Continuous casting nozzle for molten steel
AssigneeAkechi Ceramics Kabushiki Kaisha
InventorsToshiyuki Muroi, Kazumi Oguri
Life of this patent
Estimating the term…
Abstract
A continuous casting nozzle for casting molten steel, wherein at least a surface layer of an inner bore of the continuous casting nozzle contacting with a molten steel is formed of a refractory comprising: an aggregate consisting essentially of zirconia (ZrO2), or comprising zirconia (ZrO2) as its main component and melting point thereof being at least 1750° C.: from 15 to 60 wt. %; and roseki as a balance. The refractory is added to a thermosetting resin as a binder, kneaded, formed, and sintered in an anti-oxidizing atmosphere.
Claims5
A continuous casting nozzle for casting molten steel, wherein at least a surface layer of an inner bore of said continuous casting nozzle contacting with a molten steel is formed of a refractory comprising:
- an aggregate consisting essentially of zirconia (ZrO2) having a melting point of at least 1750° C., wherein said aggregate is present in an amount from about 15 to about 60 wt. %;
- and roseki as a balance.
A continuous casting nozzle for casting molten steel, wherein at least a surface layer of an inner bore of said continuous casting nozzle contacting with a molten steel is formed of a refractory comprising:
- an aggregate consisting essentially of zirconia (ZrO2) having a melting point of at least 1750° C., wherein said aggregate is present in an amount from about 15 to about 60 wt. %;
- and
- roseki as a balance;
- said refractory being added thermosetting resin as binder, kneaded, formed, and sintered in an anti-oxidizing atmosphere.
Dependencies are inferred from the claim text.