中国电弧炉CSP流程高效化的发展

以珠江钢铁电弧炉CSP流程高效化的实践为基础,提出了电弧炉流程高效化最终要体现在流程的协同效应,包括时间效率、品种、流程组元间的有效衔接、协调和生产精确性等方面,实现形式是"要以理顺整个生产流程为主要手段,实现降低成本、提高生产效率等多目标优化",实现原则是"连铸机为拉力源,电弧炉为推力源",指出电弧炉流程高效化也是企业的价值源.同时介绍了珠江钢铁近年来在电弧炉CSP流程高效化方面的具体实践成果,展望了中国电弧炉CSP流程的发展方向.     

八钢70t电炉炼钢流程工艺优化实践

八钢70t电炉通过生产工艺优化和技术改进，进行了电炉炼钢流程高效化实践，开发了品种钢生产工艺技术，实现了普碳钢、优特钢生产集成一体短流程生产线。     

热轧卷取机张力控制系统

作为热轧工艺应用的重要设备,卷取机的规范化应用至关重要。确保其张力控制系统的高效化建设,不仅有助于热轧工艺的高效化应用,更对热轧钢材的质量提升具有重大影响。本文在阐述卷取机结构组成的基础上,对其张拉控制的流程进行分析;并针对性的指出热轧卷取机张力控制系统优化策略。以期有利于卷取机张力控制的规范化,继而在提升热轧工艺应用水平的基础上,促进现代制造工业的进一步发展。     

近两年我国薄板坯连铸连轧装备技术发展分析

近两年，我国已建成的薄板坯连铸连轧生产线的有关创新优化工作。围绕着全流程的生产工艺稳定、产品质量稳定、新产品开发、冷轧基板性能控制和充分发挥流程潜能、实现高效化生产等方面深入展开；同时．陆续建成投产的生产线也实现迅速达产、努力增效，我国薄板坯连铸连轧领域不断创造新的世界纪录。     

从流程学视角构筑焦化工序发展新格局开启焦化行业低碳新模式

在国家碳达峰及碳中和政策强力推进的新形势下,我国钢铁工业焦化工艺正面临着百年大变革的新挑战及高质量发展的历史新机遇。以《冶金流程工程学》三大功能理论为指导,剖析了焦化企业流程工序碳能源的应用现状,结合钢铁企业/流程工序绿色转型发展的实际需求,对焦化流程进行了解析优化、工序协同优化、流程重构优化的系统集成优化,推动了焦化流程工序能量流革命化重构、流程高效化再造及产业链优化重组。开发洁净高效能量流及网络运行模式、高效能质转化流程工艺技术、低碳固碳新产业技术,为绿色化、生态化、低碳化、智能化焦化流程的构建提供了可行性。     

一种短流程、高效化的中板生产新工艺--采用中等厚度连铸板坯+"Coilplate"工艺生产中板

文章介绍了国内外最新型的短流程、高效化中板生产的新工艺、新技术,即采用中等厚度连铸板坯 “Coilplate”工艺生产中板。结合国内外新建生产线的工艺及设备配置,对该工艺的主要技术特点、技术优势及生产方式进行了详尽的阐述。     

建立新一代钢厂精准设计评价指标体系的研究

新一代钢厂的设计水平对钢厂的实际运行水平具有决定性的影响.为了提高新一代钢厂的精准设计水平,按照系统性、层次性等原则建立了新一代钢厂精准设计评价指标体系.指标体系包含49个末端指标和16个中间指标,分为经济投资水平、工艺设备水平、流程运行高效化、生态化水平四大类指标.该指标体系能反映新一代钢铁制造流程装备、工艺先进、流...     

宣钢矩形坯连铸机高效化改造

传统连铸机实现高拉速、高质量、高作业率需要实施高效化改造。就宣钢二台矩形坯连铸机实施高效化改造存在的困难进行了论证,介绍了高效化改造应达到的目标,提出了实施高效化的基本思路和技术保证及高效化改造的具体内容,最后计算了与高效化改造有关的技术参数,并把改造前后的生产指标进行了对比分析和经济效益分析。实践证明,高效化改造能给钢厂带来巨大的经济效益,传统连铸机实施高效化改造是钢厂今后节能降耗,结构优化的主要途径之一。     

采用中等厚度连铸板坯＋“Coilplate”工艺生产中板——一种短流程、高效化的中板生产新工艺

介绍了国内外最新型的短流程、高效化中板生产新工艺、新技术，即采用中等厚度连铸板坯 “coilplate”工艺生产中板的工艺技术。结合国内外新建生产线的工艺及设备配置，对该工艺的主要技术特点、优势及生产方式进行了详尽的阐述。     

电弧炉炼钢技术进展

回顾了电弧炉炼钢发展的概况,讨论了中国电弧炉炼钢发展面临的主要问题和机遇,重点分析了电弧炉炼钢的工艺改进和高效化技术发展,并从高效率、高质量、低能耗、低排放、可持续发展的角度出发对电弧炉炼钢流程的工艺装备和技术发展给出了新总结,并提出了发展前瞻性建议。     

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.