Die industry selection of industrial cold water machine should pay attention to the following issues.
A pair of mold is equal to a heat exchanger, heat is passed to a mold from the molten plastic melting, again by the mold continuously introduced to the circulating cooling medium - water, only a small part of is into the air injection molding machine and the pressure plate. Plastic molding cycle, sometimes can be accounted for more than 80% of plastic molding cycle, it is necessary to control the cooling time to the minimum. For example, a pair of mold molding cycle generally require 20 seconds, if the original cooling tower water use industrial chillers have ice water cooling, it is can be shortened to 16 seconds. Although the initial choice is equipped with a cold water machine cost is higher, but it can make production increased by 20% in the long-term production, can make a lot of income. So, how to choose ice water energy?
If the mold with hot glue Road, but also should be the heat of the energy into the cold amount of calculation, the general hot glue way is to kW as a unit, the unit should be converted into kcal / 1kw=860kcal, H / h. If an adequate water supply factory, the temperature is low, the cost is low, then you don't need to use air filter, which is generally not too realistic, unless the plant on the edge of the lake water temperature is relatively low; another is the deep urban water supply to meet the needs of temperature and flow, but often cost is too high. This method can be used for the experimental device, but for the plant, it is impractical to do so. Shenzhen East Star
Mold cooling fluid (water) temperature are generally subjected in material processing and product shape and great changes, such as thin polystyrene beaker, die water temperature below 0 DEG C; and most other circumstances, mold the required water temperature are within 5 DEG C so as to, microprocessor cold water function provide 5 DEG C water and low temperature type intelligent temperature control water function satisfy 5 DEG C until below 0 DEG C requirements.
The temperature difference between the inlet and outlet of the mould is usually set according to the requirements of the products. In many cases, the temperature difference is the most ideal one, but sometimes it needs the temperature difference between 1-2 and 3-5. The smaller the temperature difference, means that the same heat to bring out the need of ice water flow is greater, and vice versa. East Star Refrigeration