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Definition of A Mold Temperature Controller
What is a mold temperature controller used for? A mold temperature controller is used to control the temperature of a mold, heat it to a working temperature and maintain it at a constant working temperature. It is used to heat oil or water to the required temperature of the mold and circulate it within the mold to control the temperature and maintain a stable temperature to improve product quality and production efficiency. The mold temperature controller can provide an accurate temperature tolerance of ±0.1°C, improve the efficiency of the molding process, reduce the generation of defective products, improve the appearance of the products, suppress defects, speed up the production process, reduce energy consumption and save energy, etc.
Mold temperature controllers can be classified according to their temperature control characteristics: standard mold temperature machines and high-temperature mold temperature machines. The standard type is mainly used in the injection molding and extrusion industry, while the high-temperature type is mainly used in the metal die-casting and molding industry.
Classification of Mold Temperature Controllers
The different heat conduction mediums can be divided into mold temperature controllers usually have oil circulation heating and water circulation heating, water circulation heating is the water type mold temperature controller (water temperature machine) with water as the medium, and oil circulation heating is the oil type mold temperature controller (oil temperature controller) with heat conduction oil as the medium. Nowadays, mold thermostats are widely used in the demand market, and manufacturers who need to purchase mold thermostats also need to buy water or oil thermostats according to the actual production products.
1. Water Temperature Controller
Clean water is its thermal medium, through the heating and pressure technology and water cooling design principle to provide manufacturers with room temperature ~ 180 ℃ between the temperature, according to the temperature required by the production enterprises and then PCL control set different temperatures, common water temperature controller temperature has three kinds: 120 degrees water temperature controller, 150 degrees water temperature controller, 180 degrees high-temperature water temperature controller. If the water quality of the production enterprise if the acidity and iron are too high, or the circulating water is cloudy and unclean with too many impurities, it is not recommended to use the water circulation mold temperature controller. The water-type mold temperature controller is commonly used in optical lenses, injection molding, and other industries because it is relatively clean.
2. Oil Temperature Controller
The use of high temperature and high-pressure decomposition of industrial heat transfer oil as a heat transfer medium, the use of direct heating and indirect cooling design principle to provide manufacturers with room temperature ~ 350 degrees (special can be 400 ℃) between the industrial temperature, common mold oil temperature controller has 200 degrees oil temperature machine, 300 degrees oil temperature controller, 350 degrees oil temperature controller. If the products produced by the manufacturer are transparent, or optical mirror products, will be affected by the oil and gas gloss, it is not recommended to use an oil circulation mold temperature controller, can consider a high gloss mold temperature controller.
This series of hydraulic presses is a general-purpose hot pressing hydraulic press, which can be used for the hot pressing process of resin, PMC, ceramics and other non-metallic materials.
1500T Hot Press Hydraulic Press For Carbon Fiber Composite Molding
Carbon fiber high-temperature compression molding is a process where carbon fiber prepreg is placed between the upper and lower molds and the mold is heated and the resin is cured into carbon fiber products under certain conditions. 1500-ton hot press hydraulic presses for carbon fiber high-temperature compression molding are generally heated by induction heating and high-temperature oil heating.
Carbon fiber high-temperature molding electromagnetic heating: 1500 ton hot press hydraulic press electromagnetic heating is a new type of induction heating process, the inductor is integrated into the mold, the temperature can be controlled between 20°C- 400°C and the surface of the mold is heated by the inductor inside the mold. Electromagnetic induction can heat the mold quickly, but it is not suitable for heating large molds and has certain limitations.
Another heating method for high-temperature compression molding of carbon fiber is the use of high-temperature oil heaters, which indirectly control the temperature of the mold through heat transfer oil. The temperature can be controlled from 20°C to 300°C. The oil thermostat is evenly heated and highly controllable. The oil temperature controller has a cooling function, which prevents the mold temperature from being too high and causing deformation of the carbon fiber products.
The 1500-ton hot pressing machine requires high mold temperature for carbon fiber molding, which generally requires precise temperature control. The mold temperature machine developed by using a temperature controller controls the mold temperature in sections. Mold temperature can be controlled according to customer requirements. The temperature control accuracy is +1°C. The temperature control of carbon fiber molding products is generally divided into 5 stages.
- In the first stage, the mold needs to be heated to a certain temperature within a certain period to melt the resin in the carbon fiber cloth in the mold.
- In the second stage, the mold temperature is controlled to a certain temperature so that the resin is fully circulated in the mold.
- The third stage involves raising the mold temperature to a higher temperature to allow the catalyst in the prepreg, i.e. the carbon fiber prepreg, to react.
- The fourth stage is still the high-temperature insulation stage, during which the resin reacts fully with the catalyst in the carbon fiber prepreg.
- The fifth stage is the cooling and forming process, which is the initial forming of the carbon fiber product. During the five stages of compression molding, the mold temperature must be controlled precisely and at a certain heating and cooling rate. Too fast or too slow heating and cooling rates will affect the final quality of the carbon fiber product.