Global Patent Index - EP 0812929 B1

EP 0812929 B1 2000-01-05 - Process of nitriding and/or carbonitriding metallic workpieces

Title (en)

Process of nitriding and/or carbonitriding metallic workpieces

Title (de)

Verfahren zum Nitrieren und/oder Nitrocarburieren metallischer Werkstücke

Title (fr)

Procédé pour la nitruration et/ou carbonitruration de pièces métalliques

Publication

EP 0812929 B1 (DE)

Application

EP 96109451 A

Priority

EP 96109451 A

Abstract (en)

[origin: EP0812929A1] A process for gas nitriding or carbonitriding of an alloy steel workpiece (especially of corrosion resistant steel containing more than 13% Cr), in an ammonia-containing atmosphere, the workpiece is subjected to pre-carburising by supplying a dissociable carbon source, especially an alcohol, into the heated furnace prior to nitriding or carbonitriding.

IPC 1-7 (main, further and additional classification)

C23C 8/34; C23C 8/02

IPC 8 full level (invention and additional information)

C23C 8/02 (2006.01); C23C 8/34 (2006.01)

CPC (invention and additional information)

C23C 8/02 (2013.01); C23C 8/34 (2013.01)

Designated contracting state (EPC)

AT CH DE ES FR GB IT LI

DOCDB simple family

EP 0812929 A1 19971217; EP 0812929 B1 20000105; AT 188513 T 20000115; DE 59604119 D1 20000210; ES 2142519 T3 20000416