Patent ID: 9573189
Date: 2017-02-21
CPC Classifications: B22D

Claim:
1. A submerged nozzle for continuous casting of molten metal, wherein two or more discharge hole flow passages are provided on a cylindrical side surface of a submerged nozzle having a nozzle hole, and first and second inner surface side walls and first and second outer surface side walls of the discharge hole flow passages in a horizontal cross-section of the submerged nozzle when in use are composed by straight lines formed so as to be inflected at an inner side point of inflection and an outer side point of inflection, wherein the discharge hole flow passages in the horizontal cross-section of the submerged nozzle when in use are composed by straight lines formed so as to be inflected at the outer side point of inflection and an angle β of 15° to 85°, wherein the angle β is formed between a first center line between the two straight lines, and extension lines thereof, formed by the first inner surface side wall and the first outer surface side wall on the inner side of the submerged nozzle from the inflection section in the discharge hole flow passage, and a second center line between the two straight lines, and extension lines thereof, formed by the second inner surface side wall and the second outer surface side wall on the outer side of the submerged nozzle from the inflection section.