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山东铝合金压铸制品产生透明的缘由及处理方法!

来源:http://www.jnhjgs.cn     发布时间:2019-11-04 15:33:30    点击:

  原因:裂缝,银色条纹,破裂的聚苯乙烯,有机玻璃碎片,有时在光中闪烁的银色条纹。这些银色的线条也被称为斑点或裂缝。这是因为拉伸应力的直线型方向会产生应力,并且聚合物分子的重活性取向和无取向部分的折叠速率的差异被显示出来。
  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.
  解决方案:
  Solution:
  (1)消除气体和其他杂质的干扰,使塑料丰富而枯燥。
  (1) eliminate the interference of gas and other impurities to make the plastic rich and dry.
  (2)降低料温,分阶段调节料筒温度,适当提高模具温度。
山东铝合金压铸
  (2) reduce the material temperature, adjust the material barrel temperature in stages and increase the mold temperature properly.
  (3)增加注射压力,降低注射速度。
  (3) increase injection pressure and decrease injection speed.
  (4)增加或减少预成型背压,降低螺杆转速。
  (4) increase or decrease the back pressure of preform and decrease the screw speed.
  (5)改善流道及空腔的排气状况。
  (5) improve the exhaust condition of flow channel and cavity.
  (6)清除可能堵塞的喷嘴、流道和浇口。
  (6) remove nozzle, runner and gate that may be blocked.
  (7)缩短成型周期,消除银行道德败坏后退火:持有聚苯乙烯15分钟在78°c,或把它1小时50°c,并持有的聚碳酸酯几分钟后加热到超过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.
  以上是山东铝合金压铸厂家为大家介绍的相关内容,想要了解更多内容,欢迎访问网站:http://www.jnhjgs.cn
  The above is the relevant content introduced by Shandong Aluminum Alloy Die Casting Factory. For more information, please visit the website: http://www.jnhjgs.cn
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