RH真空系统设备安装及气密性试验论述

论述了真空系统的安装注意事项及安装要求和真空系统气密性实验,真空系统为RH精炼炉的关键设备,安装要求高,只有以良好的安装质量为前提,才能保证整个RH系统的正常运行。     

浅谈LF钢包精炼炉机械设备安装

LF炉(钢包精炼炉),具有设备简单,投资费用低,操作灵活和精炼效果好等特点,所处理的钢种范围广泛,在我国各大钢厂均有应用,本文以大连特钢110吨LF炉为例,阐述了其机械设备安装的技术要点。     

石墨质探测器在VD钢包精炼炉中的成功应用

石墨质探测器是在VD钢包精炼炉真空处理钢液过程中,用来监测钢渣在真空状态下翻腾程度及上升高度的一种检测工具,太原重工铸锻分公司炼钢厂经过一系列研究、试验后,确定了该探测器的材质及简捷的安装使用方法,使用后发现,该石墨质探测器完全能满足生产需求,具有使用寿命高等优点.     

浅谈机械设备安装及其注意的问题

机械设备安装是机械设备投产前的一项重要工作，是介于工程与生产产品之间的一种不可缺少的步骤，它是一门跨度较大的应用技术。在机械设备安装实践中，安装工艺流程的设定及安装质量的合理控制尤为重要。笔者根据自己多年的工作经验浅谈了机械设备安装技术及在机械设备安装时应注意的一些问题。     

浅谈GIS现场安装流程及注意事项

GIS在电器制造厂装配完成后,发往电站安装现场进行现场安装。现场安装环境对产品的安装质量有直接影响,所以现场安装人员需根据现场环境开展装配工作,本文主要介绍了GIS现场安装环境要求,现场安装流程及装配注意事项。     

电梯无脚手架安装工艺探讨

随着我国高层建筑的发展,电梯安装质量的重要性越来越受到人们的关注,由此也对电梯安装工艺提出了更高的要求。当前,安装电梯的方式有两种,一种是传统的有脚手架电梯安装,一种是无脚手架电梯安装。与传统的电梯安装方式相比,无脚手架电梯安装具有极为明显的优势,但是这安装过程中安全问题比较多,因此,在安装过程中要格外的注意。该文对两种电梯安装方式进行了对比,并简单的介绍了无脚手架电梯安装流程,最后对容易出现的问题制定了解决措施。     

软件安装描述语言SLDL及安装软件SETUP

从软件安装的工作原理出发，为说明安装信息，定义了安装描述语言ＳＩＤＬ，并描述了通用安装软件ＳＥＴＵＰ在ＭＳ－Ｗｉｎｄｏｗｓ环境下的实现，基于ＳＩＤＬ描述的软件的安装文本，ＳＥＴＵＰ能自动完成相应软件的安装。     

浅谈钢结构构件安装的安全措施

本文结合某工程实例,分析了钢结构构件安装;从钢柱吊装、柱间支撑安装、钢梁安装、钢梁水平支撑安装四方面去论述,提出了相应的安全措施。     

西江引水工程配水泵站水泵安装流程简析

以西江引水工程配水泵站内泵组的安装为例，简述了水泵组的安装流程，分析了水泵组安装中的准备工作以及安装精度调整等环节，罗列了安装过程中的注意事项，并就在安装过程中出现的问题给出了相关解决办法。     

浅谈电力安装之变压器安装与存在缺陷的处理

本文包括安装前的准备工作、安装程序和安装过程中的试验项目等几方面去分析了电力变压器的安装，根据现场经验，对安装过程中可能出现的问题进行了分析，并提出了解决方案，总结出了安装过程中变压器缺陷的处理方法。     

电炉电抗器及抽头更换装置的安装要点

阐述了电抗器及抽头更换装置的安装环境、安装细节以及安装过程的注意事项。     

感应炉安装技术浅析

感应炉安装包括辊道输送系统、翻钢机、开关/线圈柜、液压站,其主要功能是为扩孔机及挤压机提供合格的管坯料。感应炉安装质量是实现感应炉各项功能的基础,高质量的安装有赖于科学的施工组织和合理的安装工艺。从设备的卸车吊装、安装工作的前提条件、安装程序等方面总结了感应炉安装过程中的注意事项。     

