Electric heating methods include electric furnace wire heating, infrared plate heating, infrared tube heating, infrared furnace heating and induction heating. In the hot blast stove with electric heating method, in order to make the temperature distribution in the furnace even, it is generally equipped with a blower for blast circulation. In the infrared furnace, in addition to a part of the electric energy being directly converted into heat energy and transmitted to the workpiece by convection, there is also a part of infrared energy transmitted to the workpiece by radiation. The ratio of heat energy and radiation energy of infrared heating elements with different structures is different. The coated object of powder coating will heat up from the inside when it is exposed to infrared radiation, while it will heat up from the outside when it is subjected to heat energy, so the temperature rises faster. However, due to the uneven temperature distribution in this type of baking oven, the farther away from the heat source, the lower the temperature, and when the size and shape of the object to be coated are different, the amount of heat received by different parts is also different, so the baking curing effect is significantly different, resulting in The film cures unevenly. This type of baking oven is only suitable for the baking of flat plates or simple drum-shaped objects that can be rotated in the oven, but not for the baking of workpieces with complex shapes.
What are the heating methods of the curing furnace?
Apr 07, 2023 Leave a message
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