METHOD FOR PRODUCING AT LEAST ONE COMPONENT AND OPEN-LOOP AND/OR CLOSED-LOOP CONTROL DEVICE

WIPO Patent Application WO/2014/016251

A3

The invention relates to a method for producing at least one, in particular metal, component (2), preferably a cylinder head, a nozzle body for a high-pressure injection pump, a component of a diesel injection engine, or a throttle disk, by means of low-pressure carbonitriding in at least one treatment chamber (4), which preferably can be evacuated, and an open-loop and/or closed-loop control device (11), which enables the setting of a specified ratio between a carbon concentration and a nitrogen concentration in a surface layer of the at least one component (2). In at least one treatment phase, a carbon-providing gas and a nitrogen-providing gas (8) are simultaneously introduced into the treatment chamber (4). Based on a specified ratio between a carbon concentration and a nitrogen concentration to be absorbed by the at least one component (2) in a surface layer of the component, a target value for the temperature and/or the pressure to be set in the treatment chamber is determined and is set in the treatment chamber for a specified time.

KOCH DAVID (DE)
BAJOHR SIEGFRIED (DE)
HAGYMASI LASZLO (DE)
BUCHHOLZ DOMINIC (DE)
REIMERT RAINER (DE)
WALDENMAIER THOMAS (DE)

PCT/EP2013/065420

May 08, 2014

July 22, 2013

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BOSCH GMBH ROBERT (DE)

C23C8/00; C23C8/02; C23C8/30; C23C8/32; C23C8/34; C23C8/80

WO2011098306A1	2011-08-18
WO2012048669A1	2012-04-19

EP1964940A1	2008-09-03
SU1680798A1	1991-09-30
DE19719225C1	1998-08-06

ROBERT BOSCH GMBH (Stuttgart, DE)

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