Compositions: coating or plastic – Coating or plastic compositions – Alkali metal silicate containing
Patent
1997-04-11
1999-05-04
Marcantoni, Paul
Compositions: coating or plastic
Coating or plastic compositions
Alkali metal silicate containing
501 17, 501 32, 501 57, 501 70, 501 72, 501151, C03C 0814
Patent
active
059000520
ABSTRACT:
There is provided a belt coating material for a belt type continuous casting, which is capable of adsorbing the intermediate between a cast slab and the coating material to prevent the intermediate from remaining on the slab, and reducing the averaged heat flux during the casting to avoid an occurrence of cracking in a medium carbon steel. The belt coating material comprises: (1) a powder having a composition comprising 10 to 40 weight % of SiO.sub.2, 1 to 10 weight % of Al.sub.2 O.sub.3, 10 to 40 weight % of CaO, 10 to 30 weight % of Na.sub.2 O, 1 to 10 weight % of MgO, 10 to 20 weight % of F, and 1 to 5 weight % of LiO.sub.2, the powder being prepared by once melting the blended components, solidifying the melt, and crushing it into the powder to adjust the average grain diameter of the powder to be equal to or smaller than 10 .mu.m; (2) 0.1 to 10 weight % of graphite mixed into the powder to provide a mixture, the graphite having the same grain diameter with the powder; and (3) 0.5 to 10 weight % of water glass, a viscosity increasing material, and water, each being added into the mixture so as to adjust the viscosity of the material to a predetermined value.
Fujioka Hironori
Hirata Kouichi
Nakajima Hiroshi
Marcantoni Paul
Mitsubishi Heavy Industries Ltd.
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