Injection mold for rotary-type gravity casting and gravity casting method using the same

Patent metadata

Field	Value
Publication number	US-9579720-B2
Application number	US-201514624224-A
Country	US
Kind code	B2
Filing date	Feb 17, 2015
Priority date	Oct 17, 2014
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

Abstract

An injection mold for rotary-type gravity casting and a gravity casting method using the same are provided. The injection mold includes a molten metal-supply chamber that is selectively coupled to a die. The molten metal-supply chamber is also configured to, during gravity casting along with rotation, supply a pure molten metal into the die while collecting impurities contained in the molten metal and preventing the ingress of the impurities into the die.

First claim

What is claimed is:

1. An injection mold for rotary-type gravity casting, comprising:
a molten metal-supply chamber selectively coupled to a die and configured to, during gravity casting along with rotation, supply a pure molten metal into the die while collecting impurities contained in the molten metal and preventing the ingress of the impurities into the die;
a molten metal-storage chamber that communicates with the molten metal-supply chamber;
a housing having an internal space defined therein; and
a dividing wall that divides the internal space into the molten metal-storage chamber and the molten metal-supply chamber,
wherein an upper side of the dividing wall is coupled to an inner surface of an upper portion of the housing,
wherein a lower side of the dividing wall is spaced at a particular distance from an inner surface of a lower portion of the housing, and
wherein the molten metal-storage chamber has a cubic shape, and the molten metal-supply chamber has a half-trapezoidal cross section and the injection mold is connected to a topside of the half-trapezoidal cross section of the molten metal-supply chamber.

2. The injection mold according to claim 1 , wherein the inner surface of the housing is coated with ceramic.

3. The injection mold according to claim 1 , wherein the particular distance between the lower side of the dividing wall and the inner surface of the lower portion of the housing ranges between about 20 mm and 50 mm, and the dividing wall is positioned at a position that corresponds to ½ to ¾ of a longitudinal length from one side of the housing.

4. The injection mold according to claim 1 , wherein the molten metal-supply chamber has an internal angle between an inclined plane and a base plane that ranges between about 50 degrees and 80 degrees.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Ha Seok

Classifications

• B22D43/00

  Mechanical cleaning, e.g. skimming of molten metals · CPC title

• B22D23/006

  Casting by filling the mould through rotation of the mould together with a molten metal holding recipient, about a common axis · CPC title

• B22D27/08 Primary

  Shaking, vibrating, or turning of moulds · CPC title

• B22D37/00 Primary

  Controlling or regulating the pouring of molten metal from a casting melt-holding vessel ({B22D11/18,} B22D39/00, B22D41/00 take precedence) · CPC title

• B22D23/00

  Casting processes not provided for in groups B22D1/00 - B22D21/00 (making metallic powder by casting B22F9/08; alumino-thermic welding B23K23/00; remelting metals C22B9/16) · CPC title