衡阳钢管厂Φ89mm半浮芯棒连轧管机组工艺及设备结构特点

衡阳钢管厂Φ８９ｍｍ半浮芯棒连轧管机组是一种新型机组。它不仅与上海宝钢Φ１４０ｍｍ全浮芯棒连轧管机和天津Φ２５０ｍｍ限动芯棒连轧管机不同，而且与世界现有３套半浮芯宫轧机相比也有其独到之处。它所选配的变形工艺路线可算是目前世界上生产小规格的热轧无缝钢管相当完美的工艺路线。本文着重论述该机组的工艺及设备结构的特点。     

三辊连轧管机液压辊缝控制系统

介绍了韩国日进Ф180 mm三辊连轧管机组采用的连轧管机辊缝控制系统的设备结构、电气控制系统以及头尾削尖功能的实现。     

连轧管机组与Accu-Roll轧管机组的比较

介绍了连轧管机组和Accu-Roll轧管机组的发展概况和优缺点，结果得出，连轧管机组大多数指标优于Accu-Roll轧管机组。     

连轧管机组与Accu—Roll轧管机组的比较

介绍了连轧管机组和Accu-Roll轧管机组的发展概况和优缺点，并对连轧管机组和Accu-Roll轧管机组的经济指标进行了分析比较，经过比较认为连轧管机组大多数指标优于Accu-Roll轧管机组。     

先进技术和设备在Φ159FQM三辊连轧机组中的运用

攀钢集团成都钢铁有限责任公司建设的Φ159FQM连轧管机组工程采用了当今世界上最先进的热轧无缝钢管生产工艺,对现有穿孔机进行改造,引进技术先进的FQM三辊限动芯棒连轧管机(5机架连轧管机加VRS)、24架可调整张力减径机,并采用完整的检测装置和高水平的钢管精整线,运用高水平的自动化控制系统,生产外径48.3~177.8mm、壁厚3.5~25mm、长度4~14.63m的各类无缝钢管,年产量达35万吨。     

少机架三辊连轧管机组“以热代冷”的深入探讨

以Ф76 mm小直径少机架三辊连轧管机的实践应用为背景,从生产成本、成材率、投资与运营维护、自动化水平、节能环保等多方面,对该少机架三辊连轧管机组和穿孔+冷轧(拔)机组进行了对比。认为在生产小直径无缝钢管方面,对于绝大多数对尺寸精度和表面质量要求不苛刻的小直径中低压锅炉管、结构管、普通流体输送管等品种,采用少机架三辊连轧管机组作为穿孔+冷轧(拔)的升级换代机组,进行"以热代冷",具有明显的优越性,有推广价值。     

Φ76连轧管机组设备改造

连轧管机组生产无缝钢管,能实现高度的机械化和自动化生产,具有质量好、生产率高、技术经济指标好等优点。在国外采用连轧管机组生产无缝钢管较普遍,在我国目前仍只有上海宝钢从西德引进一套φ140连轧管机组正式投人生产。     

φ273mmPQF连轧管机组的工艺和设备

介绍了新建273mmPQF连轧管机组的工艺流程和平面布置，主要设备组成、特点。     

衡阳钢管厂Φ89mm半浮芯棒连轧管机组工艺及设备结构特点

衡阳钢管厂Φ８９ｍｍ半浮芯棒连轧管机组是一种新型机组，其选配的变形工艺路线能很好地适应生产小规格的热轧无缝钢管。本文论述了该机组的工艺及设备结构特点。     

鞍钢无缝钢管厂AG机组改造工艺概述

鞍钢无缝厂AG机组通过技术改造，主机引进当今国际最先进的Mini-MPM连轧管机等进口设备，并对原有设备利旧改造，建成了一条现代化连轧管机组，使企业焕发了活力。     

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。     

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。     

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.     

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。     

Comparison of the results of surgical and conservative treatment of fractures of the diaphysis of the tibia

In this paper is treated the fundamental problematic of the fracture of the diaphysis of the tibia and the therapeutic results after the conservative and operative treatment are confronted. Among 518 patients with 433 open fractures and 35 with closed fractures of the diaphysis of the tibia, successful treatment of more 2/3 was obtained in the period from 1968 to 1972. Following our casuistics and literature, whose results are similar, we find out that the average total treatment of the osteosynthesis of the fracture of the diaphysis was shortened for 2,5 months depending upon the type and the localisation of the fracture. Apolied methods of the operative and conservative and conservative treatment in relation to the velocity of the medical cure as well as to the extreme anatomical-functional results are analised. We noticed that osteosynthesis, made by the intermedullary nail and the extension of the canals or by a small AO table, by the achieved stability makes conditions of immediate motions and an early rehabilitation. Because of that it gives the best functional results.