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如何解决注塑制品收缩凹陷的现象?

来源:http://www.sdlqmj.com 日期:2019-07-18 发布人:admin 浏览次数:
注塑制品在成型过程中,制品收缩凹陷是比较常见的现象。一旦出现这种情况,对产品的质量是有非常大的影响!下面济南注塑模具厂家就为大家总结几条解决类似情况的措施!
In the process of injection moulding, shrinkage depression is a common phenomenon. Once this happens, it has a great impact on the quality of the product! The following Jinan injection mold manufacturers for you to sum up a few measures to solve similar situations!
(1)消除气体及其它杂质的干扰,对塑料充分干燥。
(1) Eliminate the interference of gas and other impurities, and fully dry the plastics.
(2)降低料温,分段调节料筒温度,适当提高模温。
(2) Reduce the material temperature, adjust the barrel temperature in stages and raise the mould temperature appropriately.
(3)增加注射压力,降低注射速度。
(3) Increase injection pressure and decrease injection speed.
(4)增加或减少预塑背压压力,减少螺杆转速。
(4) Increase or decrease the back pressure of pre-plastics and reduce the screw speed.
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(5)改善流道及型腔排气状况。
(5) Improve the exhaust condition of runner and cavity.
(6)清理射嘴、流道和浇口可能的堵塞。
(6) Clean up possible blockage of nozzle, runner and gate.
(7)缩短成型周期,脱模后可用退火方法消除银纹:对聚苯乙烯在78℃时保持15分钟,或50℃时保持1小时,对聚碳酸酯,加热到160℃以上保持数分钟。
(7) Shorten the moulding period, and annealing can be used to eliminate the craze after demoulding. For polystyrene, the craze can be kept for 15 minutes at 78, or for 1 hour at 50, and for polycarbonate, the craze can be kept for several minutes when heated to 160.
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Thank you for your reading and watching. The wonderful content of this article comes from: Jinan Injection Mold, we will have more wonderful content to continue to show you. For more details, please click: http://www.sdlqmj.com.

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