US 9,038,705 B2 · Die-casting method, die-casting device, and die-cast article

Abstract

A die casting method and apparatus are provided, thereby making it possible to produce a thin diecast product that has hitherto been considered impossible to realize, and a diecast product is also provided. A semi-solidified metallic material is formed having particles in solid phase of a particle size less than 30 μm, and is thereupon injected into a die. A die casting machine has a sleeve into which a melt of metallic material is poured, and the semi-solidifying material there when it has a certain proportion of solid phase reached is injected into the die with a plunger to which pressure is applied. The melt of metallic material is poured into the sleeve so that the material occupies inside the sleeve at a proportion in vertical cross-sectional area of 30% or less. The particle size in this semi-solid material is held unvaried in a product as diecast.

Claims12

Dependent claims

A production method of a die cast product of an alloy crystallizing primary aluminum crystals, comprising:

pouring a melt of metallic material, having a temperature higher than a melting point of the metallic material by 0 to 50° C., into a sleeve wherein a heat drawing rate is controlled, so that the material occupies an interior of the sleeve at a filling factor of not more than 30%;
forming in the sleeve a semisolidified metallic material by controlling such that a liquidus curve is passed through by the poured melt which is cooled at a cooling rate of 20° C./s. or more;
and
injecting the semisolidified metallic material into a die.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

14/345,531Filed 18 Sep 2012

Priority

JP 2011-20211615 Sep 2011

Published

US 2014/0251569 A111 Sep 2014

Granted

26 May 2015

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

B22D 25/02
Special casting characterised by the nature of the product: by its peculiarity of shape; of works of art
B22D 17/002
Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure: using movable moulds
B22D 17/007
Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure: semi-solid pressure die…
B22D 17/10
Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled: with horizontal press motion

Die-casting method, die-casting device, and die-cast article

Life of this patent

Die-casting method, die-casting device, and die-cast article

Life of this patent

Abstract

Claims12