FIRE-RESISTANT PLATING FOR SLIDING NOZZLE, AND METHOD OF MANUFACTURING SAME

The present invention provides a fire-resistant plating that inhibits the occurrence of surface damage on a sliding surface when receiving steel having an especially low free oxygen concentration in a melt, such as Al-killed steel. The fire-resistant plating of the present invention contains 15% by...

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Main Authors MAKINO, Taro, OOMARU, Zenta, AKAMINE, Keiichiro
Format Patent
LanguageEnglish
French
Japanese
Published 05.04.2018
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Abstract The present invention provides a fire-resistant plating that inhibits the occurrence of surface damage on a sliding surface when receiving steel having an especially low free oxygen concentration in a melt, such as Al-killed steel. The fire-resistant plating of the present invention contains 15% by mass to 45% by mass of an Al4O4C component, 2.0% by mass to 4.5% by mass of a free carbon component, 0.5% by mass to 4.0% by mass of an SiO2 component, and 1.0% by mass or less (inclusive of 0) of a metallic aluminum component, the main component of the remainder being an Al2O3 component as a main component. The plating includes a surface that serves as a sliding surface, and has a permeability of 40×10-17m2 or less in a direction orthogonal to said surface serving as a sliding surface, and an apparent porosity of 11.0% or less. La présente invention concerne un placage résistant au feu qui inhibe l'apparition de l'endommagement d'une surface sur une surface coulissante lorsqu'elle reçoit de l'acier possédant une concentration en oxygène particulièrement faible dans une masse fondue, telle qu'un acier calmé à l'Al. Le placage résistant au feu de la présente invention comporte de 15 % en masse à 45 % en masse d'un constituant Al4O4C, de 2,0 % en masse à 4,5 % en masse d'un constituant carboné libre, de 0,5 % en masse à 4,0 % en masse d'un constituant SiO2, et 1,0 % en masse ou moins (0 inclus) d'un constituant d'aluminium métallique, le constituant principal du reste étant un constituant Al2O3 en tant que constituant principal. Le placage comprend une surface qui sert de surface coulissante, et possède une perméabilité inférieure ou égale à 40×10-17m2 dans une direction orthogonale à ladite surface servant de surface coulissante, et une porosité apparente inférieure ou égale à 11,0 %. 本発明は,Alキルド鋼等,特に溶鋼中のフリー酸素濃度が低い鋼を受鋼する場合において,摺動面に面荒れが生じ難いプレート耐火物を提供する。本発明のプレート耐火物は,Al4O4C成分を15質量%以上45質量%以下,フリーの炭素成分を2.0質量%以上4.5%質量%以下,SiO2成分を0.5質量%以上4.0質量%以下,金属Al成分を1.0質量%以下(ゼロを含む),残部にAl2O3成分を主成分として含有し,摺動面となる面を含み当該摺動面となる面に対して垂直方向の通気率が40×10-17m2以下,見掛け気孔率が11.0%以下である。
AbstractList The present invention provides a fire-resistant plating that inhibits the occurrence of surface damage on a sliding surface when receiving steel having an especially low free oxygen concentration in a melt, such as Al-killed steel. The fire-resistant plating of the present invention contains 15% by mass to 45% by mass of an Al4O4C component, 2.0% by mass to 4.5% by mass of a free carbon component, 0.5% by mass to 4.0% by mass of an SiO2 component, and 1.0% by mass or less (inclusive of 0) of a metallic aluminum component, the main component of the remainder being an Al2O3 component as a main component. The plating includes a surface that serves as a sliding surface, and has a permeability of 40×10-17m2 or less in a direction orthogonal to said surface serving as a sliding surface, and an apparent porosity of 11.0% or less. La présente invention concerne un placage résistant au feu qui inhibe l'apparition de l'endommagement d'une surface sur une surface coulissante lorsqu'elle reçoit de l'acier possédant une concentration en oxygène particulièrement faible dans une masse fondue, telle qu'un acier calmé à l'Al. Le placage résistant au feu de la présente invention comporte de 15 % en masse à 45 % en masse d'un constituant Al4O4C, de 2,0 % en masse à 4,5 % en masse d'un constituant carboné libre, de 0,5 % en masse à 4,0 % en masse d'un constituant SiO2, et 1,0 % en masse ou moins (0 inclus) d'un constituant d'aluminium métallique, le constituant principal du reste étant un constituant Al2O3 en tant que constituant principal. Le placage comprend une surface qui sert de surface coulissante, et possède une perméabilité inférieure ou égale à 40×10-17m2 dans une direction orthogonale à ladite surface servant de surface coulissante, et une porosité apparente inférieure ou égale à 11,0 %. 本発明は,Alキルド鋼等,特に溶鋼中のフリー酸素濃度が低い鋼を受鋼する場合において,摺動面に面荒れが生じ難いプレート耐火物を提供する。本発明のプレート耐火物は,Al4O4C成分を15質量%以上45質量%以下,フリーの炭素成分を2.0質量%以上4.5%質量%以下,SiO2成分を0.5質量%以上4.0質量%以下,金属Al成分を1.0質量%以下(ゼロを含む),残部にAl2O3成分を主成分として含有し,摺動面となる面を含み当該摺動面となる面に対して垂直方向の通気率が40×10-17m2以下,見掛け気孔率が11.0%以下である。
Author OOMARU, Zenta
AKAMINE, Keiichiro
MAKINO, Taro
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DocumentTitleAlternate PLACAGE RÉSISTANT AU FEU DESTINÉ À UNE BUSE COULISSANTE, ET PROCÉDÉ DE FABRICATION DUDIT PLACAGE RÉSISTANT AU FEU
スライディングノズル用プレート耐火物及びその製造方法
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RelatedCompanies KROSAKIHARIMA CORPORATION
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Snippet The present invention provides a fire-resistant plating that inhibits the occurrence of surface damage on a sliding surface when receiving steel having an...
SourceID epo
SourceType Open Access Repository
SubjectTerms ARTIFICIAL STONE
CASTING
CASTING OF METALS
CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
PERFORMING OPERATIONS
POWDER METALLURGY
REFRACTORIES
SLAG
TRANSPORTING
TREATMENT OF NATURAL STONE
Title FIRE-RESISTANT PLATING FOR SLIDING NOZZLE, AND METHOD OF MANUFACTURING SAME
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