TERMIUM Plus®

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LIQUID CARBONITRIDING [1 record]

Record 1 1985-05-14

English

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

A case hardening process in which a ferrous material is heated above the lower transformation range in a molten salt containing cyanide to cause simultaneous absorption of carbon and nitrogen at the surface and, by diffusion, create a concentration gradient. Quench hardening completes the process.

OBS

A sodium cyanide mixture ... is generally used for cyaniding on a production basis. ... The inert salts, sodium chloride and sodium carbonate, are added to cyanide to provide fluidity and to control the melting points of all mixtures.

French

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

Céments liquides. Cyanuration. Le bain cémentant est constitué par un mélange à base de cyanure de sodium (20 %) et de carbonate de soude (70 %), qui est porté à la fusion dans un creuset à une température de 850 ° à 920 ° suivant la nature du bain et ses conditions de travail. Les pièces sont plongées dans ce bain et y sont maintenues pendant un temps variable selon l'épaisseur de cémentation désirée.

Spanish

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