Abstract：In order to realize high casting speed production in tinplate, the effects of nozzle angle, nozzle immersion depth, casting speed and magnetic field intensity on characteristics of flow field under the condition FC mold were studied by mathematical model and industrial test. The results show that the electromagnetic force near the narrow surface in the lower magnetic field increases obviously with the increase of nozzle angle, immersion depth and casting speed, and the magnetic field below the nozzle can effectively reduce the erosion of nozzle outlet jet on the narrow surface. The symmetry of flow velocity on both sides of the nozzle was improved after applying magnetic field, and the level profile in mould was relatively stable. When BUwas equal to 0.5BL, the fluctuation of mould level was the smallest. Inclusions decreased significantly by applying magnetic field, the number density of inclusions at the edge > 10 μm decreased from 0.134 to 0.079/mm2, the number density at one quarter decreased from 0.129 to 0.074/mm2, and the number density at the center of width decreased from 0.100 to 0.073/mm2.The average depth of hook decreases from 2.3 to 1.7 mm and the average length of hook decreases from 2.3 to 2.0 mm. The growth of the hook can be inhibited by appropriate electromagnetic parameters. By optimizing the parameters of FC mold, the defects of alumina and mold powder in tinplate are reduced by 77.8% and 82.6% respectively, and the casting speed of 2.0 m/min is realized in industry.
黄财德,何文远,刘延强,肖茂元,安泽秋,杨晓山. 电磁制动对镀锡板高拉速结晶器内流场的影响[J]. 钢铁, 2019, 54(8): 90-101.
HUANG Caide,HE Wenyuan,LIU Yanqiang,XIAO Maoyuan,. Effect of electromagnetic braking on flow field in #br#
tinplate under high casting speed. Iron and Steel, 2019, 54(8): 90-101.
