钢渣用于喷砂磨料的技术研究

本文在对钢渣进行物理性能研究的基础上,开展钢渣喷砂试验,研究其喷砂效果,并与其他常用磨料的效果进行对比。结果表明,铜炉渣喷吹效果最好,主要原因是铜炉渣颗粒具有锋利的尖角和较大的颗粒度;PS球、风淬渣、石榴石效果稍差,经风淬渣处理后的工件,其表面光洁度和粗糙度分别在Sa2.5和60μm以上,满足涂装要求。     

磨料浆液除锈系统的研究

本文利用后混合磨料射流的工作原理进行了磨料浆液除锈系统的试验。并分析了压力、靶距、横移速度、磨料供给量、水流量、磨料粒度和磨料种类对除锈效率的影响，为磨料浆液除锈各参数的选择提供了参考。试验表明，压力是影响除锈效率最重要的参数。     

技术市场

经过精细加工后的铜渣,是一种质地优良的钢铁表东面除锈磨料,它具有硬度高、效果好、无毒害、价格低等特点。经造船、桥梁等行业使用表明,这种磨料是船舶、桥梁、石油化工、水电等部门最佳的除锈材料。随着国内     

马钢转炉渣风碎处理及综合利用实践

介绍了马钢转炉钢渣风碎处理工艺的研发及实践情况。重点介绍了风碎渣的理化特性及其在返烧结循环利用、路面混凝土细集料、喷砂磨料、混凝土预制件、格栅等方面的应用情况，并对风碎渣利用作了展望。     

前混合磨料连续水射流钢材除鳞除锈系统分析

钢材在深度加工前有的需要对钢材表面除鳞、除锈及污垢清洗,这对钢材的质量有着重要的影响。介绍一种新型前混合磨料连续水射流除鳞除锈系统,对前混合磨料连续水射流的工作原理、组成、磨料水射流流动原理及前混合磨料连续水射流除鳞除锈系统进行了分析。     

冷态钢材的旋转磨料水射流除鳞除锈能耗研究

作业效率和比能耗是评价冷态钢材水射流除鳞除锈能力的重要因素.本文研制大直径旋转磨料水射流除鳞除锈基本作业单元,以解决传统的超高压纯水旋转射流的高能耗和传统的磨料水射流的低效率的缺点,并进行了三者除锈试验,试验表明旋转磨料水射流除鳞除锈技术的能耗优于传统的水射流除鳞除锈技术.     

湿法抛砂除锈理论分析与原理探究

首先分析了国内外带钢表面除锈技术的应用现状,比较了各类除锈方式的优缺点,在此基础上,提出了湿法抛砂除锈的工艺理论,并通过对湿法抛砂的工作原理、浆体磨料的生产方式以及湿法抛砂工艺对带钢表面性能影响的主要参数等几个方面的深入研究分析,得出湿法抛砂除锈是一项非常环保的机械除锈新技术。     

金属表面高压水射流除锈

本文分析了几种传统除锈方法以及近年来发展起来的高压水射流纯水射流除锈、磨料射流除锈方法，比较了各自的优缺点，并阐述了磨料射流除锈机理     

酒钢转炉钢渣基础性能研究

本文通过对三种转炉钢渣形貌、粒度、安定性、易磨性、压碎值、化学成分、岩相矿相等指标检测,研究钢渣的基本性能,以寻求钢渣综合利用的可能性,为钢渣的深层次的开发利用提供技术依据。研究表明:钢渣用于烧结、炼钢等返回料,是内循环利用的首选;钢渣尾渣用于生产钢渣水泥、砖、混凝土掺和料、筑路材料是钢渣资源化利用的发展方向。     

焙烧炉钢结构塔架防腐蚀

本文介绍喷砂除锈、喷涂铝等新工艺在露天的钢结构防腐工程中的应用。以及施工中的技术要求。     

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)     

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.     

Quality of life of relatives of mental patients

Usage of quality of life of psychiatric patients' relatives as the parameter of estimation of the quality of psychiatric care is considered. By means of standard questionnaire elaborated by the authors as well as by means of both individual and group conversations the quality of life was analyzed in 40 relatives which lived together with psychiatric patients. Different spheres of their life and difficulties (financial, social-psychologic, production) were examined in families with such patients. The defects of psychiatric care that had direct influence on the quality of life of the psychiatric patients' relatives are outlined.