Shanghai Daoqin Plastics Co., Ltd.

in injection molding parts mold design and molding engineering conditions setting upper, important is not only 维 持适 combined temperature degree, also need can let its uniform distribution. non-uniform mold temperature distribution, 会导致不均一 shrinkage and internal stress, make formed product easy generate deformation and warpage. mold temperature high low effect/influence plastics in mold cavity inner hard speed degree, low make relatively difficult and 未适当 shrinkage (or again crystallization)即 hard 化, make molding product has relatively more and hot force 之残留; high easy flash/burrs and need relatively long cooling time. improve/increase mold temperature can below/following 效果: 1. increase formed product crystallization degree and relatively uniform structure. 2. make formed shrinkage relatively separation, rear shrinkage decrease/reduce. 3. improve/increase formed product strong/high degree and heat resistant property. 4. decrease/reduce internal stress 残留, separation toward and deformation. 5. decrease/reduce 充填时 flow retardant resistant, reduce pressure loss 失. 6. make formed product appearance gloss relatively low. 7. increase formed product flash/burrs machine 会. 8. increase gate and decrease/reduce gate 部位凹陷 machine 会. 9. decrease/reduce combined obvious degree. 10. increase cooling time. Shanghai plastics has company