线棒材厂粗中轧机联合减速机的设计特点

阐明了联合减速机设计过程的基本特点，提出了联合减速机的发展方向。对线、棒材厂粗中轧机联合减速机的设计具有实用价值。     

线与棒材厂粗中轧机联合减速机设计特点

结合多年来设计线、棒材厂粗中轧机联合减速机的实际情况,阐明了联合减速机设计过程的基本特点,得出了如何选择齿面硬度、齿轮材料及热处理方式,如何确定输出扭矩,如何选择齿轮副的精度、寿命、安全系数,如何进行通用化设计,如何选择箱体结构和轴系结构,如何确定轮齿旋向和齿轮旋转方向,以及如何进行润滑配管设计等主要结论.提出了联合减速机今后的发展方向.对线、棒材厂粗中轧机联合减速机的设计具有实用价值,对其他减速机的设计也有一定的参考价值.     

狭窄厂房空间150t钢包回转台安装方案介绍

针对狭窄厂房空间150 t钢包回转台的安装,研究设计了专用的两跨双台行车联合抬吊方案。设计和制造了双台行车联合抬吊的平衡梁吊具,并针对小曲率穿索半径,设计制造了专用的尼龙吊带进行穿索吊装。通过结合过渡支架平台的设计安装,运用两跨双台行车联合抬吊的新方案,成功实施了狭窄厂房空间150 t钢包回转台的安装,并保证了安装精度,安装过程安全可靠。     

φ177．8mm钢管联合探伤生产线

介绍了钢管联合探伤设备联合探伤中的管尾、头对齐,物料跟踪和高精度抱芯装置的设计,为联合探伤生产设备的成套国产化奠定了一定基础。     

不同市场条件下金属露天矿分期方案动态优化

不同市场条件下金属露天矿分期方案动态优化有关于金属露天矿分期方案动态优化的整体方案的设计与实施,是结合采选联合优化的一部分内容,针对地下采选一体化实现的露天金属矿采选联合优化,露天金属矿采选联合优化也是与金属露天矿分期方案动态优化相关,对于采选联合优化的选矿过程都是存有金属露天矿分期方案动态优化的内容,这就需要施工人员和设计者在涉及到井下的内部转化以及其他金属露天矿分期方案动态优化部分的过程中能够对于一些采选联合优化的内涵做出详尽的了解和分析。比如地下采矿中通常采用一体化设计,但是这种设计的缺点就是难以进行露天金属矿采选联合优化,但是对于矿山开展的试验性研究工作还是有利的,能够实现按空间位置的一体化是采选联合优化的内涵及发展历程的关键。     

计算机在铝板带纵横联合剪切机组中的应用

论述了我院设计的纵横联合剪切机组的设备组成、控制原理及计算机的应用     

三辊联合穿轧机的设计改进

对原有三辊联合穿轧机结构上存在的问题进行了改进设计，并取得良好效果。     

大型铜联合冶炼企业电源比较及供电方案优化

大型铜联合冶炼企业生产工艺复杂、工程规模庞大,用电量需求大。本文介绍了冶金企业电源及供电系统设计相关要点,结合工程实例,对大型铜联合冶炼企业的电源方案选择及供电系统优化设计进行比较和探讨。     

永定永华电化锰厂电解金属锰通过省级鉴定

5月5日福建省冶金工业厅在福州主持召开了永定永华联合电化锰厂电解金属锰鉴定会议。永华联合电化锰厂是由福建省锰矿公司、永定县、永定坎市联营供电所等三家联合投资建设的。该厂由冶金部全国锰矿技术委员会负责设计和现场指导,建成生产     

铝轮毂固溶热处理联合电炉的设计

介绍了铝轮毂固溶热处理联合电炉的设计方法、结构特点、炉子组成以及需要注意的问题。     

Collaborative Planning and Scheduling of Interrelated Design Changes

During the detailed design stage of a building project, a vast amount of mostly interrelated design information is generated and communicated among specialists from several disciplines. Changes in some design information are inevitable due to the iterative nature of the design process. In many cases, when the design of a building component is modified by one discipline, this change affects the design of many related building components that are the responsibility of several other design disciplines. Commitment and resources are needed to accommodate such design changes to maintain compatibility among all the design information. Otherwise, incompatibility errors become embedded in the design information leading to numerous problems during the construction of the project. This paper presents a computer-assisted methodology that helps design managers in planning and scheduling changes with interrelated effects on the design information.     

Identifying a Design Management Package to Support Concurrent Design in Building Wafer Fabrication Facilities

Concurrent design is commonly used in building a semiconductor wafer fabrication facilities to shorten projects. Current practice in managing a design schedule involves preset milestones that represent percentages of completion. Such a simple control scheme does not provide sufficient information to support concurrent design. This study presents an analytical model that applies a cluster identification algorithm to separate the work of designing a multisystem project into management packages that support concurrent design. Tasks within a package have strong informational dependency relationships on each other, and are not suited for concurrent design. Tasks of different packages have weak dependency relationships on each other, and are suited for concurrent design. Tendering design work based on these packages may reduce the number of design interfaces between participating design firms. Possible application of the model includes the management of design schedule, design contract tendering, and design information flow.     

