回顾了自由锻造液压机的发展历程,详细介绍各发展阶段自由锻造液压机的类型和技术特点.比较液压油和纯水两种压机工作介质的理化特性,分析了纯水自由锻造液压机的技术优势,为自由锻造液压机的发展提供了研究方向.%The development course of the free forging hydraulic press is reviewed in the paper. The type and technical features of the free forging hydraulic press in various development stages are introduced in details. The technical advantages of pure water free forging press are systematically analyzed based on' comparison of the chemical and physical properties of two working substances ( pure water and hydraulic oil). The research directions for development of the free forging hydraulic press are recommended.
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