Method and apparatus for making semi-solid metal slurry

a technology manufacturing method, which is applied in the field of method and apparatus for manufacturing semi-solid metal slurry, can solve the problems of reducing the productivity of semi-solid metal slurry, difficult to achieve entirely uniform and fine structure, and serious non-uniform structure, etc., and achieves the effect of simple process

Inactive Publication Date: 2007-05-24
LEE HAN JUNG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0009] Therefore, the present invention has been made in view of the above problems, and it is an object of the present inventio

Problems solved by technology

However, according to the conventional method and apparatus for manufacturing the semi-solid metal slurry, the shear stress is used for forming the spherical structure by destructing the dendrites.
That is, in the conventional method and apparatus, since force, such as vibration, is applied to the dendrites after some portion of the molten metal has a temperature lowered below a liquidus line of the metal, it is difficult to achieve entirely uniform and fine structure in an initial solidification layer and metallic structure formed

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  • Method and apparatus for making semi-solid metal slurry
  • Method and apparatus for making semi-solid metal slurry
  • Method and apparatus for making semi-solid metal slurry

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Embodiment Construction

[0029] Preferred embodiments will now be described in detail with reference to the accompanying drawings.

[0030]FIG. 1 is a schematic block diagram illustrating a method for manufacturing a semi-solid metal slurry according to the invention.

[0031] The method of the invention can manufacture a semi-solid metal slurry having a uniform and non-directional spherical structure, which provides excellent results in tests for workability for forming a complicated shape, dimensional precision, formability, heat treatment, pressure resistance associated to a bubble defect, while providing excellent productivity, and which has excellent wear resistance, elongation, hardness, and tensile strength.

[0032] The method of the invention comprises step S1 of feeding molten metal into a furnace through a pouring port of a well-known ladle; step S2 of agitating the molten metal in the furnace by application of an electromagnetic field through an electromagnetic agitator, thereby removing a temperature...

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Abstract

The invention relates to a method and apparatus for manufacturing a semi-solid metal slurry, and more particularly to a method and apparatus for manufacturing a semi-solid metal slurry having a uniform spherical structure through a simple process. The method comprises the steps of feeding molten metal into a furnace, agitating the molten metal in the furnace by application of an electromagnetic field through an electromagnetic agitator to remove a temperature difference in the molten metal while suppressing growth of dendrites, performing rapid cooling to remove a specific heat and latent heat of the molten metal emitted from the furnace in a cooling part to prevent oxidation of the molten metal in an inert atmosphere while preventing dendrites from being formed therein, and storing the cooled semi-solid metal slurry dropped through a guide member positioned at an angle such that the semi-solid metal slurry is uniformly distributed in a slurry storing container.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a method and apparatus for manufacturing a semi-solid metal slurry, and more particularly to a method and apparatus for manufacturing a semi-solid metal slurry having a uniform spherical structure through a simple process. [0003] 2. Description of the Related Art [0004] In general, semi-solid metal forming is a method for forming metal or a metallic composite material in a range of temperature within which a liquid phase and a solid phase exist together. The semi-solid metal forming technology has been studied and developed for practical use, as a new technology, which can relieve drawbacks while maximizing advantages of a casting method for forming metal in a molten state and of a forging method for forming metal in a solid state. In order to effectively form the semi-solid metal, it is important to manufacture slurry having an initial structure with spherical particles uniformly di...

Claims

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Application Information

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IPC IPC(8): B22D17/08B22D23/00B22D25/00B22D17/00B22D27/02C22C1/00
CPCB22D17/007B22D27/02C22C1/005C22C1/12
Inventor LEE, HAN-JUNG
Owner LEE HAN JUNG
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