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[Glass fiber reinforced plastic resin]
Author: admin Source: Site Posted: 2019-03-18 23:04 Click:

Glass fiber reinforced plastic SMC mold heating mold temperature machine is a type with high thermal efficiency, average heating, accurate temperature control, temperature control accuracy of ± 0.5 ℃, has significant energy-saving effects of energy-saving more than 30%. The SMC mold heating mold temperature controller adopts computer-controlled touch control, which is easy to understand and understand. The piping adopts a unique and unique heating design and temperature self-control to quickly meet the temperature and temperature requirements of various products, and advances the production efficiency and guarantees the product quality and quantity.

In SMC compression molding, what effect does the mold heating mold temperature machine have? In the process of FRP SMC compression molding, the mold heating mold temperature machine must preheat, control and cool the mold. FRP SMC compression molding, how to heat the mold?

In the preheating stage, it is necessary to set the temperature of the mold temperature and the heating time, and through the preheating of the mold, the preheating requirements of the molding material are reached. The heating of FRP SMC molding material before molding has the dual significance of preheating and drying on weekdays.

SMC mold heating mold temperature machine

The main effects of mold heating mold temperature machine are:

1. Glass fiber reinforced plastic SMC mold heating mold temperature preheating can pre-enter the material temperature when entering the mold, shortening the time and molding cycle of the material to achieve the best fluidity.

2. Advance the uniformity of the internal temperature of the material, reduce the temperature difference between the material and the mold, and advance the average degree of fluidity of the material, so as to reduce the molding pressure and advance the physical machine strength of the product.

3. The preheating of the mold temperature machine can further reduce the moisture and volatile content, which can reduce the molding pressure.

The heating stage is the process of reaching the FRP SMC molding temperature. In this process, it is also necessary to control the heating speed and temperature of the mold temperature machine. For the rapid molding process, the mounting temperature is the pressing temperature, and there is no problem of heating speed. For the slow molding process, an appropriate heating rate should be selected according to the type of the molding resin and the thickness of the product. The molding temperature has a great relationship with the type of molding material. The molding temperature is too high, the resin response rate is too fast, and the material fluidity is too low. It often shows early local solidification and cannot fill the mold cavity. If the temperature is too low, the product does not have sufficient heat preservation time, and it will present defects such as incomplete curing.

In view of the complicated temperature control premise required by the stage heating, the SMC mold heating mold temperature performance is automatically controlled by the PLC's heating and cooling speed, so that the temperature can be correctly and correctly controlled, and the set temperature can be quickly reached. Convenient for users to adjust and set. Appropriately used in various temperature control places.

Molding temperature control mainly refers to the control of mold temperature, heating rate, molding curing temperature and heat preservation time. How to control the molding temperature of these three stages, what requirements must be met

Molding temperature: refers to the temperature of the mold when the material is placed in the mold cavity. It mainly depends on the type of material and the quality index of the molding material. When the volatile matter content of the molding material is high and the insoluble resin content is low, the molding temperature is lower. Complicated layouts or large molded products, when it is difficult to load the mold, the temperature of the mold should be lower, it can be controlled at room temperature. The mold loading temperature can shorten the cycle time and the efficiency. The molding temperature depends on the type of material. For example, the molding temperature of the magnesium phenolic premix molding material is the molding curing temperature, not at room temperature.

Heating rate: It also depends on the type of material, such as 616 # phenolic premix molding material, the heating rate is 1-20 ℃ / minute. The speed of the heating rate is intimately related to the reaction rate of the curing of the resin. If the heating rate is too fast, it will easily cause uneven curing of the resin and affect the quality of the product.

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