板坯切割机新设计

奥地利Framag公司对其板坯切割机进行了重新设计，提高了切割速度，减少了非切割时间，缩短了切割周期，使之更适用于短板坯和高速连铸的生产。首台新型切割机已投入使用，性能良好。     

薄板坯连铸连轧工艺与硅钢生产

介绍了薄板坯连铸连轧工艺生产无取向硅钢和取向硅钢的工艺特征.通过试样分析和对比工艺条件,研究了这一新工艺与传统工艺生产硅钢的不同点.指出了薄板坯连铸连轧工艺生产硅钢具有的优越性.     

板坯火焰切割机用于方坯切割的改造及应用

介绍板坯火焰切割机设备改造的原理、工作流程及其在实际生产中的自动控制过程,对连铸板坯火焰切割机进行全新改造,并在方坯连铸事故切割上应用,使事故状态下铸坯切成率由手工切割的40%提高到99%.     

基于变频技术的火焰切割机电气控制系统设计与应用

火焰切割机是连铸系统的重要设备,其控制性能直接影响铸坯的割缝质量和定尺率.为了满足工艺要求,提高铸坯质量,将变频技术和控制技术有效集成,开发了新型火焰切割机控制系统.结合工程实例,介绍了火焰切割机工艺要求、控制系统的组成以及控制功能的实现,并给出了系统部分梯形图程序和变频器参数设置.实践表明,该系统运行稳定,定尺率高,具有较高的可靠性,而且节省电能,能够给企业带来更大的效益.     

高表面质量不锈钢板坯连铸工艺研究

针对不锈钢冶金特性和最终用途特点设计了板坯连铸工艺装备和工艺参数,在热调试和生产过程中不断调整连铸工艺,目的在于改善板坯表面质量.目前,以304钢种为代表的板坯修磨率达到了样板厂水平,板坯表面质量达到了设计要求,工艺设计被证明是合理的.     

汽车散热器用黄铜带水平连铸工艺研究

随着散热器冷却管带材生产技术的不断进步,新型高锌锡黄铜HSn65-0.03已实现规模化生产应用,其带坯主要采用水平连铸工艺生产,生产过程中极易产生气孔或偏析缺陷,水平连铸工艺是高锌锡黄铜HSn65-0.03质量稳定的关键.通过分析工业上HSn65-0.03水平连铸带坯的工艺特点,对比其与普通H65带坯的水平连铸工艺,提出了HSn65-0.03带坯的工艺控制关键点.并通过对铸坯成分、组织、脱锌层的研究,阐述了水平连铸工艺参数对带坯质量的影响规律,系统提出了水平连铸的工艺控制、常见质量缺陷及解决办法.     

近终形连铸技术的研究现状及发展前景

近终形连铸技术是指浇铸接近最终产品（板坯或者带坯）形状的连铸技术.作为一种新型的连铸技术,对钢铁生产工艺进步产生了巨大的影响.近终形连铸主要包括薄板坯连铸技术,薄带连铸技术和异型坯连铸技术等.同传统工艺相比,它主要具有工艺简单、生产周期短、低能量消耗、生产成本低、质量较高等优点.这些优点恰好弥补了传统工艺加工量较大、工序复杂、能耗大、生产周期长、成本较高、劳动强度大等不足.此外,利用薄带连铸技术的快速凝固效应可以获得一些难以生产的材料和新功能材料.本文介绍了近终形连铸技术的发展现状以及将来可能的发展趋势,讨论了几种典型的工艺及其优缺点,分析了存在的问题.     

合金钢连铸机自动吹渣装置的研究与应用

针对莱钢合金钢连铸火焰切割机在生产中经常出现铸坯下断面粘结切割渣,严重影响产品质量的问题,对火焰切割机加设自动吹渣装置,达到了预期效果,保障了生产的顺行。     

明弧堆焊工艺研究及在连铸辊上的应用

介绍了明弧堆焊的原理和特点，针对连铸辊使用工况和失效形式，合理设计和制定了明弧堆焊材料与工艺，对不同焊后热处理的试样进行了组织，机械性能和耐磨性等试验分析，结果表明，1^#试样的综合性能最好，更适合于连铸辊的实际工况要求。使用结果表明，明弧堆焊连铸辊使用寿命是埋弧堆焊连铸辊使用寿命的2倍以上。     

高效小方坯连铸机的设计构想

对几种目前在高效小方坯连铸机上使用的新技术进行了介绍和比较，并根据这些新技术在国内外的应用经验，在新型连铸机的设计过程中综合考虑工艺技术配置的合理性实用性，设计出一种新的高效小方连铸机型。     

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。     

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。     

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.