EP 1060048 A1 20001220 - METHOD OF CASTING A METAL MELT IN THE PRESENCE OF A MAGNETIC FIELD
Title (en)
METHOD OF CASTING A METAL MELT IN THE PRESENCE OF A MAGNETIC FIELD
Title (de)
VERFAHREN ZUM VERGIESSEN EINER METALLSCHMELZE UNTER EINWIRKUNG EINES MAGNETFELDES
Title (fr)
PROCEDE POUR LA COULEE DE METAL FONDU SOUS L'INFLUENCE D'UN CHAMP MAGNETIQUE
Publication
Application
Priority
- DE 19809631 A 19980306
- EP 9901448 W 19990305
Abstract (en)
[origin: WO9944773A1] The invention relates to a method for casting a molten mass at a relatively low solidification rate, such as, in particular, gravity chill-cast methods, sand casting methods, low pressure casting methods or intermediate forms of these methods, whereby the molten mass has phases, such as the presettling of crystals, particles or short fibers, having a lower conductibility of electricity than the metal of the remaining molten mass. In order to obtain surface areas which are resistant to wear, the invention provides that the molten mass is solidified by at least the local effect of an electromagnetic alternating field and that, in the course of this, the electromagnetic alternating field penetrates into a surface area with a penetration depth according to the frequency of the alternating field and to the conductibility of the molten mass. As a result, the phases with lower conductibilities are enhanced on these surface areas of the cast part.
IPC 1-7
IPC 8 full level
B01F 13/08 (2006.01); B22D 19/14 (2006.01); B22D 27/02 (2006.01); C22C 1/10 (2006.01)
CPC (source: EP)
B22D 19/14 (2013.01); B22D 27/02 (2013.01)
Citation (search report)
See references of WO 9944773A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 9944773 A1 19990910; DE 19809631 C1 20000330; DE 59909748 D1 20040722; EP 1060048 A1 20001220; EP 1060048 B1 20040616
DOCDB simple family (application)
EP 9901448 W 19990305; DE 19809631 A 19980306; DE 59909748 T 19990305; EP 99907603 A 19990305