Metal founding – Process – Shaping liquid metal against a forming surface
Reexamination Certificate
2007-07-12
2009-08-11
Lin, Kuang (Department: 1793)
Metal founding
Process
Shaping liquid metal against a forming surface
C164S423000
Reexamination Certificate
active
07571757
ABSTRACT:
Disclosed is a rare earth magnet in the R—T—B (rare earth element-transition metal-boron) system that is made from an improved composition and properties of main phase alloy in the R—T—B system containing Pr and a boundary alloy. Disclosed also is a manufacturing method of the rare earth magnet alloy flake by a strip casting method with improved rotating rollers such that the alloy flake has a specified fine surface roughness and has a small and regulated amount of fine R-rich phase regions. Consequently, the alloy flake for the rare earth magnet does not containing α-Fe and has a homogeneous morphology so that the rare earth magnet formed by sintering or bonding the alloy flakes exhibits excellent magnetic properties.
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Lin Kuang
Showa Denko K.K.
Sughrue & Mion, PLLC
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