Shanghai Daoqin Plastics Co., Ltd.

         injection molding speed degree ratio/proportion control already by injection molding machine manufacturing 商广泛 using/adopting. although electrical control injection molding speed degree separation control system already in, due to related material has 限, this type of machine advantages very less to 发挥. will system application more speed degree injection molding advantages, 并概括 introduction its in remove short 射, gas, sink marks and other products defect upper applications.

        射胶 speed degree and products quality 密切关系 make it formed is injection molding key/critical parameters. through filling speed degree separation 段 开始, in 间, 终, achieve 一 设置点 to 另一 设置点 light slip 渡, can ensure stability melt surface speed degree manufacturing 出期望 separation 子取问 and most small internal stress.

        我们建议 using/adopting below/following this type of speed degree separation 段原则:

        1)流体 surface speed degree is 常数.

        2)应 using/adopting fast speed 射胶.

        3)射胶 speed degree 设置应考虑 to in 临界区域(如 runner) fast speed meanwhile in water decrease slow speed degree.

        4)射胶 speed degree ensure mold cavity rear 立即停止以 anti 止出现 filling, flash, and residual stress and other.

        5) in grade injection can solution lower can use more grade injection.

         setting speed degree separation based on must to mold 几何形状, its it flow made and unstable factors. speed degree setting must for injection molding process and material Knowledge has relatively 清楚 认识, 否则, products quality will difficult control. is melt speed difficult 以直接测 amount, can through amount screw front speed degree, or type pressure 间接推算出(确定止逆阀没 has 泄漏).