上期所：铜铝期货保税交割业务试点启动

近日,上海期货交易所将以铜、铝为试点品种和上海洋山保税港区为试点区域,启动期货保税交割试点工作。开展保税交割后,保税货物利用保税仓库在完成进口报关前就可以进入交割环节,不必先行办理报关手续、缴纳进口关税和相关税费,且某一期货商品的实物交割可实行保税状态下或完税状态下的单一交割或混合交割。而在原“完税标准仓单”外新增的“保税交割仓单”,同样可用于实物交割、充抵保证金、提货,但鉴于试点中实际问题,     

济钢一炼铁厂万t料仓储运系统优化设计与改造

济钢一炼铁厂万t料仓已建成36a，虽经多次扩容及维护，但都不能彻底改变现状。根据济钢总厂区要形成570万t钢生产规模的规划恩路，万t料仓易地改造势在必行。在先进、实用、符合规程、规范的前提条件下，对料仓储运系统进行了优化设计、改造。     

上期所启动保税交割试点的意义分析

引入保税交割模式后,交易价格仍旧维持含税价格。保税交割业务开展以后,进口将更加便利,导致国内外市场价差缩小,进口成本将大大降低,而对出口几乎没有影响。增加保税交割仓库有利于期货交易卖方,因为期货市场上存在更多的买家,流动性更强,因此会有更多的替代交割品可以进入交易所进行交割,同时也能降低进口铜和铝的交割成本。     

ERP铸铁库存智能管理实践

以信息化建设为契机，对梅钢的铸铁库存管理流程再造整合，通过“ERP铁区”平台，集成了多牌号、多库位、多批次、周转快、出库与直装交叉、水运陆运交叉并行的铸铁库存管理技术，理顺了铸铁的物流信息关系，实现了铸铁生产、仓储、发运的集成优化管理，不仅保证了客户的质量需求和供货数量准确，而且提升了梅钢的管理效益。     

谈冶金企业备件仓储集中管理

介绍备件仓储存在的一些问题，实施备件仓储集中管理的必要性和优点，     

钢材配送中心及其成本数模探讨

介绍了国内钢材配送中心的发展情况,并对钢材配送中的仓储成本和配送成本进行了研究,分析了仓储和配送成本的影响因素,提出仓储配送综合成本的数学模型,并对成本的最优解进行了初步的探讨。     

钢成品仓储装卸自动控制系统

宝山钢铁股份有限公司钢成品仓储自动控制系统,采用激光三维扫描与定位、仓储货位优化模型、钢成品出库配载模型等技术,实现了钢成品仓储的自动装卸和货位智能管理。该系统有效提高了仓储装卸作业的自动化水平,实现了数字化和智能化的仓储管理,为冶金企业智慧制造打下基础。     

统一认识眼睛向内团结奋斗坚决打胜扭亏增盈保税攻坚战江西省冶金总公司总经理阎鑫元在总公司工作会议结束时的讲话（摘要）

统一认识眼睛向内团结奋斗坚决打胜扭亏增盈保税攻坚战江西省冶金总公司总经理阎鑫元在总公司工作会议结束时的讲话（摘要）同志们：目前，总公司上下正在奋力扭亏增盈，争取上半年亏损下半年补。在这样的形势下，我们召开了这次总公司工作会议。舒代省长、朱副省长亲临大...     

期货保税交割业务试点点评

开展期货保税交割业务将促进国内外市场的联动性,增加内外盘套利机会。笔者认为,作为政策趋势,该项业务可能短期内促使比价有下行的过程,投资者可考虑买国外抛国内的正向套利操作,并关注2011年3月后保税交割的实际情况。     

提高梅山仓储管理效率的探讨

仓储是现代物流的一个重要组成部分,在生产性企业中是相当重要的一个环节,其管理效率已越来越被企业所重视。在梅山仓储管理现状的基础上,提出了提高仓储管理效率的几种设想,旨在充分利用仓储资源,实现仓储效益最大化。     

循环流化床的燃烧数学模型

在循环流化床内物料浓度模型的基础上，重点进行了循环内煤的燃烧数学模型的研究，并借助模型考察了几个重要因素对循环床燃烧过程的影响。模型对煤在循环床的密相区和稀相区的燃烧过程采用了不同的处理方法。模型计算结果与实验结果基本吻合，证明了模型的可靠性。     

