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山東鋁合金壓鑄制品產生透明的緣由及處理方法!

刮刮乐2000 www.yfrmbf.com.cn 來源:    發布時間:2019-11-04 15:33:30    點擊:

  原因:裂縫,銀色條紋,破裂的聚苯乙烯,有機玻璃碎片,有時在光中閃爍的銀色條紋。這些銀色的線條也被稱為斑點或裂縫。這是因為拉伸應力的直線型方向會產生應力,并且聚合物分子的重活性取向和無取向部分的折疊速率的差異被顯示出來。
  Causes: cracks, silver stripes, broken polystyrene, fragments of plexiglass, sometimes silver stripes that flash in light. These silver lines are also known as spots or cracks. This is because the linear direction of tensile stress will produce stress, and the difference of folding rate between the reoriented and non oriented parts of polymer molecules is shown.
  解決方案:
  Solution:
  (1)消除氣體和其他雜質的干擾,使塑料豐富而枯燥。
  (1) eliminate the interference of gas and other impurities to make the plastic rich and dry.
  (2)降低料溫,分階段調節料筒溫度,適當提高模具溫度。
山東鋁合金壓鑄
  (2) reduce the material temperature, adjust the material barrel temperature in stages and increase the mold temperature properly.
  (3)增加注射壓力,降低注射速度。
  (3) increase injection pressure and decrease injection speed.
  (4)增加或減少預成型背壓,降低螺桿轉速。
  (4) increase or decrease the back pressure of preform and decrease the screw speed.
  (5)改善流道及空腔的排氣狀況。
  (5) improve the exhaust condition of flow channel and cavity.
  (6)清除可能堵塞的噴嘴、流道和澆口。
  (6) remove nozzle, runner and gate that may be blocked.
  (7)縮短成型周期,消除銀行道德敗壞后退火:持有聚苯乙烯15分鐘在78°c,或把它1小時50°c,并持有的聚碳酸酯幾分鐘后加熱到超過160°c。
  (7) shorten the molding cycle and eliminate the bank's moral corruption after annealing: hold polystyrene at 78 ° C for 15 minutes, or heat it to over 160 ° C for 1 hour and 50 ° C for a few minutes.
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  The above is the relevant content introduced by Shandong Aluminum Alloy Die Casting Factory. For more information, please visit the website: //www.yfrmbf.com.cn
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