试论钢铁企业工序标准成本管理

一、钢铁企业工序标准成本管理的内涵 工序标准成本管理是按生产工艺、分工序制定工序定额指标,核定工序标准成本,按工序标准成本实施成本控制,分析产生偏差原因,提出改进措施,并用以指导选择工艺路线、优化资源配置、改善品种结构、细化成本预算、明晰成本责任、强化成本考核,实现公司整体效益最大化的一种成本经营管理活动。     

鞍钢工序增殖比率测算的探讨

根据鞍钢目前的工艺条件及财务核算制度,对鞍钢的工序产品价格、工序价格增殖、工序产值增殖等测算的方法进行了探讨,计算出鞍钢各工序的增殖比率.     

电解着色工艺产品色差产生原因及质量控制

主要从影响电解着色产品色差的主要工序:上料工序、阳极氧化工序、电解着色工序对产品色差的产生原因作了细致分析,并提出了相应的改善方法。     

马钢高炉炼铁工序能耗预测模型

根据马钢高炉炼铁工序的生产数据,分析了影响马钢高炉炼铁工序能耗的相关工艺参数,并找出了影响炼铁工序能耗的关键性因素.通过分析影响炼铁工序能耗的各关键因素的相关关系及对能耗的影响规律,应用SPSS软件建立了炼铁工序能耗预测模型.另外,分析了影响焦比和喷煤比的主要因素并建立了相应的预测模型.炼铁工序能耗预测模型的可靠性高,...     

蒸氨工序的开工和调试

介绍了南昌铁钢有限责任公司焦化厂蒸氨工序的工艺及工艺特点,开工前应具备的条件和准备工作,以及蒸氨工序的开工蒸氨工序后对其它工序的影响及调试.     

不同工艺生产带肋钢筋力学性能工序能力对比

对两种不同工艺生产的 2 0MnSi热轧带肋钢筋力学性能工序能力进行对比 ,分析表明 ,六轧厂由于轧制工序条件变化 ,造成力学性能σs、σb 工序能力偏高 ;δ5工序能力偏低 ,出现严重失衡 ,提出从调整钢的化学成分控制范围解决力学性能综合工序能力失衡的途径 .     

钢铁生产流程铁素流网络建模与仿真

针对钢铁生产流程的铁素流网络,采用系统动力学方法构建了全流程铁素流运行的动态模型。仿真了首秦、鞍钢老区和鞍钢西区3个实际钢铁生产流程从原料加入设备到产品稳定输出阶段的产品铁素流、损失铁素流和铁素存量的动态特性。结果表明:首秦流程的烧结工序、炼铁工序和炼钢工序紧凑性较好,烧结工序和轧钢工序的铁资源利用率有较大提高空间,同时需要提高轧钢工序的技术水平和生产能力;鞍钢老区的炼铁工序和轧钢工序铁资源利用率较好,需要提高炼钢工序的铁资源利用率;鞍钢西区的炼钢工序铁资源利用率较好。     

硫化锑金精矿冶炼工艺优化及生产实践

湖南辰州矿业有限责任公司冶炼厂根据生产实践,对制粒工序、鼓风炉工序、灰吹炉工序、纯炉工序、炼金炉工序及湿法提金工序等进行了优化,取得了良好生产效果,提高了金、锑回收率,金、锑回收率分别达到96.81%、96.33%。通过对其优化措施及效果进行总结和分析,为该冶炼厂进一步提高金、锑回收率提供技术支撑,也为同类型冶炼企业工艺优化提供参考。     

炼钢系统工序能耗的影响因素分析

根据历年全国重点钢铁企业和首钢转炉工序能耗变化,简述中国钢铁企业转炉炼钢节能技术进步和首钢转炉负能炼钢的情况。通过首钢北京、首秦和迁钢三地钢厂钢产量、炼钢工序能耗、转炉工序能耗及连铸工序能耗变化,阐述钢产量与不同工序能耗之间的关系。重点分析新旧折标系数、转炉煤气回收量等因素对转炉、炼钢工序能耗的影响。在对比分析国内先进转炉煤气回收量的基础上,指出转炉、炼钢工序的节能潜力,并提出基本对策和建议。     

省内冶金节能信息

我省2座加热炉3个轧钢工序获冶金部1986年特等炉特等工序称号 据冶金部关于1986年初轧和轧钢工序能耗及等级情况通报: 南昌钢铁厂热带烧油加热炉,新余钢铁厂中板烧气加热炉,获特等炉称号。可比单耗分别为1.393,1.978J/t。南昌钢铁厂热带工序和焊管工序,江西钢厂76无逢管工序,获特等工序称号,可比能耗分别为72.4,28.6,329.5kg标煤/t。     

