Title:
POWDER FOR CONTINUOUSLY CASTING STEEL
Document Type and Number:
Japanese Patent JP3141187
Kind Code:
B2
Abstract:
PURPOSE: To uniformize the conduction of heat in a mold and to uniformly cool a cast slab by containing one or more kinds among oxide, nitride, boride, silicide of Cr and metallic Cr or Cr alloy to powder base material specifying a basicity.
CONSTITUTION: The basicity (CaO/SiO2) in the composition of the powder having powdery state or granular state for steel continuous casting is made to be in the range of 0.5-1.6. Further, at least one kind from among alkali metal, alkali earth metal and oxide, cabonate compound or fluoride of metallic aluminum is contained. Further, carbon is contained as melting velocity adjusting agent. In this powder base material, one or more kinds among Cr oxide, Cr nitride, Cr boride, Cr silicide, metallic Cr or Cr alloy are blended at the ratio of 0.1-7wt.% in the terms of Cr2O3 to the whole contents. The solid slag thickness contacting with a mold wall can uniformly and thickly be produced and a cast slab can slowly and uniformly be cooled.
Inventors:
Hisao Esaka
Shigeaki Ogibayashi
Noriyoshi Masuo
Shigeaki Ogibayashi
Noriyoshi Masuo
Application Number:
JP34200493A
Publication Date:
March 05, 2001
Filing Date:
December 14, 1993
Export Citation:
Assignee:
Nippon Steel Corporation
Nippon Steel Construction Materials Co., Ltd.
Nippon Steel Construction Materials Co., Ltd.
International Classes:
B22D11/10; B22D1/00; B22D7/10; B22D11/108; B22D11/111; (IPC1-7): B22D11/108
Domestic Patent References:
| JP55128526A | ||||
| JP663713A |
Attorney, Agent or Firm:
Masamitsu Akizawa (1 person outside)
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