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。     

炼铁生产管理系统的开发与实践

介绍了天铁炼铁生产管理系统开发的情况,该系统采用ERP、MeS、PcS三层之间的数据集成,实现了炼铁生产物料跟踪,生产计划和配料管理及动态调整。提高了炼铁生产效率和铁水质量,降低了原、燃料消耗,达到炼铁生产管控一体化与生产过程优化。     

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。     

宝钢炼钢经济生产组织模式的实践

为了加快炼钢生产节奏,降低炼钢过程中的能耗和物耗,分析了5个转炉生产的可行性,比较了不同的生产方案,提出了特殊钢生产时的对策。实施5个转炉生产后,每天节约用电10万kW·h以上,转炉平均出钢间隔时间减少17min,钢水平均传搁时间降低3min,实现了炼钢的经济生产。     

钢铁企业面向物流的生产计划优化技术

就钢铁企业生产物流管理的实际情况 ,应用企业生产物流管理和生产运作管理的技术和理论 ,提出了优化生产计划的生产计划编制流程图 ,对流程中的两个“指标体系”以及“产品结构树”作了简要的讨论 ,同时提出了生产计划编制中定量与定性预测流程 ,讨论了生产计划的评价指标———物流平衡系数。     

烧结智能控制系统研究与应用

本文研究了烧结生产过程控制系统从配料开始到烧结的全过程,针对各个环节建立模型,实现烧结生产的智能控制。优化了烧结生产过程、提高了劳动生产率、降低了能耗,实现了烧结生产的智能闭环控制。     

喷淋式饱和器法生产硫铵工艺的应用

介绍了喷淋式饱和器法生产硫铵工艺,结合生产实际分析了影响生产操作和设备运行的多种因素,对稳定生产,提高产品质量起到了积极作用。     

不锈钢生产过程增碳原因分析与对策

不锈钢生产过程中普遍存在增碳现象,严重影响低碳不锈钢生产的稳定性。结合邢钢不锈钢生产实际,研究了增碳原因,提出稳定生产低碳不锈钢(碳含量≤0.030%)的控制措施,为不锈钢生产提供了参考。     

钢铁企业的生产物流管理模式研究

由于钢铁企业的生产是化学加工和物理加工相混合的长流程生产模式,其内部的生产物流管理具有很强的行业特点。从钢铁企业生产运行实际出发,具体分析了钢铁生产物流管理的要点,提出了钢铁企业生产物流管理的基本构成和需解决的关键问题,并进一步阐述了相应的管理策略和解决方案。     

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。     

Experimental Study of the Behavior of a Lumpy Fill of Soft Clay

Land reclamation is a major civil engineering activity in Singapore. Due to depletion of suitable local fills and the cost of imported sand, dredged and excavated clay fills, in spite of their poor engineering properties, are being evaluated as a fill material. To reduce double handling, it is desirable for the clay to be used directly in a lump form, instead of the more conventional slurry fill. While the performance of a slurry fill is relatively well understood, the behavior of lumpy fill is not. This paper reports the results of a laboratory study carried out on lumpy fill made of cubical clay lumps of size ranging from 12.5?to?50?mm. The study showed that the interlump voids are substantially closed at a consolidation pressure much lower than the preconsolidation pressure of the lumps. The study also shows that at a consolidation pressure of about 100?kPa, the permeability of a lumpy fill is reduced to an order similar to that for homogeneous clay. However, the shear strength profile obtained using the cone penetration test indicates that the fill is still highly heterogeneous under a pressure of 100?kPa. When the preconsolidation pressure of the lumps is exceeded, the strength profile becomes uniform. The degree of swelling of the lumps plays a significant role. For fully swollen lumps, the consolidation pressure required to close the interlump voids is considerably less than that if the lumps were not allowed to swell. The coefficient of secondary compression of the lumpy fill is comparable to the homogeneous clay indicating that secondary compression is not a serious issue.     

炼钢厂控制系统改造

Wonderware公司的IAS2.0(Industrial Application Server)作为一种全新的设计理念首次在冶金行业使用,软件和程序设计方面的不足是造成通讯中断的主要原因。我们通过OPC通讯方式增加转炉和精炼炉两台单机操作站,可以做到在原有系统中断的时候不影响生产。此举方法简单,成本低,容易实现,具有积极的经济效益。     

企业内部控制之我见

内部控制是形成一系列具有控制职能的方法、措施、程序，并予以规范化和系统化，使之成为一个严密的、较为完整的体系。企业的生产经营活动需要相应的内部控制制度创新作保证。在现代企业制度条件下．内部会计控制制度的内涵和外延都发生了极大的变化，建立和完善内部会计控制制度，提高职工素质是强化企业管理的重要措施。     

