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石材行业的发展带动了石材加工机械和超硬材料行业的发展。与此同时也出现了一些问题，其中对锯片问题进行了重点阐述，并提出了金刚石锯片厂家的主攻目标和方向。 相似文献
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钻井工程用超硬材料及钻头的发展 总被引：10，自引：0，他引：10
介绍了钻井工程用超硬复合材料（包括ＰＤＣ、ＰＣＢＮ、陶瓷和金刚石膜）的发展现状及前景;同时也介绍了以这些材料切削具的钻头制造及应用情况;指出金刚石膜合成技术的发展已使金刚石膜制造钻井工程用切削具成为可能。 相似文献
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通过对国内外人工超硬材料技术水平、生产情况，市场情况的调研，分析，总结出了超硬材料工业在合成技术，合成材料，产品市场方面的发展规律，提出了加快发展我国人工超硬材料的途径和措施。 相似文献
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巩固提高冶金地质超硬材料产业有关问题的探讨卢进（冶金部地质勘查总局·北京·１００７１１）冶金地质超硬材料产业经过十多年的风风雨雨，总的看是在不断发展的，经济效益和安置效益显著，已成为冶金地质主要支柱产业之一。近两年来，超硬材料行业步入低潮，市场竞争日... 相似文献
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超硬材料在工业发展中扮演着举足轻重的角色,特别是地质钻探行业中超硬材料的研制与应用更显突出。以前钻探界有句话：“有什么样的磨料就有什么样的钻进设备和钻进工艺”,这充分说明了它们的因果关系。金刚石钻头随着人造金刚石的品种、结构、性能、品质等方面不断提高,很大程度上满足了地质钻探行业的需求,并推动了钻探行业的飞速发展;同样钻探应用中提出的新需求,又不断促进超硬行业继续探索。两者相辅相成,互相促进,共同发展。本文结合大量实例阐述了地质钻探行业中使用的超硬产品的特点、种类、性能等。真切地期待未来超硬材料能够更精更新,更多地在钻探产业实现创新突破。 相似文献
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对我国超硬材料及其制品市场国际化进展缓慢的原因进行了分析,提出加快超硬材料及其制品市场国际化的对策。 相似文献
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苏联乌克兰科学院超硬材料研究所研制成功的新型超硬材料斯拉乌季契,在油气田钻井和其他矿产地质钻探中,得到了广泛的应用。它不仅可以用于软地层和中硬地层,也可用于硬地层。斯拉乌季契可用于制造钻头和扩孔器。 相似文献
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《中国超硬材料新技术与进展》一书作者方啸虎教授是我国超硬材料研究和企业界知名专家之一。1971年始至今一直致力于以人造金刚石为主的研究与生产技术工作，积30余年经验，尽管开始着眼点是为解决地质钻探用金刚石钻头材料问题，而后根据中国国情在超硬材料领域从事了多项内容的研究与开发创新实践，成就多多，对我国超硬材料技术与生产进步，作出了卓越贡献。 相似文献
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Emily Keeble David I. Whiteside Michael J. Benton 《Proceedings of the Geologists' Association. Geologists' Association》2018,129(2):99-119
Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco. 相似文献
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Gilles Serge Odin 《Comptes Rendus Geoscience》2002,334(6):409-414
Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414. 相似文献
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The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts 总被引：4，自引：0，他引：4
The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H2O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H2O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species. 相似文献
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Muriel Rocher Stéphane Baize Stéphane Jaillet Edward Marc Cushing Yannick Lozac&#x;h Francis Lemeille 《Comptes Rendus Geoscience》2003,335(8):701-708
Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ1 roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003). 相似文献
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正20141756 Chen Ruige(Mathematical College,China University of Geosciences,Beijing100083,China);Zhou Xun Numerical Simulation of Groundwater Level Fluctuation in a Coastal Confined Aquifer with Sloping Initial Groundwater Level Induced by the Tide(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(7),2013,p.1099-1104,6 illus.,16 refs.) Key words:confined water,groundwater level 相似文献
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正20141408 Cai Jia(Institute of Geology,Chinese Academy of Geological Sciences,Beijing100037,China);Liu Fulai Petrogenesis and Metamorphic P-T Conditions of Garnet-Spinel-Biotitebearing Paragneiss in Danangou Area,Daqingshan-Wulashan Metamorphic Complex Belt(Acta Petrologica Sinica,ISSN1000-0569,CN11-1922/P,29(7), 相似文献
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正20142386An Guoying(China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China)Application of Satellite Remote Sensing in Regional Hydrogeological Investigation:Taking Cenozoic Strata in Wenquan Sheet(1∶250 000)of Karakoram Range as an Example(Geosci- 相似文献
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正20141016An Chengbang(Key Laboratory of Western China’s Environmental Systems,Ministry of Education,Lanzhou University,Lanzhou 730000,China);Zhao Yongtao Lake Records during the Last Glacial Maximum from Xinjiang,NW China and Their Climatic Impli- 相似文献
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正20141538 Cao Qing(School of Earth Sciences and Engineering,Xi’an Petroleum University,Xi’an 710065,China);Zhao Jingzhou Characteristics and Significance of Fluid Inclusions from Majiagou Formation,Yichuan Huangling Area,Ordos Basin(Advances in Earth Science,ISSN1001-8166,CN62-1091/P,28(7),2013,p.819-828,7 illus.,3 tables,43 refs.) 相似文献