钢铁企业柔性生产运营的组织与实施

柔性生产是针对大规模生产的弊端而提出的新型生产模式。叙述了柔性生产的原理和应用特点,介绍了某钢铁企业在生产组织结构、生产工序、员工培训、生产计划、生产过程等方面采用柔性生产的措施,以及在市场、生产、库存、质量等方面取得的成效。     

天铁集团炼铁生产管理系统实施方案综述

介绍了炼铁生产管理系统，该系统以生产计划和生产调度为主线，自顶向下将生产过程产生的信息和经营管理信息进行转换、加工、传递，使生产过程控制更加合理，实现了生产过程智能化。     

基于启发算法的现代企业生产调度研究

针对现代企业生产制造信息化中常见的多品种、小批量、高质量的生产特征,从不同产品在生产过程中所经历的组装时间角度出发,研究如何进行生产调度以缩短总生产时间和周期,基于生产特点,提出了一种能有效缩短产品生产调整时间的生产调度启发式算法。经仿真数据显示,该算法能够给出较满意的生产调度方案,从而为企业提高了生产效率。     

生产管理系统信息化建设的初步构想

生产管理信息化是有效控制生产过程和提高生产管理效率的主要手段,本文结合公司生产管理现状,提出了公司生产管理信息系统的基本框架。     

基于OPT的炼钢-连铸生产调度问题研究

将最优化生产管理技术 (OPT)思想应用于钢材的冶铸轧生产调度 ,给出优化的瓶颈工序生产调度模型。计算结果分析表明 ,适用于离散型生产系统的OPT在冶金生产系统同样取得提高生产利用率、缩短生产周期、降低库存和成本的显著效果     

SAP系统在生产计划管理中的应用

介绍了安钢SAP系统中生产计划管理的主数据管理、生产计划管理、生产订单执行、生产管理与成本管理的集成实现等,该系统完成了生产计划与管理控制一体化,实现了生产模式的跨越发展。     

菜芜钢铁集团生产计划管理研究

在深入分析莱芜钢铁集团生产特点的基础上,提出了基于规则的分型生产调度,同时分析了与其他生产管理子系统的计成关系.可改变仅靠人工临时协调造成的生产忙乱现象,提高分厂之间协同生产的能力,降低在制品库存,在降低企业生产成本的同时,提高生产效率和管理水平,实现企业生产计划调度的整体统优化.     

联合荣大企业集团

联合荣大企业集团下辖一个研究院（北京联合荣大工程材料研究院）,四个生产基地（成都生产基地、北京怀柔生产基地、南京生产基地和西安生产基地）和太原、邢台、承德等销售分公司。     

联合荣大企业集团

联合荣大企业集团下辖一个研究院（北京联合荣大工程材料研究院）,四个生产基地（成都生产基地、北京怀柔生产基地、南京生产基地和西安生产基地）和太原、邢台、承德等销售分公司。     

基于层次分析法的牧草生产机械化可持续发展路径分析

运用层次分析法,以牧草生产机械化可持续发展为总目标,以经济发展、生产方式、装备水平、技术进步和生态改善为准则层,构建了我国牧草生产机械化可持续发展影响因素的层次结构模型.计算结果表明,依据对总目标作用程度的大小,各种影响因素依次为政策支持力度、牧草生产机械研发推广力度、牧草生产机械制造水平、牧草生产机械化作业程度、牧草生产机械化社会化服务程度、牧草生产机械装备总动力和牧草生产机械化作业成本.可持续发展的政策路径是是加大政策支持力度,强化牧草生产机械研发推广力度,提高牧草生产机械制造水平.     

提高3003合金扁锭产品的合格率

分析了中铝公司青海分公司铸造产品3003合金扁锭的合格率现状及存在的一些影响合格率的因素,提出了提高3003合金扁锭的合格率的有效措施,从而达到了控制目标要求。     

影响铝电解电容器用铸轧坯3003负极铝箔品质的要素分析

对铝电解电容器用铸轧坯3003负极箔产品的化学成分控制、配料、熔炼与连续铸造以及轧机控制系统、轧辊、轧制油的选择和管理等方面进行了分析,阐述了坯料生产到成品加工过程影响铸轧坯3003负极铝箔品质的技术要点。     

