铸造熔炼技术与工业炉研讨会展示会将在上海举办

自 1992年由 178个国家参加的“联合国环境与发展大会”后 ,可持续发展已成为世界各国共同的发展战略。按照目前人口增长及科技与工业化的发展趋势 ,废物和污染物的排放大大超过了地球吸收消散这类物质的能力 ,自然资源的消耗亦超过了它的恢复能力。铸造业是能源和材料的消耗大户 ,并且排放大量的废渣、废气、废尘 ,产生水污染和噪声。我国铸造业的耗能、耗材和污染情况更为突出。在铸造业中 ,熔炼技术、熔炼设备以及相关工部的技术和设备 ,又是铸造业节能节材和减少污染的关键。因此 ,中国机械节能节材技术协会铸造分会与铸造杂志社联手 ,…     

浅析国内汽车铸造业的发展

要介绍了国内汽车工业与铸造业的关系。详细阐述了汽车铸造业面临的主要问题和发展方向。     

铸造乡镇企业技术改造发展战略

本文叙述了国内外铸造业的差距，铸造乡镇企业的现状和发展趋势；提出了四种类型的铸造乡镇企业发展战略和几种行业、类型的铸造企业技术改造的方式和方法。     

泡沫镍及镍电池市场

随着长沙力元泡沫镍产能的扩大，全球泡沫镍的生产和供货的重心由日本和欧美转移到中国。目前，泡沫镍和镍电池产业的高利润生产期已经过去，重新思考市场及行业的发展，对相关企业是十分必要的。     

考察交流探讨--赴日本尼康公司进行数码照相机技术访问

２００１年１０月１４日至１０月２１日，国家照相机质量监督检验中心周刚主任一行前往日本尼康公司进行考察与访问。访问期间，除了与尼康公司技术开发部门的专业人员进行了广泛的技术交流与研究外，还与尼康公司的高层管理人员就日本照相机行业的宏观管理进行了全面深入的交流与探讨。国家照相机质检中心就中国照相机行业的技术标准、质量监控及目前进口照相机销售申请程序等组织管理办法向日本尼康公司作了介绍，日方也就日本目前照相机行业宏观管理作了较为详细的介绍。 日本是世界上照相机生产大国，也是照相机产品科技开发领头国家之…     

缩微与信息处理技术的变迁

本文系统记述了中国和日本缩微技术的应用及发展历程，同时也介绍了电子文件及电脑信息处理系统的发展过程，使人们清楚地了解到信息处理和保存技术在经济活动中的重要性。     

实力铸就 百年辉煌——专访日本山武集团总裁佐藤良晴先生

创立于1906年的日本山武集团，至今已有近一百年的历史，自创立以来就一直致力于发展检测和控制技术的山武始终在日本自动化行业保持领先地位。1973年，山武进入中国市场，凭借着优良的产品性能及为客户服务的信念，山武在中国的业务稳步发展，产品受到广大中国用户的好评。是什么使得这个百年企业具有如此强大的生命力，为了更多的了解山武，我们采访了佐藤良晴(Yoshiharu Sato)先生——日本山武集团总裁。     

怎样对照相机进行质量检验和质量认证?--国家经贸委召开座谈会听取日本尼康公司高层领导意见

参加者：苏 波 国象经贸委行业规划司司长 叶定达 国家经贸委行业规划司处长 周 刚 杭州照相机械研究所副所长 国家照相机质量监督检验中心主任 俞儒庆 国家照相机质量监督检验中心常务副主任 朱清字 照相机行业企划中心主任 富野直树日本尼康株式会社执行取缔役 日本尼康株式会社开发部部长地点：杭州金溪山庄会议厅时间：２００１年１１月２３日 苏 波：日本尼康公司是一个名牌企业。目前，中国照相机产量占了世界产量的一半以上，中国已成了世界照相机生产基地。照相机行业在加入世贸组织之后将会更快发展。 经贸委是中国照相机工业的主…     

