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1.
<正> 1984年3月调研了有关煤矿输送机、采煤机等设备的润滑情况,发现齿轮副的润滑油,仍有使用机械油,汽缸油和普通工业齿轮油等的现象。这些油品的抗磨性等都较差,已不能满足煤矿机械齿轮精度和速度发展的要求。近年来,煤矿进口的设备增多,但由于对国内外齿轮润滑剂性能了解不够;以及当地石油公司油品种类不全,有什么就用什么的不合理状况等,往往造成代用不当,影  相似文献   

2.
杨杰  马钊宁 《煤矿机械》2019,(10):134-136
煤矿机械生产条件恶劣,煤矿机械若润滑不到位,致使磨损失效,情况严重会影响设备的使用寿命,甚至会引起安全事故。镶嵌式固体自润滑轴承,结合金属基体与固体润滑剂的各项性能,在低速、重载、高温的环境中表现出良好的自润滑特性,为煤矿机械设计、制造中的润滑不佳部位提供有效的解决方案,同时节能环保,减小污染,与绿色煤机设计制造技术理念一脉相承。  相似文献   

3.
通过对煤矿生产中发生机械事故的分析,表明在煤矿机械的使用过程中,人的不安全行为是引起事故发生的一个直接的原因。针对这个原因,提出了以人为中心的设计思想,考虑矿山作业的实际工作环境,试图用人机工程的方法实现煤矿机械的人机一体化,使得设备操作宜人化,提高煤矿机械的工作效率,生产的安全性。  相似文献   

4.
该文简要介绍了乳化液的品质、配制用水、使用方法对煤矿液压系统工作性能的影响 ,并提出在应用中应进一步加强油品管理 ,改善设备运行状态 ,延长设备使用寿命。  相似文献   

5.
边春娜  宋鑫 《煤矿机械》2013,34(4):276-278
计算机辅助设计是利用计算机及其图形设备帮助设计人员进行设计工作,其应用范围非常广阔。随着我国煤炭工业的飞速发展,煤矿生产机械化程度不断提升,在煤矿机械的零件之中,通过应用计算机辅助设计,提高设计效率以及科学性,成为了当前一个大的发展趋势。分析了计算机辅助设计技术在煤矿机械设计中应用的基本意义,以煤矿机械中常用零件凸轮为例,探讨计算机辅助设计在煤矿机械零件中的开发以及应用。  相似文献   

6.
油品中机械杂质的快速测定方法   总被引:1,自引:0,他引:1  
李春梅 《煤炭技术》2002,21(7):73-73
0 前言存在于油品中所有不溶于规定溶剂的杂质叫做机械杂质.油品中的机械杂质是在贮运、保管和使用过程中混入的,如泥沙、灰尘、铁锈和金属粉末等.燃料中含有这些机械杂质,会堵塞油路和滤清器,甚至会严重磨损油泵和喷油嘴.润滑油中的这些机械杂质则会磨损机件,增大残炭和灰分数量.变压器油中的这些机械杂质,会严重降低它的绝缘性能.该厂大量使用各类润滑油用于采煤机及机械加工设备.所以这些机械杂质在油品使用前必须测定出其含量,并加以清除.防止使用劣质油造成设备损伤.清除的办法可使用沉淀或过滤等去除这些机械杂质.  相似文献   

7.
研究一种煤矿机械信息化系统设计方法,将煤矿机械信息化研究设计分为外部信息输入、部件信息化、设备信息化、设备集群信息化四部分,提高煤矿机械信息化水平,为煤矿少人化、无人化提供技术基础。通过该方法设计并实现了悬臂掘进机信息化系统设计方案,有效提高悬臂掘进机信息化智能化水平及技术附加值,推动悬臂掘进机由同质化向智能化转变。  相似文献   

8.
王淼 《煤矿机械》2013,34(7):242-244
煤矿机械电气设备项目是一种科技含量比较高,集多种专业技术和多种学科知识于一体的复杂系统工程项目,如果该项目中的任何一个环节的设备出现相关故障问题,都将影响到整个设备的安全稳定运行。论述了煤矿机械电气设备自动化调试的意义与控制模式,通过差动保护实验方法具体分析了煤矿机械电气设备自动化调试技术的应用,提出了相关配套措施。  相似文献   

9.
摩擦磨损问题在煤矿机械中普遍存在 ,对煤矿机械的使用和寿命产生很大影响 ,因此重视煤矿机械设计中的摩擦学设计非常必要。介绍了有关摩擦学的基本知识 ,并分析煤矿机械设计中有关摩擦学设计的主要内容。在煤矿机械设计中融入摩擦学设计对于设备非常有益  相似文献   

10.
煤矿机械设计及交流涉及到诸多零部件及设备模型,借助建模技术构建煤矿机械模型库可以为技术交流提供极大便利。文章首先对煤矿机械模型库所涉及的内容进行介绍,在此基础上对煤矿机械模型库系统结构以及所应用到的关键技术进行了全面阐述。  相似文献   

11.
正1.Status of rare earth polishing powder Rare earth polishing powder with high content of cerium oxide began to replace iron oxide for glass polishing and became one of the key materials in glass polishing process since 1940.Compared with traditional iron oxide,rare earth polishing powder has many advantages,such as fast polishing rate,high polishing quality and long service life.It can achieve good surface quality and improve operation conditions.For example,in lens polishing,the polishing work that cerium  相似文献   

12.
<正>Chinese rare earth-related listed companies have published their 2013 annual reports.It can be understood from their reports that production and operation activities of Chinese rare earth-related companies were still heavily affected by macro economy and industrial policies.They basically followed the steps of national economy.In 2013,world economy recovered slowly but the economy  相似文献   

13.
正Pyrometallurgy Laboratory of Baotou Research Institute of Rare Earths had independently developed a new preparation technology of rare earth alloy for NdFeB.The alloy can remarkably enhance the coercivity of NdFeB magnet but also evidently reduce the production cost of the magnet.The new master alloy was prepared in the kA pilot-scale electrolytic cell by the independent technology.The rare earth master alloy can be used as the raw material for NdFeB.Compared  相似文献   

14.
<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  相似文献   

15.
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  相似文献   

16.
<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  相似文献   

17.
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.  相似文献   

18.
<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  相似文献   

19.
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.  相似文献   

20.
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.  相似文献   

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