Title:
PRODUCTION OF HIGH CHROMIUM CAST IRON COMPOSITE ALLOY
Document Type and Number:
Japanese Patent JP3281903
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve the heat resistance and wear resistance of an alloy by preheating a preform composed of ceramic short fibers or whiskers and thereafter, force-fitting the molten metal of high chromium cast iron therein.
SOLUTION: Preferably, as ceramic short fibers, the ones of alumina series, alumina-silica series or silicon carbide series are used and as whiskers, the ones of silicon carbide series, zirconia series, silicon nitride series, potassium titanate series, magnesia series or calcium series are used. As high chromium cast iron, hypo-eutectic high chromium cast iron or hyper-eutectic high chromium cast iron contg. 2 to 35% wt.% Cr and 2 to 5 wt.% C is preferably used. As a preform, the one in which the volume fractinal ratio of the ceramic shrot fibers or the whiskers is 8 to 50% is preferable. For force-fitting the molten metal to all the corners of the preform, the preform is preheated and the preheating temp. is controlled to the one equal to or below the m.p. of the molten metal.
Inventors:
Mitsuru Sakamoto
Shigeru Akiyama
Hidetoshi Ueno
Shigeru Akiyama
Hidetoshi Ueno
Application Number:
JP30640498A
Publication Date:
May 13, 2002
Filing Date:
October 14, 1998
Export Citation:
Assignee:
National Institute of Advanced Industrial Science and Technology
International Classes:
C22C47/08; C22C1/10; C22C37/06; C22C47/00; C22C47/06; C22C47/12; C22C47/18; C22C49/08; (IPC1-7): C22C47/06; C22C37/06; C22C47/18; C22C49/08
Domestic Patent References:
| JP1205040A | ||||
| JP6431563A | ||||
| JP762470A | ||||
| JP2298652A | ||||
| JP1193496A | ||||
| JP642181B2 | ||||
| JP5312446B2 |
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