Complete EMS System Configuration
EMS consists of coil, electric controller and cooling water system, electric control system consists of IPC, local control cabinet and inverter cabinet.
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 best 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.
EMS behind the roller type
EMS behind the rollers also called box type of EMS, in the design of CCM, the internal supporting roller of the caster's arc should be non-ferromagnetic ones, by installing a travelling field EMS behind the non-magnetic roller, the travelling field of the EMS will force the steel liquid to produce horizontal movement. Our company helped the BAOSTEEL SS branch realize the localization of EMS behind the roller for slab.
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). Expending steel grade
Rimming steel;
Free cutting steel;
Ball bearing steel
Bearing quality steel and so on;
Guide for Model Selection
1. Arc radius of CCM, Strand space, pulling speed.
2. Parameters of Mould.
3. Steel grade, Cross section.
4. Power phase.
Package
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