论企业仓库管理工作的重要意义

随着企业进一步的发展,许多传统意义上的仓库得到了逐步的改良。管理好物资仓库对企业财务和生产而言,其重要性是显而易见的。通过了解企业仓库管理的一些必备知识,加强对仓库的管理工作,对保证企业正常、有序的生产具有十分重要的意义。     

Correlation Between Potentiodynamic Polarization Behaviors of Transient Liquid Phase Bonded 2205 Duplex Stainless Steel and the Bonding Constituents

In order to precisely evaluate the contribution of each bonding constituent to the pitting corrosion resistance of transient liquid phase (TLP) bonded 2205 duplex stainless steel (DSS), we have undertaken potentiodynamic polarization (PDP) and microstructural analytic measurements all across the TLP bonded area. The PDP results show that the pitting corrosion resistance of TLP bonded specimens is significantly affected by the presence of certain bonding constituents across the TLP bonded area. Electron microscopy analysis indicates that the formation of complex (Fe,Ni,Cr,Mo)₃P phosphide in the bonding zone (BZ) before the completion of isothermal solidification (IS) as well as the formation of P-rich sigma phase in the diffusion-affected zone (DAZ) following the completion of the IS provides the most preferential sites for the occurrence of pitting corrosion. The PDP results also confirm that the pitting potentials (E_pit) of the TLP bonded specimen before and after IS completion are, respectively, closer to the E_pit of the BZ and the E_pit of the DAZ rather than to those of other TLP BZs.

     

Combustion and motion of coke and gases at blast-furnace tuyeres

The issues relating to coke circulation at the air tuyeres in high-productivity blast furnaces may be elucidated by systematic analysis of literature and production data and model experiments. Research on the forces associated with cavity formation and destruction in combustion ahead of the tuyeres indicates that three states are possible in the combustion zone: stability, instability, and collapse. In the stable state, when the uplift force of the gases from the cavity significantly exceeds the vertical pressure of the batch column, there will be no coke circulation. Coke circulation occurs in the unsteady state and at collapse. Rationalization of the terminology is proposed. In mechanical terms, it is expedient to divide the combustion zone into loose and dense sections, rather than into a circulation zone and a dense section.     

Post-combustion and heat transfer at blowing of oxygen into a carbon monoxide containing slag foam

A combined post-combustion model (CPM) for smelting reduction processes was developed in a multi-national research project supported by the European Coal and Steel Commission. The project partners were CSM, Rome, Hoogovens, Ijmuiden, MPI, Düsseldorf, and TUB, Berlin. This paper reports about a heat transfer model developed by TU Berlin within this project. The batch-type smelting reduction reactor has a two-layered slag: an upper foamy and a lower less foamy slag. A bubble stream of (CO+H₂) gas originating from the iron oxide reduction reaction with coal in the lower slag flows upwards. The rising (CO+H₂) gas is post-combusted by three oxygen jets blown horizontally into the upper part of the slag. A flame zone, and above the flame a mixing and a bubble zone form, in which post-combustion reaction and transfer of the post-combustion heat to the slag take place. The modelling of the flame zone was the subject of a previous paper. The present report describes models of the mixing and the bubble zone and of the occurrences in the gas space above the slag. The macro-kinetics of the overall heat transfer process including slag recirculation and heat transfer from the upper foamy to the lower dense slag are presented further. The model calculations provide information about the distribution of the post-combustion and the heat transfer processes over the single zones as functions of the important internal process parameters. Further, the oxygen utilisation, the heat efficiency and the temperatures at various locations of the process are described as functions of the ratio of post-combustion oxygen flow rate to (CO+H₂) evolution rate. In all the calculations a specific gas through-put of carbon monoxide of 3 mol/t?s is assumed. This value corresponds to 510 mol/s for the assumed melt of 170 t. The model shows that heat transfer efficiencies of more than 90 % and slag temperatures of less than 1700°C are possible, if the slag circulation rate is 300 kg/s. Lower circulation rates lead to higher slag temperatures and worse heat transfer efficiencies. Controlled slag circulation is thus an important process tool.     

