Shanghai Daoqin Plastics Co., Ltd.

        1, mold parts 锻造 目

         mold parts material 准备时锻造 目 has 两:

        (1) obtain 一定 几何形状;

        (2) improvement material property can and processing properties.

         mold in generally structural parts (如 solid sheet/plate, material sheet/plate and other)以第一目 is 主, main/primary as parts (如凸模, and other)则两 project has. through obtain block material 几何形状 methods, its active property strong/high. basic can meet/satisfy block material specifications and dimensions more property requirements, tool has 节省材 material, shrink short and other advantages.

         for/regarding mold in main/primary parts, due to its hot 处理, quality and use lifespan and other requirements, also need through improvement Raw Materials property can. through make material 组织致密, uniform, make its toward property obvious and other. this 时 锻造 not only is 改变几何形状, more important is need attention/notes methods. using/adopting toward 镦拔, toward 镦拔, toward and for 角线锻造 and other.

        2, lower material dimensions 确定原则

        锻坯 Raw Materials generally is 圆钢, combined selection 圆钢直径 and lower material long degree is 锻造毛坯 process in important step/link. its 确定原则 can nano lower:

        (1)体积 versus and other, parts 毛坯 体积 add upper process in metal loss rate and other Raw Materials (圆钢) lower material 体积.

        (2) metal loss rate δ即锻造 add hot generate oxidation 皮, carbon and other loss consumption rate. generally 取δ=0.05～0.10. increase more, 锻造不平 degree large, material carbon toward large large value.

        (3) Raw Materials long ratio (L/D)不 can large, generally 取L/D=1.5～2.5, most large ultra- 3. L/D太 large, parts process in can can bending, and other defect.

        (4)计算 rear Raw Materials 直径必 must 按国家 standards specifications 进行圆整, most good is factory 库房里现存 or market upper supply specifications.

        3, lower material dimensions methods

         according to above can below/following 计算公式 and methods:

        首先, 按原则(1) can V坯=V锻(1+δ)%

        式 in, V锻 is rear block 体积, is mold parts outer dimensions add upper processing amount rear 体积. V坯 is Raw Materials lower material 体积.