降低高炉煤气温度的建议与措施

分析了高炉煤气温度高的原因及对用户的影响，并对降低高炉煤气温度提出了建议，探讨了一些解决措施在实践中的应用，并取得了一定效果。     

微合金化钢板断口分层开裂原因分析

针对微合金化钢板断口分层的问题，以高强船板钢A36为研究对象，对炼钢-精炼-连铸-加热-轧制工艺进行了全面跟踪调查。使用金相显微镜、扫描电镜及能谱分析等设备研究了断口分层的原因。认为带状组织对船板钢的分层有较大影响，带状组织越严重，船板钢拉伸时分层越严重；夹杂物也是导致船板钢分层的原因之一，夹杂物仅为氧化物时断口正常，夹杂物为铝酸盐的复合夹杂物时，断口容易分层；带状组织的出现与化学成分偏析有关。通过降低Mn和S含量，提高合金含量，延长均热时间，控轧控冷等措施，船钢板的分层缺陷率由2020年的5.82%降低至2021年的0.56%,解决了船板钢分层缺陷问题。     

宝钢地区智能卡煤气表的开发与应用

主要叙述智能卡煤气表在宝钢地区推广和应用的情况。智能止煤气表具有安全可靠、保密性强、使用方便等优点。同时，实现了抄表不进屋，提高了劳动生产率，解决了一些用户拖欠敢费的现象。针对在试用过程中出现的一些问题，对智能卡煤气表提出了改进建议。     

用碳热法分层加料熔炼稀土硅铁镁合金

介绍了稀土硅铁镁合金的冶炼原理和分层加料冶炼工艺及原料配比情况，指出了冶炼操作对合金产生的影响，并提出了现工艺中存在的一些问题。     

沿走向分条小进路采矿法在黑岚沟金矿的应用

对上向水平分层尾砂充填采矿法进行变形，从而解决了黑岚沟金矿区的中厚且不稳固矿体回采难题，并对该矿体采用沿矿体走向分条小进路采矿法进行了试验，通过几年的应用及实践取得了较好的经济效益。     

AlSn20Cu/Steel双金属板(带)复合轧制过程的厚度匹配

通过对AlSn20Cu/Steel双金属板(带)复合轧制过程变形区变形规律的分析，确定了轧制过程的总变形率与各分层变形率的关系，解决了实际生产中各分层原料的厚度匹配问题。     

FoxBASE与Borland C＋＋接口技术浅谈

在现代计算机管理中，大都使用ＦｏｘＢＡＳＥ＋来实现用户需求，但有许多问题它本身无法解决。如屏幕保存、恢复等，为使其更为完善，在Ｃ＋＋中发现了具有强大功能的库函数，通过研究，找到了两者之间的接口和联系。通过结合，一些原本无法解决的问题迎刃而解。     

济钢船板分层缺陷形成机制分析

济钢A32高强船板拉伸试验后试样出现断口分层现象。利用金相显微镜、扫描电镜和能谱仪，对分层缺陷严重的部位进行了观察、检测和分析。结果表明：分层缺陷主要与铸坯偏析处的铌、钛碳化物和硫化物夹杂、带状组织有关。通过对炼钢和轧钢生产过程的观察，提出了改进冶炼和轧制工艺等相关措施，提出解决该问题的具体工艺措施并应用于实际生产。     

铁道车辆用09CuPTiRE耐候钢板分层的分析

09ＣｕＰＴｉＲＥ耐候钢主要用于制造各种铁道车辆 ,其耐大气腐蚀能力比普通碳素结构钢和普通低合金钢高出 2～ 3倍。本溪钢铁公司采用转炉—精炼—连铸—热连轧工艺生产 0 9ＣｕＰＴｉＲＥ耐候钢 ,通过合理的成分设计及控制轧制 ,解决了磷的合金化 ,钙处理 ,连铸结晶器喂丝等工艺问题 ,从而改善了铸坯的表面质量。近一时期 ,用户冲压 0 9ＣｕＰＴｉＲＥ耐候钢时 ,钢板在板厚 1 2处出现了不同程度的分层缺陷 ,为找出产生分层的原因 ,便于进一步改进工艺 ,降低成本 ,对此进行了以下实验分析。1　试验方法在分层处截取试料 ,并磨制成金相试样…     

