一、前言用样件浇铸锌合金弯曲模,可使制模工艺简化,制模周期缩短,但锌合金铸模温度高,样件易变形;锌合金材料冷凝收缩率较大,铸模后型腔尺寸发生变化。只要解决这两个问题,铸模质量才有保证。现以我厂大客车后顶内纵梁零件为例(图1),简述我们在制作锌合金弯曲模中的体会。 First, the preface Sample casting zinc alloy bending die, making the molding process is simplified, the molding cycle is shortened, but the zinc alloy mold temperature is high, sample deformation; zinc alloy material condensation shrinkage rate, the mold cavity size Change. As long as these two issues are solved, mold quality is guaranteed. Now I plant the rear of the rear passenger car longitudinal beam as an example (Figure 1), a brief description of our experience in the production of zinc alloy bending mold.