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1.
通过大量的调查研究,查清了电磁站内渗漏水的缺陷,提出了解决方案和具体操作方法,改变了原定的搬迁方案,不仅彻底地消除了缺陷,还节约了大修费,缩短了工期,为生产创了可观的效益。  相似文献   

2.
热电厂煤气加压站经过系统优化改造后,设备运行可靠,操作方便,满足了生产工艺要求,实现了变频调速,消除了煤气的泄漏现象,达到了节电,节油,节约维修费用的目的,经济效益可观。  相似文献   

3.
本文叙述了国内先进的煤气净化工艺和氨、硫回收装置,净化了焦炉煤气,减少了环境污染,改善了硫铵质量,增加了硫磺新产品,提高了生产管理水平,确保了安全生产。  相似文献   

4.
承钢“八五”期间坚持“科技是第一生产力”的思想,紧紧依靠技术进步,狠抓节能降耗,增产增收,投资7亿余元用于科技进步的项目,实现了高炉喷吹煤粉,连铸,连轧,热电联产等工艺技术并已取得了显著的经济效益,经济技术指标水平明显提高,有力地促进了企业的发展,提高了市场竞争的能力,保证了经济效益的提高,为“九五”的进一步发展奠定了基础。  相似文献   

5.
大型顶吹平炉投产以来,由于降碳速度快,因而造渣困难,脱硫能力差,长期不能冶炼硅钢。针对上述问题,对造渣工艺进行改革,获得成功,不仅降低了消耗,提高了质量,缩短了熔炼时间,而且也满足了用户对硅钢的要求,同时,取得了较大的经济效益。  相似文献   

6.
攀钢半钢炼钢技术进步及效果   总被引:1,自引:0,他引:1  
介绍了攀钢在半钢炼钢工艺的技术进步及其效果,通过采用铁水预处理,使用活性石灰造渣,改进造渣工艺和终点控制制度,实施溅渣护炉等措施,有效地控制了终点钢、渣氧化性,缩短了冶炼周期,提高了生产率,提高了炉龄,提高了钢质量。  相似文献   

7.
本文介绍10t“0”型龙门吊通过静定车架结构代替传统的超静定结构的改进,其造型美观,受力合理,降低了精度要求,节省了大量的材料,降低了成本,使制造工艺更加方便,大大降低了金属结构的自重,改善了起重机的运行状态,延长了驱动车轮的寿命,故障率低,维修费用少。  相似文献   

8.
这次会议,传达了全国高教管理体制改革工作座谈会精神,听取了徐部长的重要讲话,交流了冶金高校近几年来管理体制改革的情况和体会,研究了改革过程中存在的有关困难和问题,讨论了进一步推动冶金高教管理体制改革的相应措施。这是一次很重要的会议,通过会议,大家进行了热烈地讨论,进一步提高了认识,明确了方向,这对进一步推进冶金高教管理体制深化改革必将起到重要作用。下面,我就有关问题讲几点意见。  相似文献   

9.
马钢第一炼铁厂应用DZ─80测振仪对喷煤车间的2台风机进行状态监测,根据运行状态趋势图确定检修时间,实行预知维修,延长了检修周期,节约了维修费用。并通过数据分析,找出了设备存在的问题,进行了改进,改善了风机技术性能,提高了风机运行的可靠性。  相似文献   

10.
周世龙 《冶金管理》2005,(11):41-43
随着企业的发展,实现企业信息化管理,提升管理水平,进一步挖掘企业的潜在能力,已成为企业的主要工作目标,杭钢2002年11月启动ERP信息工程,2004年2月顺利上线,运行ERP至现在,设备管理系统已经初步建成了全公司设备管理信息平台,基本实现了设备管理的物流、资金流、信息流三流合一,实现了整个集团公司设备系统的信息共享,实现了业务信息传递无纸化,提高了工作效率。  相似文献   

11.
鲁迅先生一生热爱美术作品,对版画中木刻兴趣尤甚.<野草>作为其"写心之作",亦呈现出一些与木刻版画一致的审美特征:一是具有木刻版画的色彩特征,多对比、多冷色,有阴郁的美感;二是具有木刻版画的力度特征,环境描写、人物刻画处处刀锋毕现,遒劲有力,有一种"力之美".  相似文献   

12.
南钢45号钢的主要问题是铸坯和轧材裂纹率高,轧材易在热墩或热墩后的机加工过程中出现不同程度的开裂。究其原因是由于钢中大量的氧化物和硫化物夹杂使得其塑性、韧性及疲劳强度降低、加工性能变坏所致。因此,通过控制转炉终点碳质量分数和出钢过程温度、增加软吹氩时间、在LF炉中提前造白渣以及加强保护浇注等措施,降低了45号钢钢中夹杂物的数量,有效的避免了加工开裂。  相似文献   

