EP 0695813 B1 19990908 - Process for carburizing carburisable work pieces under the action of plasma-pulses
Title (en)
Process for carburizing carburisable work pieces under the action of plasma-pulses
Title (de)
Verfahren zum Aufkohlen von Bauteilen aus kohlungsfähigen Werkstoffen mittels einer impulsförmig betriebenen Plasma-entladung
Title (fr)
Procédé pour la carburation de pièces carburables par des impulsions à plasma
Publication
Application
Priority
DE 4427902 A 19940806
Abstract (en)
[origin: US5558725A] Workpieces of carburizable materials, especially steels, are carburized by means of a pulsed plasma discharge in a carbon-containing atmosphere at pressures of 0.1-30 mbars and at pulsed voltages of 200-2,000 V, preferably of 300-1,000 V. A continuously applied baseline voltage, which is below the breakdown voltage, is superimposed on the pulsed voltage. The baseline voltage is preferably a direct-current voltage, which is in the range of 10-150 V, preferably of 20-100 V.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
C23C 8/38 (2013.01 - EP US)
Designated contracting state (EPC)
AT CH DE FR GB IT LI SE
DOCDB simple family (publication)
US 5558725 A 19960924; AT E184329 T1 19990915; DE 4427902 C1 19950330; DE 59506771 D1 19991014; EP 0695813 A2 19960207; EP 0695813 A3 19970212; EP 0695813 B1 19990908; JP H08170162 A 19960702
DOCDB simple family (application)
US 49821695 A 19950705; AT 95109082 T 19950613; DE 4427902 A 19940806; DE 59506771 T 19950613; EP 95109082 A 19950613; JP 19884395 A 19950803