects the weld puddle from atmospheric contamination.
- Gas tungsten arc welding (GTAW) – also known as TIG (tungsten, inert gas), uses a non-consumable tungsten electrode to produce the weld. The weld area is protected from atmospheric contamination by an inert shielding gas such as argon or helium.
- Gas metal arc welding (GMAW) – commonly termed MIG (metal, inert gas), uses a wire feeding gun that feeds wire at an adjustable speed and flows an argon-based shielding gas or a mix of argon and carbon dioxide (CO) over the weld puddle to protect it from atmospheric contamination.
- Flux-cored arc welding (FCAW) – almost identical to MIG welding except it uses a special tubular wire filled with flux; it can be used with or without shielding gas, depending on the filler.
- Submerged arc welding (SAW) – uses an automatically fed consumable electrode and a blanket of granular fusible flux. The molten weld and the arc zone are protected from atmospheric contamination by being "submerged" under the flux blanket.
- Electroslag welding (ESW) – a highly productive, single pass welding process for thicker materials between 1 inch (25 mm) and 12 inches (300 mm) in a vertical or close to vertical position.
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 may be performed in many different environments, including in open air, under water, and in outer space. Welding is a hazardous undertaking and precautions are required to avoid burns, electric shock, vision damage, inhalation of poisonous gases and fumes, and exposure to intense ultraviolet radiation.
Until the end of the 19th century, the only welding process was forge welding, which blacksmiths had used for centuries to join iron and steel by heating and hammering. Arc welding and oxyfuel welding were among the first processes to develop late in the century, and electric resistance welding followed soon after. Welding technology advanced quickly during the early 20th century as the world wars drove the demand for reliable and inexpensive joining methods. Following the wars, several modern welding techniques were developed, including manual methods like SMAW, now one of the most popular welding methods, as well as semi-automatic and automatic processes such as GMAW, SAW, FCAW and ESW. Developments continued with the invention of laser beam welding, electron beam welding, magnetic pulse welding (MPW), and friction stir welding in the latter half of the century. Today, the science continues to advance. Robot welding is commonplace in industrial settings, and researchers continue to develop new welding methods and gain greater understanding of weld quality.
Usage examples of "welding".
Even her stepfather, who, since marrying her mother when Rachel was four, had worked his entire life at the welding job on the docks, earning barely enough to keep a roof over their heads and food on the table.
But with feudalism and the welding of the nation, tribal democracies passed away, leaving, however, in many places a valuable tradition of local self-government.
Dixon of Bothell, an apprentice ironworker, apparently became entangled in a welding lead and fell from the 43rd story of the new building, which is scheduled for completion late next year.
The scramjet tumbles in an uncontrolled dive, the spine of its overstressed airframe shattering, the pressurized cabin exploding along welding seams, breaking up a kilometer above the Pacific.
The velocity of the heavier car swung the Mercedes into a centrifugal tailspin, almost welding it to the side of the Mafia vehicle in another shattering impact.
He started examining the swords one at a time, testing them for balance and trueness, bending them to check the temper of the metal, examining the hilts and guards for sound welding.
She scanned its grey, panelled hull, looking for secondary fires, seeing only the piercing sparks of welding guns, the glow of beacons and the darting flares of hundreds of gravity-scows.
He drank a lot, guffawed a lot, and walked with a moderate limp, a piece of equipment having crushed his anklebone in the welding shop.
He looked across at the wall where some maintenance tools stood, a sledge-hammer, a crowbar, a three-foot fishplate spanner, and welding equipment.
But it was no more impossible than welding a water-pump shaft in its place or eliminating all friction from a frozen-tight motor so that it could be started again, or, say looking at a Geiger Counter and understanding how it worked without the least idea of what it could be used for.
My eyes roved quickly along the bench, noting the lathes, the racks of taps, boxes of dies, the turning tools, the jigs and the welding equipment.
Tony Ottavino has already secured the welding tools and signaled to Carello down on 50 to bring them down.
They passed a steady line of roustabouts packing up the paraphernalia into train cars, carrying rolls of thick ropes over their shoulders or slung between two men, iron bars and beams and collapsed sections of cages, welding equipment, and piles of other stuff Peter was too tired to identify.
Then he attacked the welding torch, the plaster sketches on the workbench, the Rodin cast and the Giacometti stickman Peterson had bought in Paris.
The one who remembered a Denise Watson was building a sculpture out of hubcaps, welding them together.