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胡强 《Canadian Metallurgical Quarterly》2011,13(2)
用户计量PT熔断器故障,能造成系统中的故障,使供电部门蒙受很大的损失.对熔断器熔断的原因作了详细的分析,认为由各种原因造成的铁磁谐振故障是造成熔断器熔断的主要原因.并对部分原因进行了仿真分析,给出了仿真结果. 相似文献
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现场通过对RH炉真空系统真空度低的原因进行排查分析,查出影响真空度的原因,解决了影响真空度的问题,满足了工艺生产要求,为以后排查分析真空度低下的原因积累了经验。 相似文献
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主要介绍了连续酸洗线开卷器设备存在的问题,分析了导致开卷器损坏的原因,并对导致损坏的原因逐项进行了分析研究,对各项原因分别提出了合理的可行性解决办法,为以后的生产提供保证。 相似文献
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本文主要介绍了转炉产生前期喷溅的原因以及发生喷溅的条件,特征,详细分析了产生喷溅的特征条件,结合实践论述各类条件下产生喷溅的原因,同时,就如何抑制各类原因引起的喷溅,制定了控制措施。 相似文献
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<劳动合同法>颁布以来,很多用人单位采取各种做法来规避无固定期限劳动合同.本文通过解读无固定期限劳动合同的法律条款,从经济原因、观念原因、立法及执法原因等方面分析了用人单位规避无固定期限劳动合同现象的原因,提出了对用人单位规避无固定期限劳动合同现象的规制建议. 相似文献
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分析了汽车整体式方向机转向沉重故障的原因 ,并针对该原因提出了方向机修理的方案 ,介绍了在修理过程中得到的经验数据。 相似文献
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本文论述了过滤布在平板式轧制油过滤器中所起的作用;考察了两种过滤布的实际使用效果;通过试验分析了过滤布对过滤效果的影响。 相似文献
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镀铝纸--包装界的绿色追求 总被引:1,自引:0,他引:1
胡志鹏 《有色金属材料与工程》2005,26(1):32-35
介绍了镀铝纸在包装领域的广泛应用,并着重介绍了两种镀铝纸——真空镀铝卡纸和镭射喷铝纸。最后指出:镀铝纸顺应了环保潮流。 相似文献
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Paper clay has several properties that make its use in vertical barriers very promising. In this paper the characteristics of two paper sludges (which will also be referred to as paper clays) one from the Erving Paper Company and one from the International Paper Company are considered. To determine the feasibility of paper clay for heavy metal attenuation, batch tests, column tests, hydraulic conductivity tests, and pressure filtration tests were performed. Batch testing showed that the metal, the distribution coefficient (Kd) ranged from as low as 0.002 L/g for manganese to as high as 6.7 L/g for lead in International paper clay. In the Erving paper clay the Kd ranged from 0.007 L/g for manganese to 1.9 L/g for cadmium, while the International paper clay Kd ranged from 0.002 L/g for manganese to 6.7 L/g for lead. Chemisorption was established as the predominant metal binding mechanism in both clays with the only exceptions being manganese adsorption on International paper clay that indicated a constant partitioning, and copper and lead on Erving paper clay that indicated constant partitioning and cooperative adsorption, respectively. Both hydraulic conductivity and pressure filtration tests revealed permeabilities ranging from 10?5 to 10?7?cm/s. Chloride testing showed that the coefficient of hydrodynamic dispersion (D) within paper clay is on the order of 10?7?cm2/s. 相似文献
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合金化及涂层技术提高铌基合金的抗高温氧化性能 总被引:1,自引:0,他引:1
综述了铌基合金的成分设计及抗高温氧化研究的现状,对铌基合金包埋渗法制备涂层研究的进展及存在的问题进行了阐述,提出了解决铌基合金抗高温氧化性能差的可能途径。 相似文献
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首先对矿业权资本经营进行简单的理论分析。然后从资本内涵的三个方面内容分析阐述矿业权的资本属性。接下来阐述矿业权资本经营的内容和形式及其意义,最后结语认为矿业权资本经营可以推动矿业企业快速成长,达到规模经济。实现资本整合和产业升级。 相似文献
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Stephen R. Ledbetter Andrew R. Walker Alan P. Keiller 《Canadian Metallurgical Quarterly》2006,12(3):137-149
This paper introduces the materials, design methods, and details used to create glass structures from small unframed glazing screens to the largest glass walls and roofs. It includes information on the use of glass in floors, staircases, and bridges. The purpose of this paper is to give a state-of-the-art overview of current technology and to look at ideas being developed in the laboratory. Glass is an unforgiving material and the paper explains the measures taken to reduce risk of failure. 相似文献
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Many paper based chart recorders still suffer from paper uptake systems for the collection of chart record that operate inefficiently or haphazardly. An efficient low cost paper minder using 1.2 mm diameter stainless steel wire for the Siemens-Elema AB Mingograph 7, has been developed. This wire pivots from the end of the chart viewing table and provides an effective force to redirect paper into the standard collecting basket over the entire range of paper speeds. 相似文献
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C. Kocher W. Watson M. Gomez I. Gonzalez V. Birman 《Canadian Metallurgical Quarterly》2002,15(3):111-117
This paper outlines several issues related to the design of sandwich structures with a truss-reinforced polymeric or hollow core. The first part of the paper employs a simple analytical model that illustrates the contribution of such a core to the structure’s facing stability. While the enhancement of the facing stability due to truss reinforcement is shown to be considerable, the problems of local strength and truss-element (pin) stability have to be analyzed prior to the acceptance of the design concept discussed in the paper. Accordingly, the second part of the paper presents the results of finite-element analysis used to pinpoint potentially weak elements in the considered design. The paper results in a number of practical conclusions and recommendations that may be useful for the development and implementation of sandwich structures with truss-reinforced cores. 相似文献