Metal treatment – Stock – Directionally solidified
Reexamination Certificate
2005-07-19
2005-07-19
Lee, Deborah (Department: 1742)
Metal treatment
Stock
Directionally solidified
C148S320000
Reexamination Certificate
active
06918969
ABSTRACT:
A cast steel with excellent workability, characterized in that not less than 60% of the total cross section thereof is occupied by equiaxed crystals, the diameters (mm) of which satisfy the following formula:in-line-formulae description="In-line Formulae" end="lead"?D<1.2X1/3+0.75,in-line-formulae description="In-line Formulae" end="tail"?wherein D designates each diameter (mm) of equiaxed crystals in terms of internal structure in which the crystal orientations are identical, and X the distance (mm) from the surface of the cast steel.The cast steel and the steel material obtained by processing the cast steel have very few surface flaws and internal defects.
REFERENCES:
patent: 3754893 (1973-08-01), Frawley et al.
patent: 5690753 (1997-11-01), Kawauchi et al.
patent: 49-52725 (1974-05-01), None
patent: 50-16616 (1975-02-01), None
patent: 52-47522 (1977-04-01), None
patent: 52-60231 (1977-05-01), None
patent: 53-90129 (1978-08-01), None
patent: 57-62804 (1982-04-01), None
patent: 63-140061 (1988-06-01), None
patent: 2-151354 (1990-06-01), None
patent: 2-250925 (1990-10-01), None
patent: 7-48616 (1995-02-01), None
patent: 8-104950 (1996-04-01), None
patent: 8-155613 (1996-06-01), None
patent: 9-287015 (1997-11-01), None
patent: 10-102131 (1998-04-01), None
patent: 10-296409 (1998-11-01), None
patent: 10-324956 (1998-12-01), None
patent: 11-254107 (1999-09-01), None
patent: 11-286712 (1999-10-01), None
patent: 11-320033 (1999-11-01), None
patent: 11-320050 (1999-11-01), None
patent: 2000-61598 (2000-02-01), None
International Search Report PCT/JP00/02296.
Abe Masayuki
Kinari Yasuhiro
Koyama Yuji
Kusunoki Shintaro
Miura Ryusuke
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