The Mold Electromagnetic Stirrer (M-EMS) is a crucial component in the mold zone of continuous casting machines used in the steelmaking process. Its primary role is to enhance the quality of the billet, the semi-finished solid steel product, by manipulating the behavior of the unsolidified molten steel.
The M-EMS operates by generating an electromagnetic force that accelerates the movement of the molten steel within the mold. This stirring action influences the flow dynamics, heat transfer, and the migration behavior of the molten steel as it solidifies. By controlling these factors, the M-EMS can significantly impact the microstructure and properties of the steel, leading to several key improvements:
Functionality:
Solidification Structure Improvement: The M-EMS ensures a more uniform solidification structure by influencing the solidification sequence and the formation of the steel's microstructure. This results in a more homogenous distribution of alloying elements and a reduction in macro-segregation.
Equiaxed Structure - Grain Refinement: The stirring action promotes the nucleation of new grains, leading to an equiaxed grain structure. This is characterized by a refined grain size, which is critical for enhancing the mechanical properties of the steel, such as its yield strength and ductility.
Surface Quality Improvement: By controlling the flow and solidification of the molten steel, the M-EMS helps to create a smoother surface on the billet. This reduces the occurrence of surface defects, which can affect the steel's appearance and performance in subsequent processing stages.
Pinhole and Blowhole Reduction: The M-EMS minimizes the formation of internal defects such as pinholes and blowholes. These defects can occur due to the entrapment of gases during solidification. By improving the flow and distribution of molten steel, the M-EMS reduces the likelihood of these defects forming.
In summary, the M-EMS is a sophisticated tool that plays a pivotal role in the continuous casting process. Its ability to control the behavior of molten steel during solidification leads to significant improvements in the quality of the billet, making it an indispensable piece of equipment for high-quality steel production.
| No. | Model | Voltage V | Current A | Frequency Hz | Flow m³/h | Dimension mm (In. Dia./Out. *H） | Weight Kg | Power Kw |
| 1 | DJMR-450SNF | 380 | 400 | 2-7（5） | 7 | φ450/φ715×440 | 500 | 79 |
| 2 | DJMR-475SNF | 380 | 400 | 2-7（5） | 7 | φ475/φ740×440 | 510 | 79 |
| 3 | DJMR-490SNF | 380 | 400 | 2-6（4） | 7 | φ490/φ765×440 | 520 | 79 |
| 4 | DJMR-540SNF | 380 | 500 | 2-6（4） | 7 | φ540/φ810×440 | 530 | 99 |
| 5 | DJMR-310CNE | 380 | 300 | 5 | 0.7 | φ310/φ590×465 | 465 | 59 |
| 6 | DJMR-360CNE | 380 | 400 | 5 | 1.1 | φ360/φ650×450 | 475 | 79 |
| 7 | DJMR-415CNE | 380 | 450 | 5 | 1.26 | φ415/φ730×460 | 480 | 89 |
| 8 | DJMR-465SW | 380 | 400 | 4.5 | 15 | φ590/φ870×350 | 618 | 79 |
| 9 | DJMR-470SW | 380 | 400 | 4.5 | 15 | φ460/φ784×535 | 919 | 79 |