基于有限元分析的连铸机钢包回转台结构优化设计

本文利用先进的ANSYS工程分析软件对连铸机钢包回转台进行有限元分析,找出整个回转台的应力和变形的分布情况,分析出回转台的薄弱环节,并在有限元分析的基础上进行优化设计,使得优化后的回转台结构在刚度和强度上都有很大提高,从而有针对性地解决了工程实际问题.     

钢包用轻重质复合保温砖的研究与开发

精炼钢包永久衬用轻重质复合保温砖的重质部分相当于高铝砖，轻质部分相当于粘土质隔热砖。实际使用表明，采用轻重质复合保温砖作钢包永久衬，节能效果明显．可以获得显著的社会经济效益。     

硅质钢包内衬脱除层的研制与使用

以石英砂为主要原料，研制了一种硅质钢包内村脱除层。该脱除层用于铝镁浇注料整体浇注钢包内村时，可使包役期满的工作层顺利脱除；使永久层耐火材料得到保护；可节约耐火材料１．６２ｋｇ／ｔ钢。     

LF（钢包炉）固体合成渣脱硫工业性试验研究

以３０ｔＥＢＴ超高功率电炉为初炼炉和４０ｔＬＦ（钢包炉）作为精炼炉，使用ＣａＯ－ＣａＦ２系固体合成渣对Ｑ２３５钢进行钢包炉内脱硫工业试验，在本试验条件下，当ＥＢＴ电炉初炼钢液（Ｓ）初＝０．０３５％～０．０８１％时，最佳精炼渣碱度Ｒｂ＝（％ＣａＯ）／（％ＳｉＯ２）为２．０～２．６或Ｒｆ＝（％ＣａＯ）＋（％ＭｇＯ）／（％ＳｉＯ２）＋（％Ａｌ２Ｏ３）为１．５～２．０，渣指数（ＣａＯ）／（ＳｉＯ２）：（Ａ     

钢包炉（LF）精炼渣的作用及特性分析

介绍了钢包炉（ＬＦ）精炼渣的组成，并确定了用于不同钢种的渣料配比，理化性能及其精炼效果，为生产高洁净钢改善了精炼条件。     

永久层浇注料种类对钢包保温性能的影响

以某钢厂90 t整体浇注钢包为研究对象,利用ANSYS软件建立三维有限元模型,采用数值模拟方法对钢包盛钢过程的温度分布规律进行研究,比较钢包内衬永久层采用铝镁浇注料和轻质浇注料两种材料时对钢包保温性能的影响.研究结果表明:永久层采用轻质浇注料替代铝镁浇注料后,钢水平均温度提高7K,钢水温降速率降低0.35 K/min,永久层温度梯度增加17.5 K/mm,由于钢包外壳散热的减少每小时可以节能993.6 MJ,折合标煤为33.9 kg.数值模拟结果与测量数据基本吻合,其相对误差小于10％.     

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The phenomenon of inclusion removal by fine and uniform heterophases in the molten steel in the ladle was simulated in the water model. The movement behavior of small bubbles and inclusions was analyzed by using of high-speed video camera and image processing technology. Furthermore, the experiment in inclusion simulant removal by purifying agent in three ball-making modes was also carried out in the water model. The effects and causes of inclusion removal under different bubble generation method were analyzed to improve the cleanliness of molten steel. The results show that the purifying agent promotes the removal of inclusions. There is the phenomenon of the bubble capturing multiple inclusion simulants. The rate of inclusion removal by the heterophases at different time is higher than the rate of inclusion removal without small bubbles and the average number raises 13.66%. The composite sphere produced outer layer of purifying agent and the kernel of simulants is most likely to produce fine bubbles and to remove inclusions 100% in three ball-making modes. Because the bubbles are generated, the bubbles impact on the core material to promote cracking of the purifying agent, so more bubbles are generated.     

精炼钢包缝隙式透气砖内钢液渗透行为

 研究分析了钢包缝隙式透气砖内钢液的渗透机理,并依据缝隙内渗透金属液的动量守恒及能量守恒,建立了描述缝隙内钢液渗透的数学模型,对钢液渗透的动力学行为进行了研究,理论计算结果与试验数据进行了对比。研究结果表明,透气砖缝隙内钢液渗透主要是由于黏附力达到极限导致的,渗透一旦发生,金属液会在较短时间内迅速渗入透气砖缝隙;受缝隙长度影响,钢液的渗透过程存在不稳定渗透阶段,之后渗透深度达到最大值,并不再发生变化,研究结果为底喷粉元件抗渗透性设计提供了依据。     

提高提钒炼钢双联工艺钢包寿命的技术措施

介绍了钢包侵蚀机理及承钢100 t转炉系统钢包使用现状,对影响钢包寿命的耐火材料性能、冶炼工艺条件、LF炉工艺条件、生产运行方式等因素进行了分析,指出承钢现阶段工艺条件下,钢包渣线砖的耐侵蚀性能已成为提升钢包寿命的关键因素,采取精炼石灰加入制度、钢包综合砌筑工艺、合理组织生产等措施后,有效提高了钢包寿命。     

Development of Ultra-Low Oxygen Automobile Gear Steel

In view of process conditions of Vanadium Recovery and Steelmaking Plant, PanGang Group Panzhihua steel and Vanadium Co.,Ltd., and on the basis of making choice of a reasonable deoxidization process, some measures have been taken to the development of automobile gear steel (20CrMoH) such as the pre-refining technology during converter tapping, "white slag" refining in LF, RH Vacuum treatment, and even protective casting technology. Also different and suitable models of argon blowing from bottom of ladle were adopted in the platform after converter, LF refining and calcium treatment. Test results show that the high cleanness 20CrMoH gear steel slab with T[O] ≤15×10-6(The average T[O] is 11.8×10-6) could be obtained through all these measures.