# US 2015/0144291 A1 · Continuous casting equipment

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- Number: US 2015/0144291 A1
- Document ID: US20150144291A1
- Status: Published application
- Kind: A1
- Application number: 14/385,058
- Filed: 2012-03-28
- Published: 2015-05-28
- Earliest claimed: 2012-03-28
- Assignees: Arcelormittal Investigacion Y Desarrollo, S.L.
- Inventors: Mathieu Brandt; Jean-Paul Fischbach; Paul Naveau
- Web page: https://patentgrep.com/patent/US20150144291A1

## CPC

- B22D 11/103: Distributing the molten metal, e.g. using runners, floats, distributors
- B22D 11/112: by accelerated cooling
- B22D 41/50: Pouring-nozzles
- B22D 41/60: with heating or cooling means
- B22D: CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES (shaping of plastics or substances in a plastic state B29C; metallurgical processing, selection of substances to be added to metal C21, C22)

## Abstract

Continuous casting equipment for a flow of liquid metal from a tundish into a mould is provided. The equipment includes a vertical duct disposed upstream of the mould with respect to the direction of travel of the liquid metal. The duct includes from upstream to downstream a refractory ring, a copper tube with an internal diameter D and a submerged entry nozzle. A dome is disposed inside the refractory ring and includes a sloped upper part, the upper part is defined so as to deflect the liquid metal coming from the tundish towards the inner walls of the vertical duct. The diameter D of the copper tube ranges between a minimum diameter equal to Q/3.75 and a maximum diameter equal to Q/1.25, where Q is the nominal liquid metal flow rate of the equipment and is between 200 and 800 kg/min and D is the diameter expressed in mm.

## Claims

### Claim at position 1

1-9. (canceled)

### Claim 10

Continuous casting equipment for a flow of liquid metal from a tundish into a mould, the equipment comprising:
a vertical duct disposed upstream of the mould with respect to the direction of travel of the liquid metal, the duct including from upstream to downstream a refractory ring, a copper tube with an internal diameter D and a submerged entry nozzle;
a dome disposed inside the refractory ring and including a sloped upper part, the sloped upper part being defined so as to deflect the liquid metal coming from the tundish towards inner walls of the vertical duct;
the diameter D of the copper tube ranging between a minimum diameter equal to Q/3.75 and a maximum diameter equal to Q/1.25, where Q is a nominal liquid metal flow rate of the equipment and is between 200 and 800 kg/min and D is the diameter expressed in mm,
a slope α of the sloped upper part of the dome ranges from 25 to 15°.

### Claim 11 (depends on 10)

The continuous casting equipment according to claim 10, wherein the dome further comprises a lateral side extending from the upper part of the dome down to a bottom part of the dome, the lateral side forming at the intersection with the upper part a sharp fillet with a radius of curvature of 2 mm or less.

### Claim 12 (depends on 11)

The continuous casting equipment according to claim 11, wherein a gap e between the sharp fillet and the refractory ring ranges from 10 to 25 mm.

### Claim 13 (depends on 11)

The continuous casting equipment according to claim 11, wherein a distance h between the bottom of the dome and a top of the copper tube ranges from 10 to 50 mm.

### Claim 14 (depends on 10)

The continuous casting equipment according to claim 10, wherein the sloped upper part of the dome further comprises at least one support arm with a fixing part to secure the dome to the refractory ring, the fixing part having a width C ranging from 10 to 60 mm.

### Claim 15 (depends on 14)

The continuous casting equipment according to claim 14, wherein the at least one support arm comprises an additional part extending from the fixing part along a lateral side of the dome, the part being designed to direct the flow of liquid metal around and below the at least one support arm.

### Claim 16 (depends on 15)

The continuous casting equipment according to claim 15, wherein the additional part has converging lateral walls.

### Claim 17 (depends on 10)

The continuous casting equipment according to claim 10, wherein the dome is made up of high alumina.

### Claim 18 (depends on 10)

A continuous casting process for a flow of liquid metal at a nominal flow rate of Q between 200 and 800 kg/min comprising the steps of:
using the continuous casting equipment according to claim 10.