废旧汽车零部件资源化系统模型的建立

废旧汽车资源化回收利用越来越引起人们关注，已成为全球化问题。处理废旧汽车的根本措施是建立完善的回收系统，资源化和综合利用是最积极的措施。文中通过对废旧汽车回收模型的研究以及资源化技术的进展回顾，建立了废旧汽车资源化系统模型，以期加快我国废旧汽车零部件资源回收的步伐。     

海尔开始挖掘电子废弃物金矿

近日，国家发改委在其网站上公布了《废旧家电及电子产品回收处理管理条例》，公开征求社会公众意见，它对于废旧家电回收利用涉及的产业有着极其重要的意义。一些有敏锐目光的家电企业正在紧锣密鼓地做着相关工作的研发和实践。海尔集团此前就与清华大学共同承担了废旧家电资源化利用的863项目，还与同济大学、中国家用电器研究院等密切合作，同时还与其他的世界著名电器生产企业建立合作与交流的关系，保证了技术方案的不断更新和完善。海尔集团拟建立废旧家电回收及资源化综合应用示范工程，以防止废旧家电污染环境，帮助解决我国的资源危机：消除废旧家电存在的安全隐患：减少老式废旧家电的能源浪费：打破国外绿色贸易壁垒的封锁口：形成具有中国特色的回收和处理方案，发展中国家用电器行业的循环经济。     

退役汽车梯度资源化及其零部件可再制造性评价

针对日益增长的退役汽车,提出了退役汽车梯度资源化概念,分析退役汽车循环利用的特点和影响资源化梯度等级的因素。建立了汽车零部件可再制造性评价指标体系,并根据所建立的模型完成典型汽车零部件可再制造性评价分析。     

废旧机电产品资源化途径选择分析

通过研究废旧机电产品的特征,结合国内外废旧机电产品资源化现状,分析了废旧机电产品资源化的再利用、再制造、再循环三种主要途径及其特点.     

废旧机电产品资源化的基本途径及发展前景研究

废旧机电产品资源化是以废旧机电产品为对象,通过现代技术与工艺加工,在规范的市场运作下,最大限度地开发利用其中蕴含的材料、能源及经济附加值等财富,使其成为有较高品位可以使用的资源,以达到节能、节材、保护环境等目的,从而支持社会的可持续发展。废旧机电产品资源化的基本途径是再利用、再制造和再循环,目标是使再利用、再制造的部分最大化,使再循环的部分最小化,使安全处理的部分趋零化。参考发达国家开展废旧机电产品资源化的成效并结合我国国情,可预测我国废旧机电产品资源化到2020年将达到年产值640亿美元,并提供200多万人就业;将通过质优价廉的再制造产品提高人民的物质文化生活;将消除工业及电子垃圾的污染及危害,其社会效益、经济效益和环保效益十分显著。推动废旧机电产品资源化的关键是建立相应的法律体系,规范废旧机电产品资源化企业行为及市场运作,确立废旧机电产品资源化的制造商责任制,对废旧机电产品资源化企业实施认证制度,并加强包括先进表面工程技术在内的各项资源化关键技术的研究。     

废旧机电产品资源化途径选择分析

通过研究废旧机电产品的特征,结合国内外废旧机电产品资源化现状,分析了废旧机电产品资源化的再利用、再制造、再循环三种主要途径及其特点。     

促进我国废旧电器再利用产业化进程

废旧电子电器产品再利用是循环经济的重要组成部分.如何尽快形成废旧电子电器产品环保回收和资源化再利用产业,是我们面临的新课题.     

走进邦普集团

走进湖南邦普循环科技有限公司这样一家专业从事各种废旧镍氢、镍镉、锂离子等二次电池、废镍、废钴资源化回收与处理的企业就给人一种清洁优美、耳目一新的感觉:花园式的厂区、高大的厂房、材料库,一个个硫酸罐、废酸罐、循环水池、救生池、回收池……非常规范.而这只不过是邦普集团的湿法冶金基地,它和另一个火法冶金基地--江西广丰县邦普镍钴实业有限公司共同构成了目前国内外知名的废旧电池资源化桥接式循环演示基地和废电池资源化清洁生产样板工厂.此外邦普集团还拥有南海维远电池事业部等7家公司.     

废旧光盘的资源化技术

本文介绍了国内外对废旧光盘的回收再利用技术现状,探讨了在其资源化过程中涉及的几个技术和经济问题,在此基础上预测我国废旧光盘资源化利用领域的技术发展前景.     

南太湖的废旧家电回收现状

废旧家电回收和资源化处理是一项利国利民的事，在南太湖，像洗衣机、电视机等这样的家用电器是在80年代开始逐渐地进入到寻常百姓的家庭，现在，这些早期的家用电器几乎都已到了报废期，正在淘汰；家用电脑、手机的普及是在90年代中、后期，由于它的使用周期缩短，因此，其中的一部分也已到了     

Effects of Post-weld Heat Treatment on Microstructure,Mechanical Properties and the Role of Weld Reinforcement in 2219 Aluminum Alloy TIG-Welded Joints

In as-welded state, each region of 2219 aluminum alloy TIG-welded joint shows diff erent microstructure and microhardness due to the diff erent welding heat cycles and the resulting evolution of second phases. After the post-weld heat treatment, both the amount and the size of the eutectic structure or θ phases decreased. Correspondingly, both the Cu content in α-Al matrix and the microhardness increased to a similar level in each region of the joint, and the tensile strength of the entire joint was greatly improved. Post-weld heat treatment played the role of solid solution strengthening and aging strengthening. After the post-weld heat treatment, the weld performance became similar to other regions, but weld reinforcements lost their reinforcing eff ect on the weld and their existence was more of an adverse eff ect. The joint without weld reinforcements after the post-weld heat treatment had the optimal tensile properties, and the specimens randomly crack in the weld zone.     

