8591D型贯通式抛丸机的改造

介绍了某柴油机厂所用8591D型贯通抛丸机的使用概况及大修改造方案。改造实施后达到理想的使用效果。     

XK9350螺纹铣床升级改造与应用

分析了XK9350螺纹铣床托板及铣头主轴系统的结构缺陷，介绍了XK9350螺纹铣床整机改造方案、实施措施及改造后现场运行效果。     

抚顺特钢R12 m方坯连铸机改造

阐述了抚顺特钢第一炼钢厂4机4流方坯连铸机增加圆坯品种技术改造工程的改造原则、方案及设备改造的实施情况,改造后的效果进行了介绍。连铸机的成功改造与运行对同类设备的改造有示范和借鉴作用。     

热轧带钢卷取温度控制系统的双重化改造

针对卷取温度控制系统分步改造的特点，实施了双重化改造方案。介绍了此次改造内容，包括网络配置和全局变量的修改，L2级应用系统的修改和完善及功能调试。此次改造不仅缩短了工期，而且改造后控制精度和水平稳步提高。     

德国RM-360内外滚道超精机的数控化改造

本文介绍了RM-360内外滚道超精机数控化改造的方案,以及改造过程中关键技术问题的具体解决方法,此次改造方案的成功实施对某些老数控系统的改造具有一定的借鉴作用。     

2×1600t压铝机控制系统的改造

本文通过对压铝机及其原电器控制系统的介绍,提出了采用PC的改造方案,以及方案的全部实施过程。新系统由两台PC作为控制核心,投入运行后,效果极好。     

中板横剪机上刀架平衡装置改造

本文分析了临钢中板横剪机上刀架平衡拉杆损坏的原因 ,介绍了改造方案和实施效果     

中型型钢轧机改造方案探讨

论述了我国中型型钢轧机改造的必要性,并较详细地介绍了中型型钢轧机改造后的产品、各种改造方案以及万能轧机选型。     

FS41M15数控铣床的技术升级改造

分析FS41M15数控铣床技术升级改造的可行性,阐述改造的实施过程。介绍设备改造前的状态及改造要求,重新设计电气控制系统和故障诊断报警系统,优化主轴控制方案。改造后机床的精度和性能到达用户的要求,产生较好的经济效益。机床的技术升级改造,不仅节省设备投资费用,而且能提高机床性能,是一种较理想的旧机床再次利用的方法。     

高压水除鳞系统适应性改造

分析了高压水除磷装置部分备件存在的缺陷,介绍了结构改造方案和改造后的现场运行效果。     

科研选题与科技成果转化的探析

笔者阐述了科研选题与科技成果转化的目的、意义、原则及其过程。指出选题的目的是要确定有前景、有价值,能取得有效成果的题目;而成果又必须通过项目的形式,转化为直接的生产力,才能发挥其社会经济效益,为人类做贡献。     

基于提高临床试验管理效率的全流程信息化管理系统研发探讨

药物临床试验机构应用信息技术手段对临床试验实施过程进行监管,可以保证试验操作的规范化,提高临床试验质量管理效率。本文介绍了本机构研发临床试验全流程信息化管理系统的情况,并就系统构建的合规化和应用的安全性进行探讨。     

Using quality control to limit bismuth in copper cathodes

This article describes quality-control work at Phelps Dodge, undertaken as part of ISO 9003 certification, to better identify and prevent the contamination of copper cathodes by bismuth. It also overviews the implementation of a production control system as well as associated training designed to minimize the possibility of bismuth-contaminated copper progressing beyond the cathode stage to other areas of manufacturing or distribution.     

“TRIZ”理论是科技创新的现代化工具

本文概括地叙述了科技创新的现代化工具——TRIZ理论的概念、起源、用途、特点,基本原理,包含内容,解决问题的过程,在国外的应用情况及产生的经济社会效益,在中国的应用情况等。指出TRIZ理论在自主创新国家总战略实施中具有基础性、源头性、根本性、先导性、战略性意义,是提升国家自主创新能力的重要武器。     

Thermal spraying II: Recent advances in thermal spray forming

Over the last 50 years, thermal spraying has evolved and is now capable of depositing free-standing materials onto mandrels at thicknesses exceeding 100 mm. Advances in processing (including high-velocity oxy-fuel, inert/chamber plasma spray, and improved powder compositions and morphologies) have combined to enable the successful implementation of thermal-spray forming for both monolithic and composite materials. This article, the second in a series on thermal-spray processes, describes some of the recent advances in the application of thermal-spray forming.     

Investigations on the chloride transformation during the electrochemical chloride extraction process

Structures of reinforced concrete attacked by chlorides from de‐icing salts can be repaired by use of electrochemical methods, such as Chloride Extraction (CE). This article describes an experiment to investigate the relationship between the electrical charge applied, the chloride contents in the concrete before and after the extraction process, and the amount of chlorides in the electrolyte in order to get knowledge about the efficiency of a CE application. An assumption about the chloride transformation during CE will be made.     

新形势下氧化铝工艺烧结法改拜耳法的实践突破

本文介绍了我国烧结法制取氧化铝工艺改造成拜耳法的必要性,以及改造方案的选择依据.着重阐述了原料磨,沉降槽,分解槽、赤泥旋流分砂等各环节的改造过程.改造后的精液Al2O3产出率最高达到91.5kg/m3,循环效率达到134.5kg/m3 -调配度,每吨氧化铝降低能耗1.03吨标准煤,年创造经济效益7千万元左右,为我国氧化铝行业探索高效发展提供了有力借鉴.     

Body-in-white material systems: A life-cycle cost comparison

To be competitive in the global automobile industry, it is no longer enough to understand manufacturing cost alone. The growing emphasis on environmental impact has forced life-cycle cost issues to the forefront. This article defines the life cycle of automotive structures and exterior panels—the body-in-white—to include manufacturing, operation, and post-use. These body-in-white life-cycle costs are assessed for a midsize, four-door sedan using an implementation of a technique called technical cost modeling. This article describes the life-cycle cost-assessment methodology and applies it for alternative body-in-white structure and exterior panel materials. These include steel stampings; aluminum stampings, extrusions, and castings; and resin/glass composite and thermoplastic moldings. The life-cycle costs are presented and analyzed for varying manufacturing scenarios. Although life-cycle costs currently do not drive the decision-making process in the automotive industries, legislative and consumer pressures could one day give them added weight.     

Diffusivity Measured by X-ray Diffraction

The advancement of x-ray diffraction theory and techniques, combined with established diffusion models, enables the rate controlling parameter(s) of a transformation or reaction process to be conveniently measured in an in-situ manner. This article briefly describes the technique employed for kinetics measurements and analytical procedures required for data interpretation. Two approaches are adopted to extract the interdiffusion coefficient from the kinetics data—the direct space approach and the reciprocal space approach. Three examples are presented to demonstrate the usefulness of this analysis: the growth kinetics of a Pd₂Si layer on Si, the decomposition kinetics of a supersaturated Ni-Si alloy, and the short range ordering of a nonrandom solid solution.     

Developing an integrated information system in a modern aluminum smelter

The developments in the aluminum markets demand that more use be made of the information available within a smelter. Quality must be made measurable and verifiable; the organization continually must be optimized, and the production processes must be steadily improved. Costs have to be supervised, deviations immediately reported, countermeasures taken at once. These elements offer protection against the pressure of the market and allow competitive high-tech products to be produced and timely investments to be targeted and made. With the help of information technology, it is ever more possible to keep up with these demands. This article describes the design and realization of a completely integrated data transmission system in a modern aluminum smelter operated by VAW Aluminium AG. Several examples of practical implementation are given.