四、导流模的设计在模具设计中,是以静压力作为计算基础的,但模具在使用中所承受的是随机变化的动压力载荷。这种随动压力载荷往往就是造成金属流动不均匀、挤压中模具突然堵模的主要原因,也是产生波浪、扭拧和弯曲的主要因素。我们知道,决定模具使用质量和使用寿命的主要因素之一是金属相对于型孔产生塑性变形的突破挤压次数。为此,人们研究采用了一种所谓的连续挤压方法,其原理是,在挤压过程中,使金属在一定的,可调整的区域内变形,利用其塑性变形抗力特性、产生阻止突变 Fourth, the design of diversion mold design in the mold, static pressure is calculated as the basis, but the mold in use is subjected to a random change of dynamic pressure load. This dynamic pressure load is often caused by uneven metal flow, extrusion die suddenly blocked the main reason, but also generate waves, twisting and bending of the main factors. We know that one of the main factors determining the quality and service life of the mold is the number of break-out times that the plastic will deform plastically with respect to the holes. To this end, people study the use of a so-called continuous extrusion method, the principle is that in the extrusion process, the metal in a certain, adjustable area deformation, the use of its plastic deformation resistance characteristics, to produce mutations to prevent