Vacuum carburizing method and device, and carburized products

Details Vacuum carburizing method and device, and carburized products Vacuum carburizing method and device, and carburized products

C - Chemistry, Metallurgy

23

C

C23C 8/22 (2006.01)

Patent

CA 2215897

A method of carburizing works by vacuum-heating a work in a heating chamber of a vacuum carburizing furnace, supplying acetylene gas from a carburizing gas source to the heating chamber, and keeping the inside of the heating chamber in a vacuum of 1kPa or below by means of an evacuation source. It is thus possible to carburize uniformly every parts of the work including inner walls of deep recesses thereof while preventing soot generation and to save the quantity of use of gas and heat.

La présente invention concerne un procédé de cémentation de pièces par chauffage sous vide dans une chambre de chauffage d'un four de cémentation sous vide, fourniture d'acétylène par une source de gaz de cémentation à la chambre de chauffage et maintien de l'intérieur de cette chambre sous un vide de 1 kPa ou moins grâce à un moyen de faire le vide. Il est ainsi possible de cémenter uniformément toutes les parties de la pièce, y compris les parois intérieures de creux profonds, tout en empêchant la production de suie, et d'économiser du gaz et de la chaleur.

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