| Title |
Effect of EMBR on the Fluid Flow of Molten Steel in the Continuous Casting Mold |
| Authors |
문기현(Ki Hyeon Moon) ; 이창현(Chang Hyun Lee) ; 차필령(Pil Ryung Cha) ; 윤우석(U Sok Yoon) ; 윤종규(Jong Kyu Yoon) |
| Abstract |
In order to solve problems involved with the curved type continuous caster and high speed casting by controlling the steel flow in the mold, the electromagnetic mold brake ruler (EMBR) using a static magnetic field was installed at No. 2 continuous casting plant of POSCO Kwangyang Works. Numerical modelling and plant tests were carried out to optimize the core type and operation condition of the EMBR. The core "Type A" located near the SEN outlets and shaped simple linear, had a detrimental effect on the slab quality. However, the core "Type B" located below the SEN with a magnetic insulator at the core center, reduced the defects of slab, especially at high throughput casting conditions. The optimum range of the surface velocity was found to be in 12∼20 ㎝/sec for reducing both the sub-surface and internal defects of slabs by plant tests with EMBR. The EMBR has been operated with the optimum magnetic density to preserve this surface velocity for each casting width and casting speed. |