Patent ID: 9738962
Date: 2017-08-22
CPC Classifications: C21D,C23C

Claim:
1. A method for the carburization of a deep-drawn article or a stamped-bent article made of austenitic rustproof stainless steel, comprising: inserting the article into an oven in a first process step and heating the article to a first temperature, wherein an oxygen containing standard atmosphere that is present in the oven is replaced by a first gas mixture, and in which the article is heated up to a second temperature in a second process step, wherein the first gas mixture is replaced by a second gas mixture, and in which the article is maintained on the second temperature in a third process step, wherein the second gas mixture is replaced by a third gas mixture, and in which the article is cooled down to a third temperature in a fourth process step, wherein the third gas mixture is replaced by a fourth gas mixture.