# US 6,296,047 B1 · Endless casting rolling system with single casting stand

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- Number: US 6,296,047 B1
- Document ID: US6296047B1
- Status: Granted
- Kind: B1
- Application number: 09/315,844
- Filed: 1999-05-21
- Granted: 2001-10-02
- Earliest claimed: 1999-05-21
- Assignees: Danieli Technology, Inc.
- Inventors: Gianpietro Benedetti
- Web page: https://patentgrep.com/patent/US6296047B1

## CPC

- B21B 1/463: {in a continuous process, i.e. the cast not being cut before rolling}
- B21B 1/18: in a continuous process
- B21B 1/466: {in a non-continuous process, i.e. the cast being cut before rolling}
- B21B 43/00: Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed (conveying means in general B65G)
- B21B 45/00: Devices for surface {or other} treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills (B21B15/00, {B21B1/227 and B21B27/005} take precedence; technical features of scaling-off devices B21C43/00)
- B21B 45/004: {Heating the product}
- B21B 45/0215: {using liquid coolants, e.g. for sections, for tubes}
- B21B 45/08: hydraulically
- B21B: ROLLING OF METAL (auxiliary operations used in connection with metal-working operations covered in B21, see B21C; bending by rolling B21D; manufacture of particular objects, e.g. screws, wheels, rings, barrels, balls, by rolling B21H; pressure welding by means of a rolling mill B23K20/04)

## Abstract

An integrated plant for the production of elongated metal products, such as bars and rods, is described in which the product is initially cast in continuous caster equipment and conducted toward a rolling mill which is positioned in-line with the continuous caster equipment. A tunnel furnace is disposed between the continuous caster equipment and the rolling mill for heating, equalizing and/or holding the product at a predetermined rolling temperature and a descaling assembly operates to descale the product prior to delivery to the rolling mill.

## Claims

### Claim 1

Apparatus for the production of elongated rolled bar and rod product comprising:
continuous casting equipment for casting the bar and rod product in the form of a bloom in a one-line high-speed caster;
a roughing rolling mill positioned downstream of said continuous casting equipment in alignment with said one-line high-speed caster;
a controlled temperature conveyor extending between said continuous casting equipment and said roughing rolling mill for conveying said bloom;
an active tunnel furnace disposed intermediate said continuous casting equipment and said roughing rolling mill for the immediate charging of the bloom from the continuous casting equipment for heating, equalizing and holding said bloom to a predetermined rolling temperature;
a descaling assembly included between said active tunnel furnace and said rolling mill.

### Claim 2 (depends on 1)

Apparatus according to claim 1, including an on-line conditioning device between said active tunnel furnace and said roughing rolling mill.

### Claim 3 (depends on 1)

Apparatus according to claim 1, including a quenching box between said continuous casting equipment and said tunnel furnace.

### Claim 4 (depends on 1)

Apparatus according to claim 1, including an in-line shear between the continuous casting equipment and the tunnel furnace which is used to cut the bloom into billets during the change of the rolling sequence or during emergency events.

### Claim 5

A method for in-line casting and rolling a bloom for bar and rod product comprising the steps of:
continuously casting a bloom for bar and rod product in a one-line high-speed caster;
providing a roughing rolling mill in-line with the high-speed caster;
providing a controlled temperature conveyor extending between said high-speed caster and said roughing rolling mill; and
conveying the bloom from the high-speed caster to the rolling mill with said controlled temperature conveyor;
providing an active tunnel furnace between the high-speed caster and the roughing rolling mill and operating said active tunnel furnace to immediately receive the bloom from the high-speed caster and to heat up and equalize the temperature of the bloom at a predetermined rolling temperature;
descaling said bloom intermediate said active tunnel furnace and said roughing rolling mill; and
rough rolling the bloom as one continuous length bloom extending from the high-speed caster through the rolling mill, at a rolling entry speed substantially equal to a casting exit speed of the high-speed caster.

### Claim 6 (depends on 5)

A method according to claim 5, including the step of on-line conditioning the bloom between said active tunnel furnace and said roughing rolling mill.

### Claim 7 (depends on 5)

A method according to claim 5, including the step of providing a quenching box between said high-speed caster and said tunnel furnace.