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济南注塑模具出现龟裂现象怎么办?

来源:http://www.sdlqmj.com 日期:2019-04-03 发布人:admin 浏览次数:
在经过长时间的运用之后,人们常常会发现济南注塑模具会呈现龟裂现象,这种状况的呈现是塑料制品较为常见的缺陷之一,产生的缘由也是有很多方面的,下面便来详细的从现象产生的缘由和处理办法的角度来阐明吧。
After a long period of application, people often find that Jinan injection mold will appear cracking phenomenon, this situation is one of the more common defects of plastic products, the causes are also many aspects, the following will be detailed from the causes of the phenomenon and treatment methods to clarify it.
(1)外部应力惹起的龟裂:这里的外部应力,主要是济南注塑模具设计不合理而形成应力集中,特別是在尖角处更需留意。
(1) Cracks caused by external stress: The main external stress here is the stress concentration caused by unreasonable design of injection mould in Jinan, especially at sharp corners.
(2)剩余应力惹起的龟裂:剩余应力主要由以下三种状况,即充填过剩、脱模推出和金属镶嵌件形成的。作为在充填过剩的状况下产生的龟裂,其处理办法主要可在以下几方面动手:
(2) Cracks caused by residual stress: residual stress is mainly caused by the following three conditions: overfilling, demoulding and metal inlay. As a crack caused by overfilling, its treatment can be mainly carried out in the following aspects:
1、由于直浇口压力损失小,所以,假如龟裂主要产生在直浇口左近,则可思索改用多点散布点浇口、侧浇口及柄形浇口方式;
1. Because the pressure loss of the direct gate is small, if the crack mainly occurs near the left side of the direct gate, the multi-point sprinkler gate, side gate and handle gate can be used.
2、在保证树脂不合成、不劣化的前提下,恰当进步树脂温度能够降低熔融粘度,进步活动性,同时也能够降低注射压力,以减小应力;
2. On the premise of guaranteeing the incompleteness and non-deterioration of the resin, properly improving the temperature of the resin can reduce the melting viscosity, improve the activity, and also reduce the injection pressure to reduce the stress.
3、—般状况下,模温较低时容易产生应力,应恰当进步温度,但当注射速度较高时,即便模温低一些,也可减低应力的产生;
3. - Generally speaking, the stress is easy to occur when the mould temperature is low, and the temperature should be properly improved. However, when the injection speed is high, the stress can be reduced even if the mould temperature is lower.
济南注塑模具
4、注射和保压时间过长也会产生应力,将其恰当缩短或停止几次保压切换效果较好;
4. Stress will also occur if the injection and holding time are too long. It is better to shorten or stop several holding switching appropriately.
(3)外部环境惹起的龟裂:化学药品、吸潮惹起的水降解,以及再生料的过多运用都会使济南注塑模具物性劣化,产生龟裂。
(3) Cracks caused by external environment: chemical drugs, water degradation caused by moisture absorption, and excessive use of recycled materials will deteriorate the physical properties of Jinan injection moulds, resulting in cracks.
以上便是对济南注塑模具产生龟裂现象的缘由以及对应处理办法的引见,在面对不同的状况时,选择适宜的办法才是有效处理问题正确的措施。
These are the reasons for the cracking of injection mould in Jinan and the corresponding treatment methods. In the face of different situations, choosing the appropriate method is the right measure to deal with the problem effectively.
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Today's exciting content is provided by Jinan Rolling Curtain Door Factory. If you have any cooperation partners, please visit our official website: http://www.jnhsjlm.com.

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