Method and device for a combined continuous casting and rolling system

Patent metadata

Field	Value
Publication number	US-9796006-B2
Application number	US-201314420395-A
Country	US
Kind code	B2
Filing date	Jul 4, 2013
Priority date	Aug 20, 2012
Publication date	Oct 24, 2017
Grant date	Oct 24, 2017

Abstract

A method and device for producing hot-rolled products in a combined continuous casting and rolling system includes a device for separating and removing. In order to overcome a disruption in production in a part of the system located downstream of the device for separating and removing, the method includes: (a) separating the endlessly produced precursor material into a strand portion with shears; (b) clamping the strand portion; (c) raising the trailing part of the strand portion from the roller table by a raising device, so that the strand portion is drawn away from the shears in the direction of transport; (d) cutting the precursor material into a precursor material portion with the shears; (e) removing the precursor material portion from the roller table, and removing the strand portion until the combined continuous casting and rolling system is ready to operate again.

First claim

The invention claimed is:

1. A method for manufacturing hot-rolled strip in a continuous casting-rolling installation comprising:
1) performing an endless operation comprising solidifying a strand with slab or thin slab cross-section of an endless strand-cast preliminary material, after complete solidification of the strand, passing the strand uncut through a cutting up and delivery device on a roller table in a transport direction, subsequently hot-rolling the strand in a finishing rolling train, then cooling down, cutting and storing the hot rolled material or strip;
2) for bridging an interruption in production in a part of the installation which is located downstream in the transport direction from the cutting up and delivery device, the method further comprising performing the following steps in the cutting up and delivery device:
a) cutting off the endless strand-cast preliminary material into a strand portion by using shears;
b) clamping the strand portion by a clamping device pressing a pair of opposing rollers onto the strand portion downstream of the strand raising device in the transport direction, thereby immobilizing the strand portion against movement in the transport direction;
c) raising a trailing tail part of the strand portion from the roller table using a raising device for pulling the tail part of the strand portion away from the shears in the transport direction;
d) cutting the preliminary material that is passing the shears to form a preliminary material portion using the shears;
e) delivering the preliminary material portion from the rolling table using a delivery device, and
f) removing the strand portion until the operational readiness of the continuous casting-rolling installation is restored.

2. The method as claimed in claim 1 , further comprising raising the tail part of the strand portion in a vertical direction using a raising bar.

3. The method as claimed in claim 1 , further comprising during the cutting of the preliminary material, the shears cutting off the passing preliminary material into preliminary material portions.

4. The method as claimed in claim 3 , further comprising during the delivering, pushing the preliminary material portion away transversely to the transport direction.

5. The method as claimed in claim 3 , wherein the cutting off of the passing preliminary material is into the portions having a length of 8 to 14 m.

6. The method as claimed in claim 1 , further comprising during the removing, lifting the strand portion in a vertical direction using a crane.

Assignees

• Primetals Technologies Austria GmbH

Inventors

• Lengauer Thomas
• Peitl Wolfgang
• Winkler Roman

Classifications

• B22D11/126

  for cutting · CPC title

• B22D11/124

  for cooling · CPC title

• B22D11/12 Primary

  Accessories for subsequent treating or working cast stock in situ (rolling immediately subsequent to continuous casting B21B1/46, B21B13/22) · CPC title

• B21B2015/0014

  transversely to the rolling direction · CPC title

• B21B15/0007

  Cutting or shearing the product · CPC title