巷道压顶光面爆破裂隙扩展模拟及参数优化

为了优化爆破孔网参数,采用显式动力分析软件ANSYS/LS-DYNA,建立光面爆破的炮孔爆破数值仿真模型,以压顶光面爆破孔网参数变量控制模拟爆破裂纹扩展。研究结果表明：巷道压顶光面爆破孔网中设置诱导控制孔,能够有效诱导爆生裂纹的定向扩展,有利于提高光面爆破的巷道壁光滑平整度;在压顶光面爆破中,诱导控制孔的应力时程曲线拉应力表现突出,有利于诱导裂隙的扩展演化,单元受压时诱导控制孔表现为卸压应力状态;以裂隙的演化扩展曲线为评价指标,在孔网参数中添加诱导控制孔,周边孔间距取900 mm时裂隙形成的巷道壁光滑整齐,可提高光面爆破在此类地质条件下的适应性;当光爆层的爆破孔网参数采用间隔布置诱导控制孔时,工程中爆破孔间距以900 mm左右为宜。     

不同因素对布料溜槽的磨损影响价值分析

大型高炉布料溜槽所处工作环境恶劣,输料时间较长,且受多种因素影响,其磨损情况非常严重。通过建立基于离散元仿真的溜槽磨损数学模型,研究某钢铁企业大型布料溜槽的磨损情况,找出布料溜槽的主要磨损部位。利用该模型分析不同的溜槽倾角、物料粒径和物理特性等影响因素,以探究溜槽磨损的规律。研究结果表明,溜槽的主要磨损是冲击磨损区,磨料磨损区较轻,并且随着溜槽倾角增加,物料粒径、硬度增大,尖角边缘过多均增加其平均磨损深度。本研究为减少溜槽磨损方面的结构改进和正确使用提供一定的参考。     

Feasibility of Automated Monitoring of Lifting Equipment in Support of Project Control

One of the differences between industrial manufacturing or processing plants and construction sites is the temporary nature of the construction site, which has traditionally precluded installation of sophisticated production monitoring systems. Monitoring of production progress, cost, and quality is performed almost exclusively manually, with the result that it is expensive and approximate, and is commonly delivered with a time lag that does not allow for an effectively closed control loop. Automated monitoring of construction lifting equipment to provide useful feedback information for project management is a strong potential candidate; almost all components and materials must be transported by machines, and monitoring of machines is relatively straightforward. A system concept, employing a “black box” monitor and an electronic building information model, was developed. A field study was conducted to test the feasibility of the concept. The results indicate that the system is technically feasible, and offers the potential to deliver real-time, accurate project control information at very low cost.     

轧制力预测中RBF神经网络的组合应用

 传统的数学模型无法达到冷连轧控制的尺寸精度要求。针对传统轧制力模型的固有缺陷,为提高冷连轧机组轧制力计算精度,合理选择、更新和预处理训练样本,采用RBF神经网络预测冷轧带钢屈服应力并把它用于传统轧制力计算模型,获得较高的轧制力预测精度。而后使用RBF长期数据修正网络和RBF短期数据修正网络得到长期数据修正网络和短期数据修正网络的修正系数,对轧制力计算值进一步修正,从而进一步提高轧制力预报精度。上述方法直接用于某冷连轧机组,轧制力预测误差在±6%之内。这充分证明RBF网络可以成功用于轧制过程控制并满足实际生产的需要。     

热轧钢卷卷取后强制冷却工艺的研究

本文研究了热轧钢卷强制冷却方式,探讨了钢卷强制冷却工艺制度对带钢表面质量、机械性能等的影响,认为间断式强制冷却方式可取,对表面质量不带来有害影响,机械性能有一定上升,大大缩短了钢卷库存时间,为按周交货的生产方式提供了有利的条件.     

The relevance of Aristotle’s conception of eudaimonia for the psychological study of happiness.

According to the ethical system of eudaimonism, a philosophy that predates Aristotle, individuals have a responsibility to recognize and live in accordance with their daimon or "true self." The daimon refers to the potentialities of each person, the realization of which represents the greatest fulfillment in living of which each is capable. The daimon is an ideal in the sense of being an excellence, a perfection toward which one strives and, hence, it can give meaning and direction to one's life. Eudaimonia, then, is activity in accordance with one's daimon. This is what is considered worth having in life. Since Aristotle in the Nicomachean Ethics is concerned with the proper ends of human functioning, he rejects the view of eudaimonia as a subjective state equivalent to, or similar to, hedonic enjoyment. But if psychologists are to be able to make productive use of the Aristotle's conception of eudaimonia, it must be rendered in a form more congenial to the field. In pursuing this goal, I have found it necessary to take several significant departures from the Aristotelian perspective, while I have endeavored to remain true to Aristotle's ethical objectives. The most important of these departures is to consider eudaimonia to have a subjective component embodying the experiences that flow from efforts to live in truth to one's daimon by striving to develop one's aptitudes and talents for purposes deemed worth having in life. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

软锰矿与硫铁矿直接浸出法在湿法炼锌中的应用研究

介绍了广东岭南铅锌集团狮冶化厂湿法炼锌生产中,利用软锰矿与硫铁矿直接浸出以提高锌系统的锰离子含量的原理,实验和生产实践证明了此法工艺稳定,见效快,为湿法炼锌提锰的新措施。