Title:
MOLTEN-METAL INJECTION NOZZLE
Document Type and Number:
Japanese Patent JP2019209368
Kind Code:
A
Abstract:
To provide a molten-metal injection nozzle capable of securing a sufficient swirl-flow imparting effect while suppressing a nozzle blockage during an injection of molten metal.SOLUTION: A molten-metal injection nozzle includes a flow passage having a cross-sectional shape of oval or ellipse, in which the oval or ellipse has a longer diameter measuring 1.2 times or greater and 3 times or smaller of a shorter diameter, the oval or the ellipse has a longer-diameter direction 180° or more twisted continuously and in a given direction along a nozzle longitudinal direction, and a nozzle length required to twist the longer diameter direction of the oval or the ellipse by 90° is 0.35 time or greater and 3.5 times or smaller of a difference between the longer diameter and the shorter diameter.SELECTED DRAWING: Figure 1
Inventors:
TSUKAGUCHI YUICHI
Application Number:
JP2018109726A
Publication Date:
December 12, 2019
Filing Date:
June 07, 2018
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
B22D11/10; B22D41/50
Domestic Patent References:
| JPS632545A | 1988-01-07 | |||
| JP2002254162A | 2002-09-10 | |||
| JPH07303949A | 1995-11-21 | |||
| JP2002248551A | 2002-09-03 | |||
| JP2000117403A | 2000-04-25 |
Attorney, Agent or Firm:
Noriyuki Yamamoto
Akihiko Yamashita
Kishimoto Tatsuto
Akihiko Yamashita
Kishimoto Tatsuto