Sintering behaviours of iron ore with flue gas circulation

Flue gas circulation is an important method for energy conservation and pollutant emission reduction in iron ore sintering. In this paper the effects of flue gas recirculation ratio on sintering of different iron ores including haematite, magnetite and limonite were studied by illustrating the variation of sinter bed temperature, atmosphere and mineralisation characteristics of different types of iron ores induced by the circulation. It shows that the proper flue gas circulation ratios for haematite, magnetite and limonite are 37, 30 and 25%, respectively. For magnetite ore, preheating and high consumption of oxygen in combustion zone caused more silicate minerals and less acicular calcium ferrite, thereby lowering sinter tumbler strength. As for haematite ore, the rapid change of temperatures of combustion, melting and solidification zones leads to elevated combustion efficiency and increased formation of acicular calcium ferrite, which enhances the sinter strength. When using limonite ore as the main raw material, high oxygen consumption, lower maximum temperature of sintering bed, higher cooling rate and larger porosity of sinter are observed.     

镍基高温合金HIP扩散连接的组织和性能

 采用热等静压扩散连接工艺,获得了DD402单晶合金与FGH95合金的扩散偶。研究了热等静压温度对扩散偶的持久性能、组织结构的影响。结果表明,不同温度热等静压的扩散偶均实现了冶金结合;结合界面区形成了一个组织过渡区,DD402单晶合金中的γ′ 相粒子在HIP过程中发生了筏形化;热处理后结合界面区的γ′ 相形貌和尺寸未发生明显变化。1166℃热等静压扩散偶的650℃持久性能偏低,断口在DD402单晶合金侧,断裂面从结合界面区的大尺寸γ′ 相起始,沿{111}滑移面向筏形γ′ 相区扩展。     

Ti微合金钢及其焊接粗晶区中的第二相粒子分析

利用萃取复型及金属薄膜电子显微技术对Ｔｉ微合金钢及其热影响区中的第二相粒子进行了分析,结果表明Ｔｉ微合金钢及其热影响区中的主要粒子为ＴｉＮ,此外还有少量ＡｌＮ等。经热循环后,粒子的尺寸明显增大、数量减少。与Ｔｉ、Ｎ含量比较高的钢相比,Ｔｉ／Ｎ较低的钢中ＴｉＮ粒子数量较多,尺寸较小,且热循环过程中ＴｉＮ粒子的溶解及粗化程度较小,对原始奥氏体晶粒长大的阻碍作用较大。     

Effect of reaction products on mechanical properties of diffusion bonded of titanium to 304 stainless steel with Cu interlayer joints

In present study, pure copper was used as an interlayer of the diffusion bonded joints between commercially pure titanium and 304 stainless steel. The process was carried out at 900°C for 30–150 minutes in steps of 30 minutes under 3MPa uniaxial load in vacuum. Microstructures of the bonded assemblies were observed in optical and scanning electron microscopes. The study exhibits the presence of different reaction layers in the diffusion zone and their chemical compositions were determined by energy dispersive spectroscopy. Formation of reaction products in diffusion interfaces were confirmed by xray diffraction technique. The maximum tensile strength of ∼322MPa (∼101% of Ti) and shear strength of ∼254MPa (∼86% of Ti) along with 8.4 % ductility were obtained for the couple bonded for 60 minutes and due to the rise in bonding time up to 90 minutes, bond strength drops marginally. With a further increase in joining time, the bond strength drops gradually due to the increase in the width of Fe-Ti base reaction products. Observation of fracture surfaces in SEM using EDS indicated that fracture takes place through the SS-Cu interface for all bonded samples.     

企业数据仓库化建设理论及实践

经过多年的计算机应用和市场积累，许多企业和机构已经建立了相对完善的OLTP（联机事物处理）系统。随着时间的推移，这些系统中积累了大量的历史数据，其中蕴含了许多重要的信息。通过对这些历史数据的分析和综合处理，可以找到那些对企业至关重要的业务信息，从而帮助有关主管和业务部门作出更加合理的决策。但是若干要提取有用的信息，需花费大量的人力和时间，而且传统的数据库概念、方法和技术已经难以解决现在的新问题。90年代出现的数据仓库及其相关技术正是为解决这样的问题而产生的。作者就企业如何构造数据仓库有其采用的策略作了全面的讨论，并结合宝钢的情况，对数据仓库对宝钢的应用作了全面的介绍。