Chill casting process and foam casting process as well as a...

Details Chill casting process and foam casting process as well as a... Chill casting process and foam casting process as well as a...

2007-02-13

2007-02-13

Tran, Len (Department: 1725)

Metal founding

Process

Shaping liquid metal against a forming surface

C164S079000

Reexamination Certificate

active

10858466

ABSTRACT:
A chill casting and foam casting method together with a casting mold that is closable in a pressure-tight manner for producing molded articles. To improve the chill casting method and the foam casting method so that the quality of the products produced is greatly increased and particularly homogeneous material properties are achieved, a gas is supplied to a melt which only partially fills a closed mold cavity until the inside pressure within the mold cavity exceeds the melting point pressure curve such that the melt suddenly solidifies. The solidification process takes place largely independently of location and is thus sudden, so that the instantaneous state of the melt is reflected in the resulting solidified article with virtually no change. This makes it possible to produce molded articles which have a uniform core distribution and meet high quality demands in a reliable and reproducible manner. A casting mold that can be closed in a pressure-tight manner for carrying out such methods has at least one inlet opening for the supply of a fluid, in particular an inert gas.

REFERENCES:
patent: 6840301 (2005-01-01), Nichol et al.
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patent: 4326982 (1995-02-01), None
patent: 10104340 (2002-08-01), None
patent: 1266973 (2002-06-01), None
patent: 03/015960 (2003-02-01), None

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