模具注塑成型过程中可能会遇到这样和那样的问题，有可能遇到的缺陷会是什么呢？笔者告诉你，模具注塑成型过程中有可能遇到缺陷如下：
Mold injection molding process may encounter this and that problem, what are the possible defects? The author tells you that the following defects may be encountered in the process of mold injection molding:
注塑件缺陷的特征注塑过程不完全，因为模腔没有填满塑料或注塑过程缺少某些细节。
The injection molding process is incomplete because the mold cavity is not filled with plastic or the injection molding process lacks some details.
可能出现问题的原因：
Possible causes of problems:
(1)注塑速度不足。(2)塑料缺料(3)螺杆在行程结束处没留下螺杆垫料。(4)运行时间变化。(5)射料缸温度太低。(6)注塑压力不足。(7)射嘴部分被封。(8)射嘴或射料缸外的加热器不能运作。(9)注塑时间太短。(10)塑料贴在料斗后壁上。(11)注塑机容量太小（即注射重量或塑化能力）。(12)模温太低。 (13)没有清理干净模具的防锈油。(14)止退环损坏，熔料有倒流现象。
(1) Insufficient injection speed. (2) Plastic material shortage (3) the screw did not leave screw padding at the end of the stroke. (4) Running time changes. (5) The temperature of the injection cylinder is too low. (6) Insufficient injection pressure. (7) The nozzle is partially sealed. (8) The heater outside the nozzle or injection cylinder cannot operate. (9) Injection molding time is too short. (10) Plastic is pasted on the back wall of the hopper. (11) The capacity of the injection molding machine is too small (i.e. injection weight or plasticizing capacity). (12) Mold temperature is too low. (13) The antirust oil of the mold was not cleaned. (14) The retaining ring is damaged and the molten material has backflow.
Solutions provided by Shandong mold manufacturer:
(1)增加注塑速度。(2)检查料斗内的塑料量。(3)检查是否正确设定了注射行程，需要的话进行更改。(4)检查止逆阀是否磨损或出现裂缝。(5)检查运作是否稳定。(6)增加熔胶温度。(7)增加背压。(8)增加注塑速度。(9)检查射嘴孔有没有异物或未塑化塑料。(10)检查所有的加热器外层用安培表检验能量输出是否正确。(11)增加螺杆向前时间。(12)增料斗喉区的冷却量，或降低射料缸后区温度。(13)用较大的注塑机。(14)适当升高模温。(15)清理干净模具内的防锈剂。(16)检查或更换止退环。
(1) Increase injection speed. (2) Check the amount of plastic in the hopper. (3) Check whether the injection stroke is set correctly, and change it if necessary. (4) Check the check valve for wear or cracks. (5) Check whether the operation is stable. (6) Increase the melt temperature. (7) Increase back pressure. (8) Increase injection speed. (9) Check whether there is foreign matter or unplasticized plastic in the nozzle hole. (10) Check all the outer layers of the heater and check whether the energy output is correct with an ammeter. (11) Increase the screw forward time. (12) Increase the cooling capacity in the throat area of the hopper, or reduce the temperature in the rear area of the injection cylinder. (13) Use a larger injection molding machine. (14) Properly raise the mold temperature. (15) Clean the rust inhibitor in the mold. (16) Check or replace the retaining ring.
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