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首页> 外文期刊>ISIJ international >Inclusion Characteristic in Tinplate Steel in RH Refining and Kinetics Limitation of Calcium Transfer by Refining Slag
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Inclusion Characteristic in Tinplate Steel in RH Refining and Kinetics Limitation of Calcium Transfer by Refining Slag

机译：通过精炼渣在RH精炼和动力学钙的RIN板钢中夹杂物特性

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The characteristics of inclusions including composition, morphology, number, and size in tinplate steel were studied by industrial experiments and thermodynamic calculations during the RH refining process. The results indicated that two types of Al_(2)O_(3) inclusions including cluster and single-particle are generated at first after Al addition. With the slag-metal and refractory-metal reactions, Al_(2)O_(3) inclusions, CaO·Al_(2)O_(3) inclusions, MgO·Al_(2)O_(3) spinel inclusions, and CaO–MgO–Al_(2)O_(3) ternary system inclusions are found in the middle of RH refining. Only single-particle Al_(2)O_(3), CaO·Al_(2)O_(3) inclusions with high melting point, and CaO–MgO–Al_(2)O_(3) ternary system inclusions are found at the end of RH refining. From Al addition to the end of RH refining, the total number of inclusions showed a decreasing trend and the proportion of the number density decreased by 70%. About 62% of inclusions are smaller than 10 μ m at the end of RH refining, which are difficult to be removed from the liquid steel. The mass transfer of Ca from the refining slag to the liquid steel has a significant effect on the content of [Ca] in liquid steel. Al_(2)O_(3) inclusions generated in liquid steel can only be modified to CaO·Al_(2)O_(3) inclusions in the present RH refining time. Aiming to generate 12CaO·7Al_(2)O_(3) inclusions quickly, moderate calcium treatment as a supplementary measure for refining slag is recommended to modify inclusions during the RH refining process.
机译：通过工业实验和RH精炼过程中的工业实验和热力学计算研究了TINOPLE钢中包括组成，形态，数量和尺寸的夹杂物的特征。结果表明，在Al加法后，首先在第一次产生包括簇和单粒子的两种类型的AL_（2）O_（3）夹杂物。用渣 - 金属和耐火金属反应，Al_（2）O_（3）夹杂物，CaO·Al_（2）O_（3）夹杂物，MgO·Al_（2）O_（3）尖晶石夹杂物，以及CaO-MgO -al_（2）O_（3）三元系统夹杂物在RH精炼的中间找到。只有单粒子AL_（2）O_（3），CAO·AL_（2）O_（3）具有高熔点的夹杂物，并且在最后发现CAO-MGO-AL_（2）O_（3）三元系统夹杂物Rh Refining。从RH精炼结束的AL除了中，夹杂物的总数表明趋势的降低，数量密度的比例降低了70％。在RH精炼结束时约62％的夹杂物小于10℃，难以从液体钢中除去。从精炼渣到液钢的Ca的传质对液钢中的[Ca]的含量显着影响。在液钢中产生的Al_（2）O_（3）夹杂物只能在目前RH精炼时间内修改到CaO·Al_（2）O_（3）夹杂物。旨在产生12CaO·7AL_（2）O_（3）含量快速，适度钙处理作为精炼渣的补充措施，以在RH精炼过程中修改夹杂物。

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