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针对中间包水口冲击区钢流对自由液面扰动较大,会形成环流将大型夹杂物卷入浇注区的问题,某钢厂在原有控流装置的基础上,计划引入挡渣墙以防止该情况的发生。通过中间包水模型试验,研究了距包底不同高度和距水口冲击区不同距离时挡渣墙对中间包流场参数的影响。结果表明,设置挡渣墙有利于延长钢液在中间包内运动轨迹,峰值时间提高40.9%,但是,死区体积比增加6.2%;挡渣墙距离水口冲击区1 680 mm,下端距中间包包底400 mm时,有利于控制死区体积比,同时有效发挥其控制大型夹杂物进入浇注区的作用。
Aiming at the large perturbation of the free surface of the steel flow in the impingement zone of the tundish, a large-scale circulation of inclusions will be formed in the casting zone due to the circulation. A steel plant plans to introduce a slag-retaining wall on the basis of the original flow control device to prevent the The situation happened. Through the tundish water model test, the influence of the slag wall on the flow field parameters of the tundish at different heights from the bottom and different distances from the impact area of the outlet was studied. The results show that the setting of slag wall is beneficial to prolong the movement of molten steel in the tundish, the peak time is increased by 40.9%, but the volume ratio of dead space is increased by 6.2%; the slag wall is 1 680 mm away from the impact area of the nozzle and the lower end is away from the tundish At the bottom of the package 400 mm, it is helpful to control the volume ratio of the dead zone and effectively control the entry of large inclusions into the casting zone.