太原重型机械学院与太原机车车辆工厂经过深入的调查研究 ,在国内率先研制开发了 1 5ｋＪ悬臂式自由锻电液锤 ,对 0 .5ｔ老式悬臂式蒸—空自由锻锤成功进行了换头改造。该产品投入使用三年多后 ,于 1 999年 1 2月通过了山西省科委组织的成果鉴定。鉴定委员会对该产品结构、原理 Taiyuan Institute of Heavy Machinery and Taiyuan Locomotive and rolling stock factory through in-depth investigation and research, pioneered the development of the domestic 15kJ cantilever free forging electro-hydraulic hammer on the 0 .5t old cantilever steam-air free forging hammer the successful replacement transformation . After the product was put into use for more than three years, it passed the appraisal of achievements organized by Shanxi Science and Technology Commission in January, 1999. Identification Committee of the product structure, principles