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模具加工注塑件时商品总体变脆的缘故?

来源:    发布时间:2019-05-17 14:09:29    点击:

  模具生产注塑件时产品整体发脆的原因
  Reasons for brittleness of the whole product in the production of injection moulds1.注塑机射出和保压压力不足;
  1. Insufficient injection and holding pressure of injection moulding machine;2.背压太小、原料不够扎实;
  2. The back pressure is too small and the raw materials are not solid enough.
  3.背压太大,剪切、磨擦热量增加;
  3. When the back pressure is too high, the heat of shearing and friction increases.
  4.射速太慢,未充分结晶;
  4. Shooting speed is too slow to crystallize sufficiently.
  5.模温太高,原料过火、分解、变质;
  5. Mould temperature is too high, raw materials are overheated, decomposed and deteriorated.
  6.模温太低,未充分结晶;
  6. Mould temperature is too low to crystallize sufficiently.
  7.射出、保压时间不足;
  7. Shortage of injection and holding time;8.注塑机停机时间太长了和注塑周期太长;
  8. The downtime of injection moulding machine is too long and the injection moulding cycle is too long.
  9.储料时间太长;
  9. Storage time is too long.
  10.二级回料在新料里添加比例太多;
                                     济南模具
  10. The proportion of secondary recycling in new materials is too large.
  11.原料强度、韧性不够,粘度不够;
  11. The strength and toughness of raw materials are not enough and the viscosity is not enough.
  12.添加剂不合理,或添加太多;
  12. unreasonable additives or too much additives;13.原料未充分烘干;
  13. Inadequate drying of raw materials;
  14.产品内部结构有些地方太厚,有些地方太薄,不均匀,进料地方考虑不合理。
  14. The internal structure of the product is too thick in some places, too thin and uneven in some places, and the feeding place is unreasonable.
  15.模具进料不均匀,冷料井不够;
  15. Inhomogeneous feeding of mould and insufficient cooling well;16.产品壁厚太薄;
  16. The product wall thickness is too thin.
  17.注塑机温度时高时低,不稳定;
  17. The temperature of injection moulding machine is high, low and unstable.
  18.注塑机料管没清理好;
  18. The material pipes of the injection moulding machine are not cleaned up properly.
  19.顶出不合理,塑体应力增加,产生破裂;
  19. If the ejection is unreasonable, the stress of the plastic body increases and the fracture occurs.
  20.塑料件模具冷却回路没排好。
  20. The cooling circuit of plastic parts die is not arranged properly.
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