对展示设计的探讨

展示设计在当今信息时代应用越来越广泛，其实用价值越来越高，设计效果备受社会关注。本文论述了展示设计的基本概念和特性，结合笔者多年设计工作经验和体会提出了展示空间设计的基本原则和在展示环境设计中对功能空间的处理方式，供展示空间设计者在设计工作中借鉴。     

Sources of Changes in Design–Build Contracts for a Governmental Owner

In recent years, many U.S. federal, state, and local governments have been authorized to use the design–build method of project delivery instead of the traditional design–bid–build method. Recent studies have not been definitive on the cost advantage of design–build for governmental owners. There are fewer change orders in design–build due to design errors because the designer (architect/engineer) and contractor are one entity, but there are other causes of change orders. Some literature suggests that changes requested by the owner of the facility are greater with the design–build method. This research examines the causes for construction-phase changes in 14 design–build and 20 design–bid–build projects. Total changes, expressed as number per contract, cost per contract, or percentage of original contract, were significantly lower in design–build. Fewer design errors in design–build accounted for this advantage. The number of owner-requested changes was significantly greater in design–build. The cost of owner-requested changes, averaged over all the projects, was significantly less for design–bid–build. The differences in changes due to differing site conditions were not significant. The concept that there are more owner-requested changes in design–build projects is supported by this research.     

浅谈结构设计中的质量管理

本文通过对建筑结构设计前期质量管理,设计过程质量管理,设计后期质量管理的阐述,分析了建筑结构设计全面质量管理的过程,简洁透明、便于掌握。有效地执行建筑结构设计全面质量管理是设计单位在同行业竞争中的关键因素。     

Design Structure Matrix Implementation on a Seismic Retrofit

A void exists in development of design theory methodology within the structural engineering community. This void hampers efforts to resolve performance deficiencies including cost over-runs, unplanned rework, and suboptimal design. In manufacturing, product design and production improvements have resulted from implementation of the design structure matrix (DSM) methodology. DSM offers a means to represent, analyze, and decompose complex systems in order to improve their performance. DSM use within the architecture engineering construction (AEC) industry has been sporadic and focused primarily in the U.K. Where applied, DSM has proven effective at helping AEC design teams streamline processes to address nonlinearity (nonsequential information flows) introduced by iteration and complexity in design. When a DSM reveals iteration and highly dependent work, group brainstorming, collocated design sessions, rapid feedback, set-based design, and collaborative design aids can be used to increase overall team effectiveness. This paper examines a case study where DSM-based planning software was used on a seismic retrofit project to drive process improvement in design management. DSM correctly identified iterative activities central to design and provided the following; (1) a common vocabulary to discuss rework in the context of a multidisciplinary design team; (2) a rational method to schedule team collocation and brainstorming efforts to maximize their benefit; and (3) a means to consider iterative activities (and associated hand-offs) in design work structuring.     

Renovation Projects: Design Process Problems and Improvement Mechanisms

This paper presents a case study of a recent office renovation project. The paper investigates the problems that occurred during the design process, analyzes the causes of design iterations and rework, and proposes changes that can improve the design process. The analysis illustrates two design challenges that cause iterations and rework: (1) preexisting, hidden conditions identified late in the design process, and (2) limitations of downstream systems that were not accounted for in upstream decisions. The recommendations propose mechanisms to reduce design rework and duration, and increase the quality of the design solution. The recommendations are (1) to accelerate the discovery of existing conditions, (2) to identify the project constraints that design and construction have to meet, (3) to select the project team early, and (4) to accelerate the iterative design process with a team-based rapid development of schematic design (rapid prototyping).     

Concept for Type-Local Instance–Global Instance Object Modeling and Application to Structural Design of Buildings

Rational data modeling is prerequisite to the computerization of design, and the use of design information in the subsequent work, in areas such as cost estimation and construction. In particular, the structural design of buildings consists of a long series of unit steps and is nonprocedural and data intensive compared with structural analysis problems that are procedural and computation intensive. Hence, there is a need to investigate the characteristics of the problem and to structure design information properly to effectively manage it in the structural design process. This paper discusses modeling concepts for managing design information efficiently and supporting the design process effectively. Type-local instance–global instance object modeling is the conceptual backbone of the model in this study and provides consistent modeling of structural components including not only primitive members such as beams and columns, but also composite elements such as floors, frames, and even whole buildings. This paper also provides core and extended object concepts for classifying structural design information into an overall design and for processing dependent temporary stages in the design. Foundational and application object concepts are introduced for extending the model to various types of structures. An integrated structural design system for buildings is developed based on these modeling concepts, and finally a brief discussion of the application of the object model throughout the entire structural design process in the integrated structural design system is given. It is expected that the modeling concepts proposed in this research can be applied to a range of other engineering applications.     

略谈平面设计中插画图形的辅助设计

插画图形设计被越来越多的平面设计工作者青睐,青睐于它的原创性和可应用性。因为插画图形设计的出现,使得设计工作者能够延展自己的艺术设计风格,定位自己的艺术理念,因此,插画图形设计已经成为平面设计工作者设计作品中的重要元素之一了。     

冶金机械绿色设计应用关键问题研究

绿色设计是冶金机械制造业的发展方向,对绿色设计应用的关键问题进行了分析.针对目前推广应用冶金机械绿色设计出现的问题,介绍了绿色设计的基本原则、方法、关键技术和后评价体系,为相关设计人员提供参考.