Metal founding – Process – Shaping liquid metal against a forming surface
Reexamination Certificate
2006-01-24
2006-01-24
Lin, Kuang Y. (Department: 1725)
Metal founding
Process
Shaping liquid metal against a forming surface
C164S113000, C164S468000, C164S469000, C164S495000, C164S499000
Reexamination Certificate
active
06988529
ABSTRACT:
The present invention relates to a method and apparatus for preparing a metal or metal-alloy product for a casting process—wherein the product is brought into a partly solidified (semi-solidified) state before casting—in which the product contains crystallization nuclei uniformly distributed throughout its volume. The method involves introducing an amount of a chosen alloy (in pulverized form) and an amount of a chosen melt, which is at a temperature above the liquefaction temperature of the alloy, into a crystallization vessel, which is heated to below the liquefaction temperature of the alloy, and mixing the melt and the alloy together in the crystallization vessel by means of electrical and/or magnetic forces to create the desired product.
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Kennedy Covington Lobdell & Hickman LLP
Lin Kuang Y.
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