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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A generic term covering several processes applicable to steel that change the chemical composition of the surface layer by absorption of carbon, nitrogen, or a mixture of the two and, by diffusion, create a concentration gradient.  1, record 1, English, - case%20hardening

Record number: 1, Textual support number: 1 OBS

The processes commonly used are carburizing and quench hardening; cyaniding; nitriding; and carbonitriding. The use of the applicable specific process name is preferred.  1, record 1, English, - case%20hardening

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Durcissement d’un alliage ferreux de telle sorte que la couche superficielle soit rendue substantiellement plus dure que le cœur.  1, record 1, French, - durcissement%20superficiel

Record number: 1, Textual support number: 1 CONT

Les procédés typiques utilisés pour obtenir un durcissement superficiel sont la cémentation, la cyanuration, la carbonitruration, la nitruration, et le durcissement par trempe après chauffage superficiel par induction ou à la flamme.  1, record 1, French, - durcissement%20superficiel

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

A case hardening process in which a suitable ferrous material is heated above the lower transformation temperature in a gaseous atmosphere of such composition as to cause simultaneous absorption of carbon and nitrogen by the surface and, by diffusion, create a concentration gradient.  1, record 2, English, - carbonitriding

Record number: 2, Textual support number: 1 OBS

The process is completed by cooling at a rate that produces the desired properties in the workpiece.  1, record 2, English, - carbonitriding

Record number: 2, Textual support number: 2 OBS

gas cyaniding: a misnomer for carbonitriding.  1, record 2, English, - carbonitriding

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Traitement thermochimique auquel est soumis un alliage ferreux, le maintien à température étant réalisé en atmosphère convenable, pour obtenir un enrichissement superficiel en carbone et azote, éléments qui diffusent vers l’intérieur de la pièce.  2, record 2, French, - carbonitruration

Record number: 2, Textual support number: 1 OBS

Généralement cette opération est suivie d’un durcissement par trempe.  2, record 2, French, - carbonitruration

Record 2,  Textual support,  Spanish