Patent ID: 7290685
Filing Date: 2007-11-06
Classification: B22D

Abstract:
1. A sliding-nozzle plate for a sliding nozzle apparatus which is attached to a bottom of a container to control a pouring rate, comprising a plate with the following dimensions: (unit length is mm) (a) assuming that a diameter of a nozzle hole of the sliding-nozzle plate is “a”, the center position of an upper nozzle hole is X, the center position of a nozzle hole in a position where the nozzle of the plate is fully closed is Y, a stroke of the plate is a dimension S, a safety margin of the stroke is a dimension “m”, (b) a dimension from the center position X of the nozzle hole to the closest end of the sliding-nozzle plate in the longitudinal direction is a sum of a dimension “b” from the center position X to a hypothetical circle, which is inscribed within a hypothetical regular octagon having two opposite parallel segments defined by two edges of the sliding-nozzle plate parallel to the longitudinal direction, with the position X as the center and a dimension “d” from the hypothetical circle to the closest end in the longitudinal direction, and that (c) a dimension from the center position Y to the closest end of the sliding-nozzle plate in the longitudinal direction is a dimension “c”, and (d) “b”, “c”, “d”, S and “m” have respective following dimensions: b: a+30˜40 c: 0.75a+20˜30 d: 0.5a S: 2a+m m: 15˜35.