机检数据库及其检索效果初探

简要介绍《中文科技期刊篇名数据库》、《中国专利文摘》光盘数据库，《ＷＰＩ》及《ＭＥＴＡＤＥＸ》联机数据库，并对存在于用户和检索员间的一些影响检索质量的问题进行了探讨，认为成功的检索需由用户和检索员共同努力才能达到。     

Physically Based Model for Simulating Flow in Furrow Irrigation. I: Model Development

Researchers developed several mathematical models for simulating furrow irrigation using the Saint-Venant equations. Most of these irrigation models use numerical techniques to solve these equations, which in general, require extensive programming and computational skills. Moreover, several of these models consider uniform soil and use empirical equations for modeling infiltration. In this article, a physically based furrow irrigation model was presented for simulating flow in irrigated furrows under both uniform and layered soils. The model consisted of an overland flow and an infiltration module that are modeled using analytical solution of the zero-inertia and the Green and Ampt [one-dimensional and two-dimensional infiltration equations) equations, respectively. Furthermore, the infiltration was also modeled using the Kostiakov-Lewis infiltration equation. The model considered all possible furrow shapes and included graphical user interface. The developed model was evaluated using the field data and the model performance was discussed in the second part of the article.     

低碳贝氏体高强钢探伤不合原因分析

通过金相、原位分析、扫描电镜、能谱等分析测试手段对低碳贝氏体（LCB）高强钢在探伤（NDT）中出现的分层进行了分析。研究结果表明：引起分层的主要因素是MnS夹杂,C偏析导致的心部异常组织和Nb、Ti的碳化物夹杂也加剧了分层倾向。通过系列的工艺整改措施,钢板分层情况大大降低,探伤合格率提高30％以上。     

层布式钢纤维混凝土在旧路面补强中的应用

介绍层布式钢纤维混凝土的路用性能，结合井冈山市城区路网改造工程的设计、施工情况，阐述了层布式钢纤维混凝土在旧路面改造中的应用。     

锂离子动力电池正极材料层状LiMnO2的研究进展

介绍了锂离子动力电池正极材料锂锰氧化物中尖晶石型LiMn2O4、层状o-LiMnO2、m-LiMnO2和r-LiMnO2的晶体结构及电化学性能,阐述了制备层状LiMnO2的几种方法,重点讨论了近年来对层状LiMnO2进行的掺杂改性研究。探索掺杂不同离子对层状LiMnO2进行改性是提高其电化学性能的研究发展趋势。     

Investigation on the Hydroforming Characteristics of Double‐layered Tubes

Double‐layered tubes consist of an inner tube and an outer tube. Both are similar in material, contact closely and deform simultaneously when subjected to external force. Hydroforming assembly technology has several advantages in the manufacturing of double‐layered tubes. In this study, the hydroforming characteristics of double‐layered tube are investigated. Free bulging tests are performed to produce formability diagrams of double‐layered tubes at various forming pressures and feeding amounts. In addition, the hexagonal‐shape hydroforming test is performed to estimate the dimensional accuracy of double‐layered tubes through the corner filling ratio and the gap between the inner and outer tubes. Besides experimental analyses, an analytical model that can predict internal pressure for the hydroforming of double‐layered tubes is proposed and experimentally validated in this study.     