步进梁式加热炉水梁的安装

主要从立柱安装、水梁安装、射线探伤与试压3个方面介绍了步进梁式加热炉的水梁安装技术。     

退火炉仪表安装调试的探讨

以太钢第二炼钢厂南区退火炉为例,详细介绍了退火炉主要测量控制仪表的安装和调试,并对操作过程中出现的问题进行了分析和总结。     

120t LF精炼炉设备系统优化

简述炉外精炼的发展及LF炉的设备组成;针对LF炉喂丝机喂丝系统和钢包车驱动系统存在的问题进行了分析和优化改造,改造后取得很好的效果。     

浅谈步进式加热炉炉底机械设备安装技术

介绍了步进式加热炉炉底机械设备斜轨底座安装的方法,探讨了提升框架、侧部导向辊和上下托轮的安装技术。     

Experimental study on sulfur removal from ladle furnace refining slag in hot state by blowing air

In view of the present problem of sulfur enrichment in the metallurgical recycling process of ladle furnace (LF) refining slag, a simple and efficient method of removing sulfur from this slag was proposed. The proposed method is compatible with current steelmaking processes. Sulfur removal from LF refining slag for SPHC steel (manufactured at a certain steel plant in China) by blowing air in the hot state was studied by using hot-state experiments in a laboratory. The FactSage software, a carbon/sulfur analyzer, and scanning electron microscopy in conjunction with energy-dispersive X-ray spectroscopy were used to test and analyze the sulfur removal effect and to investigate factors influencing sulfur removal rate. The results show that sulfur ions in LF refining slag can be oxidized into SO₂ by O₂ at high temperature by blowing air into molten slag; SO₂ production was observed to reach a maximum with a small amount of blown O₂ when the temperature exceeded 1350℃. At 1370℃ and 1400℃, experimental LF refining slag is in the liquid state and exhibits good fluidity; under these conditions, the sulfur removal effect by blowing air is greater than 90wt% after 60 min. High temperature and large air flow rate are beneficial for removing sulfur from LF refining slag; compared with air flow rate, temperature has a greater strongly influences on the sulfur removal.     

水泵变频节电改造技术在莱钢炼钢厂的研究与应用

型钢炼钢厂转炉、连铸机、LF精炼炉、RH精炼炉生产时需要大量冷却水进行冷却,冷却水通过水泵房进行供水与回收,所以各水泵房有大量水泵长期连续运转,以保证设备的连续冷却,众多大功率水泵连续运转消耗大量电能,并且由于水泵控制转速不可调节,所以只能通过调节机械阀门进行水量调节,反应慢并对现场造成影响,机械阀门过快磨损,并经常出现憋泵导致泵体损坏,通过对水泵进行变频改造,达到了随时调节水量、防止机械损坏,节省大量电能资源与电费消耗。     

LF炉冶炼超低硫钢的工艺条件

提出了采用热力学计算分析确定LF炉冶炼超低硫钢工艺条件的方法·分析表明,可通过提高炉渣碱度、强化渣钢脱氧、控制渣钢原始硫质量分数和渣质量,来实现超低硫钢的冶炼·150tLF炉生产实践表明,在原始钢水硫平均为00146%条件下,通过控制规定的工艺条件,经LF处理后的钢水硫质量分数平均可达00044%·再经VD处理后,可实现成品硫质量分数为00027%的超低硫钢生产·在上述条件基础上,将原始硫质量分数控制在00058%以下或保证渣金硫的分配比在250以上或采用双渣操作,LF炉可精炼0002%以下极低硫钢     

EAF steelmaking process with increasing hot metal charging ratio and improving slagging regime

A new electric arc furnace (EAF) steelmaking process with increasing hot metal charging ratio and improving slagging regime simultaneously was developed and applied in a 50 t electric arc furnace for more than a year at No. 1 Steelmaking Plant of Shanxi Taigang Stainless Corporation Limited. The essential fact of the new EAF steelmaking process was to charge hot metal in two portions or steps: firstly, 35wt%-40wt% hot metal was pretreated by blowing oxygen in a specially designed reactor for decar burization and improving hot metal temperature and melting premelted slag; secondly, 30wt% hot metal was charged into EAF with high basicity refining slags from ladle furnace (LF)-vacuum degassing furnace (VD) refining process. The results show that the hot metal charging ratio can reach to about 65wt%-70wt% for the new EAF steelrnaking process; meanwhile, the tap-to-tap time of a 50 t EAF can shorten by 5-10 min, the electricity consumption can decrease by 35-50 kW·h/t, the lime consumption can reduce by 10.5 kg/t of molten steel, and the content of harmful heavy metals in molten steel can be easily controlled to less than the upper limits of aimed steel specification or grade compared with the traditional EAF steelmaking process. In addition, the dephosphorization ability shows a slight strengthening, however, a small degree of lessening for desulphurization ability is observed for the new EAF steelmaking process, but the weakness of desulphurization ability cannot become an obstacle to its further application since a stronger desulphurization ability can be achieved during secondary refining of LF coupled with VD after EAF steelmaking process.