宝钢电镀锌无铬耐指纹钢板的特性研究

研究了宝钢电镀锌无铬耐指纹钢板的各项性能,包括耐蚀性、耐指纹性、耐黑变性、涂装性、附着性、导电性、耐溶剂性、表面形貌等,以了解产品特性并提供相关的技术参考,同时将无铬耐指纹钢板特性与原含铬产品作了对比.结果表明:宝钢电镀锌无铬耐指纹钢板各项性能已接近或达到含铬产品的水平,标志着宝钢电镀锌耐指纹钢板生产步入一个新的标志性阶段.     

环保无铬耐指纹热浸镀锌钢板涂装前处理工艺的研究

通过试验研究了不同的涂装前处理对热浸渍镀锌钢板表面无铬耐指纹皮膜的影响,并提供了相关技术参考。结果表明,通过对脱脂清洗和磷化工艺参数的优化控制,可优化环保无铬耐指纹处理热浸镀锌钢板优良的外观与烤漆性能。     

家电用无铬耐指纹热镀锌钢板的研制

论述了研制与生产家电用无铬耐指纹热镀锌钢板的一系列关键问题,包括处理剂的开发和钢板生产技术.介绍了处理剂的组成和物理性质,无铬耐指纹膜的性能,带钢表面质量控制技术,耐指纹涂层质量控制技术.分析了无铬耐指纹皮膜膜重及其均匀性、带钢表面粗糙度和带钢表面质量对钢板相关使用性能的影响.通过采用合适的无铬耐指纹药刺和合理的生产工艺参数,开发的钢板各项性能指标均达到交货技术标准,成为以电脑机箱为代表的家电用新型材料.     

宝钢热镀锌无铬耐指纹产品

比较了热镀锌含铬耐指纹钢板和无铬耐指纹钢板的涂层结构,研究了宝钢热镀锌无铬耐指纹钢板的各项表面特性,包括耐蚀性、耐指纹性、导电性等,并根据家电用户的使用特点,针对性地设计了耐湿热性、耐高温性、耐溶剂性、涂装性等性能的实验室评价方法。详细阐述了耐指纹膜厚度与该产品表面电阻值以及通过率之间的关系。结果表明,宝钢热镀锌无铬耐指纹钢板性能优良,基本能够满足用户的需求。     

表面处理研究10年之进展

近十年来,以延长钢铁制品寿命,赋予钢铁制品的特殊性能为目的,对热镀、电镀及有机涂层等表面处理技术进行了广泛的研究,作为汽车用防锈钢板的热镀锌钢板及有机涂层钢板的发展促使了镀锌钢板生产量的大幅度增加;在家电及办公器材用钢方面,在进行防锈性能研究的同时,又开发了具有润滑性和耐指纹性等特殊功能的钢板;在饮料罐用材方面,开发出的PET薄膜钢板已经形成了环保概念的生产系统;在钢材、钢管用材方面,重防腐有机涂层被商品化,提高了制品的长期耐用性。     

X射线荧光光谱法测定镀铝锌板耐指纹膜重

1前言镀铝锌钢板表面再进行耐指纹处理后,赋予了镀铝锌层表面优良的耐指纹特性和良好的耐蚀性、耐热性、导电性等。冷轧板厂生产两种类型的耐指纹钢板,一种是无Cr（VU耐指纹型,应用的是以Zr盐为主的耐指纹液;一种是有Cr（VI）耐指纹型,应用的是传统含Cr（VI）钝化型耐指纹液。     

表面处理研究10年之进展

近十年来,以延长钢铁制品寿命、赋予钢铁制品特殊性能为目的,对热镀、电极及有机涂层等表面处理技术进行了广泛的研究,近年来作为汽车用防锈钢板的热镀锌钢板及有机涂层钢板的发展促使了镀锌钢板生产量的大幅度增加,在家电办公器材用钢方面,在进行防锈性能研究的同时,又开发了拥有润滑性和耐指纹性等特殊功能的钢板,在饮料罐用材方面,开发的PET薄膜钢板已经形成了环保概念的生产系统。在钢材、钢管用材方面,重防腐有机涂层被商品化,提高了制品的长期耐用性。     

攀钢环保镀锌板技术突破欧盟壁垒

正2月26日,笔者从攀钢研究院材料研究所冷板实验室获悉,攀钢成功开发出无铬耐指纹处理液,并生产出了无铬耐指纹热镀锌板等产品。据介绍,为防止钢板在储存及运输过程中产生锈蚀,需对钢板表面进行短期防腐处理,传统的做法是采     

专利信息

具有优异耐碱性和耐溶剂性的镀锌钢板 本发明涉及一种含有保护膜的镀锌钢板,主要解决现有无铬涂膜镀锌钢板在很多家电厂家冲压加工后的强碱性脱脂和酒精及溶剂清洗时,镀锌钢板表面的涂膜会发生变色甚至脱落等问题。     

无Cr自润滑膜的Zn—Ni预涂钢板

常规镀锌钢板所使用的铬酸盐处理对擦伤和其它受损部位的耐蚀层具有很好的自我修复作用,但由于铬酸盐膜中含有不环保的六价铬,欧洲到2 0 0 7年,将完全禁止其使用,因而,必须开发无Cr型涂层产品。为适应这个要求,川崎制铁开发了一种无铬型自润滑性涂镀层产品。该产品有如下特性:(1)涂层绝对不含铬;4 μm厚的润滑膜保证了良好的冲压成形性,冲压过程中不用涂油,并且在成形后有良好的外观和耐蚀性。(2 )与常规铬酸盐处理自润滑钢板相比较,摩擦系数减少一半,显示出优异的润滑性。(3)试验显示新产品有优异的润滑性,极限拉延压力比常规铬酸盐处理自…     

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.     

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.     

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)