智能型机电一体化液压冲击器研究

通过分析传统的行坟冲击器所存在的主要缺陷，提出了一种新型的基 控制的压力反馈式液压冲击器。并阐述了新型液压冲击器的结构特点与工作原理，为液压冲击器的智能控制研究奠定了基础。     

液压冲击器的结构设计与密封选择的探讨

液压冲击器的结构设计与密封选择的探讨从液压冲击器的工作原理分析入手，着重讨论了液压冲击器的典型结构设计的思路和方法，并对与其有关的密封选择作了简述     

提高高风压潜孔冲击器活塞寿命的途径

活塞是高风潜孔冲击器中最重要的零件，本文以提高冲击器的使用寿命为目的，采用了优化活塞结构，合理选择材质，严格加工要求，正确制定热处理工艺方案等必要措施。     

PCY180型液压破碎冲击器主要参数优化设计研究

以ＰＣＹ１８０型液压破碎冲击器为研究机型，对其主要参数的变化规律采用功率键合图法进行动态特性仿真研究，并对主要参数进行了优化选取及对结构方案的实现方法进行了建设性的研究，为改善液压破碎冲击器的冲击性能提供了可靠的理论依据。     

高气压潜孔冲击器结构原理与设计

随着科学技术的进步，矿山工程建设的需要，高气压潜孔冲击器冲击功大、冲击功率高、钻进效率高、故障率低，而得到越来越广泛的应用。高气压潜孔冲击器的制造成本一般在3000元左右，而售价却在7000元以上，巨大的利润空间使更多的制造厂商纷纷加入到它的制造行列。随着工作的深入，高气压潜孔冲击器结构复杂、精度要求高、制造难度大的矛盾突显出来，使部分厂商陷入进退维谷的境地。本文以6时高气压潜孔冲击器为例叙述了高气压潜孔冲击器的动作原理。文中叙述了十四种高气压潜孔冲击器的结构特点、性能对比，附有各自的结构图。     

WQ—75A型气动潜孔冲击器的电算模型的建立及其应用

根据ＷＱ－７５Ａ型冲击器结构原理，将其视为一热力系统，以气体热力学和动力学理论为基础，建立了冲击器动力过程数学模型，并为计算机模拟气动冲击器动力过程和分析动力参数提供了理论依据和方法。     

一种新型氮气式液压冲击器的实验研究

新型氮气式冲击器是一种无隔膜式蓄能器的冲击器，实验结果反映出了冲击器的运动规律，证明了理论研究的正确性，为冲击器的设计和控制提供了新思路。     

液压冲击器的研究状况和发展趋势

介绍了液压冲击器的国内外发展状况，总结液压冲击器的基本结构和原理以及冲击动力学对冲击器整体性能提高的作用，并对液压冲击机械的发展前景作了进一步的展望。     

液压潜孔冲击器与水压潜孔冲击器

分析了顶锤式液压凿岩机与气动潜孔钻机的优缺点，介绍了液压与水压潜孔冲击器在国外的应用，指出了水压潜孔冲击器与液动冲击器的区别，希望引起我国凿岩机械行业对水压潜孔凿岩技术的重视。     

新型低气压无阀冲击机构的研究

通过对无阀冲击器工作原理的研究，分析了活塞回程阶段和冲程阶段各工作参数的关系，找出了先阀冲击器工作性能的主要参数，提出了一种新型冲击机构，并在产品设计和实际使用中得到了验证。     

Market and recycling of NiMH battery

<正>Market status and future trend of NiMH battery1.Global market of small NiMH battery Global market size of small NiMH batteries declined year on year since 2011.The trend will continue to 2018,at the rate of 5%to 10%annually.Demand for small NiMH batteries will be stable gradually.Many electrical apparatuses are powered by the built-in lithium battery today,which is the main reason for the shrunk market of small NiMH batteries.But,for some products,small NiMH     

China rare earth market review

正September 1-10,2014 Affected by the National Day holiday,rare earth transaction was stagnant and the market showed a weak steady state.As there was no good news for downstream market,some products with flat demand would likely rally slightly for some time to     

Current situation and future trend of China rare earth luminescent material industry

<正>Rare earth luminescent material is one of the most important application sectors of rare earths.China enjoys the exceptional advantage to develop rare earth luminescent material for its abundant rare earth resources.After several decades'endeavor,China's rare earth luminescent material industry,headed by rare earth phosphor for lamp and LED and high efficient rare earth energy-saving light source,has been gradually developed into a scale industry.China has become a major production base of rare earth phosphor for lamps and rare earth     

China rare earth market review

正June 1~10,2014Rare earth market remained weak.Quoted price of rare earth products was similar to that in May.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,polishing powder and ceramic industries remained inactive.Demand from downstream industry was soft.Consumers purchased on their needs.Suppliers had strong intention to sell.Prices of rare earth products     

2014 second batch of rare earth quota released

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China rare earth market review

正November 21~30,2014Due to weak demand from downstream industries,transactions of rare earth in Chinese domestic market were inactive.It was difficult to sell any rare earth products except for dysprosium oxide and terbium oxide.Suppliers lost confidence in recent market.Demand for rare earth products was soft.Consumers continued to take a wait-and-see attitude.Rare earth export market remained slow.     

Galaxy Magnets achieved the net profit of 34.02 million yuan in the first six months of 2014

正Galaxy Magnet announced its financial results for the first half of 2014 on August 14.For the first six months ended on 30 June 2014,Galaxy Magnet achieved operation income of RMB 182.3 million,up8.40% over the same period of 2013,and the net profit attributable to the shareholders of the listed company of 34.02 million yuan,increasing 35.49% over the same period of last year.Stable performance increase was led by development of new customers and application market of magnets.     

Rare Earth Application in Steel in China

<正>China has rich rare earth resources.Output of rare earth and steel in China ranks the top first in the world.However,there is still certain distance between the steel produced in China and developed countries from the point of varieties and quality.China still has to import some types of steel.Improving the quality should be emphasiZed in future development of steel industry in China.Rare earth can be used to upgrade traditional steel     

Current situation and future trend of China rare earth luminescent materialindustry(continued)

<正>Developing ecological lighting source The world is facing the big problem of energy shortage today and the contradiction between economy development and environmental protection is worsened.Therefore,people are more likely to choose an ecological light source that is more energy efficient and environmental friendly.The choice provides great opportunity for the development of rare earth optical material industry in China.The concept of green lighting positions rare earth luminescent material as a leading player in illumination market.The light source of both rare earth luminescent lamp and LED lamp is ecological and energy saving.This is why     

稀散金属产业的观察与思考

分析了近年来国内外稀散金属产业的生产、应用、资源与市场状况.铟锡氧化物靶材、砷化镓晶片、锗红外材料、铼高温合金和硒在电解锰及玻璃的应用等已成为稀散金属的主要应用领域.稀散金属的产量快速增长达到历史高位而导致了市场的失衡.以GaInP_2/GaAs/Ge,CIGS和CdTe为代表的非硅系太阳能电池是稀散金属的新兴应用领域,将给稀散金属带来日益增长的需求.