Title:
METHOD FOR EVALUATING POWDER FOR CONTINUOUS CASTING OF MIDDLE-CARBON STEEL
Document Type and Number:
Japanese Patent JP2637005
Kind Code:
B2
Abstract:
PURPOSE: To provide the index to elucidate the correlative relation with the heat extraction strength in a casting mold by determining the temp. at the boundary between the crystal phase and liquid phase of powder.
CONSTITUTION: The selection of the powder at the time of continuously casting the middle-carbon steel having 0.08 to 0.18wt.% carbon content affects the generation of the longitudinal crack on one surface of an ingot. The heat by a heating element 12 is supplied to a furnace 11 having a temp. gradient and the powder crystal phase 15 and molten powder 16 are made to coexist affinely in a crucible 14. The boundary surface temp. of the powder crystal phase 1b and the molten powder 16 is then determined. This boundary temp. indicates the temp. at the boundary of the solid phase and molten part of the powder film existing at the time of actual casting. The temp. of the plate in the casting mold is gentler as the above-mentioned temp. is higher.
Inventors:
FUKUDA ATSUSHI
YAMAGUCHI FUKUYOSHI
YAMAGUCHI FUKUYOSHI
Application Number:
JP3480692A
Publication Date:
August 06, 1997
Filing Date:
February 21, 1992
Export Citation:
Assignee:
SHINNIPPON SEITETSU KK
International Classes:
B22D11/10; B22D11/108; B22D11/111; B22D11/16; G01N25/02; (IPC1-7): B22D11/10; B22D11/16; G01N25/02
Domestic Patent References:
| JP63214653A |
Attorney, Agent or Firm:
Yuji Miura
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