Method and apparatus for manufacturing semi-solid metallic slurry

Abstract

The present invention provides a method and apparatus for manufacturing a high-quality semi-solid metallic slurry containing fine, uniform spherical particles that can be readily and conveniently applied to a subsequent process, with improvements in energy efficiency and mechanical properties, cost reduction, convenience of casting, and shorter manufacturing time. The semi-solid metallic slurry manufacturing method includes applying an electromagnetic field to a space containing a slurry vessel, loading a molten metal into the slurry vessel in a state where the electromagnetic field is applied to the space, and drawing the slurry vessel out from the space. The semi-solid metallic slurry manufacturing apparatus includes at least one slurry vessel, at least one stirring unit having a space for the at least one slurry vessel and applying an electromagnetic field to the space, a driving unit moving the slurry vessel at least up and down to place the slurry vessel in the space, and a loading unit loading a molten metal in liquid state into the slurry vessel.

Description

[0001] This patent application claims the priority of the following four Korean patent applications filed on September 25, 2002, Application No. 2002-58163, October 16, 2002, Application No. 2002-63162, January 2003 Application No. 2003-3250 filed on the 17th and Application No. 2003-13517 filed on March 4, 2003. These four patents are incorporated herein by reference as a whole. technical field [0002] The present invention relates to a manufacturing method and equipment for a semi-solid phase metal magma, more precisely, relates to a semi-solid phase metal magma containing fine, uniform spherical particles and in a mixed state of solid phase and liquid phase Manufacturing method and manufacturing equipment. Background technique [0003] Semi-solid metal slurries refer to metal materials in a mixed state of solid and liquid phases used in casting or shape casting processes. In the semi-solid specific temperature range, the semi-solid metal melt is composed of a specific ...

AI Technical Summary

Problems solved by technology

Since the force such as vibration is applied to the molten metal when the temperature of at least a part of the molten metal is lowered below the liquidus temperature, the formation of the initial solidification layer will release the latent heat of solidification, which will lead to problems such as reduced cooling rate and increased production. Lots of deficiencies like crafting time

In addition, due to the uneven temperature of the inner wall and the central area of ​​the container, it is difficult to form fine uniform spherical equiaxed crystal metal particles

This structural inhomogeneity of the metal particles will be even greater if the temperature of the molten metal being fed into the vessel is not controlled

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