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GAS NITRIDING [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 1985-05-16

English

Subject field(s)
  • Furnaces and Ovens (Metallurgy)
CONT

A typical nitriding installation using ammonia consists of a reservoir of ammonia, a furnace, a retort containing the parts to be case hardened, and equipment to control the temperature and gas flow.

OBS

Nitriding: surface hardening of steel by formation of nitrides; nitrogen is introduced into the steel usually by heating in gaseous ammonia.

French

Domaine(s)
  • Fours (Métallurgie)
OBS

Après le temps voulu pour la nitruration, le four est abandonné au refroidissement naturel toujours sous courant gazeux et le défournement a lieu à froid.

OBS

Nitruration : Traitement thermochimique conduisant à la formation de nitrure(s), ayant souvent pour but le durcissement superficiel des pièces traitées.

OBS

Voir figure 98 dans TECHN.

Spanish

Save record 1

Record 2 1985-05-14

English

Subject field(s)
  • Heat Treatment of Metals
  • Surface Treatment of Metals
  • Steel
CONT

Liquid nitriding(nitriding in a molten salt bath) employs the same temperature range as gas nitriding-that is, 950 ° to 1050 ° F. As in liquid carburizing and cyaniding, the case hardening medium is molten cyanide. Unlike liquid carburizing and cyaniding, however, liquid nitriding is done below, instead of above, the transformation temperature range of the steel being treated. Also, liquid nitriding adds more nitrogen and less carbon to the steel than do cyaniding and carburizing in cyanide baths.

French

Domaine(s)
  • Traitement à chaud des métaux
  • Traitements de surface des métaux
  • Acier
DEF

Procédé de nitruration en bain de sels appliqué notamment à des pièces en acier au carbone ou faiblement allié, ayant pour objet la formation d'une couche de combinaison favorable à la tenue à l'usure et au frottement.

Spanish

Save record 2

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