Title:
GAS BLOWING UPPER NOZZLE AND CONTINUOUS CASTING METHOD
Document Type and Number:
Japanese Patent JP2023173982
Kind Code:
A
Abstract:
To provide a gas blowing upper nozzle which can prevent gas leak, and a continuous casting method using the same.SOLUTION: A gas blowing upper nozzle comprises a refractory material (1) containing a gas permeable material (1B) and a metal case (2) surrounding an outer periphery of the refractory material (1), and has an upper end metal case (3) which extends to an inner side from an upper end part of the metal case (2). In the gas blowing upper nozzle, an upper end of a seal mortar part (4) the rectory material (1) and the metal case (2) is covered with the upper end metal case (3). A continuous casting method installs the gas blowing upper nozzle at bottom of a tundish, and pours a molten steel into a casting mold from the tundish via the gas blowing upper nozzle while blowing an inert gas into the gas permeable material.SELECTED DRAWING: Figure 1
Inventors:
OKAMOTO SHINGO
YAMASAKO YOSHINORI
SHIMIZU SATORU
YAMASAKO YOSHINORI
SHIMIZU SATORU
Application Number:
JP2022086565A
Publication Date:
December 07, 2023
Filing Date:
May 27, 2022
Export Citation:
Assignee:
JFE STEEL CORP
International Classes:
B22D11/10; B22D41/58
Attorney, Agent or Firm:
Patent Attorney Ginza Maronnier Patent Office