13.
Through summary and extraction of current steelmaking design,process and equipment technologies and production technologies for 300 t grade converters in Baosteel,the article analyzes and elaborates the significance of independent integration of 300 t grade converters in Zhanjiang,major targets of the independent integration in converter process technologies,equipment packages and controls,the innovated critical technologies and comparison with overseas advanced technologies,major technical difficulties in the integration in Baosteel and their solutions,as well as general mindset and final objectives of the project.The total integration of technology for Shanghai No.1 Steel Making Plant of Baosteel was undertaken by Nippon Steel.And Kawasaki Steel was responsible for the total integration of technology for 4# and 5# converters of Shanghai No.2 Steelmaking Plant of Baosteel.Based on digestion,absorption and innovation of the introduced technologies,Baosteel has firstly achieved the independent integration of 6# converter,5# RH and 3# LF projects in the Shanghai No.2 Steelmaking Plant of Baosteel.Therefore, Baosteel shall take advantages of the favorable conditions and experiences and advanced steel making technologies of Baosteeel to master the imported new steelmaking technologies in the world and then form the advanced complete set steel making technologies and equipment at home and abroad.The achievement of independent integration of Zhanjiang Steel Making Project will make the breakthrough for the construction of large - sized steel making plant in Baosteel.300 t converter technology integration is undertaken by Baosteel independently in instead of by the foreign side in the past.  相似文献   

14.
Retrospective accounts of child rearing obtained from parents of 3-year-olds were compared with reports they previously gave in the course of a longitudinal study begun with the birth of the child. The parents were quite inaccurate in their memory of details about child rearing practices and early development progress, in spite of the frequent rehearsal of these data due to their participation in the longitudinal study, and in spite of the relatively young age of the children. In-accuracies were greatest for items dealing with the age of weaning and toilet training, the occurrence of thumbsucking, and demand feeding. Inaccuracies tended to be in the direction of the recommendations of experts in child rearing, especially on the part of the mothers. In general, mothers recalled more correctly than fathers. (20 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

15.
16.
Track roughness describes in part the up and down waves in the longitudinal geometry of a railway track. A train passing over rough track experiences a degree of bouncing that generates oscillations in the forces exerted by the train’s wheels on the top of the rail, which in turn cause this roughness to worsen. The rate at which the track roughness deteriorates depends on the response of the track to the weight of the train and to the dynamic oscillations in wheel/rail forces, which in turn are affected by the properties of the train vehicles’ components and the speed of the train. The paper develops relationships between the severity of track roughness and the dynamic wheel/rail forces generated by a moving train using field data, and between those forces and the specific vehicle characteristics of speed, total mass, unsprung mass, suspension stiffness, and damping, using NUCARS simulations. These two relationships in turn are combined to show how the speed of the train and the design of the train vehicle’s bogie suspension can worsen or improve the rate of deterioration of track roughness. The relationships also provide a firm basis for the owner of track to set more representative charges levied on the train operator for using the track.  相似文献   

17.
In 1997 and 1999, inspection works were carried out in the 384 cable stays of the six central piers of General Rafael Urdaneta Bridge, located in Maracaibo, Venezuela. Inspection indicated the presence of water and significant settlings in the sockets of the cables and corrosion along each cable and socket. The tension of the cables was also measured, and differences of up to 30% in the tension of the cables of some of the 24 groups corresponding to the six central piers (four groups of 16 for each pier) were found. The results suggested the need to retension the cables. This paper shows the outcome of the inspection and indicates the procedure and results of the process of retension, finished in July 2000.  相似文献   

18.
加拿大铝业公司是全球第二大铝工业跨国公司,在铝行业和特种包装业方面处于世界领先地位。现有雇员52000多人,在38个国家和地区设有工厂企业。本文详细地介绍了加铝各业务板块的产能和产量(特别是铝土矿、氧化铝和原铝),以及近几年的生产经营结果。  相似文献   

19.
通过对焦炭在高炉内的历程及其变化规律的剖析,阐述焦炭热性能指标的意义,形象地把焦炭在高炉内的损耗分为三部分(M1,M2,M3)。指出M2对焦比及焦炭价格有一定的指导作用。  相似文献   

20.
镓生产现状及其化合物的应用前景   总被引:1,自引:0,他引:1  
本文分析了世界镓的供求状况、生产现状及镓化合物的应用前景,并对我国镓生产的 技术方法、产品结构调整提出了看法。认为目前镓的需求旺盛,但我国镓生产技术应根据氧 化铝生产工艺、循环母液镓含量,选用对氧化铝生产无影响的先进技术,镓产品向精炼镓、 镓化合物及GaAs、GaP晶体基片甚至其外延加工方向发展。  相似文献   

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