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improve/increase thin wall injection molding processing degree 4点 tips/techniques
plastics parts application scope 越 越广泛, from simple tool, tool to complex machine 械零部 parts, electronics product outer housing/shell and other has use to plastics parts, however for/regarding electronics product outer housing/shell and other density requirements relatively high plastics parts, in injection molding manufacturing from mold manufacturing 开始就 need heavy its degree requirements.
而 in plastics parts injection molding processing stage/phase degree which factors 决定? also how to improve/increase thin injection molding processing parts degree 呢?
1. 关模 pressure: upper large plastics 射入模 inner pressure, 以不出 flash/burrs is 基准.
2. pressure and speed degree has separation same as used for inner is make raw materials 进入模 inner can uniform, 彻底, amount 充满各角落. low short 射, sink marks, high has 毛头, saturated, mold sticking, 烧焦, easy loss mold and internal stress high and other defect phenomenon.
3. speed degree fast slow is raw materials in mold inner and formed product in 之状况, fast has flash/burrs, saturated, 烧焦, slow 就会出现 short 射, sink marks, combined defect easy and other.
4. temperature degree raw materials different, temperature degree same, low 熔胶不透而导致 color 不均, formed product internal stress increase large. temperature degree low increase pressure high, can can 会引起 screw fracture, high, product has flash/burrs, also cooling generate temperature 差, shrinkage. raw materials separation understanding, 变黄, color, easy fracture. cooling time long, gas easy 排出.