Slab-on-Grade versus Framed Slab

This paper presents comprehensive and practical engineering review (not mathematics or computer science paper) of the observed behavior of the two types of slabs that have been used for the bottom floor slabs, at grade and underground, of buildings in the United States and overseas. The typical design of the slab-on-grade (SOG) built in the United States is described. The design requires only nominal reinforcing steel, but modern day design also requires ground preparation and improvement as necessary, including underslab perforated drainage pipe network embedded in the granular subbase, riser pipes, and a series of pumps. Sealing at all slab isolation joints and waterproofing membrane or water barrier system are provided for water tightness. The framed slab is supported directly on the building framing and on the building foundation. The design can accommodate the soil and underground water pressure and in itself is watertight as the slab is cast monolithically with the structural walls and footings. The behavior of the SOG depends so much on the behavior (soil properties) of the soil strata on which the slab is resting on. It is sensitive to the variation of the soil conditions at and around building foundations, leading to uneven bumpy and cracked slab and leaking basement. These were demonstrated in the report of short- and long-term performances of various projects in Thailand and United States in the past 25 years. The paper refers to various analysis and design techniques that may be used to improve the design of both the SOG and the framed slab for serviceability and economy. It is concluded that both types of slabs may be selected to suit the functions and serviceability requirements of the buildings. The SOG requires less concrete and reinforcement than those for the framed slab counterpart, but when all other factors are considered including additional underslab drainage and pump system, operating, and long-term performance and maintenance, the overall costs of both slabs may not be far apart, yet the performance and integrity of the framed slab will certainly be superior.     

Analysis of Arch Dams Using Coupled Trial Load and Block Element Methods

This paper presents the use of the trial load method and the block element method with elastoviscoplastic discontinuities for analysis of arch dams. The arch dam is considered as an arch-cantilever system and the foundation as a block element system. With the displacement compatibility condition at the contact surface of the dam and the foundation (including abutment), the governing equations of the arch dam and foundation are established. These methods are used for the analysis of the double curvature arch dam with complex geology conditions of the Xiaowan Hydroelectric Project in China. The deformation and stress states in both the dam body and the foundation are determined. Furthermore, the stability safety factors of the foundation and the abutment are calculated at the same time, which allows for an optimal design of the arch dam considering the strength, the deformation and the stability of the dam and foundation.     

火炮身管用钢现状及发展趋势

火炮身管用钢决定了身管类武器的使用性能,影响火炮的作战持续性与机动性。通过对国内外火炮身管用钢合金成分体系、制造工艺流程、材料主要性能指标总结分析,指出当前国内外炮钢主要牌号、性能水平以及存在高温性能不足的问题。通过调研国内外火炮用钢最新研究成果以及身管武器整体技术需求,总结和展望了火炮身管用钢的研究现状和发展趋势,针对大口径火炮研制高强韧炮钢以减轻壁厚和质量,针对中小口径速射火炮研制耐烧蚀性能炮钢以提高使用寿命。     

From the editors.

Introduces the articles appearing in this issue of Psychology of Aesthetics, Creativity, and the Arts. Of particular interest in this issue are the breadth and the rigor of the methodology that underlie the substantive and theoretical issues addressed in the work. The issue begins with an article from Dean Keith Simonton, who looks at the idea of what success in film is and how different indicators of success (critical, box office, etc.) are related to one another over the life of a film. Paul Silvia, James C. Kaufman, and Jean Pretz then address the question of the domain specificity of creativity. The third article shifts to the field of music and looks at the relationship between personality characteristics and how people use music in their lives. The next article reports the results of an experimental design that looked at recognition of objects in cubist paintings and pupil dilation after having made a classification of an object. The next article looks at differences in the motivations and personality characteristics of individuals who visit modern art museums versus ancient art museums. Next, Patricia Stokes uses the problem-solving approaches of Reitman and Simon in a case study examining the sculpture of Richard Serra. The issue concludes with an analysis of the idea of “lived experience” as it relates to the psychology of aesthetics and art making. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

玲珑金矿微震监测台网布设优化

微震监测系统的方案优选涉及多个指标,为简化方案优选流程,利用主成分分析法（PCA）构建了微震监测台网综合优化分析模型。首先,基于玲珑金矿大开头矿段微震监测系统构建和运行阶段矿山的实际情况,从经济和技术条件2个方面选取了8个指标构建了综合评价指标体系。在进行模型解算后,用2个新的综合指标（主成分）替代了原始的8个指标,这2个指标包含了原始数据91.9%的信息量。最后以信息贡献率作为新的综合指标的权重系数,计算各方案的综合评价值,优选出方案Ⅲ综合性能最好。     

RC Slabs Strengthened with Prestressed and Gradually Anchored CFRP Strips under Monotonic and Cyclic Loading

This paper presents the test results of reinforced concrete slabs strengthened with prestressed and gradually anchored carbon fiber–reinforced polymer (CFRP) strips under monotonic and cyclic loading. To take full advantage of the externally bonded CFRP technique, it is beneficial to apply the laminates in a prestressed state, which relieves the stress in the steel reinforcement and reduces crack widths and deflection. The aim of the monotonic tests was to determine the strengthening efficiency of the new prestressing technique and to investigate serviceability and ultimate states. The cyclic tests were performed to identify the fatigue behavior of the strengthened slabs and to investigate the influence of long-term cyclic loading and elevated temperature on the bond properties of the prestressed CFRP laminates and the ductility and flexural strength of the strengthened slabs. A nonlinear analytical model of reinforced concrete members strengthened with passive and prestressed CFRP strips under static loading is proposed in the paper. A comparison of the experimental and predicted results reveals an excellent agreement in the full range of loading.     

