0Cr18Ni9钢乙酸罐选择性腐蚀原因分析

文章针对乙酸罐内表面产生的选择性腐蚀,采用光学显微镜观察显微组织,并用DV-2型直读光谱仪和JSM-6380LA扫描电子显微镜携带的俄歇能谱仪对钢材、腐蚀产物和铁素体相的主要成分进行了分析,找出了产生选择性腐蚀的原因。     

The Restriction of China＇s Iron ＆ Steel Industry

The steel industry of China has made great progress. Seeing from the phase of China＇s iron and steel industry, it has played an important role for a long period. This paper started with China＇s iron and steel industry development course and prospect, analyzed the opportunities and challenges of China＇s iron and steel industry, pointed out that the resources and the environment will become the most important problems of China＇s iron and steel industry.     

BIM在预应力连续梁悬灌施工中的应用

通过运用BIM技术对预应力混凝土连续梁悬灌施工进行优化,解决了跨吉信互通特大桥钢筋优化、混凝土多孔定点振捣、预应力管道定位、钢筋定位和泵送混凝土浇筑等施工难题,取得了明显的经济效果,可为类似工程的修建提供借鉴。     

竹浆纤维弱捻浴巾织物的浆纱探讨

采用弱捻竹浆纤维纱线作为毛经纱进行毛巾织物的开发,对此品种经纱上浆的工艺进行了分析,成功进行了上浆和织造实验,所开发的竹浆纤维弱捻毛巾织物手感柔软、吸水性能良好,可提高毛巾产品的附加值。     

珍珠纤维针织运动面料的开发

介绍了利用珍珠粘胶长丝与涤纶DTY在双面大圆机上开发珍珠针织运动面料的编织工艺,并对其服用性能和热湿舒适性能进行了简要介绍。     

绿色环保纤维的运用研究

文章分析了绿色环保纤维产生的原因,构成环保纤维的一些基本要素,详细介绍了竹纤维、天丝纤维等新型纤维的结构特征、服用性能及混纺效果。这些纤维为开发一些高档的服饰面料及家纺产品提供了优质的纺织材料,满足了人们对服装舒适化、保健化、高档化、时尚化的新需求。     

电厂湿法脱硫烟囱结构选型及防腐

湿法脱硫在多个电厂的烟囱及烟道出现了较严重的腐蚀情况,对于烟囱的防腐蚀方案选择,需要根据不同时期的各项条件,统筹控制好烟囱安全可靠性与经济性的平衡点,进行选择。     

钢结构厂房施工方法

目前钢结构厂房以其结构跨度大、自重轻、安装便捷等优点在建筑业中得到广泛应用。本文通过对钢结构厂房的具体施工方法,来说明了施工中各个环节要注意的事项,以及如何提高钢结构厂房的安装质量与结构安全。     

Large Firms and Catch-up in a Transitional Economy: The Case of Shougang Group in China*

This study examines the possibility of catch-up of the Chinese steel industry, in particular the Shougang Group, with the leading global steel giants. Shougang is one of the four steel companies that have been selected by the Chinese government to constitute the core of the future Chinese steel industry. The contract system at Shougang, which operated from 1979 to 1995, unleashed an extraordinary entrepreneurial energy in the formerly traditional state-run steel plant. In the post-contract system, Shougang's range of decision-making independence in respect to the purchase of inputs, its production structure and product marketing has increased substantially compared to the contract system, when the government still controlled many of the key decisions. As a result of institutional constraint, the low value-added steel products dominate Shougang's portfolio. To challenge the established giants in the steel industry, Shougang has to divest the loss-making non-core businesses, slowly downsize employment in the core business, raise capital on the stock market and generates the resources for continued upgrading of its steel technology and diversifying its product portfolio.     

中型水闸平面直升钢闸门顶止水改造

随着我国的社会发展,水资源越来越贫乏,尤其是在一些缺水地区节水工作就日益显得重要。作为水利工程管理单位,对于水闸闸门漏水现象应引起一定重视。本文通过对江苏省江都水利工程管理处运盐闸平面直升钢闸门顶止水的改造,结合工程实际情况,从而找出传统闸门顶止水漏水的原因,并进行改造施工,对传统水闸平面钢闸门止水改造具有一定的借鉴作用。