烟机企业PDM与ERP集成方法研究

论述了PDM与ERP系统相互联系集成的必要性,分析了其集成的内容．并根据许昌烟机公司的实际情况,提出了利用中间文件的集成策略,给出许昌烟草机械公司PDM与ERP系统集成的具体实现方案及关键技术．     

PDM应用实施及与CAD、ERP的集成

介绍了PDM技术的数据形式,阐述了PDM系统的功能模块及其体系结构.针对唐山市天捷机械、汇丰家具、冶金矿山等8家示范企业在实施TiPDM过程中存在的问题进行了深入研究,提出了一套CAD\PDM\ERP系统集成的应用方案.重点阐述了PDM与CAD、ERP集成的关键技术问题,并在此基础上详细论述了怎样以Excel文件作为中间件来交换PDM与ERP的产品数据.     

PDM和ERP系统集成技术的研究

随着各个企业对信息化管理要求的不断提高,各企业均加强了对PDM系统和ERP系统的使用和研究。本文介绍了PDM系统和ERP系统集成的内容,并对PDM和ERP系统集成技术的方法、基础和实现过程进行了详细的讲解。通过基于脚本的方法对PDM和ERP系统进行集成,可以消除时间差,方法简单,效率高,不需要通过中间文件或数据库,能够广泛适用于各种企业的PDM和ERP系统的集成。     

专项生产模式下基于成组技术的制造系统集成

主要研究了专项生产方式下以成组技术为基础的CIMS集成方法，包括面向CIMS的集成的成组信息编码，基于成组编码的CAD／CAE／PDM集成，CAPP／PDM集成和PDM／ERP集成，提出了基于成组技术的CIMS集成框架，研究了贯穿于CAD，CAE，CAPP，PDM与ERT系统的统一的成组编码方案和信息编码方案，这种集成方法的研究对于推动CIMS和并行工程在专项生产企业的应用具有重要意义。     

以BOM为核心的CAPP、PDM、ERP系统集成应用

对于实施CAPP、PDM、ERP系统的企业,势必存在需根据自身的业务规则选择适合的集成方式。本文根据笔者企业的实际情况提出了基于数据库中间表的集成方式,实现了以BOM为核心的PDM、CAPP、ERP系统集成,有效地实现了企业数据流的闭环管理和信息集成。     

企业信息化系统应用平台

本文分析了成套电器企业的生产特点和企业信息化应用的现状和需求状况,指出成套电器企业信息化平台应该是建立在PDM基础上的包括CAX/CAPP/PDM/ERP的综合应用平台。在这一平台构架中,PDM负责管理设计和工艺的信息集成,生成设计BOM和工艺BOM,形成ERP的基础数据,而ERP负责订单的原始信息流输入、物流和资金流。PDM和ERP通过相应的设计接口,统一数据库交换信息。并在J2EE平台下,建立企业PDM和ERP系统原型。在系统实施时,分阶段的采用模块化结构,构建了系统的企业信息化平台。作为应用示范,在较短时间内,完成了一家成套电器厂企业信息化系统的实施,并取得了显著效果。但是,关于成套电器企业的CIMS技术和企业信息化系统的研究及应用仍有待深入。     

PDM/ERP与企业信息化

在ERP的实施中“数据问题”是其关键之一,必须首先解决。PDM系统作为各个信息孤岛的桥梁将CAD／CAPP以及ERP系统有机地集成到一起,使CAD与CAPP自动为ERP提供准确、完整、规范的数据,因此,PDM模块是ERP成功实施的关键。企业信息化的程序首先是实施CAD／CAPP／PDM,根据其实施情况和应用效果,然后在此基础上实施ERP就有了保证。     

