竖式双侧吹熔池熔炼技术

本文总结金峰炉五年来运行情况,介绍该炉技术优势,运行参数,渣型选择进展,将金峰炉与底吹炉及奥斯迈特工艺进行了对比。其具有炉料适应性强、工艺过程及设备简单、作业率高、直收率高、熔炼效率高、炉子寿命长、投资省、能耗低、环保好等优点。     

竖式双侧吹熔池熔炼技术

本文总结金峰炉五年来运行情况，介绍该炉技术优势，运行参数，渣型选择进展，将金峰炉与底吹炉及奥斯迈特工艺进行了对比。其具有炉料适应性强、工艺过程及设备简单、作业率高、直收率高、熔炼效率高、炉子寿命长、投资省、能耗低、环保好等优点。     

密闭式连续退火炉在冷轧-连退机组中应用及故障缺陷分析

本文介绍了行业内带钢退火工艺常用方式,阐述了分段密闭式连续退火炉在冷轧1550 mm连退机组中的应用及设备概况,结合冷轧-连退生产工艺和炉区设备特点分析了连退炉区故障缺陷原因并给出解决措施,消除了连退炉内跑偏、加热性能不合、氧化色等故障缺陷,改善了冷轧带钢物理性能和表面质量,保证了生产的连续高效运行。     

发明专利8则

<正> 复合衬炉电渣重熔工艺及设备 一种复合衬炉电渣重熔工艺及设备,博采水冷电渣重熔炉和有衬电渣炉 之长处,集二者的优势为一身。它把炉体分为有衬和水冷的上下二段式的复合内衬节能型结晶器,使渣池始终处在上段的有衬炉体内,以减少渣池侧面的热损失,同时也加剧渣池的冶金反应,以获得高质量钢水。而金属液面控制在     

辉光离子氮化炉的改造

辉光离子氮化是机械加工行业对加工工件进行热处理的重要手段,氮化炉设备运行的好坏,直接影响到工件的热处理质量。介绍了辉光离子氮化炉的工作原理、改造方案及效果等。通过改造,该热处理炉的供电质量稳定,灭弧动作可靠,打弧时间缩短,氮化时间减少,工件氮化质量提高。     

电炉炼钢/铸钢流程LF炉与VD炉及其工艺布置

电炉炼钢/铸钢流程设备的工艺布置,对工艺操作、生产节奏、产品质量及生产率高低,以及连铸的多炉连浇及大铸件的多炉合浇等影响很大。本文介绍了几种钢包精炼炉,分析它们工艺布置特点,与车载真空罐式的LFV法相比,采取LF炉与VD炉各自独立设置、离线布置方式,具有技术先进,工艺灵活,有利于连铸的多炉连浇及大铸件/大钢锭的多炉合浇,以及降低投资成本等优点。     

第十五届中国国际工业炉及热处理技术展览会

正各种工业炉、真空炉、气氛炉、炉窑、坩埚、热处理设备、感应加热设备、装置及热处理技术工艺等通用热工产品及金属表面处理、热加工等各类电热合金和加热元件、远红外加热技术及设备,热载体加热设计及设备等炉用配套产品、筑炉材料,耐火材料,陶瓷、电气控制等相关贸易、咨询、信息、媒体、服务     

节能型热轧无缝钢管燃气调质炉

涉及一种可实现无缝钢管淬火、回火工艺的燃气调质炉设备,包括窑体和辊道传动部分。其特征在于:窑体前端设置自动进料装置,窑体两侧安装辊道传动装置、温控装置,窑体外安装电气控制装置。该燃气调质炉采用燃气加热,减少了     

邯钢连退线薄板宽规格深冲钢炉内褶皱问题分析

邯钢连退线在生产深冲钢,尤其是生产宽规格薄板深冲钢过程中,频繁出现炉内板带褶皱现象,严重的导致炉内发生断带事故,严重影响生产线的稳定运行和产品成材率。为减少邯钢连退线生产薄板宽规格深冲钢炉内褶皱,提高邯钢连退线运行的稳定性,提高产品成材率,本文从深冲钢的化学成分出发,研究了退火工艺以及炉内张力对薄板宽规格深冲钢生产的影响,解决了连退线薄板宽规格深冲钢炉内褶皱问题。     

浅谈50m~2鲁奇式沸腾炉系统的生产实践

昆明云冶锌业股份有限公司50m2鲁奇式沸腾炉系统建成投产以来系统运行周期短,床能率低,SO2浓度偏低。通过分析影响生产的各种因素,从工艺、设备上提出了改进措施。     

新型的治疗阿尔茨海默氏症药物(1-二甲基磷酰基-2,2,2-三氯)-乙基-1-醇烟酸醋对体外神经细胞的作用

目的: 观察本实验室合成的一种治疗阿尔茨海默氏症(AD)的药物(1-二甲基磷酰基-2, 2, 2 -三氯)-乙基^-1-醇烟酸醋(NMF),对体外培养的皮层神经细胞活性的影响以及对海人藻酸(KA)所致的神经损伤的保护作用。方法: 采用体外培养皮层神经元的方法,解剖分离 15 d胚胎小鼠皮层神经细胞, 接种于 96孔板,48 h 后加药并培养 72 h,以 MIT 法 观察 NMF 对小鼠皮层神经细胞活性的影响;同时将接种于 24 孔板的细胞预先给予 NMF,d 3 时加或不加KA处理后,以台盼蓝染色鉴别并计数死、活细胞,可得出细胞的存活率。结果: NMF 明显促进胎鼠皮层神经元活性,其中 NMF1、0. 1、10nmol·L^-1促进神经元活性增殖率分别高达 34.7%、37.4%、36. 7%, NMF 明显促进正常胎鼠皮层神经元存活卒,与对照组比较,10nmol·L^-1 NMF 对皮层神经元的存活率分别提高 39.3%、73.5%。 NMF能显著 对抗 KA 所致的神经元损伤,与 KA 损伤组相比, NMF0.1、10、10nmol·L^-1对损伤皮层神经元的保护率分别为 77.30%、80.10%、84.15%。结论: NMF 明 显促进胎鼠皮层神经元的洁性、提高正常皮层神经元,的存活卒,并能有效地保护KA所致的神经元损伤,提示 NMF 是一种很有潜力的治疗 AD 的药物。     

