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冶金部委托湖南省冶金局、湖南省有色金属工业公司联合召开的YG105矿用硬质合金鉴定会于1982年5月20日至23日在株洲市举行。根据冶金部文件精神,株洲硬质合金厂在冶金部钻具攻关中承担了矿用硬质合金的研究任务。自1973年以来,由小型试验到扩大试验和工业试验,先后为协作单位和生产厂家提供70余吨不同规格的YG105合金。由于该合金是采用“三高一钽”,即高纯三氧化钨,经高温还原,又经高温碳化,并添加了微量碳化钽所组成
Ministry of Metallurgy commissioned the Hunan Provincial Metallurgical Bureau, Hunan Nonferrous Metals Industry Company jointly held YG105 Mining Cemented Carbide Identification will be May 20, 1982 to 23 in Zhuzhou City. According to the spirit of the Ministry of Metallurgical Documents, Zhuzhou Carbide Plant in the Metallurgical Division drilling research undertaken mine hard alloy research tasks. Since 1973, from small to extended tests and industrial tests, the company has successively provided more than 70 tons of YG105 alloy with different specifications for the cooperation units and manufacturers. As the alloy is the “three high and one tantalum”, that is, high purity tungsten trioxide, the high temperature reduction, but also by high temperature carbonization, and added a trace of tantalum carbide composition