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山东模具加工厂为了解决增强料工艺弊病,在成型时应注意下列事项。Shandong mold processing plant in order to solve the reinforcement process ills, in molding should pay attention to the following matters.
1.山东模具加工宜用高温、高压、高速注射。Shandong mold processing with high temperature, high pressure, high speed injection.
2.塑胶模具模温宜取高(对结晶性料应按要求调节),同时应防止树脂、玻纤分头聚积, 玻纤外露及局部烧伤。Plastic mold temperature should be high (the crystalline material should be adjusted according to requirements), at the same time should be to prevent the resin, glass fiber and glass fiber separately accumulate, local burn.
3.保压补缩应充分。Pressure retaining and shrinkage should be fully.
4.山东模具加工塑件冷却应均匀。Shandong mold processing plastic parts should be uniform cooling.
5.料温、模温变化对塑件收缩影响较大,温度高收缩大,保压及注射压力增大,可使收缩变小但影响较小。Material temperature and mold temperature change have a greater impact on the plastic parts shrinkage, high temperature shrinkage, pressure and injection pressure increases, can shrink smaller but less affected.
6.由于增强料刚性好,热变形温度高可在较高温度时脱模,但要注意脱模后均匀冷却。Due to the high rigidity of the reinforcing material, the hot deformation temperature can be released at high temperature, but the uniform cooling should be paid attention to.
7.应选用适当的山东模具加工脱模剂。Should choose the appropriate Shandong mold processing release agent.
8.山东模具加工宜用螺杆式注射机成型。尤其对长纤维增强料必须用螺杆式注射机加工,如果没有螺杆式注射机则应在造粒后象短纤维料一样才可在柱塞式注射机上加工。Shandong mold processing should use screw injection molding machine. Especially for long fiber reinforced material must use screw injection molding machine, if there is no screw injection molding machine should be like fiber like material after granulation can be processed in the plunger type injection machine.