大跨度开合空间钢结构

本文主要阐述了大跨度开合结构目前国外发展应用概况及基本设计原则，重点介绍加拿加多伦多天空顶及日本福冈体育馆，并对其分类，应用范围，优缺点，存在问题及难点等也进行了阐述，以期对今后在我国采用这种结构起一定的推动作用。     

清华银纳与日本住友签订钕铁硼专利产品销售许可协议

2000年9月5日,北京清华银纳高科技发展公司与日本住友特殊金属在人民大会堂签定了钕铁硼专利销售许可协议。 钕铁硼永磁体是目前稀土金属材料中最重要的领域之一,它已广泛应用于电子、信息、汽车、医疗、航天、选矿等各个领域。自1982年日本人发明钕铁硼材料以来,由于中国在稀土资源方面的优势以及低廉的成本,使得钕铁硼永磁材料的产业化得到了迅速的发展,目前我国已年产钕铁硼材料5000t以上,与日本的产量相当。但是由于中国大部分厂家没有获得日本的专利销售许可,只能将产品以低价格销售到非专利地区。而非专利地区的市场空间极为有限,使得中国的生产厂家只能自相残杀,造成中国的钕铁硼行业恶性竞争,对中国的钕铁硼产业发展达到世界先进水平非常不利。北京清华银纳高科技发展公司作为该行业     

中国铸造行业可持续化发展的思考

我国铸造行业正面临实现从铸造大国向铸造强国转变的发展机遇,但造成的环境污染相当严重.阐述了我国铸造行业的发展方向:大型化、轻量化、精确化、数字化、网络化以及绿色制造.围绕其发展方向,指出我国铸造行业的可持续化发展可从铸造技术、原辅材料、铸造废弃物的回收与再利用、环保以及绿色铸造的评价方法和指标体系等方面予以体现.     

铸造车间噪声源及噪声控制方法

本文综述了铸造车间噪声的来源和种类 ,介绍了铸造车间的噪声控制方法。     

Measurements of ultrafine particle concentrations and size distribution in an iron foundry

The number and surface area concentration of ultrafine particles in an iron foundry is of interest as freshly generated ultrafine particles are produced by metal melting, pouring and molding processes. This study measured the number and surface area concentrations of ultrafine particles and their size distributions in an iron foundry using a scanning mobility particle sizer (SMPS). The 10-100 nm ultrafine particle number concentrations (NC(0.01-0.1)) and surface area concentrations (SC(0.01-0.1)) measured at the iron foundry were 2.07 x 10(4) to 2.82 x 10(5)particles cm(-3) and 67.56 to 2.13 x 10(3)microm(2)cm(-3), respectively. The concentrations changed dramatically depending on on-site manufacturing conditions. The NC(0.01-0.1) levels in the iron foundry were approximately 4.5 times higher on average compared with those in the outdoor ambient environment. These measurement results indicate that the presence of extra particles in the workplace air is within the ultrafine range. Additionally, the analytical results suggest that the number mode diameter can be used to estimate the SC(0.01-0.1) levels using the NC(0.01-0.1) levels. Moreover, the ultrafine particle number mode diameter was found to be about 46.1 nm in the iron foundry.     

计算机技术在铸造中的应用现状与发展趋势

全面介绍了计算机技术在铸造中应用的基本概念及国内外现状，并展望了未来的发展趋势。     

Internal migration of scientists in Russia and the USA: the case of physicists

To assess endocrinologic and metabolic research productivity in East Asia (i.e., China, Japan, and South Korea) and correlations between socioeconomic factors and endocrinologic and metabolic research productivity. Articles (except editorials, conference abstracts, letters, news, and corrections) published in 134 endocrinology and metabolism journals in 2005–2014 were screened with the Web of Science database. Total and annual numbers of articles, study designs, impact factors, citations, and articles in high-impact-factor journals were determined for China, Japan, and South Korea. Annual numbers of articles were related to socioeconomic factors for each country. In 2005–2014, there were 144,660 articles from East Asia published in endocrinology and metabolism journals: 10,190, 9470, and 3124 from Japan, China, and South Korea, respectively. Japan published the most randomized controlled trials, followed by China and South Korea, respectively. China had the most articles in high-impact-factor journals, followed by Japan and South Korea, respectively. South Korea had the highest average impact factor and number of citations. During the period studied, annual numbers of articles from China and South Korea increased remarkably (P < 0.05) but remained stable for Japan. Annual numbers of articles from China and South Korea were positively correlated with gross domestic product and expenditure on health care (P < 0.05). The increase in endocrinology and metabolism articles during 2005–2014 in China and South Korea was associated with improved socioeconomic conditions. China has made progress in scientific publication in the past decade; however, there is still room for improvement.     

