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1. WO2000041831 - HOT CHAMBER DIE CASTING OF SEMISOLID METALS

Publication Number WO/2000/041831
Publication Date 20.07.2000
International Application No. PCT/US2000/000725
International Filing Date 12.01.2000
Chapter 2 Demand Filed 11.08.2000
IPC
B22D 17/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
17Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
B22D 17/04 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
17Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
02Hot chamber machines, i.e. with heated press chamber in which metal is melted
04Plunger machines
CPC
B22D 17/007
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
17Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
007Semi-solid pressure die casting
B22D 17/04
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
17Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
02Hot chamber machines, i.e. with heated press chamber in which metal is melted
04Plunger machines
Applicants
  • TEKSID, S.P.A. [IT/IT]; Via Pianessa, 123 I-10151 Turin, IT (AllExceptUS)
  • FLEMINGS, Merton, C. [US/US]; US (UsOnly)
  • GALLO, Sergio [IT/IT]; IT (UsOnly)
Inventors
  • FLEMINGS, Merton, C.; US
  • GALLO, Sergio; IT
Agents
  • PASTERNACK, Sam; Choate, Hall & Stewart Exchange Place 53 State Street Boston, MA 02109, US
  • SHAIR, Karoline, K., M. ; Choate, Hall & Stewart Exchange Place 53 State Street Boston, MA 02109, US
Priority Data
09/228,96512.01.1999US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) HOT CHAMBER DIE CASTING OF SEMISOLID METALS
(FR) COULEE SOUS PRESSION EN CHAMBRE CHAUDE DE METAUX A L'ETAT SEMI-SOLIDE
Abstract
(EN)
A hot chamber method of die casting metals in a semisolid state. The semisolid metal has a high viscosity, which can be controlled by controlling the fraction of solid phase and the morphology of the solid phase. By controlling the viscosity of the melt, turbulence and consequent gas entrapment can be minimized or eliminated. Further, shrinkage is substantially reduced, thereby reducing porosity and hot tearing to form stronger, more reliable castings.
(FR)
L'invention concerne un procédé de coulée sous pression de métaux à l'état semi-solide dans une chambre chaude, ces métaux ayant une viscosité élevée susceptible d'être contrôlée par contrôle de la fraction de phase solide et de la morphologie de cette phase. Le contrôle de la viscosité de fusion permet de réduire au minimum ou d'éliminer la turbulence et l'emprisonnement résultant des gaz. Par ailleurs, le phénomène de retrait est sensiblement réduit, ce qui permet de diminuer la porosité et la crique de solidification, de manière à former des pièces coulées plus solides et plus fiables.
Also published as
Latest bibliographic data on file with the International Bureau