方坯精整线生产能力浅析

介绍了方坯精整线的生产工艺流程及主要设备,并对精整线生产能力进行了计算.     

中型型钢轧机精整工序能力开发

介绍了中型型钢厂精整线工艺、设备及控制系统的改造情况。通过改造,使精整线工序能力有了大的提高,加快了6m材过钢节奏,从而大幅度提高了生产效率。     

钢管精整线自动化控制系统

宝钢钢管精整线经过几十年的运行,设备老化、可靠性下降,并且不具备生产高附加值产品的能力。对该精整线的各单体设备、辅助输送设备及电气自动化进行了全面的升级更新,使该产线重新适应了市场的需求。     

图像识别在中板精整二级跟踪中的应用

介绍了图像识别技术在中板精整跟踪中的应用,降低了人工匹配钢板信息的错误概率,同时解决了板材在精整线跟踪问题。二级跟踪系统根据中板厂精整生产工艺流程,对物料信息进行跟踪,并支持自动划线自动标印投用。通过在精整2#线加装5台工业摄像机,将喷印后的钢板信息识别出来,变为文本信息写进数据库,并与三级信息进行匹配,自动得出钢板需要加工的外形尺寸,无需人工干预。     

中板圆盘剪成功投产

中板第二精整线的主体设备圆盘剪成功投产，标志着总投资1．45亿元的柳钢重点技改项目——中板粗轧机和第二生产精整线技改工程全面完成，柳钢已形成年产110万吨中厚板的生产能力。     

宝钢不精整管坯的质量保证

西德曼内斯曼公司提供给宝钢的正式资料中规定,宝钢初轧厂年产管坯60万吨,其中不精整管坯约37万吨,这无论从数量及钢种范围来说都是较多的。不少人对不精整管坯的质量表示担心,因此有必要对不精整管坯的实际生产情况进行调查研究,以便确保宝钢产品质量。为此,我们在赴西德曼内斯曼胡金根初轧厂实习培训期间将不精整管坯生产列为重点调查项目之一。调查是从初轧厂的精整线开始,一直到使用单位钢管厂。     

现代化高品质方坯精整线

我国钢铁工业发展到现在，提高产品质量已是整个行业的重要任务，对生产优质产品的坯料精整越来越引起各生产厂家的重视，通过对宝钢初轧厂小方坯精整线工艺设计和主要设备特征的介绍，对行业内较为不熟悉的现代化精整工艺有所了解。     

新型多功能钛材精整生产线

介绍了西部钛业板带厂设计的新型多功能钛材精整线,该生产线集剪切、校平、焊接、修边于一身。其设备既能单动,又能整机联动;既能生产板材,又能生产卷材。相比于传统精整设备,具有自动化程度高、劳动强度低;生产效率高,生产成本低;设备投资成本小,厂房占地面积小等优点。其关键设备圆盘剪、SAF等离子焊机在国内是首次应用于精整线,为拼焊成卷的顺利进行、产品的质量稳定提供了保证。     

带鼓风冷却装置的冷床

在一个精整线连续布置的型钢轧机上,后部精整工序几乎占去总投资的一半。轧机布置本身已经完善到没有好多可节约投资的程度,然而在精整线上却有充分地节约潜力。特别是精整作业线上的冷床是最大的投资项     

漏磁探伤技术在特钢厂的生产实践

特钢厂精整车间原有的钢材表面检查方式主要采用修磨台架人工肉眼检查,这种原始的检查方式不仅劳动强度高、检查效率低,且经常出现错检漏检现象,不能满足现代化特殊钢厂对钢材表面质量的检查要求。针对这种情况,2009年通过技术改造新上一条特殊钢棒材精整线,漏磁探伤机是精整线的一部分,通过漏磁探伤可快速准确的检查钢材表面和近表面缺陷,从而为特殊钢生产提供了良好的质量保证。     

转炉炉壳热应力分析

根据实际转炉建立实体模型。以有限元为手段,考虑了炉衬和炉壳材料的物性参数随温度变化的特点和炉衬与炉壳之间膨胀间隙,计算了转炉炉壳在温度载荷和炉衬膨胀压力同时作用下的热应力。所得结果可为转炉炉壳设计提供依据。     

