EP 0562250 B1 19971119 - Process and device for quenching of metal pieces
Title (en)
Process and device for quenching of metal pieces
Title (de)
Verfahren und Vorrichtung zum Abschrecken metallischer Werkstücke
Title (fr)
Procédé et dispositif de trempe de pièces métalliques
Publication
Application
Priority
DE 4208485 A 19920317
Abstract (en)
[origin: EP0562250A1] For quenching heated metal workpieces (15) at a quenching intensity which is in a range typical for oil- or water-quenching with an H-value of 0.2 to 4, the quenching medium used is a cooling gas which is made to act in the form of discrete impingement jets issuing from a nozzle field onto the workpiece surface which is to be cooled. With a limitation of the delivery rate for the cooling gas to a preset maximum limit of about 1,000 kW/m<2> of nozzle field, the quenching intensity is brought to a value of between H = 0.2 and H = 4 by appropriate selection of gas jet parameters, in particular the gas velocity w, the gas pressure p, the gas jet cross-sectional area and the number of the impingement jets per unit area. <IMAGE>
IPC 1-7
IPC 8 full level
C21D 1/18 (2006.01); C21D 1/613 (2006.01); C21D 1/667 (2006.01); C21D 9/40 (2006.01)
CPC (source: EP US)
C21D 1/613 (2013.01 - EP US); C21D 1/667 (2013.01 - EP US); C21D 9/40 (2013.01 - EP US)
Designated contracting state (EPC)
AT CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
US 5452882 A 19950926; AT E160382 T1 19971215; DE 4208485 C1 19930211; DE 4208485 C2 19970904; DE 59307686 D1 19980102; EP 0562250 A1 19930929; EP 0562250 B1 19971119; JP H0610037 A 19940118
DOCDB simple family (application)
US 33679694 A 19941109; AT 93101876 T 19930206; DE 4208485 A 19920317; DE 59307686 T 19930206; EP 93101876 A 19930206; JP 5690993 A 19930317