(東北大學 材料電磁過程教育部重點實驗室， 沈陽 110004)
摘 要: 通過靜態(tài)熱模擬實驗， 采用低熔點Sn-32%Pb-52%Bi(質(zhì)量分數(shù))合金作為鋼液的模擬介質(zhì)， 研究不同工藝參數(shù)下矩形電磁軟接觸連鑄結晶器內(nèi)彎月面行為的變化規(guī)律。 結果表明： 由于矩形電磁軟接觸結晶器本身的結構限制，其彎月面沿周向上的分布具有不均勻性； 隨電源功率增大， 彎月面高度增大， 同時波動加劇； 實際生產(chǎn)中線圈應盡量靠近結晶器口部位置安裝， 有利于提高彎月面高度和增強彎月面穩(wěn)定性；澆注過程中， 應該使?jié)沧⒁好姹M可能的控制在線圈中心偏上位置； 當電源頻率增大時， 應該同時適當?shù)奶岣唠娏鱽肀ＷC軟接觸效果。
關鍵字: 電磁軟接觸； 連鑄； 彎月面形狀； 結晶器
WANG En-gang, HE Ji-cheng
（Key Laboratory of Electromagnetic Processing of Materials,
Ministry of Education, Northeastern University, Shenyang 110004, China）
Abstract: According to different technological parameters, meniscus shapes were investigated experimentally. A low-melting-point alloy of Sn-32%Pb-52%Bi was used to simulate the molten steel, and a high frequency magnetic field was applied for realizing soft contacting. The results show that the shape of meniscus is non-homogeneous because of the structure of the rectangular mold, and the height of meniscus will enlarge as increasing the power, and at the same time the meniscus fluctuate aggregately. The coil should be placed near the top of the mold and the initial free surface level should be placed in the middle of the coil in practice. The coil current should be enhanced to ensure the effects of soft-contact electromagnetic continuous casting (EMCC) when increasing the input frequency.
Key words: electromagnetic soft-contact; continuous casting; meniscus shape; mold
