论文部分内容阅读
在固—液界面前沿的富集层中，由于界面的张力差，引起粒子的运动，粒子的运动速度计算公式为：Ｖ＿ｌ＝（４／９ηＤ＿Ｌ）（１－Ｋ＿Ｅ）Ｃ＿ｏ（ｄ＿σ／ｄＣ＿Ｌ）ＲＶｓ×［１－（９／８）Ｒ（ｘ－Ｒ）］￣（－１）ｅｘｐ［－Ｖ＿ｓ（ｘ－δ）／Ｄ＿Ｌ］，用此公式分析了Ｆｅ－Ｏ、Ｆｅ－Ｔｉ、Ｆｅ－Ｓ等富集层中，Ａｌ＿２Ｏ＿３夹杂物与气泡的状态，阐明了粒子运动速度、铁水量、溶质度、夹杂物及气泡半径等的关系。分析表明，由于氧、钛、硫溶质的浓度差，小的Ａｌ＿２Ｏ＿３夹杂物或气泡向固相面运动并与之接触，夹杂物与气泡的运动速度随氧、钛、硫溶质浓度的增大而提高。
In the enriched layer at the front of the solid-liquid interface, the particle velocity is caused by the difference of the interface tension. The velocity of particles is calculated as: V_l = (4 / 9ηD_L) (1-K_E) C_o (d_σ / dC_L) RVs Fe-O, Fe-Ti, Fe-S (x-δ) / D_L] And other enriched layers, inclusions and bubbles of Al 2 O 3 state, clarified the particle velocity, molten iron, solute, inclusions and bubble radius and so on. The analysis shows that due to the concentration difference of oxygen, titanium and sulfur solutes, small Al 2 O 3 inclusions or bubbles move to the solid surface and come into contact with them, the movement speed of inclusions and bubbles increases with the concentration of oxygen, titanium and sulfur improve.