The First Phase of the SRIF Industrialized Base in ＂West Area＂ Has Been Put into Operation

After nearly two years＇ tense construction, the first phase of industrialized base of Shenyang Research Institute of Foundry （SRIF）, located at the Tiexi Casting and Forging Industrial Park in the west of Tiexi District, has now been completed and formally put into operation.     

Effect of Rare Earth Doping on Impedance,Modulus and Conductivity Properties of Multiferroic Composites:0.5(BiLa_xFe_(1-x)O_3)–0.5(PbTiO_3)

The Lanthanum-doped bismuth ferrite–lead titanate compositions of 0.5(Bi LaxFe1-xO3)–0.5(Pb Ti O3)(x = 0.05,0.10,0.15,0.20)(BLxF1-x-PT) were prepared by mixed oxide method.Structural characterization was performed by X-ray diffraction and shows a tetragonal structure at room temperature.The lattice parameter c/a ratio decreases with increasing of La(x = 0.05–0.20) concentration of the composites.The effect of charge carrier/ion hopping mechanism,conductivity,relaxation process and impedance parameters was studied using an impedance analyzer in a wide frequency range(102–106Hz) at different temperatures.The nature of Nyquist plot confirms the presence of bulk effects only,and non-Debye type of relaxation processes occurs in the composites.The electrical modulus exhibits an important role of the hopping mechanism in the electrical transport process of the materials.The ac conductivity and dc conductivity of the materials were studied,and the activation energy found to be 0.81,0.77,0.76 and 0.74 e V for all compositions of x = 0.05–0.20 at different temperatures(200–300 °C).     

Quantitative Analysis of the Crystallographic Orientation Relationship Between the Martensite and Austenite in Quenching–Partitioning–Tempering Steels

The orientation relationships(ORs)between the martensite and the retained austenite in low-and medium-carbon steels after quenching–partitioning–tempering process were studied in this work.The ORs in the studied steels are identified by selected-area electron diffraction(SAED)as either K–S or N–W ORs.Meanwhile,the ORs were also studied based on numerical fitting of electron backscatter diffraction data method suggested by Miyamoto.The simulated K–S and N–W ORs in the low-index directions generally do not well coincide with the experimental pole figure,which may be attributed to both the orientation spread from the ideal variant orientations and high symmetry of the low-index directions.However,the simulated results coincide well with experimental pole figures in the high-index directions{123}_(bcc).A modified method with simplicity based on Miyamoto’s work was proposed.The results indicate that the ORs determined by modified method are similar to those determined by Miyamoto’method,that is,the OR is near K–S OR for the low-carbon Q–P–T steel,and with the increase of carbon content,the OR is closer to N–W OR in medium-carbon Q–P–T steel.     

The Mirror with Patterns of Auspicious Animals and Grapes——Exquisite cast mirror and the technology of surface tin-enrichment by rubbing-in and infiltration of tin-rich powder

<正>Bronze mirrors were used by the Chinese people before the introduction of the glass mirror.Only after it was replaced by the glass mirror did the bronze mirror gradually retreat from people's lives.Different styles of bronze mirrors were made in different historical periods,particularly in the Warring States Period,the Han and Tang Dynasties,which were the three peaks of the development of bronze mirror arts in ancient China.The casting techniques were exquisite.The surface of the bronze mirror was smooth and bright enough to reflect one's image,and there were scarcely any casting defects on the mirror surface.On the back of the bronze mirror,there were rich depictions of Arts and Humanities,and the ornamentations were also     

The 9th China International Diecasting Congress & Exhibition

The 9th China International Diecasting Congress ＆ Exhibition was held on July 22-24, 2014 at Shanghai New International Expc Centre. This exhibition was the most successful over the years, with over 6890 visitors and 155 exhibitors, and the exhibition area increased by 30% from 9,500 square meters in 2012 to 12340 square meters. Die casting enterprises from a total of 24 countries and regions, including China mainland, Chinese Taiwan and Hong Kong, South Korea, Japan, Germany, India, Thailand, Malaysia, the United States, Russia, Australia, Iran, Ukraine, Brazil, Colombia, Singapore, Austria, Canada, Croatia, France, Turkey, United Kingdom, Vietnam, attended the congress and exhibition.     

Introduction of the Fluid Control Engineering Institute of Kunming University of Science and Technology

正The Fluid Control Engineering Institute of Kunming University of Science and Technology was set up in 1996.The researches of institute concentrate on electro-hydraulic(pneumatic)servo/proportional control and hydromechatronics.The Institute is committed to research and development of electro-hydraulic control of high-end technical equipment in ferrous metallurgy refining produc-     

RARE METALS Volume Contents

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Antimony Induced Crystallization of Amorphous Silicon

Antimony induced crystallization of PVD (physics vapor deposition) amorphous silicon can be observed on sapphire substrates. Very large crystalline regions up to several tens of micrometers can be formed. The Si diffraction patterns of the area of crystallization can be observed with TEM (transmission electron microscopy). Only a few and much smaller crystals of the order of 1μm were formed when the antimony layer was deposited by MBE (molecular beam epitaxy) compared with a layer formed by thermal evaporation. The use of high vacuum is essential in order to observe any Sb induced crystallization at all. In addition it is necessary to take measures to limit the evaporation of the antimony.