Investigation of Foundation Vibrations Resting on a Layered Soil System

This paper presents an investigation of the dynamic response of foundations resting on a layered soil underlain by a rigid layer. Model block vibration test results are used for the investigation. For the analysis, two different methods, namely, the equivalent spring-mass-dashpot model and the cone model, are used. A simple method to estimate the equivalent stiffness of the foundations resting on any multilayered soil system is presented. Obtaining stiffness from the proposed method and using different values of the damping factor ranging between 1.5 and 10.0%, the dynamic response of a foundation resting on a layered soil system is computed. One-dimensional wave propagation in an elastic cone for the analysis of foundations resting on the elastic homogeneous half-space or layered soil is also used to compute dynamic responses of the foundations resting on different layered soil. Finally, results obtained from two analytical methods are compared with the test results. It has been observed from the comparison that the results obtained by the equivalent spring-mass-dashpot model with a damping factor of 1.5% matched well with the experimental results for all cases. Results obtained by the cone model match well with experimental results for the cases where the top layer is softer than the bottom layer.     

强力二次风与分层给煤装置在链式炉排锅炉上的应用

本文通过对金昌冶炼厂在ＦＨＬ６．５－１３型锅炉上分别安装强力蒸汽二次风和分层给煤节能装置的使用效果,分析了强力蒸汽二次风与分层给煤节能装置的使用环境,最后提出了在生产中需要改进此装置的一些建议。     

A theoretical analysis for the formation of periodic layered structure in ternary diffusion couples involving a displacement type of reactions

Periodic layered structures were found to form in numerous ternary diffusion couples of the type B_δ′C/A involving a displacement type of reactions. In all of these couples, A is a dominant diffusing species within the diffusion zone and C is essentially immobile. Occurrence of this type of layered structure was rationalized in terms of thermodynamic arguments. Moreover, a diffusion model was formulated to describe the growth of this structure. An appropriate solution to the diffusion equations was obtained when simplified assumptions were made. The relative stability of a periodic layered structure versus that of a simple layered structure is governed by the relative mobilities of A and B within the diffusion zone. The simple layered structure is formed when B has a high mobility relative to that of A. On the other hand, with increasing mobility of A, the periodic layered structure tends to be stable.     

取向硅钢氧化膜结构对渗氮层深度的影响

摘要：低温板坯加热技术生产取向硅钢,其关键点之一在于脱碳退火后要进行渗氮处理。通过控制脱碳气氛,获得不同的氧化膜结构;并进一步分析在近似渗氮量条件下,氧化膜结构对渗氮层深度的影响。结果表明：氧化膜分为外层颗粒状氧化膜和内层层片状氧化膜两部分。随着脱碳气氛露点增加,脱碳板O含量增加,氧化膜厚度增厚、层片状氧化膜占氧化膜总厚度的比例下降,渗氮层深度增加。当层片状氧化膜厚度占比较高时,［N］原子积聚在试样的极表层,形成氮沿厚度方向的单峰分布,渗层较浅。当层片状氧化膜厚度占比较低时,［N］原子会越过该层,而在次表层再次发生积聚;从而除了极表层的氮峰外,在次表层形成一个或多个氮峰,渗层较深。     

Effect of oxide film structure of grain oriented silicon steel on depth of nitriding layer

Nitriding treatment after decarburization annealing is one of the key technologies to produce low temperature high permeability silicon steel. By controlling decarburization atmosphere, different oxide film structures were obtained; and then, the effect of oxide film structure on depth of nitriding layer with approximate nitrogen content was studied. The results show that oxide film is divided into two parts: the outer granular oxide film and the inner layered oxide film. As the dew point of decarburization atmosphere increases, the oxygen content of the decarburization plate increases, the thickness of the oxide film increases, the thickness ratio of layered oxide decreases, and the depth of nitriding layer increases. When the thickness ratio of layered oxide film is relatively high, ［N］ accumulates on the extreme surface of the sample, forms a unimodal distribution of ［N］ along the thickness direction, and the nitriding layer is relatively thin. When the layered oxide film ratio is relatively low, ［N］ crosses this layer and accumulates again in the subsurface; thus, in addition to the ［N］ peak on the extreme surface, one or more ［N］ peaks form in the subsurface, and the nitriding layer is relatively thick.