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Title:
CAST STEEL AND METAL MOLD FOR CASTING
Document Type and Number:
WIPO Patent Application WO/2002/077309
Kind Code:
A1
Abstract:
A cast steel with excellent internal quality and machinability after casting, wherein a steel composition is limited with respect to specific components and the contents of Ti, Zr, S, and N in the steel are adjusted to an appropriate range to form fine sulfides of Ti and Zr; a metal mold having such an internal quality in cast state that provides an excellent machinability equivalent to that of a forged steel product, wherein the metal mold is manufactured by casting the cast steel, whereby the cast steel can be used for cast materials for deep engraving having a working surface extending to the inside of a raw material and for finishing materials where the excellence of surface properties is requested strictly.

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Inventors:
OKADA YASUTAKA (JP)
WATARI KOJI (JP)
Application Number:
PCT/JP2002/002729
Publication Date:
October 03, 2002
Filing Date:
March 20, 2002
Export Citation:
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Assignee:
SUMITOMO METAL IND (JP)
OKADA YASUTAKA (JP)
WATARI KOJI (JP)
International Classes:
C22C38/00; C22C38/02; C22C38/04; C22C38/08; C22C38/14; C22C38/16; C22C38/18; C22C38/60; (IPC1-7): C22C38/00
Foreign References:
JPH11323487A1999-11-26
JPH11293390A1999-10-26
JPH11302779A1999-11-02
JPH111743A1999-01-06
JPH11335775A1999-12-07
JPH11293385A1999-10-26
JPH02138439A1990-05-28
JPH11335732A1999-12-07
Attorney, Agent or Firm:
Mori, Michio (Higashinaniwa-cho 5-chome Amagasaki-shi, Hyogo, JP)
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