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山東模具加工產生時出現故障是什么表現?

來源:    發布時間:2019-12-13 18:36:48    點擊:

  模具失效由于塑料零件的表面是模具型腔表面的復制品,如果模具表面有表面缺陷如疤痕、腐蝕、微孔等,則將其復制到塑料零件的表面會導致光澤度差。如果空腔表面油膩、潮濕,破乳劑使用過多或不當選擇,也會使塑料表面發黑。因此,模具型腔的表面應具有良好的光潔度,更好使用拋光或鍍鉻的表面。腔體表面必須保持清潔,油漬和水漬應及時清除。脫模劑的種類和用量應適當。
  Mold failure because the surface of the plastic part is a replica of the surface of the mold cavity, if the surface of the mold has surface defects such as scars, corrosion, micropores, etc., copying them to the surface of the plastic part will lead to poor glossiness. If the surface of the cavity is greasy and wet, excessive use of demulsifier or improper selection will also make the plastic surface black. Therefore, the surface of the mold cavity should have a good finish, and it is better to use a polished or chrome plated surface. The cavity surface must be kept clean, and oil and water stains shall be removed in time. The type and dosage of release agent shall be appropriate.
山東模具
  模具溫度對塑料制品的表面質量也有很大的影響。一般來說,不同類型的塑料在不同的模具溫度下,其表面光澤差異很大。模具溫度過高或過低都會造成光澤度差。如果模具溫度過低,熔體與型腔接觸后立即凝固,這將降低型腔表面的再現性。為了增加光澤度,可以增加模具溫度。更好在模具冷卻回路中使用溫水,以便在型腔內迅速傳遞熱量,避免延長成型周期。該方法還可以減少模具中的殘余應力。另外,汽提坡過小,斷面厚度過陡,肋部過厚,澆口、澆道截面過小或變化突然。亂流、模具排氣不良等模具故障會影響塑件的表面質量,導致表面光澤度差。
  Mold temperature also has a great influence on the surface quality of plastic products. Generally speaking, the surface gloss of different types of plastics varies greatly under different mold temperatures. Too high or too low mold temperature will cause poor glossiness. If the mold temperature is too low, the melt solidifies immediately after contacting the cavity, which will reduce the reproducibility of the cavity surface. In order to increase the glossiness, the mold temperature can be increased. It is better to use warm water in the cooling circuit of the mould, so as to transfer heat rapidly in the mould cavity and avoid prolonging the forming cycle. The method can also reduce the residual stress in the die. In addition, the stripping slope is too small, the section thickness is too steep, the rib is too thick, and the section of gate and sprue is too small or changes suddenly. The surface quality of plastic parts will be affected by mold faults such as turbulent flow and poor mold exhaust, which will lead to poor surface gloss.
  以上是山東模具加工生產廠家為大家介紹的相關內容,想要了解更多內容,歡迎訪問網站:http://www.hfonsu.icuThe above is the relevant content introduced by Shandong mold processing manufacturer for you. To learn more, please visit the website: http://www.hfonsu.icu
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