我国连锁经营企业标准化建设初探

通过分析我国连锁经营企业发展现状和问题,阐述标准化工作对连锁经营企业的作用和意义,并在此基础上,对于连锁经营企业如何开展标准化建设提出了意见和建议。     

A horizontal capacity reservation game under asymmetric information

We investigate a common horizontal dual-sourcing model in the semiconductor industry. The supply chain consists of an integrated device manufacturer (IDM) and a pure-play foundry. The IDM can make internal production and source from the foundry, and only the IDM sells the products to the market. Both the IDM and the foundry must invest in production capacity before making production. We consider stochastic one-period demand, which can either be a high type or a low type. We assume that the true demand type is private information to the IDM such that the IDM and the foundry engage in a signalling game. We identify the unique separating equilibrium in this asymmetrical information setting. We find that information asymmetry may mitigate or aggravate the double marginalisation effect, and that it may also affect the capacity allocation between the IDM and the foundry. Furthermore, we conduct a numerical study to investigate the sensitivity of the equilibrium and the information rent.     

环保型铸造用无机树脂粘结剂研究进展与展望

综述了铸造用磷酸盐无机树脂研究现状及发展趋势,指出了研究使用无机树脂的必要性及其存在的主要问题和研究进展,展望了其应用前景.     

Health risk assessment by measuring plasma malondialdehyde (MDA), urinary 8-hydroxydeoxyguanosine (8-OH-dG) and DNA strand breakage following metal exposure in foundry workers

Silica particles and metals are important occupational hazards in foundry workers, and exposure may result in DNA damage and lipid peroxidation through oxidative stress. This study aimed to compare oxidative damage by measuring the levels of plasma malondialdehyde (MDA), urinary 8-hydroxydeoxyguanosine (8-OH-dG) and DNA strand breakage in workers at two foundry plants (exposure group) and in town hall employees (control group) in central Taiwan. Air samples for metals analysis in the workplace were also collected to assess the health risk to foundry workers.Significantly higher MDA levels (4.28 μM versus 1.64 μM), DNA strand breakage (6.63 versus 1.22), and 8-OH-dG levels (5.00 μg/g creatinine versus 1.84 μg/g creatinine) were found in exposure group compared with the control group. Higher levels of these parameters were also found in workers involved in manufacturing than in workers involved in administration. Higher air respirable dust concentrations were found in manufacturing departments (0.99 mg/m³) than in administrative departments (0.34 mg/m³). The health risk assessment on metals exposure showed that the cancer risk for Cd, Cr and Ni were all above 1 × 10⁻⁶. Future studies are necessary to determine whether metals exposure can contribute to oxidative damage in foundry workers.     

Investigation on the effects of polymer impregnated aggregate on polymer mortars properties

The sustainable management of solid wastes stimulates metallurgic and metal mechanics industries to look for safety applications for such wastes. The present paper examines the mechanical properties, compressive and flexural strength, of polymer mortars (PM) made with spent foundry waste, i.e., polymer impregnated foundry sand as aggregate, and presents a comparison with specimens made with fresh sand. The foundry sand is contaminated with alkaline-phenolic resin from the mould making process. PM consists of mineral filler and a polymer binder, which is normally a thermosetting resin. Polyester recycled from PET and epoxy resins are used as binders. It is found that the recycled sand does influence the mechanical properties, i.e., the polymer mortars made with recycled sand presents a decrease in mechanical characteristics of polymer mortars. Environmental acceptance of foundry sands requires reliable knowledge of sand composition and sand residue composition variations, especially regarding their environmental characteristics.