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注塑加工中注塑工艺及各工序的温度控制要点!

来源:http://www.sdlqmj.com 日期:2019-08-06 发布人:admin 浏览次数:
注塑是一种工业产品生产造型的方法。产品通常使用橡胶注塑和塑料注塑。注塑还可分注塑成型模压法和压铸法。注射成型是通过注塑机和模具来实现的。下面济南注塑加工的小编给大家详细的介绍一下注塑加工中注塑工艺及各工序的温度控制要点,希望大家喜欢!
Injection moulding is a method of moulding industrial products. Rubber and plastic injection moulding are commonly used in products. Injection moulding can also be divided into injection moulding and die casting. Injection moulding is realized by injection moulding machine and mould. The following small knitting of injection moulding in Jinan gives you a detailed introduction of injection moulding process and the key points of temperature control in each process. I hope you like it!
1、模具温度
1. Die Temperature
有些塑胶料由于结晶化温度高,结晶速度慢,需求较高模温,有些由于控制尺寸和变形,或者脱模的需求,要较高的温度或较低温度,如PC普通请求60度以上,而PPS为了到达较好的外观和改善活动性,模温有时需求160度以上,因此模具温度对改善产品的外观、变形、尺寸,胶模方面有不可抵估的作用。
Because of the high crystallization temperature, slow crystallization speed and high mould temperature, some plastic materials need higher mould temperature, some need higher or lower temperature because of the control of size and deformation, or the demand of demoulding, such as PC requests more than 60 degrees, while PPS sometimes needs more than 160 degrees in order to achieve better appearance and improve activity. The temperature of the die has an inestimable effect on improving the appearance, deformation, size and rubber mould of the product.
2、注射压力
2. Injection pressure
熔体克制行进所需的阻力,直接影响产品的尺寸,重量和变形等,不同的塑胶产品所需注射压力不同,关于像PA、PP等资料,增加压力会使其活动性显着改善,注射压力大小决议产品的密度,即外观光泽性。它没有固定的数值,而模具填充越艰难,注塑件压力也增大。
The resistance required for melt restraint directly affects the size, weight and deformation of the product. Different plastic products require different injection pressures. With regard to information such as PA and PP, increasing pressure can significantly improve their mobility. The injection pressure determines the density of the product, i.e. the appearance gloss. It has no fixed value, and the harder the filling of the mould, the greater the pressure of the injection parts.
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3、料筒温度
3. Barrel temperature
熔料温度是很重要的,所用的射料缸温度只是指导性。熔胶温度可在射嘴处量度或运用空气放射法来量度。射料缸的温度设定取决于熔胶温度、螺杆转速、背压、射料量和注塑件周期。您假如没有加工某一特定级别塑料的经历,请从 低的设定开端。
The temperature of the melt is very important, and the temperature of the injection cylinder used is only instructive. The melt temperature can be measured at the nozzle or by air radiation. The temperature setting of the injection cylinder depends on the melt temperature, screw speed, back pressure, injection volume and injection period. If you have no experience in processing a particular grade of plastics, please start with the lowest setting.
为了便于控制,射料缸分了区,但不是一切都设定为相同温度。假如运作时间长或在高温下操作,请将 区的温度设定为较低的数值,这将避免塑料过早凝结和分流。注塑件开端前,确保液压油、料斗封锁器、模具和射料缸都处于正确温度下。
For ease of control, the injection cylinder is divided into zones, but not all are set at the same temperature. If the operation takes a long time or operates at high temperature, set the temperature in the first zone to a lower value, which will avoid premature condensation and diversion of plastics. Before the injection parts start, ensure that the hydraulic oil, hopper blocker, mould and injection cylinder are at the correct temperature.
4、熔料温度
4. Melt temperature
熔体温度对熔体的活动性能起主要作用,由于塑胶没有详细的熔点,所谓熔点是一个熔融状态下的温度段,塑胶分子链的构造与组成不同,因此对其活动性的影响也不同,刚性分子链受温度影响较明显,如PC、PPS等,而柔性分子链如:PA、PP、PE等活动性经过改动温度并不明显,所以应依据不同的资料来调校合理的注塑件温度。
Melt temperature plays a major role in the activity of melt. Because plastic has no detailed melting point, the so-called melting point is a temperature zone in melting state. The structure and composition of plastic molecular chains are different, so the influence of temperature on the activity of plastic molecular chains is different. The rigid molecular chains are obviously affected by temperature, such as PC, PPS, etc., while the flexible molecules are affected by temperature. Chain such as: PA, PP, PE and other activities after the change of temperature is not obvious, so it should be based on different data to adjust the reasonable temperature of injection parts.
以上内容就是今天的精彩内容了,感谢大家的阅读。更多的详细资讯,敬请关注:济南注塑加工!如果您对我们还满意,请转告身边的朋友,如果您觉得我们的服务欠佳,欢迎大家提出宝贵的意见,感谢大家的支持!我们的网址:http://www.sdlqmj.com
The above is today's wonderful content. Thank you for your reading. More detailed information, please pay attention to: Jinan injection processing! If you are satisfied with us, please tell your friends. If you feel that our service is not good, you are welcome to make valuable comments and thank you for your support. Our website: http://www.sdlqmj.com

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