焦炭热性能指标意义浅析

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。     

Results of treatment of cancer of the cardia

Cancer of the cardia is traditionally discussed with cardiac cancer of the lower portion of the esophagus and upper gastric cancer invading the esophagus, and the specific characteristics of cancer of the cardia have never been clearly defined. We reviewed the outcome of 172 patients with adenocarcinoma of the cardia who had undergone radical surgery between 1949 and 1994 in the Division of Gastrointestinal Surgery of the Cancer Institute Hospital. The centers of the tumors were located within 2 cm above and below the boundary between the esophagus and the stomach, and their longitudinal diameter was less than 8 cm. We divided the patients into an early period (1949-1979; n = 79) and a late period (1980-1994; n = 93), and focused on the historical transition. There were no differences in patient gender or histology between the two periods. However, the late period was associated with fewer cases of esophageal invasion and shorter longitudinal diameter, as the age of the population advanced. The number of advanced cancers such as the localized and infiltrative type had decreased, and early cancer and early clinical stage had become more common, but despite the fact that the number of early cancers had increased, extended dissection, such as thoracic and paraaortic lymph node dissection, was performed more frequently. By clinical stage, the long-term outcome markedly improved in Stage I patient in the late period, and tended to improve in Stage II and III patients. This appears to have been attributable to the prevention of micrometastasis by extended dissection, although the number of early cancers is another major potential cause. There were no differences in the outcome of Stage IV patients between the two periods, and further advances in multimodality therapy must be awaited. The range of resection is basically proximal gastrectomy, and if there are adequate indications, the prognosis is favorable. In view of the status of lymphatic flow and lymph node metastasis, and long-term results, lateroaortic lymph node dissection is important. Since the number of early cancer patients has been increasing, if intraabdominal recurrence is prevented, intrathoracic lymph node dissection will contribute greatly to the outcome of such patients.     

The effect of amount of possession of the trait of hostility on accuracy of perception of hostility in others.

Some theories of personality hold that an individual's perception of others is influenced by his own personality characteristics; more specifically, that a trait of low social value will be projected more into others, and that insight into the possession of these characteristics reduces this distortion. These 2 hypotheses were tested by having a group of college students rate each other (including themselves) on degree of friendliness or hostility. Agreement with group rating about self yielded the insight score. In general, the hypotheses were supported; the "friendly" Ss were most accurate in their perception of others, and insight was positively associated with accurate perception. From Psyc Abstracts 36:04:4HL16M. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Comparison of rates of infection of two methods of emergency ventricular drainage

The rates of infection of two methods of external ventricular drainage in use at Atkinson Morley's Hospital--namely, (a) percutaneous drainage with Rickham reservoirs and (b) tunnelled ventriculostomies--were compared in this retrospective review. Percutaneous drainage of CSF with Rickham reservoirs was associated with a 27% rate of infection as identified by positive microbiological cultures; tunnelled ventriculostomy catheters had a 10% infection rate. The difference in the infection rate between the two methods was statistically significant (P < 0.015). Other variables examined, including the age and sex of the patients and the reasons for ventricular drainage, were not associated with an increased rate of infection. Most infections from either method were caused by a coagulase negative staphylococcus. The average duration of ventricular drainage before identification of positive cultures was 5.7 days for Rickham reservoirs and 6.0 days for ventriculostomies.     

浅析《野草》的版画特征

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".     

四辊破碎机车刀架的改造

针对四辊破碎机车刀架车削中存在的几个问题,详细介绍了电动车刀架的结构和工作原理,建立主要设计参数的数学表达式,并进行适当的分析。改造后,这种电动车刀架运行平稳、可靠、方便、省力,取得了预期的效果。     

Effect of antibiotics of chemotaxis of human leukocytes

The effect of 20 different antibiotics on chemotaxis by human neutrophils was studied. Human leukocytes incubated with chloramphenicol, rifampin, sodium fusidate, and tetracyclines in vitro showed markedly depressed migration. The mechanisms by which these antibiotics affect leukotaxis are discussed.