为了验证两段式软接触电磁连铸结晶器的透磁效果, 测试了两段式结晶器内部的磁感应强度及弯月面高度, 并与传统结晶器进行比较, 结果表明：(1) 两段式结晶器的透磁效果随结晶器壁厚的减小而增强, 当结晶器的壁厚 为5 mm时, 两段式结晶器内部的磁感应强度比传统结晶器增大71.3%；(2) 两段式结晶器内部的磁感应强度随电 源功率和线圈位置的提高而增强；(3) 随电源功率的增加, 两段式结晶器内金属液的弯月面高度随之增大, 电源功 率为10、20和30 kW时对应的弯月面高度分别为2.9、4.7和8.2 mm.
In order to know the penetration of magnetic field in two-stage slitless mold for soft-contact electromagnetic continuous casting, the magnetic flux density and the height of meniscus in two-stage mold and conventional mold were compared through experimental measurement. The results show that (1) the stainless steel cover can prevent the magnetic lines of flux going into mold from the top of mold. It is beneficial to the measurement of magnetic penetration with a cover on the mold. (2) The magnetic flux density increases with the thickness of mold decreasing when frequency is 25000 Hz. The magnetic flux density in two-stage mold is less than that in conventional mold when d=10 mm, but the magnetic flux density in two-stage mold is more than that in conventional mold when d=7 mm, and the penetration of magnetic field in two-stage mold is 4.5 times than that in conventional mold when d=5 mm. (3) The penetration of magnetic field and meniscus in two-stage slitless mold becomes high enough by changing the structural and electromagnetic parameters.
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