冷轧机自动化(四)

四、冷轧机操作自动控制冷轧机的操作,是指冷轧机在整个轧制过程(由上带卷的全部过程)所必须的有次序的一系列设备动作。这些动作如果只由人工操作控制,则为手动操作;这些动作如果由自动控制系统和装备操作,则为冷轧机操作自动控制,也叫冷轧机操作自动化。冷轧机操作自动化包括下述内容:自动开卷、自动穿带、焊缝自动减速、带钢抛尾自动减速和停车、自动卸卷和自动换辊等。     

鞍钢10号高炉高煤比操作实践

为实现高炉高效、低成本生产,鞍钢10号高炉以高煤比操作为核心,从稳定炉况、合理操作等多方面进行探索,取得了显著效果.     

济钢3200m~3高炉炉况失常与处理

济钢3200m3高炉由于原燃料条件恶化以及操作制度调剂不及时,造成了炉况失常,表现为压量关系紧张、炉缸工作状态不断恶化、中心气流不畅,通过改善原燃料质量、采用上下部调剂相结合的操作制度,炉况恢复正常,重新确立了精料、合适的操作制度对于高炉操作的重要性。     

基于炉体热负荷分布的高炉操作炉型诊断技术

通过研究鞍钢2号和5号高炉炉体热负荷分布规律,提出了以低燃料比最佳操作炉型的热负荷分布为基准来计算当前操作炉型的热负荷分布偏差值Sr,实现了操作炉型的量化评估。鞍钢高炉应用实践表明:(1)炉体热负荷分布合理是操作炉型合理的关键,通过与低燃料比操作炉型的热负荷分布对比,能有效诊断当前操作炉型;(2)由炉腹至炉身热负荷,可以从各段热负荷的总值和分布两个维度进行评估;(3)鞍钢高炉理想的炉体热负荷分布分别为炉腹26%、炉腰12%、炉身下部0～6m为53%、炉身中部为9%。     

湘钢阳春2号高炉大修停炉操作实践

对阳春新钢铁2号高炉空料线停炉操作实践进行了总结。通过制定详细的操作计划,进行细致的前期准备工作,合理控制降料线过程中的各项操作参数,保持炉况稳定,使炉顶温度、煤气发生量、煤气压力控制在安全范围内,实现安全、顺利、快速停炉,为以后高炉空料线的停炉操作积累了宝贵经验。     

棒材连轧计算机操作指导系统的开发

棒材连轧计算机操作指导仿真系统的开发 ,为现场工程技术人员及操作人员提供了一个离线的模拟生产的操作平台 ,为实际操作提供指导 ,具有实际应用价值。主要介绍该系统软件的设计思想、技术特点、主要功能及实际应用情况。     

PLC控制系统在热钢板喷号机中的应用

莱钢宽厚板生产线热钢板喷号机控制系统采用全自动、半自动和手动3种操作模式,通过Profibus-DP通讯,使DOTCON调用字体库字体并控制喷头电磁阀完成一次字体喷印。该控制系统设计合理,性能稳定,操作简单,减轻了操作人员的操作强度,为钢板信息的跟踪及查询提供了可靠保证。     

大型高炉炉型管理综合模型的开发研究

为了能在日常操作中及时掌控炉型变化规律、稳定炉况,以首钢集团某高炉为依托,开发了高炉炉型管理综合模型。该模型以二维、三维方式采用可视化技术对表征炉型演变的热流强度进行动态显示与跟踪,以便在日常高炉操作中及时观察炉型在周向和纵向的变化情况,并借助聚类分析法从宏观上寻求最佳操作炉型以及与其对应的各段冷却壁温度范围,为高炉稳定操作提供依据。     

韶钢1050 m~3高炉高产低耗生产实践

韶钢6号高炉1 050 m~3大修投产后,采用标准化管理和操作理念,在精心备料、全程跟踪、精心操作上下工夫.通过制定合理的操作制度,以高炉为中心,设备点检为保障,高炉长期顺行高产低耗,实现了1 050 m~3级高炉优秀生产指标.     

铜电解高速机器人剥片机组生产运维实践

通过对铜电解高速机器人剥片机组运行故障与设备技术要点的分析,策划并实施标准化操作为落脚点,强化工艺操作为前提,夯实日常保全为基础、坚持专业保全为核心、重视设备维修为补充的电解机组运维体系,有效提升了机组设备性能及综合运行效率。     

1969 C.P.A. Institute.

Presents the program for the C.P.A. Institute entitled "The Role of Counseling Services on the Contemporary Campus." The Institute was held on June 2-3, 1969. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Laudatio: Prof. Dr. med. Dr. phil. Dres. h. c. Heinz H?fner

During the course of a year, there are many healthcare workers nationwide who sustain sharps injuries whilst carrying out their duties. Staff who work in the Accident and Emergency (A & E) units are no different from anyone else in this respect. The emotional cost of such an accident cannot be calculated, whereas the financial costs can. This article aims to show how the cost of an injury to a member of staff can be calculated, thus allowing a manager to assess the financial implications of sharps injuries to their department. In the absence of access to an Occupational Health (OH) department, most A & E units have to respond to sharps injuries to healthcare workers in the hospital. This task must be attended to by the medical staff as well as the nursing staff of the A & E unit. Within the following text the appropriate responses and methods to ensure uniformity of response are discussed. The tables and the calculation figures shown are taken directly from the information held in the St James's University Hospital Trust's OH department. All calculations are based on the middle band of the salary scale for each discipline. Accurate costings for each member of staff injured cannot be shown in this article, but the general principle is laid down and can be easily followed for any situation.     

Rats, Man . . .

Comments on the article by Richter entitled "Rats, Man, and the Welfare State" (see record 1960-02810-001). The commenter notes that in his article Richter did not indicate how hereditary and environmental factors were controlled. In comparing the hereditary survival characteristics of wild versus domesticated rats, it would be essential that the environmental influences on the survival characteristics of the wild rats should be ruled out. Another factor to be considered is that the wild state may offer a diet and other environmental influences, which in the life of a single individual would produce organic changes, accounting for some of the differences between wild and domestic rats. It would seem that the most effective way to determine the hereditary differences between wild and domestic rats would be to create a wild group, composed solely of the offspring of wild rats. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The blood-brain barrier. I. Histology. Physiology. Embryology. Transport

The concept of blood-brain barrier (bbb) arose in the beginning of the 20th century after report that the dyes injected intravenously did not appear in the brain. The idea and definition of bbb has been changed many times since then. We present current opinion concerning bbb, its histology, embryology, ultrastructure and function on the ground of a review of the recent literature.