Molding facility

Patent metadata

Field	Value
Publication number	US-11027331-B2
Application number	US-201916959250-A
Country	US
Kind code	B2
Filing date	Feb 25, 2019
Priority date	Feb 26, 2018
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

Abstract

A molding facility in continuous casting enabling the quality of the cast slab to be achieved stably even if improving the productivity, the molding facility provided with a mold for continuous casting use, a first water box and second water box storing cooling water for cooling the mold, an electromagnetic stirring device imparting to molten metal in the mold an electromagnetic force causing a swirling flow to be generated in a horizontal plane, and an electromagnetic brake device imparting to a discharge flow of molten metal to an inside of the mold from a submerged nozzle an electromagnetic force in a direction braking the discharge flow, the first water box, the electromagnetic stirring device, the electromagnetic brake device, and the second water box being placed in that order from above to below at an outside surface of a long side mold plate of the mold so as to fit between a top end and bottom end of the long side mold plate, a core height H1 of the electromagnetic stirring device and a core height H2 of the electromagnetic brake device satisfying 0.80≤H1/H2≤2.33.

First claim

The invention claimed is:

1. A molding facility comprising
a mold for continuous casting use,
a first water box and second water box storing cooling water for cooling the mold,
an electromagnetic stirring device imparting to molten metal in the mold an electromagnetic force causing a swirling flow to be generated in a horizontal plane, and
an electromagnetic brake device imparting an electromagnetic force to a discharge flow of molten metal to an inside of the mold from a submerged nozzle in a direction braking the discharge flow, wherein
the first water box, the electromagnetic stirring device, the electromagnetic brake device, and the second water box being placed in that order from above to below at an outside surface of a long side mold plate of the mold,
a core height H 1 of the electromagnetic stirring device and a core height H 2 of the electromagnetic brake device satisfying a relationship shown in the following numerical formula (101):

0.80
≤

H
⁢

⁢
1

H
⁢

⁢
2

≤

2.33
.

(
101
)

2. The molding facility according to claim 1 , wherein the core height H 1 of the electromagnetic stirring device and the core height H 2 of the electromagnetic brake device satisfy the relationship shown in the following numerical formula (103):

1.00
≤

H
⁢

⁢
1

H
⁢

⁢
2

≤

2.00
.

(
103
)

3. The molding facility according to claim 2 , wherein a casting speed is 2.2 m/min or less.

4. The molding facility according to claim 1 , wherein the core height H 1 of the electromagnetic stirring device and the core height H 2 of the electromagnetic brake device satisfy the relationship shown in the following numerical formula (105):

1.00
≤

H
⁢

⁢
1

H
⁢

⁢
2

≤

1.5
.

(
105
)

5. The molding facility according to claim 4 , wherein a casting speed is 2.4 m/min or less.

6. The molding facility according to claim 1 , wherein the core height H 1 of the electromagnetic stirring device and the core height H 2 of the electromagnetic brake device satisfy the relationship shown in the following numerical formula (2):
H 1+ H 2≤500 mm  (2).

7. The molding facility according to claim 1 , wherein the electromagnetic brake device is comprised of a split brake.

8. The molding facility according to claim 1 , wherein a casting speed is 2.0 m/min or less.

Assignees

• Nippon Steel Corp

Inventors

• Okada Nobuhiro
• Oga Shintaro
• Tsukaguchi Yuichi

Classifications

• B22D11/055

  Cooling the moulds {(B22D11/04 takes precedence)} · CPC title

• B22D11/115 Primary

  by using magnetic fields · CPC title

• B22D11/04

  into open-ended moulds (B22D11/06, B22D11/07 take precedence; plants for continuous casting, e.g. for upwardly drawing the strand B22D11/14) · CPC title

• B22D11/16

  Controlling or regulating processes or operations · CPC title

• B22D11/041 Primary

  for vertical casting (B22D11/043, B22D11/049 - B22D11/059 take precedence) · CPC title