Claims
- 1. A mold additive for use in a continuous casting under a high cycle mold oscillation, which comprises a base material having a chemical composition of CaO--BaO--SiO.sub.2 --F system, said base material being vitrified by a preliminary melting and having a weight ratio of (CaO+BaO)/SiO.sub.2 of 0.6-2.5 and containing not less than 2% by weight of BaO, 2-15% by weight of F and not more than 10% of Al.sub.2 O.sub.3 ; said mold additive consisting mainly of 20-40% by weight of SiO.sub.2, 15-35% by weight of CaO and 5-20% by weight of BaO, and containing 2-15% by weight in total of at least one carbonate of alkali and alkaline earth metals, 2-30% by weight in total of at least one fluoride of alkali and alkaline earth metals, 2-10% by weight in total of at least one oxide of Fe, Mn, and Ni, and 0.5-5% by weight of carbon based on said base material, respectively, and having a solidification temperature of not more than 900.degree. C. and a viscosity at 1300.degree. C. of not more than 2 poises.
- 2. A mold additive according to claim 1, wherein said solidification temperature is not more than 800.degree. C. and said viscosity at 1,300.degree. C. is not more than 2 poises.
- 3. A mold additive according to claim 1, wherein said amount of carbon is within a range of 0.5-5% by weight.
Priority Claims (1)
Number |
Date |
Country |
Kind |
58-180704 |
Sep 1983 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 865,910, filed May 13, 1986, which is a continuation of U.S. Ser. No. 655,928 filed Sept. 28, 1984, both abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (1)
Number |
Date |
Country |
0017713 |
Oct 1980 |
EPX |
Non-Patent Literature Citations (2)
Entry |
Abstract: Jap Patent 54-87,625 Jul. 12, 1979. |
Abstract: Jap Patent 49-87,515 Aug. 21, 1974. |
Continuations (2)
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Number |
Date |
Country |
Parent |
865910 |
May 1986 |
|
Parent |
655928 |
Sep 1984 |
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