分析了金属注射物料的流变学规律，阐明了它的非牛顿性质。研究了注射物料的圆管流动和平缝流动，导出了流速、最大流速、平均流速和流量的理论计算式，确定了流速和流量与流变学性质、注射压力和模腔几何参数之间的关系，为金属注射成型工艺和模具设计提供了依据。 The law of rheology of metal injection material was analyzed and its non-Newtonian character was clarified. The tubular flow and flat-slit flow of injection material were studied. The theoretical calculation formulas of flow velocity, maximum flow velocity, average flow velocity and flow rate were derived. The relationship between flow velocity and flow rate, rheological properties, injection pressure and cavity geometry parameters , Provides the basis for the metal injection molding process and mold design.