wiper die meaning in Chinese

回转弯管成形模

Its reliability has been tested though examining . the influence laws of mould structure , including wiper die and the style , size and installed position of mandrel , have been studied . combined with the theoretical analysis of perfect pure bending , the tendency of relative bending radius r / d and relative wall thickness t / d to one of the major quality target - the maximum wall thickness reduction ratio is also studied
通过数值模拟研究获得了包括防皱块和芯棒形式、尺寸和安装位置在内的模具结构对制件成形质量的影响规律；结合对理想纯弯曲的理论分析，研究获得了相对弯曲半径r / d 、相对壁厚t / d对制件主要质量指标之一的最大壁厚减薄率的影响趋势和大小。