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山东模具制造厂家:加工时出现收缩痕的原因和解决方法

来源:http://www.sdlqmj.com 日期:2020-06-30 发布人:liqiang 浏览次数:
在塑料件加工中,由于因素,导致注塑件出现收缩痕,影响使用效果。今天,济南注塑加工厂为您介绍一下注塑件加工时出现收缩痕的原因和解决方法:
In the processing of plastic parts, due to factors, the injection parts appear shrinkage marks, which affect the use effect. Today, Jinan injection molding factory introduces the causes and solutions of shrinkage marks in the processing of injection molded parts
一、塑料件加工时收缩痕出现的原因
1、 Causes of shrinkage marks in plastic parts processing
1、熔融温度不是太高就是太低。
1. The melting temperature is either too high or too low.
2、模腔内塑料不足。
2. There is not enough plastic in the mold cavity.
3、冷却阶段时接触塑料的面过热。
3. The surface in contact with the plastic is overheated during the cooling phase.
4、流道不合理、浇口截面过小。
4. The runner is unreasonable and the gate section is too small.
5、模温是否与塑料特性相适应。
5. Whether the mold temperature is suitable for the plastic characteristics.
6、产品结构不合理(加强进古过高,过厚,明显厚薄不一)。
6. The product structure is not reasonable (strengthening the ancient too high, too thick, obviously different thickness).
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7、冷却效果不好,产品脱模后继续收缩。
7. The cooling effect is not good, and the product continues to shrink after demoulding.
二、塑料件加工时出现收缩痕的解决方法
2、 Solution of shrinkage mark in plastic parts processing
1、调整射料缸温度。
1. Adjust the injection cylinder temperature.
2、调整螺杆速度以获得正确的螺杆表面速度。
2. Adjust the screw speed to obtain the correct screw surface speed.
3、增加注塑量。
3. Increase injection quantity.
4、保证使用正确的垫料;增加螺杆向前时间;增加注塑压力;增加注塑速度。
4. Ensure to use the correct padding; increase screw forward time; increase injection pressure; increase injection speed.
5、检查止流阀是否安装正确,因为非正常运行会引致压力流失。
5. Check whether the check valve is installed correctly, because abnormal operation will cause pressure loss.
6、降低模具表面温度。
6. Reduce mold surface temperature.
7、矫正流道避免压力损失过大;根据实际需要,适当扩大截面尺寸。
7. Correct the flow channel to avoid excessive pressure loss, and appropriately expand the section size according to the actual needs.
8、根据所用塑料的特性及产品结构适当控制模温。
8. According to the characteristics of the plastic used and the structure of the product, the mold temperature should be properly controlled.
9、在允许的情况下改善产品结构。
9. Improve product structure where possible.
10、设法让产品有足够的冷却。
10. Try to make the product cool enough.
本文由山东模具制造厂家为您提供,我们的网站是:http://www.sdlqmj.com我们将以全心全意的热情为您提供更优质的服务,欢迎您的访问!
This article is provided for you by Jinan injection molding. Our website is: http://www.sdlqmj.com We will provide you with better service with wholehearted enthusiasm. Welcome to visit!

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