Method and apparatus for making a thixotropic metal slurry

Details Method and apparatus for making a thixotropic metal slurry Method and apparatus for making a thixotropic metal slurry

2006-01-31

2006-01-31

Kastler, Scott (Department: 1742)

Specialized metallurgical processes, compositions for use therei

Processes

Producing solid particulate free metal directly from liquid...

C266S237000, C266S239000, C222S595000

Reexamination Certificate

active

06991670

ABSTRACT:
An apparatus for producing a thixotropic metallic melt by simultaneously controlledly cooling and stirring the melt to form solid particles of a first phase suspended in a residual liquid second phase. Vigorous stirring of the metallic melt results in the formation of degenerate dendritic particles having substantially spheroidal shapes. The metallic melt is stirred to rapidly and efficiently circulate the forming semi-solid slurry. Circulation of the forming semi-solid slurry results in a substantially uniform temperature throughout. Through precision stirring and cooling, a semi-solid slurry is formed having a first solid phase of about 70-80 wt. % suspended in a second liquid phase.

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“Semisolid Metal Process Eliminates Preformed Billets”, by Samuel D. Norville,Die Casting Management, Mar. 1998, pp. 31-33.

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