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经过十年的研制,一种新型的交流电动机调速装置在德兴铜矿投人使用。 1980年以来,德兴铜矿先后从国内外购进了十三台三种类型的穿孔钻机。由于行业竞争和技术封锁,有些关键的零部件由厂家控制和供给。如美国BE公司制造的钻机电气系统价值20万美元,差不多是整台钻机的三分之一。进口零件昂贵、紧缺,常常是“远水难救近火”,影响矿山生产。从1980年起,德兴铜矿教授级高级工程师吴湘汉结合实际,精心研究,设计出一套适合国情的交
After ten years of development, a new type of AC motor speed control device is put into use at Dexing Copper Mine. Since 1980, Dexing Copper Mine has purchased 13 sets of three types of piercing rigs from home and abroad. Due to industry competition and technological blockade, some key components are controlled and supplied by the manufacturers. Such as the United States BE company drilling rig electrical system worth 200,000 US dollars, almost one-third of the rig. Import parts are expensive and scarce, often “near water is difficult to rescue near fire”, affecting the mine production. Since 1980, Wu Xianghan, a professor-level senior engineer at Dexing Copper Mine, has studied and designed a suit of practical national conditions