一、前言半熔融状态或凝固成型后的粘塑性状态的金属加工很早就有人尝试了。但是,至今还未见到成熟的技术,仍在研究之中。半熔融状态金属加工,就是将液相、固相共存的金属坯料,通过加载或加压使其变形、流动和结合,以得到形状、尺寸和性能都符合要求的制品。这是一种新的金属压力加工 I. INTRODUCTION Metalworking in the semi-molten state or the viscoplastic state after solidification has long been attempted. However, so far, no mature technology is still being studied and still under study. Semi-molten metal processing, is the liquid phase, the solid phase coexistence of metal billets, by loading or pressure to deformation, flow and combination of shape, size and performance to meet the requirements of the products. This is a new metal press working