Design of Swirling Flow Submerged Entry Nozzles for Optimal Head Consumption between Tundish and Mold

Tukaguchi, Yuichi; Nakamura, Osamu; Jönson, Pär et al.

ISIJ International, 2007, 47(10), 1436-1443

Number of Access:554（2025-09-03 08:30 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/26406

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Title
Design of Swirling Flow Submerged Entry Nozzles for Optimal Head Consumption between Tundish and Mold
Creator
CreatorName
Tukaguchi, Yuichi
NRID
1000000400466 1000000400466
CreatorName
Nakamura, Osamu
CreatorName
Jönson, Pär
NRID
1000080049692 1000080049692
CreatorName
Yokoya, Shinichiro
NRID
1000010179773 1000010179773
researchmap permalink
read0013978 read0013978
CreatorName
Tanaka, Toshihiro
NRID
1000090029116 1000090029116
CreatorName
Hara, Shigeta
Subject
continuous casting
submerged entry nozzle
swirling flow
swirl blade
potential energy
head
water model
Abstract
A technology of swirling flow formation in a submerged entry nozzle is proposed as an effective measure for controlling the flow pattern in a continuous casting mold. As a result of a joint study between Nippon Institute of Technology, Osaka University, Kyushu Refractories, and Sumitomo Metal Industries, swirling flow submerged entry nozzles with a swirl blade for steel slab casting have been developed to improve the productivity of the process and the surface quality of slabs and coils.The swirl blade in the submerged entry nozzle forms the swirling flow expending the potential energy between the tundish and the mold. Thus, the swirl blade and the internal shape of the submerged entry nozzle, which determine the swirling flow rate, should be designed considering the flow rate in the nozzle and the head between the tundish and the mold of the applied casting machine.From full-scale water model experiments, we obtained an empirical equation to estimate the required head between the tundish and the mold from the flow rate, the internal shape of the nozzle, and the specification of the swirl blade. Then, we investigated energy efficiency to create the swirling flow, using an empirical equation from the results of a water model experiment and a numerical analysis of the swirling flow in the nozzle.The obtained empirical equation is valuable to design swirling flow submerged entry nozzles adopted for various casting conditions.
Publisher
日本鉄鋼協会
The Iron and Steel Institute of Japan
ニホン　テッコウ　キョウカイ
Source Title
ISIJ International
Volume (Issue)
47(10)
Page
1436-1443
Date of Issued
2007
Language
English
Handle URL
https://hdl.handle.net/11094/26406
PISSN
09151559
NCID
AA10680712
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.2355/isijinternational.47.1436
Access Rights
open access
CopyRight
© 2007 ISIJ
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article