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直径50毫米十字(Ⅰ)、(Ⅱ)型和弹头九齿波形螺纹钎头,是武汉地质学院钎头科研组和铁道部隧道局科研所,受铁道部京广复线大瑶山隧道工程委托,与中南矿冶学院粉冶厂、成都探矿机械厂、广济长江工具厂、贵阳钢厂等兄弟单位合作,为引进设备瑞典Atlas Copco公司PROMEC TH286型四臂液压凿岩台车 Cop1038HD 重型液压凿岩机,研制成功的配套钎头,其外貌详见94页图(一)、(二)。
Diameter of 50 mm cross (Ⅰ), (Ⅱ) type and warhead nine teeth wave shape drill bit, is the Institute of Geology, Wuhan Institute of Science and Technology and the Ministry of Railways Tunnel Bureau, commissioned by the Ministry of Railways Jinguang Double Dayuoshan tunnel project commissioned, With the cooperation of Zhongnan Mining and Metallurgical Institute Powder Metallurgy Factory, Chengdu Prospecting Machinery Factory, Guangji Changjiang Tools Factory and Guiyang Steel Works, the company introduced the Cop1038HD heavy-duty hydraulic rock drill with the PROMEC TH286 four-arm hydraulic drilling rig Sweden Atlas Copco, The successful development of the supporting bit, the appearance of see 94 (1), (b).