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2002年,我国的原镁、镁合金、粒状镁产量及镁产品出口量均有所增长,例如,原镁产量2.68×105 t;镁合金产量6.7×104 t;粒状镁产量6.78×104 t;镁产品出口量达2.09×105 t;原镁产能达4.348×105 t。2003年是我国镁工业又一新的转折点。我国是世界产镁大国,据不完全统计,2003年1月 相似文献
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节能减排是我国工业生产部门当前最重要的工作之一,钢铁生产过程的节能减排,因其工业规模巨大、污染严重和耗能多而具有更重要的意义。北京科技大学从建立生态化工业的角度,经过多年的研究,发现在“煅烧石灰一氧气转炉炼钢”这条工业链上,存在着大量的资源能源浪费,为解决这一问题,提出了“一种在氧气转炉中用石灰石代替石灰造渣炼钢”的新方法,一改几十年来在石灰窑中煅烧石灰, 相似文献
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阐述了我国镁资源的储量,通过对目前中国和世界的镁工业现状分析,认识到生产高附加值镁及镁合金的重要性。利用我国的资源及政策优势,使国内镁的生产及在建企业向科技含量更高的高附加值的镁、镁合金产品延伸。 相似文献
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Mr. N. Varahraam Dr. Eng. O. Yanagisawa 《International Journal of Cast Metals Research》2013,26(2):94-102
Equipment for the in-stream treatment of ductile iron has been adapted for gravity-diecasting. The treatment unit consists of a pouring basin, reaction chamber, and a reservoir for holding treated iron. The device is highly mobile in so much that it can be transferred from furnace to successive dies and back again, allowing consecutive pouring. The authors have studied the effect of reaction chamber design and nodularising-alloy type on the microstructure of cast specimens, using three types of chamber design and three types of nodulariser at different temperatures. The results indicate that a carbide-free structure with a high nodule count of up to 1500 n/mm2 within the as-cast structure of a diecast rod specimen of 30 mm dia. can be achieved using this treatment equipment, when employing suitable nodularising alloy and process chamber design. 相似文献