共查询到19条相似文献,搜索用时 109 毫秒
1.
2.
5 关于钢包精炼5.1 钢包精炼的总体设想鞍钢新区的产品方针是“以产顶进”,因而对产品质量要求十分严格。钢包精炼设施作为产品质量控制的关键环节,必须功能齐全,工艺灵活,以适应多档次产品结构生产工艺的要求。新区炼钢炉外精炼设施应具备如下功能。5.1.1 钢液搅拌功能 相似文献
3.
为配合氧气转炉或超高功率电弧炉而发展起来的钢包精炼法,可说是“五花八门”,方兴未艾。本文就V—KIP(Vacuum Kimizuinject process)钢包精炼法作一介绍,以供参考。一、V—KIP钢包精炼装置概况V—KIP装置是将真空脱气的功能和钢包钢液喷入粉体的精炼功能合而为一的精炼 相似文献
4.
5.
6.
目前 ,北满特殊钢股份公司一电炉分厂配有LF ,LFV精炼设备 ,专用的精炼钢包容量为 40t。精炼时间一般为 90~ 1 1 0min ,钢水温度 1 5 1 0~1 670℃。精炼钢包的构成如图 1所示。钢包精炼时 ,使用电弧加热 ,使靠近电弧处的钢包衬局部过热 ;因此 ,工作层耐火材料的选择特别重要。图 1 精炼钢包的构成Fig .1 Constructionofrefiningladle表 1 精炼过程中熔渣成分的变化Table 1 Changeofslagingredientduringrefining名称 熔渣成分 %精炼前期精炼后期C… 相似文献
7.
提高精炼钢包使用寿命及降低钢包耐材成本的途径 总被引:1,自引:0,他引:1
钢包既盛装钢水,又作为精炼设备,因此,精炼工艺的改进对钢包内衬耐火材料的使用有着较大的影响。同时通过选用优质适价且适应于钢包精炼工艺的耐火材料,优化钢包内衬修砌工艺,加强钢包修砌运行管理,建立科学合理的耐材判废标准,可有效提高钢包内衬使用寿命,降低成本消耗,从而保证生产顺行。 相似文献
8.
9.
10.
本文论叙了炉外精炼的特点及其对耐火材料的要求;对目前国内外炉外精炼钢包渣线部位用耐火材料的化学组成和高温物理性能作了较为系统的阐述。为提高精炼钢包的使用寿命,从技术经济方面综合考虑,提出了精炼钢包渣线部位用耐火材料的选择原则——炉渣碱度、精炼温度、精炼时间、精炼钢种、搅拌强度和真空度等。文章还对重庆特殊钢厂15吨VOD-VHD精炼炉钢包渣线砖的使用情况和损毁机理进行了分析探讨。 相似文献
11.
12.
13.
新型保温材料在钢包隔热层上的应用研究 总被引:1,自引:0,他引:1
介绍了安钢第一炼轧厂在100t钢包采用新型纳米材料作为隔热层的工艺试验。生产实践表明,该新型钢包保温性能良好,能够减少钢包散热、降低精炼电耗、稳定中包钢水温度,这一生产应用取得了良好的工艺效果和经济效益。 相似文献
14.
15.
An in‐depth SEM‐investigation of the inclusion composition change in the ladle refining process during tool steel production was done. Plant trials were carried out at Uddeholm Tooling AB in Hagfors, Sweden. A series of samples was taken during ladle refining, from deslagging through vacuum treatment. The goal was evaluating the effects of the top slag and other process parameters on the inclusion composition during ladle refining. The main conclusion was that normal variations in the process have a large influence on inclusion composition. Furthermore, it was concluded that the MgO content in the top slag had a large influence on the inclusion composition throughout the whole ladle refining process. Also, the SiO2 content in the ladle slag originating from the EAF‐slag, had a noticeable effect on the inclusions. The inclusions belonging to the system Al2O3‐CaO‐MgO‐SiO2 showed a continuous composition change throughout the ladle refining process, from high Al2O3, via MgO‐spinel to finally complex types rich in CaO and Al2O3. 相似文献
16.
17.
18.
André Zimmer lvaro Niedersberg Correia Lima Rafael Mello Trommer Saulo Roca Bragana Carlos Pérez Bergmann 《钢铁研究学报(英文版)》2008,15(3):11-0
The heat transfer in a steelmaking ladle was studied. The evaluation of heat transfer of the steel was performed by measuring steel temperature in points including all refining steel process. In the ladle, the temperatures in the refractories and the shell were also measured. To evaluate the thermal profile between the hot and cold faces of the ladle in the slag line position, an experiment which shows the importance of thermal contact resistance was carried out. Higher heat losses in the tapping and the vacuum were verified. The temperature measurements of the ladle indicate distinct thermal profiles in each stage of steel refining. Moreover, as each stage of the process depends on the previous one, the complexity of the ladle thermal control is incremental. So a complete model of heat losses in the ladle is complex. 相似文献
19.
水钢炼钢厂通过对100tLF炉的底吹氩系统、喂丝导管进行改造,对成分调整工艺、造渣工艺进行优化,对精炼过程各工作步骤进行量化控制,提高了精炼效率,缩短和稳定了精炼周期,实现了连铸恒拉速控制。 相似文献