Drawing die layout of the operation properties - Tianchang Haitao wiredrawing mold factory

Drawing die core layout according to the work of nature can be divided into "five interval import area, smooth area, work area, sizing zone, export zone". Drawing die diameter generalization is very important, it determines the required tightening wire pulling force, and the influence of residual stress after drawing wire. The effect of core districts are: import area, convenient threading and prevent the steel imports from the direction of scratch wire drawing die; smooth area, after the wire easy to smooth agent; operation area, is the first some die hole, deformation process of steel wire here, is the original section is reduced to the cross-sectional dimension of demand. In the drawing conical metal, operation area of metal volume occupied space is a truncated cone, the space known as the deformation zone. Cone half angle α region within the operation (also known as the die hole angle) is used to determine the size of the first drawing force; sizing area of effect is obtained by the exact scale drawing wire; export area is used to avoid the steel export instability and scratching the wire surface