【摘要】 在连续铸钢中采用电磁搅拌技术,可以有效的改善铸坯质量。本文报导了电磁搅拌(EMS)对炭素钢连铸坯质量的影响,并提出了几点初步看法:更多还原

【Abstract】 This paper presnts the influence exerted upon the quality of carbon slab by EMS. The experimental results abtaned are as foll1. Evident effects of EMS on the solidified structure of slab have been bserved which is beneficial to the formation of equiaxed crystal under the condition of this experiment. The ratio equiaxed crystal in whole solidifieds ystem reaches its highest value when value of stirring intensity paramater I f~1/2 is 1500.2. Depending upon the stirring intensity highest flow rate of liquid steel Can be as high as 35 cm/sec3. EMS was exercised af the position which was 4.6 m below the meniscus of the mould. The stirring range was about 4.0 m along the casting d rection. The upper area was 2.0 to 2.6 m and the lower area was 4.6 to 6.0 m from the meniscus of the mould.4. when one-direction stir was adopted, the flow rates and flow direction of the liquid steelat the two sides along the wide direction of slab was different, as a result, the solidification structure was not symmeTrical and the "white bands" might appear.5. under the condition of this experiment, the distribution of in clusins at the inner eure side of the casted slab has two peak values.更多还原