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Electromagnetic stirrer arrangement with continuous casting of steel billets and blooms

A technology of electromagnetic stirrer and casting mold, which is applied in the direction of chemical instruments and methods, mixers, dissolution, etc.

Inactive Publication Date: 2012-07-11
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] While the mold assembly described above has proven adequate, there are still disadvantages

Method used

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  • Electromagnetic stirrer arrangement with continuous casting of steel billets and blooms
  • Electromagnetic stirrer arrangement with continuous casting of steel billets and blooms
  • Electromagnetic stirrer arrangement with continuous casting of steel billets and blooms

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Embodiment Construction

[0016] The inner diameter of the electromagnetic stirrer (EMS) influences the magnetic flux intensity value in the continuous casting mold. This in turn affects the rate of stirring in the melt caused by the magnetic field established by the EMS. At a constant external power input (in kVA) to the EMS, the magnetic flux intensity decreases as the inner diameter of the EMS increases. exist image 3 The figure shows this phenomenon. For illustration purposes, the curves indicate the typical inner diameter of the inner EMS of a mold with the same cross-sectional dimensions and the flux between the outer EMS of the mold shell assembly without foot rolls attached and the outer EMS of the mold shell assembly with foot rolls attached Strength value.

[0017] Such as image 3 It can be seen that the EMS diameter has a significant effect on the magnetic flux intensity when the power input and operating frequency are kept constant. The intensity of agitation in the melt is one of th...

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Abstract

An electromagnetic stirrer arrangement includes a housing having a bottom opening and a top opening. An electromagnetic stirrer is positioned inside the housing. A modular mold assembly includes a mold, a water jacket, a top plate, a bottom plate and a plurality of rods connecting the top and bottom plates. The mold has an open top and an open bottom. The top plate is positioned proximate to the open top of the mold and the bottom plate is positioned proximate to the open bottom of the mold. The connecting rods extend between and securing together the top and bottom plate. The modular mold assembly can easily be replaced by inserting it into or removing from the housing

Description

technical field [0001] The present invention relates to the field of electromagnetic stirring for continuous casting of steel, and more particularly to electromagnetic stirrer devices and continuous casting mold assemblies. Background technique [0002] In the production of continuously cast billets and ingots, two types of Electromagnetic Stirrer (EMS) devices are generally used with respect to continuous casting molds, namely internal and external. [0003] In internal EMS installations, the agitator is located inside the mold housing. The stirrer is thus relatively close to the mold in which the solidified steel is contained. now refer to figure 1 , which shows a cross-sectional view of an exemplary internal EMS continuous casting mold assembly. The assembly includes a mold 1 , a water jacket 2 , an electromagnetic stirrer (EMS) 3 and a mold housing 4 . The stirrer 3 is a multi-phase device of the rotary type, commonly used in applications where liquid steel (not show...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/12B01F13/00B22D27/02
CPCB22D11/115
Inventor D·A·多曼斯基L·贝特尔曼C·P·卡兰T·P·马尔卡西
Owner ABB (SCHWEIZ) AG