Semisolid casting and forging device and method, and cast and forged product

According to the present invention, excellent products, thick products as well as thin products, having fine mechanical properties and microstructures can be produced without the use of complicated processes or equipment. Provided is a semisolid casting and forging method in which a molten metal is...

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Bibliographic Details
Main Authors ITAMURA, MASAYUKI, ANZAI, KOUICHI
Format Patent
LanguageChinese
English
Published 01.06.2015
Subjects
CASTING
CASTING OF METALS
CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
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Summary:According to the present invention, excellent products, thick products as well as thin products, having fine mechanical properties and microstructures can be produced without the use of complicated processes or equipment. Provided is a semisolid casting and forging method in which a molten metal is poured, in such a way that supercooling occurs, into the lower mold of a press which is controlled so that the solid phase ratio achieves a desired constant value, and after a semisolid slurry is produced, the semisolid slurry is compressed to form a product by moving the upper mold or the lower mold at a speed such that the speed from the moment when at least the upper mold comes into contact with the semisolid slurry is 0.1-1.5m/s. It is preferable to employ crystal grains having a grain size such that fluidity increases due to compression, and thus a grain size of 50 [mu]m or less is preferable.
Bibliography:Application Number: TW20140135333