《产品全生命周期管理技术——企业制造资源管理》

产品全生命周期管理（Product Lifecycle Management，PLM）来源于过去十几年对PDM／CAx／CIMS等信息化方案的积累与凝练，是最近几年才流行起来的概念。PLM是实施企业信息化战略的十分重要的组成部分。从战略上说，PLM是一个以产品为核心的商业战略，包含完整的机械的、电子的产品数据、软件用文件信息，结合了一整套技术和最佳实践的方法，能够开拓潜在的业务并且能够整合现在的、未来的技术和方法。本书叙述了企业资源规划ERP理论及其核心框架，并在介绍企业制造资源管理技术时重点强调企业制造资源管理与PLM的集成。书中先后讲述了企业制造资源管理的基本功能、扩展功能，以及集成技术与先进管理思想、企业制造资源管理的实施和案例。本书可让读者掌握企业制造资源管理的基本原理和实施方法。     

信息分类编码技术在机械制造业的应用研究

本文从机械制造企业信息化过程入手,介绍信息分类编码在企业信息化中的重要性,对信息分类编码技术进行了较为详细的阐述,重点介绍烟草机械制造企业信息分类编码的方法、信息分类编码的原理与编码的内容.介绍了信息分类编码系统与CAD/CAPP/PDM/ERP等应用系统的关系,并结合实际应用,列举了具有代表性的原材料、外购件、零件特征码等几种分类编码方法.     

中国制造业TPS/ERP集成模式与技术实现

在分析了现有有关TPS／ERP集成研究问题的基础上,研究了基于完整的TPS管理理念下的TPS／ERP集成管理模式与关键实现技术,该模式将为快速提高我国企业的管理水平与管理竞争力提供可供参考的基本途径。     

Insertion of triangulated surfaces into a meccano tetrahedral discretization by means of mesh refinement and optimization procedures

In this paper, we present a new method for inserting several triangulated surfaces into an existing tetrahedral mesh generated by the meccano method. The result is a conformal mesh where each inserted surface is approximated by a set of faces of the final tetrahedral mesh. First, the tetrahedral mesh is refined around the inserted surfaces to capture their geometric features. Second, each immersed surface is approximated by a set of faces from the tetrahedral mesh. Third, following a novel approach, the nodes of the approximated surfaces are mapped to the corresponding immersed surface. Fourth, we untangle and smooth the mesh by optimizing a regularized shape distortion measure for tetrahedral elements in which we move all the nodes of the mesh, restricting the movement of the edge and surface nodes along the corresponding entity they belong to. The refining process allows approximating the immersed surface for any initial meccano tetrahedral mesh. Moreover, the proposed projection method avoids computational expensive geometric projections. Finally, the applied simultaneous untangling and smoothing process delivers a high‐quality mesh and ensures that the immersed surfaces are interpolated. Several examples are presented to assess the properties of the proposed method.     

Certification Institutions Expected to Update and Transfer Information on Present Standards

Standards are the basis for production enterprises to organize production, ex-factory inspection, trade (delivery) and technical exchanges, product certification, quality arbitration and supervision.……     

From Industry 4.0 to Research 4.0. Development of High Performance Fibers in the Light of Digitization

We associate a variety of innovations with the term ＂Industry 4.0＂. The pioneer of many 4.0 modifications forms the basisfor the trend towards the integrated di...     

Flow calorimeter for enthalpy increment measurements on condensed gases

A flow calorimeter for enthalpy increment measurements on condensed gases is presented. A better knowledge of the properties of the liquefied natural gas is needed, and therefore a liquid loop has been designed for our flow calorimeter. The fluid loop in the calorimeter is designed in order to avoid the two-phase region, since two phases would give compositional disturbances in the measurements. The avoidance of the two-phase region is made possible by increasing the pressure of the test fluid after the measurement section, then heating the fluid at super-critical pressure past the critical point. Finally, the fluid is throttled to the low-pressure gas state at the inlet condition of the compressor that circulates the fluid. To perform the pressure increase, a new cryogenic pump has been designed. To evaluate the new equipment, measurements were taken on liquid ethane over the temperature range 146–256 K at pressure between 0.9 and 5.1 MPa.     

