Baking-free long water gap for large-plate-blank continuous casing low-carbon and low-silicon steel and preparation process of baking-free long water gap

[0033] The baking-free shroud for large slab continuous casting low-carbon and low-silicon steel of the present invention is composed of a shroud substrate and an inner lining, the shroud substrate is composed of a zirconium-carbon outer layer and an aluminum-carbon inner layer, and the zirconium-carbon outer The layer adopts zirconia and graphite as raw materials, and the outer layer of zirconium carbon can be composed of the following parts by weight: 70 parts of zirconium, 12 parts of C, and 2 parts of CaO; the inner layer of aluminum carbon uses corundum and graphite as raw materials, The aluminum carbon inner layer can be made of the following materials in parts by weight: Al 2 o 3 60 parts, C 10 parts; the weight ratio of each component raw material of the inner lining can be: 74 parts of aluminum-magnesium spinel, 14 parts of explosion-proof fiber, 8 parts of phenolic resin; the thickness of the outer layer of zirconium carbon can be 10mm; the thickness of the aluminum c

[0042] The baking-free shroud for large slab continuous casting low-carbon and low-silicon steel of the present invention is composed of a shroud substrate and an inner lining, the shroud substrate is composed of a zirconium-carbon outer layer and an aluminum-carbon inner layer, and the zirconium-carbon outer The layer adopts zirconia and graphite as raw materials, and the outer layer of zirconium carbon can be composed of the following parts by weight: 72.5 parts of zirconium, 12.5 parts of C, and 2.5 parts of CaO; the inner layer of aluminum carbon uses corundum and graphite as raw materials, The aluminum carbon inner layer can be made of the following materials in parts by weight: Al 2 o 3 65 parts, C 15 parts; the weight ratio of each component raw material of the inner lining can be: 74.5 parts of aluminum-magnesium spinel, 14.5 parts of explosion-proof fiber, 8.5 parts of phenolic resin; the thickness of the outer layer of zirconium carbon can be 11㎜; the thickness of the

[0044] The baking-free shroud for large slab continuous casting low-carbon and low-silicon steel of the present invention is composed of a shroud substrate and an inner lining, the shroud substrate is composed of a zirconium-carbon outer layer and an aluminum-carbon inner layer, and the zirconium-carbon outer The layer adopts zirconia and graphite as raw materials, and the outer layer of zirconium carbon can be composed of the following parts by weight: 75 parts of zirconium, 13 parts of C, and 3 parts of CaO; the inner layer of aluminum carbon uses corundum and graphite as raw materials, The aluminum carbon inner layer can be made of the following materials in parts by weight: Al 2 o 3 70 parts, C 20 parts; the weight ratio of each component raw material of the inner lining can be: 75 parts of aluminum-magnesium spinel, 15 parts of explosion-proof fiber, 9 parts of phenolic resin, and the thickness of the outer layer of zirconium carbon can be 12.5㎜; the aluminum carbon inner