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Method and device for continuous casting of metals in a mold

一种铸造金属、铸模的技术，应用在连续或半连续铸造例如钢的金属和合金领域，能够解决紊流、影响浇注实践工作状态和产品质量等问题

Inactive Publication Date: 2007-01-10
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These longitudinal fluid flows, according to their strength, cause significant turbulence in the melt at the meniscus and in the region adjacent to the meniscus, thus affecting the working conditions and product quality of the pouring practice

Method used

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  • Method and device for continuous casting of metals in a mold
  • Method and device for continuous casting of metals in a mold
  • Method and device for continuous casting of metals in a mold

Examples

Experimental program
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Embodiment Construction

[0023] figure 1 An apparatus for continuous or semi-continuous casting of metal according to an embodiment of the present invention is disclosed. The apparatus comprises a casting mold 1 open at both ends in the pouring direction, and means 2 for supplying the casting mold with hot melt. The device is equipped with a dual-coil electromagnetic stirring (EMS) system comprising a first induction coil 4 and a second induction coil 3 . The second induction coil 3 is arranged at the top of the casting mold and upstream of the first induction coil 4 . Thus, the first induction coil 4 is arranged downstream of the second induction coil 3 . The first induction coil 4 works as a stirrer and is powered by an alternating current generating an alternating magnetic field. The first induction coil 4 constitutes an AC electromagnetic stirrer, and is designed to cause the molten metal 7 in the casting mold 1 to generate a rotational movement around the longitudinal axis of the casting mold ...

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Abstract

A device for continuous or semi-continuous casting of metals, comprising a casting mold (1) which is open in both ends in the casting direction, means (2) for supplying melt to the mold (1), a first electromagnetic induction coil (4) energized by A.C. current and adapted to induce a stirring motion to the melt (7) in the mold (1), and a second electromagnetic induction coil (3) arranged upstream of the first induction coil (4) and adapted to control the stirring motion of the melt in the region adjacent to the upper free surface (5) of the melt. The second induction coil (3) is arranged to be interchangeably energized by either D.C. or A.C. current. The invention also relates to methods for control of stirring motion in a casting mold (1).

Description

technical field [0001] The present invention relates to a method and apparatus for the continuous or semi-continuous casting of metals and alloys such as steel in a casting mold which is open at both ends in the casting direction. Background technique [0002] It is a long-established practice in continuous casting steel operations to agitate molten steel in continuous casting molds by means of externally applied low frequency AC electromagnetic fields. Electromagnetic stirring, commonly known as EMS, is widely used in continuous steel casting to improve the quality of as-cast products and process productivity. It has been demonstrated that, in order to meet the conditions of different casting practices, it is necessary to control the stirring motion in the region immediately adjacent to the free surface of the melt, commonly referred to as the meniscus. A certain intensity of agitation motion is therefore required in the meniscus region in order to control surface and subs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/115B22D11/049B22D11/04B22D11/11B22D27/02
CPCB22D11/115
Inventor L·贝特尔曼
Owner ABB (SCHWEIZ) AG