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由鞍钢齐大山铁矿与北京钢铁学院共同研制的DJ-1型碟簧减振器,是用碟形簧做减振元件的新型牙轮钻机减振装置。受冶金工业部科技司委托,鞍钢矿山公司邀请了东北工学院、中南矿冶学院、吉林工业大学、太原重型机械学院等单位于1985年8月2日对DJ-1型碟簧减振器进行鉴定。各单位代表们一致认为:
DJ-1 type disc spring shock absorber jointly developed by Anshan Iron and Steel Qidashan Iron Mine and Beijing Institute of Iron and Steel is a new type of cone-roller vibration damping device with disc spring as damping element. Commissioned by the Ministry of Science and Technology, Ministry of Metallurgical Industry, Anshan Iron and Steel Company invited the Northeast Institute of Technology, Central South Mining and Metallurgy Institute, Jilin University of Technology, Taiyuan Heavy Machinery Institute and other units on August 2, 1985 on the DJ-1 disc spring shock absorber Identification. Representatives of all units agreed that: