Method of producing round billets and its equipment

A technology for production equipment and round blanks, applied in metal processing equipment, workpiece surface treatment equipment, metal rolling, etc., can solve problems such as limited influence and inability to position forging equipment, so as to increase material density, ensure roundness and dimensional stability sexual effect

Inactive Publication Date: 2004-10-13
SMS DEMAG AG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that this method is clearly limited to large cross-sections, since the forging equipment cannot be positioned within the casting arc
[0009] Common to all the mentioned prior art is the limited influence of the different material concentrations on the billet cross-section, especially in the case of vertical round billet casters with horizontal discharge openings

Method used

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  • Method of producing round billets and its equipment
  • Method of producing round billets and its equipment

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Embodiment Construction

[0024] 1 represents a vertical round billet continuous casting machine with a horizontal outlet, in its crystallizer, a round billet with a thickness of 90-300 mm is poured and drawn down. The round blanks 2 are turned from the vertical into the horizontal in the arc-shaped frame section of the plant and are processed here in the manner according to the invention. For this purpose, the round billet, which still has a liquid core, is firstly descaled in the primary descaling device 3 and cooled at the same time in order to provide surface conditions for the subsequent rolling deformation of the round billet. The deformation takes place in a multi-stand rolling installation 4 which consists of three successive horizontal stands 5 which each have a circular sizing device formed by two transition radii. The last horizontal stand can be adjusted under the rolling load and is equipped with a roll gap adjustment mechanism corresponding to the gauge 8 for the width and thickness of th...

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Abstract

The invention relates to a process and device for the production of continuously cast billets in a production plant employs a vertical, round strand-casting machine with horizontal run-out, at least one descaling device, and several following roll stands. For the production of round billets with diameters in the range of 90-300 mm, after the solidifying round billet has left the mold but before it has entered the following rolling unit, its surface is descaled and the area near the surface is cooled in defined manner to a temperature which is optimum for the grade of steel in question before the round billet is worked, first over the course of at least three successive horizontal passes then in a vertical pass, the surface of the preworked billet being descaled again before the last pass.

Description

technical field [0001] The invention relates to a method for producing continuously cast slabs in a production plant consisting of a vertical round billet continuous casting machine with a horizontal discharge opening, at least one descaling device and a plurality of continuous rolling stands. Background technique [0002] In the solidified state, billets produced in vertical round billet casters with horizontal discharge openings have material concentration differences across the cross-section. Thus, in almost all steels, porous sites appear below the surface and in the billet core region. This is especially relevant for free-machining steels. Carbon-manganese steel has segregation in the core, which makes it difficult to produce, for example, high-strength wire. In high-carbon chromium steels, melt is formed in the core, which, for example, impairs the inner surface quality of precision-rolled tubes. Depending on the chemical composition, austenitic stainless chromium-n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/46B21B1/00B21B45/04B21B45/08B22D11/12
CPCB22D11/12
Inventor 英戈·冯哈根哈拉尔德·韦奥厄乌韦·奎特曼沃尔特·魏舍德尔
Owner SMS DEMAG AG
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