干湿循环和含水率对尾砂压缩固结特性的影响研究

为辅助计算尾矿存积的沉降距离,指导放矿、尾矿子坝堆筑,提高尾矿坝的经济效益.研究干湿循环作用和含水率对湖南某金属尾矿库尾砂的压缩固结特性的影响.对含水率为10％、12％、14％、16％和18％的尾砂分别进行0～5次脱湿—吸湿—再脱湿试验,借助GZQ-1型全自动高压固结仪对试样开展了快速固结试验.研究结果表明:(1)相同...     

Free Out-of-Plane Vibrations of Masonry Walls Strengthened with Composite Materials

The natural frequencies and the out-of-plane vibration modes of one-way masonry walls strengthened with composite materials are studied. Due to the inherent nonlinear behavior of the masonry wall, the dynamic characteristics depend on the level of out-of-plane load (mechanical load or forced out-of-plane deflections) and the resulting cracking, nonlinear behavior of the mortar material, and debonding of the composite system. In order to account for the nonlinearity and the accumulation of damage, a general nonlinear dynamic model of the strengthened wall is developed. The model is mathematically decomposed into a nonlinear static analysis phase, in which the static response and the corresponding residual mechanical properties are determined, and a free vibration analysis phase, in which the dynamic characteristics are determined. The governing nonlinear differential equations of the first phase, the linear differential eigenvalue problem corresponding to the second phase, and the solution strategies are derived. Two numerical examples that examine the capabilities of the model and study the dynamic properties of the strengthened wall are presented. The model is supported and verified through comparison with a step-by-step time integration analysis, and comparison with experimental results of a full-scale strengthened wall under impulse loading. The results show that the strengthening system significantly affects the natural frequencies of the wall, modifies its modes of vibration, and restrains the deterioration of the dynamic properties with the increase of load. The quantification of these effects contributes to the understanding of the performance of damaged strengthened walls under dynamic and seismic loads.     

应力—渗流耦合作用下损伤岩石渗流特性

地下矿产资源开采过程中,频繁的应力扰动会对深部硬岩造成一定的损伤。硬岩内部孔隙和裂隙在高地应力和高渗透压的状态下迅速扩展贯通,严重威胁岩体工程的安全和稳定性。针对损伤花岗岩开展了一系列应力—渗流耦合试验,结合CT扫描,考虑渗透压、围压和损伤程度等因素的影响,综合分析了损伤岩石在应力—渗流耦合作用下的力学和渗流特性。试验结果表明：随着损伤程度的增加,岩样孔隙及裂隙体积呈现出从平缓增加、稳步增加到急剧增加的变化趋势;在围压相同的情况下,岩样的峰值强度随着渗透压的增加呈线性减小,渗透压对损伤花岗岩的强度具有明显的弱化效应,且弱化程度与围压无关;损伤程度越大,裂隙发育程度越高,渗透率越大,同时,孔隙及裂隙的发育程度可用于表征渗透率的大小。     

Psychologie sociale des médias.

Reviews the book, Psychologie sociale des medias edited by Pascal Marchand (2004). This work consists of two parts, each one having distinct characteristics. The first part presents a summary of traditional and recent research in psychology, which is devoted to various questions concerning the influence of the media. Specifically it covers effects of the television and the representations of violence and sexuality. This part will be of most interest to those concerned with social psychology or of psychology of the media. The second part has as a discussion thread a socio-cognitive orientation and comprises seven chapters which treat more precise questions relating to the psychological aspects of the media and their influence. The various chapters present either mainly theoretical contents, focusing on speech and rhetoric, but in some chapters there is a combination of theoretical discussions and empirical data. The second part is specialized, but also, more "European" in regards to its content. The two parts of the work are distinct. While the first part relates to mainly the effects of the entertainment and the accounts, the second part relates almost exclusively to the media of information, journalism and the great stakes related on the communication and persuasion in the political life and publicity. Although the two parts of the work are different in structure and their content, they adopt both a socio-cognitive prospect essential for theory and research in psychology for the media. Overall, this work is an interesting addition to the fields of social psychology and social cognition. (PsycINFO Database Record (c) 2010 APA, all rights reserved)