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常见加工工艺、问题及解决方法
问题与解决方案
增强增韧PBT加工条件
增强PBT典型加工条件
High Glow Wire Ignition Temperature PBT Processing Conditions
PBT高灼热丝料典型加工条件
PBT Processing Conditions
PBT典型加工条件
PET Processing Conditions
PET典型加工条件
PA Processing Conditions
PA典型加工条件
ABS Processing Conditions
ABS典型加工条件
PC Processing Conditions
PC典型加工条件
PP Processing Conditions
PP典型加工条件
Injection Problem And Resolvent
工程塑料注射成型过程中易出现的故障及排除建议:
缩孔
dimple
缩短浇道长度;
reduce runner length
加大喷嘴口径;
increase nozzle dia
扩大浇口及流道;
increase gate and runner
降低料温，提高模温;
reduce material temp,rise mold temp
降低注射速度;
reduce injection speed
加大注射压力;
increase injection pressure
检查树脂是否干燥彻底;
confirm the materrial no water
检查有无污染物。
check whether it contain contamination
表面凹陷
surface lake
检查树脂是否彻底干燥;
confirm the material no water
加大注射压力及注射速度;
rise the injection presure and speed
扩大浇口，缩短浇口长度;
increase gate dia,reduce gate length
加大喷嘴口径;
increase nozzle dia
降低树脂温度;
reduce material temp
提高模温;
rise mold temp
扩大注道及流道。
increase the runner
熔合痕
weld mark
加大注射压力及注射速度;
rise injection pressure and speed
升高树脂温度;
rise material temp
检查树脂是否彻底干燥；
confirm the material no water
提高模温;
rise mold temp
增加排气口数目;
add the vent number
加大制件壁厚。
increase the products thickness
翘曲变形
distortion
加大注射压力及注射速度；
rise injection pressure and speed
延长注射保压时间和冷却时间；
longer cold time and packing pressure time
缩短浇道长度；
reduce runner length
增大浇口尺寸，改变浇口位置；
increase gate size and change Its place
降低料温；
reduce material temp
减少模具二面的温差；
keep two mold similar temp
注意玻璃纤维的方向。
attention the glass fiber way
制件发脆
products fragility
延长干燥时间;
longer dry time
缩短物料在机简内的停留时间;
reduce material stay time in the cylinde
降低回料掺用比例;
use lower recycle material
降低料温;
reduce material temp
降低背压
reduce back pressure
加大料口；
increase gate size
降低螺杆转速;
reduce screw speed
在锐角处增设弧度；
increase its radian
制件壁厚尽可能均匀。
keep the products thickness equably
表面缺乏光泽
surface no lighting
提高料温及模具;
increase material and mold temp
加大注射压力;
increase injection pressure
延长烘干，去除水份;
longer dry time
能选用玻璃纤维含量低的产品;
choose lower glass fiber contain plasstic
阻燃产品选用无析出系列产品;
choose no separate-out material
制件模糊
products sticking
降低注射时间、压力、速度;
reduce injection time, speed and pressure
降低模具，料筒及喷嘴的温度;
reduce mold,cylinder and nozzle temp
调整保压补缩料量;
adjust material quantity of back pressure
检查模具表面是否粗糙;
check the mold surface，keep smooth
检查脱模斜度是否合适;
check the knock-out angle
选用适当的脱模剂。
choose better mold release
飞边
flash
降低料筒及模具的温度；
reduce cylinder and mold temp
降低注射压力；
reduce injection pressure
增大锁模力；
rise clamping force
减小注射量及注射速度;
reduce injection speed
检查模具结构及排气孔是否过深。
check whether the air vent toodeep
颜色不均匀
colornoequably
检查树脂是否干燥合度；
confirm the material no water
扩大排气口;
rise air vent size
提高模具温度；
rise mold temp
改进模具设计；
change the mold conformation
升高树脂温度。
rise material temp
检查进料有否杂物；
check whether it has contamination
降低螺杆速度及背压。
reduce screw speed and back pressure
表面开裂或有裂痕
surface crack
提高模具温度；
rise mold temp
降低注射压力及速度；
reduce injection pressure and speed
降低保压和保压时间；
reduce packing pressure and its time
增大合模力及制品顶出幅度;
rise clamping force
延长冷却时间;
longer cold time
减少填料及回料比划;
use lower recycled material
加足够拔梢，并使用脱模剂;
use mold release
改变顶出方式(如用空气顶出)。
change knock-out way
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