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Electromagnetic Stirring System for Billet

Electromagnetic Stirrer for alloy steel
Electromagnetic Stirrer for alloy steel
Electromagnetic Stirrer for tool steel
Electromagnetic Stirrer Body(3)
Electromagnetic Stirrer
Electromagnetic Stirrer for  steel mill
Product Name : Electromagnetic Stirring System for Billet
Product ID : 2

Basic Description of EMS(Electromagnetic Stirring System)

EMS consists of coil, electric controller and cooling water system, electric control system consists of IPC, local control and inverter cabinet. 


                      Complete EMS System Configuration

Technical Features of KEMEIDA EMS
A new algorithm has been developed by KEMEIDA and GL electromagnetic field software Co., names AGILD EM stirring algorithm, which uses new strip magnetic field differential integral equation. 
This software can design electromagnetic parameters optimized. EMS shall be with high magnetic induction and stirring force. So stirring effect shall be great. 
Stirring force can be calculated by this software according to different frequency and current. So the best frequency and current can be provided for user. 
Optimized design shall be done for L/D. Iron core length shall be increased properly. So stirring effect shall be improved. 
Kemeida has also other software for designing F-EMS to calculate ideal position of F-EMS. 
Kemeida EMS uses low voltage and large current, which can avoid damage of peak voltage to insulation. It shall make reduce current leakage and prolong EMS life. 
Frequency arrange shall be widened to choose the best frequency. 
Put EMS lower properly to make magnetic field around meniscus as little as possible to ensure strong magnetic field. 

Metallurgical Effect

(1). Improving sub-surface and inner quality of steel

Increase equiaxed zone; 

Reduce central segregation, porosity and shrinkage efficiency; 

Reduce air holes, 

Pinholes and inclusion in the surface and subsurface; 

Make surface temperature of slab symmetrical

Reduce inner cracks; 

(2). Relax continuous casting production condition

Superheating ratio; 

Caster centering; 

(3). Expanding steel grade

Rimming steel; 

Free cutting steel; 

Ball bearing steel

Bearing quality steel and so on; 

According to different installation positions and combinations are divided into three modules as following: 

(1) Mould EMS: MEMS: 

EMS  installed in the mold zone, adopting rotary magnetic field. The rotary motion  be grow up in liquid steel

(2) Strand EMS: SEMS

EMS is installed the secondary cooling zone, adopting the rotary magnetic field or traveling wave field. The rotary motion or rectilinear motion will grow up in liquid steel. 

(3) Final Solidification Zone: FEMS

EMS is Installed the mold zone, normally, adopting rotary magnetic field. The rotary motion will grow up in liquid steel. 

Metallurgical Effect in light of Installation Position



Metallurgical Effect

Application Steel


Cleaning solidification surface

Cutting crystal

Reducing overheat

Increasing the equiaxed rate

Reducing surface and sub-surface air hole and pinhole

Reducing surface and sub-surface slag including

Homogenize solidified shell

Improving center shrinkage and center segregation

Low alloy steel

Spring steel

Cold roll steel

Medium and high carbon steel


Cutting crystal

Reducing overheat

Expand the equiaxed rate

Reducing the inner crack

Improving shrinkage

Reducing center porosity

Stainless steel

Tool steel


Well-distributed the element of liquid steel

Break the columns crystal

Refining grains

Improving the center segregation and V-type   segregation effectively

Improving the center shrinkage and porosity

Spring steel

Bear steel

Special high carbon steel

Guidance for Model Selection
1. Arc radius of CCM, Strand space, pulling speed. 
2. Parameters of Mould. 
3. Steel grade, Cross section. 
4. Power phase. 

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