为适应精密、高温、难熔等高合金材料的锻造开坯,上海钢铁研究所设计研制了160吨精锻机。精锻机的特点是坯料四周同时承受锻打,使金属变形处于三向应力状态,产生径向压缩,轴向延伸。有利于避免产生锻造裂纹,改善锻件表面质量,特别适用于加工难于加工的高合金材料。坯料每分钟承受锻打次数达560—600次,每次变形量小,金属流动线路短,摩擦阻力小,因而动 To meet the precision, high temperature, refractory and other high alloy materials forging billet, Shanghai Institute of Iron and Steel designed and manufactured 160 tons of precision forging machine. Precision forging machine is characterized by billets at the same time withstand forging around, the metal deformation in the three-state stress, resulting in radial compression, axial extension. Help to avoid forging cracks, improve the surface quality forgings, especially for processing difficult to process high alloy materials. Billets per minute bear the number of 560-600 times, each deformation is small, the metal flow line is short, the friction resistance is small, thus moving