Patent ID: 6821478
Filing Date: 2004-11-23
Classification: B22F,F27B

Abstract:
A process for sintering aluminium-based sintered parts in which the following steps are carried out in separate atmospheres and in spatially separate areas in each case:a) de-bindering the parts to be sintered; b) heating the parts to be sintered to sintering temperature and maintaining at sintering temperature for a certain time; c) cooling the sintered parts in a controlled manner, characterised in that in process step b) an inert gas the oxygen content of which corresponds to a dew point not higher than âˆ’40Â° C. is used as the atmosphere, and in that the parts (23) for sintering are heated to a sintering temperature of 560 to 620Â° C. by circulation of the correspondingly heated inert gas.