Direct-Chill Co-Casting of AA3003/AA4045 Aluminum Ingots via Fusion™ Technology

Laboratory-scale experiments were conducted to cast AA3003/AA4045 clad ingots via Fusion? Technology, a novel process developed by Novelis Inc. for the production of aluminum clad materials such as brazing sheet. Experimental results were used to validate a steady-state thermofluids model of the Fusion? Technology co-casting process. The numerical model was able to accurately predict the temperature field within the AA3003/AA4045 clad ingot as well as the shape of the AA3003 liquid sump. The model was also used to quantify the temperature, fraction solid, and velocity fields in a clad ingot cast with an asymmetrical molten metal-feeding system. Feeding of core and clad molten metals at opposite corners of the mold was found to reduce the risks of hot spots and liquid metal breakthrough from the core sump to the clad side of the Fusion? Technology mold. The use of a diffuser for the AA3003 core molten metal and of a vertical feeding tube for the AA4045 clad produced different flow patterns and liquid sump shapes on either side of the mold. The quality of the metallurgical bond at the core/clad interface appeared good near the clad inlet and at the ingot centerline, but poor near the edges of the ingot. SEM–EDS analysis of the chemical composition across the interface showed that a 1 to 20-μm-deep penetration of silicon from the AA4045 clad into the AA3003 core had occurred at visually acceptable interfaces, whereas silicon diffusion across poor interfaces was very limited. A study of the model-predicted fraction solid history at different points along the interface indicated that reheating of the AA3003 core is not required to form a visually acceptable metallurgical bond. However, a sufficient amount of interaction time between the solid AA3003 core shell and the silicon-rich AA4045 clad liquid is required to chemically dissolve the surface of the core and form a good metallurgical bond. An approximate dissolution depth of 750 to 1000 μm was observed along the visually good interface. Partial dissolution of the Mn-rich AA3003 core led to the formation of Al(Mn,Fe)Si intermetallic particles in the AA4045 clad and an increased manganese concentration near the core/clad interface.     

热轧3003合金板带材生产工艺优化

通过生产实践,依据铝及合金板带材缺陷的影响因素,确定了热轧3003合金板带材导致表面晶粒粗大的原因,优化了该产品的生产工艺制度。     

铝合金扁锭弯曲的成因及预防措施

结合某厂竖井铸造生产3003、1100等铝合金扁锭的实际情况,对铝合金扁锭生产过程中出现弯曲现象的各种原因进行分析,提出了合理的预防及控制措施.     

3003铝合金板带材生产工艺研究

试验和讨论了铸轧3003冷轧生产工序的退火温度与保温时间,冷变形量等对该合金板带材再结晶退火后组织与性能的影响,提出了一些可获得良好晶粒度和机械性能的生产工艺技术.     

3003＋1．5％Zn合金铝板带生产工艺研究

结合3003＋1．5％Zn合金生产实践,着重研究了通过铸轧供坯,冷轧生产厚度为0．10mm空调铝箔,不同的工艺流程和退火工艺对产品性能的影响。     

A Coupled Crystal Plasticity and Anisotropic Yield Function Model to Identify the Anisotropic Plastic Properties and Friction Behavior of an AA 3003 Alloy

A multi-scale simulation of the tip test, developed to determine the tribological characteristics of the back-extrusion process, was conducted on an AA 3003 alloy. A microstructure-level simulation, coupled with crystal plasticity finite element (CPFE) analysis, was utilized to characterize the macro-mechanical properties of the AA 3003. Owing to the limited size of the material provided, we performed CPFE analyses rather than multiple mechanical tests to determine the plastic anisotropy characteristics of the AA 3003 alloy. A three-dimensional finite element (FE) model of the tip test was developed using two different yield functions, namely the generalized von Mises yield function and Hill’s (1948) yield function, with material parameters identified from the CPFE analyses. The results revealed the following: 1. The directionality observed during the tip test is governed by the plastic anisotropy, rather than the frictional conditions. 2. The plastic anisotropy results in different Coulomb friction values. Therefore, the anisotropy should be carefully addressed in the tip test.

     

3003铝合金幕墙板生产控制工艺优化

本文论述了3003幕墙板采用不安全再结晶退火或冷轧量来控制产品性能。文章认为在现有装备条件下经过一个的冷变形后进行中间完全再结晶退火，通过控制最终冷变形量可获得性能稳定、表现质量优良3003幕墙板，其效果优于不完全再结晶退火。     

A Numerical Study of the Direct-Chill Co-Casting of Aluminum Ingots via Fusion™ Technology

For the last 70 years, direct-chill (DC) casting has been the mainstay of the aluminum industry for the production of monolithic sheet and extruded products. Traditionally, clad aluminum sheet products have been made from separate core and clad DC cast ingots by an expensive roll-bonding process; however, in 2005, Novelis unveiled an innovative variant of the DC casting process called the Fusion? Technology process that allows the production of multialloy ingots that can be rolled directly into laminated or clad sheet products. Of paramount importance for the successful commercialization of this new technology is a scientific and quantitative understanding of the Fusion? casting process that will facilitate process optimization and aid in the future development of casting methodology for different alloy combinations and ingot and clad dimensions. In the current study, a numerical steady-state thermofluids model of the Fusion? Technology casting process was developed and used to simulate the casting of rectangular bimetallic ingots made from the typical brazing sheet combination of AA3003 core clad with an AA4045 aluminum alloy. The analysis is followed by a parametric study of the process. The influence of casting speed and chill-bar height on the steady-state thermal field within the ingot is investigated. According to the criteria developed with the thermofluids model, the AA3003/AA4045 combination of aluminum alloys can be cast successfully with casting speeds up to 2.4 mm s^?1. The quality of the metallurgical bond between the core and the clad is decreased for low casting speeds and chill-bar heights >35 mm. These results can be used as a guideline for improving the productivity of the Fusion? Technology process.