Three-Dimensional Growth of Coherent Ferrite in Austenite: A Molecular Dynamics Study

Coherent second phase often exhibits anisotropic morphology with specifi c orientations with respect to both the second and the matrix phases. As a key feature of microstructure, the morphology of the coherent particles is essential for understanding the second-phase strengthening eff ect in various industrial alloys. This letter reports anisotropic growth of coherent ferrite from austenite matrix in pure iron based on molecular dynamics simulation. We found that the ferrite grain tends to grow into an elongated plate-like shape, independent of its initial confi guration. The fi nal shape of the ferrite is closely related to the misfi t between the two phases, with the longest direction and the broad facet of the plate being, respectively, consistent with the best matching direction and the best matching plane calculated via the Burgers vector content(BVC) method. The strain energy calculation in the framework of Eshelby's inclusion theory verifi es that the simulated orientation of the coherent ferrite is energetically favorable. It is anticipated that the BVC method will be applicable in analysis of anisotropic growth and morphology of coherent second phase in other phase transformation systems.     

Effect of Short-Time Aging on the Pitting Corrosion Behavior of a Novel Lean Duplex Stainless Steel 2002

The effect of short-time aging in the temperature range between 400 and 1000 °C on the pitting corrosion behavior and mechanical property of a novel lean duplex stainless steel(LDSS) 2002 was investigated through the potentiostatic critical pitting temperature(CPT) tests and the Charpy impact tests. Both the pitting corrosion resistance and the toughness of aged specimens degraded due to the precipitation of detrimental secondary phases and the most significant reduction of CPT and impact energy emerged at 650 °C concurrently. The CPT of LDSS 2002 specimen aged at 650 °C decreased by 28 °C, and the impact energy dropped from 69 to 29 J/cm~2 compared with the solution-annealed sample. Transmission electron microscopy characterization showed that the main precipitates in LDSS 2002 were Cr_2N and M_(23)C_6 along the ferrite–austenite grain boundaries.     

Information for Contributors

正The Transactions of Nonferrous Metals Society of China,founded in 1991 and sponsored by The Nonferrous Metals Society of China,is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology,including mineral processing,extraction metallurgy,metallic materials and heat treatments,metal working,physical metallurgy,powder metallurgy,with the emphasis     

Preface

<正>We are pleased to present this Special Issue of Transactions of Nonferrous Metals Society of China containing selected papers from the First Asian Conference on Aluminum Alloys(ACAA-2013),held in Beijing,China,13–17 October 2013.This conference has been initiated,with approval of     

Information for Contributors

The Transactions of Nonferrous Metals Society of China, founded in 1991 and sponsored by The Nonferrous Metals Society of China, is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology, including mineral processing, extraction metallurgy, metallic materials and heat treatments, metal working, physical metallurgy, powder metallurgy, with the emphasis on fundamental science. It is the unique preeminent publication in English for scientists, engineers, under/post-graduates on the field of nonferrous metals industry. This journal is covered by many famous abstract/index systems and databases such as SCI Expanded, Ei Compendex Plus, 1NSPEC, CA, METADEX, AJ and JICST.     

INTRODUCTION TO PATENTS

The invention provides a method of making a mold which can reduce SOx generation rate while preventing decrease in hardening rate in the case of using sulfuric acid for a hardener composition. The method has a mixture step in which fire-resistant particles, a hardener composition and a binder composition are mixed to obtain a composition for a mold. The hardener composition contains sulfuric acid. In the mixture step, sodium carbonate is added. A molar ratio of the sulfuric acid to the sodium carbonate is 0.5 or more and 4.0 or less.     

China Foundry Week 2014

China Foundry Week, hosted by the Foundry Institution of Chinese Mechanical Engineering Society （FICMES） each year, is a large academic event in China. It is one of the ten high-impact activities sponsored by the Chinese Mechanical Engineering Society.     

17th Conference of Hydrodynamic and Electromechanical Control Engineering Call for papers

正1.Contents In order to promote the academic exchanges and technical communication of the research in the field of fluid power transmission and control,fluid control engineering specialized committee of the Chinese Society of Theoretical and Applied Mechanics will hold the 17th Conference of Hydrodynamic and Electromechanical Control Engineering on July 27-29,2014 in Tibet,Lhasa city.     

Formulas of Tension of Continuous Rolling Process

The development of computer controlled continuous rolling process calls for a mathematical expression that can express the inequality condition of "constant flow". Tension is the link of the continuous rolling process. From the condition of dynamic equilibrium, a differential equation of tension is given out. On the basis of the physical rules established from the industrial practice and experimental studies, the law of volume constancy, the linear relation of forward slip and tension, the state equation of continuous rolling, the formula of dynamic tension, and the formula of static tension have been obtained. These formulae reflect the functional relations between tensions, thickness, roll velocity, and time in the continuous rolling process. It is implied that the continuous rolling process is a gradually steady, controllable, and measurable dynamic system. An assumption of predicting the thickness of a steel plate using these tension formulae is also put forward.