Refrigerators Enter a New Era of Health Preservation Frestech initiates the establishment of China's first standard for household sterilization refrigerators

On November 30, 2007, the China Association for Standardization (CAS) held a press conference at Beijing Diaoyutai State Guest House. Leaders from the China Household Electric Appliance Research Institute, the China Household Electric Appliance Association, and the China Consumers' Association attended and made speeches.……     

Optimum-Simulation von Ernteprozessen

Zusammenfassung Bei der Gestaltung von Ernteprozessen — beispielsweise des Prozesses Mähdrusch, Körnertransport und -abnahme — als transportverbundene Fließarbeitsverfahren mit mindestens zwei verschiedenen Arbeitsmitteln gibt es einen großen Optimierungsspielraum. Solche Prozesse sind mehrstufige Bedienungsprozesse mit gemischter Anordnung der Bedienungseinrichtungen. Außerdem besitzen sie stark ausgeprägte räumliche Aspekte. Es wird vor allem gezeigt, welche Merkmale solcher Prozesse in Simulationsmodellen abgebildet sein müssen, welche Zielgrößen in Abhängigkeit von welchen Einflußgrößen unter Berücksichtigung welcher Prozeßbedingungen ermittelt werden sollten und wie der Bewertungsprozeß zur Ermittlung der gewünschten Informationen gestaltet werden muß.     

Roman iron and steel: A review

ABSTRACT

The production of ferrous metal increased during the Roman Late Republican period, Principate and Empire. The direct bloomery process was used to extract the metal from its ores using slag-tapping and slag-pit furnaces. The fuel was charcoal and an air blast was introduced by bellows-operated tuyères. Iron formed as a bloom, often as a spongy mass of metal, which contained impurities from the smelting process, including unreacted ore, fuel, slag and fragments from the furnace walls, while the metal was often inhomogeneous with varied carbon contents. Blooms were either smithed directly into bars or ingots or they were broken up, which also allowed the removal of gross impurities and a selection of pieces with similar properties to be made. These could then be forge-welded together and formed into characteristically shaped ingots. Making steel in the furnace seems to have been achieved: it depended on the ore and the furnace and conditions within it. Surface carburization was also carried out. Iron and steel were used extensively in construction and for tools and weapons. Fire welding was often used to add pieces of steel to make the edges of tools and weapons, which could be heat-treated by quenching to harden them.     

A study of centrifugal cast high boron high speed steel

In the present study a high‐boron high speed steel (HSS) roll material was designed. Many expensive alloy elements have been substituted by cheap boron alloy, and high‐boron high speed steel roll has been manufactured by centrifugal casting method. The microstructures, mechanical properties and wear resistance of centrifugal casting high‐boron high speed steel roll have been investigated by optical microscopy (OM), scanning electron microscopy (SEM), and X‐ray diffraction (XRD) analysis, hardness test, impact test and wear test. The results indicated that the solidification microstructures of high‐boron high speed steel roll consisted of M₂(B,C), (W,Mo)₂(B,C), M₃(B,C), M₂₃(B,C)₆ type borocarbides and martensite, a small amount of retained austenite. Borocarbides were continuously distributed over the grain boundary. After quenching from 1050 °C, local broken network appeared in partial borocarbides, and fine secondary borocarbide precipitated from the matrix. After tempering from 525 °C, the amount of precipitated borocarbide increased significantly. After heat treatment, the hardness of high‐boron high speed steel roll excelled 60 HRC, and its impact toughness excelled 8.0 J/cm². The single groove steel rolling amount of high‐boron high speed steel rolls increases by 500% than that of bainite cast iron roll, when the rolls are used in K₁ mill housing of bar mill.     

Brainstorming for ISO Strategy 2016-2020

正Responding to ISO’s appeal for survey for the to-be-developed ISO Strategy Plan for 2016-2020,SAC hosted a special workshop over the needs and comments of various fi elds on June 8 in Beijing.The workshop was attended by ISO President-elect and Ansteel General Manager Zhang Xiaogang,SAC Vice-Administrator Yu Xinli,and 30 experts from