Quench - définition. Qu'est-ce que Quench
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Qu'est-ce (qui) est Quench - définition

RAPID COOLING OF A WORKPIECE TO OBTAIN CERTAIN MATERIAL PROPERTIES
Quencher; Quenching temperature; Quenching Temperature; Quench Level; Quench level; Quenched; Quench

quench         
(quenches, quenching, quenched)
If someone who is thirsty quenches their thirst, they lose their thirst by having a drink.
He stopped to quench his thirst at a stream.
VERB: V n
Quench         
·vt To cool suddenly, as heated steel, in tempering.
II. Quench ·vi To become extinguished; to go out; to become calm or cool.
III. Quench ·vt To Extinguish; to Overwhelm; to make an end of;
- said of flame and fire, of things burning, and figuratively of sensations and emotions; as, to quench flame; to quench a candle; to quench thirst, love, hate, ·etc.
quench         
v. a.
1.
Extinguish, put out.
2.
Destroy, still, stifle, repress, check, suppress, put an end to.
3.
Allay, shake, cool, extinguish.

Wikipédia

Quenching

In materials science, quenching is the rapid cooling of a workpiece in water, oil, polymer, air, or other fluids to obtain certain material properties. A type of heat treating, quenching prevents undesired low-temperature processes, such as phase transformations, from occurring. It does this by reducing the window of time during which these undesired reactions are both thermodynamically favorable, and kinetically accessible; for instance, quenching can reduce the crystal grain size of both metallic and plastic materials, increasing their hardness.

In metallurgy, quenching is most commonly used to harden steel by inducing a martensite transformation, where the steel must be rapidly cooled through its eutectoid point, the temperature at which austenite becomes unstable. In steel alloyed with metals such as nickel and manganese, the eutectoid temperature becomes much lower, but the kinetic barriers to phase transformation remain the same. This allows quenching to start at a lower temperature, making the process much easier. High-speed steel also has added tungsten, which serves to raise kinetic barriers, which among other effects gives material properties (hardness and abrasion resistance) as though the workpiece had been cooled more rapidly than it really has. Even cooling such alloys slowly in air has most of the desired effects of quenching; high-speed steel weakens much less from heat cycling due to high-speed cutting.

Extremely rapid cooling can prevent the formation of all crystal structure, resulting in amorphous metal or "metallic glass".

Exemples du corpus de texte pour Quench
1. There are dances and chants, appeals for life–giving moisture to quench parched earth.
2. But the news didnt do much to quench a prevalent information thirst among members of SPLM.
3. Some will have no homes, no jobs to wake up for or no running water to quench their hangovers.
4. To quench the growing thirst for information about travel to distant places, Thomas Cook started his own newspaper – the Excursionist.
5. Since March, Saudi Arabia along with its Gulf colleagues has opened the taps to help quench booming demand.