EP 0841406 A1 19980513 - Method of shaping semisolid metals
Title (en)
Method of shaping semisolid metals
Title (de)
Verfahren zum Formen halbfester Metalle
Title (fr)
Procédé pour mettre des métaux semi-solides en forme
Publication
Application
Priority
- JP 29642096 A 19961108
- JP 31731396 A 19961128
Abstract (en)
In the improved method of shaping a semisolid metal, liquid alloy having crystal nuclei and at a temperature not lower than the liquidus temperature or a partially solid, partially liquid alloy having crystal nuclei and at a temperature less than the liquidus temperature but not lower than the molding temperature is poured into a holding vessel having a thermal conductivity of at least 1 kcal/mh DEG C, cooled at an average cooling rate of 0.01 DEG C/s - 3.0 DEG C/s and held as such until just prior to the start of shaping under pressure, whereby fine primary crystals are generated in said alloy solution and the alloy within said holding vessel is temperature adjusted by induction heating such that the temperatures of various parts of the alloy fall within the desired molding temperature range for the establishment of a specified fraction liquid not later than the start of shaping and the alloy is recovered from said holding vessel, supplied into a forming mold and shaped under pressure. Shaped parts having fine and spherical microstructures can be produced in a convenient, easy and inexpensive manner without relying upon agitation by the conventional mechanical and electromagnetic methods.
IPC 1-7
IPC 8 full level
B22D 17/00 (2006.01); C22C 1/00 (2006.01)
CPC (source: EP)
B22D 17/007 (2013.01); C22C 1/12 (2023.01)
Citation (search report)
- [PX] EP 0745694 A1 19961204 - UBE INDUSTRIES [JP]
- [A] EP 0701002 A1 19960313 - UBE INDUSTRIES [JP]
Designated contracting state (EPC)
DE FR IT
DOCDB simple family (publication)
EP 0841406 A1 19980513; EP 0841406 B1 20010801; CA 2220357 A1 19980508; DE 69705917 D1 20010906; DE 69705917 T2 20020404
DOCDB simple family (application)
EP 97119554 A 19971107; CA 2220357 A 19971106; DE 69705917 T 19971107