Due to the large volume of the wind turbine blade mold, its heating form is mainly through the built-in steel pipe, copper pipe or runner in the mold to achieve indirect heating.
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For large molds such as blades, because the actual work site generally has hoisting equipment, the plant is generally larger and higher, so that even if environmental heating is used, the heat will most likely be naturally concentrated in the middle and upper space of the workshop, and for the blade mold near the ground, it is difficult to work, and the main thing is that the surrounding temperature of the blade mold is to the appropriate temperature, and the non-production loss is more due to uneven heat distribution, so the cost is higher.
Considering that the overall size of the blade mold is generally larger, and the combination surface is more, if electric heating is used, the temperature collection point is more, resulting in complex temperature control, reaction lag, and it is easy to appear local overheating or burnout in actual production, so for the large wind power blade mold, it is recommended to use water heating is more practical, and compared with heat conduction oil heating, the safety of the water circulation mold temperature machine is better.