Whether it is a kind of enameled wire, including CCA wire , the solvent vapor and cracked low-molecular substances generated during the baking process of the enameled wire must be discharged out of the furnace in time. The density of the solvent vapor and the humidity in the gas will affect the evaporation and curing during the baking process, while the low-molecular substances have an effect on the smoothness and brightness of the paint film. In addition, the concentration of solvent vapor is related to safety, so waste discharge is very important to product quality, safe production and heat energy consumption.

Considering product quality and safety production alone, the amount of waste discharged is relatively large, but a large amount of heat is taken away when the waste is discharged, and it should be discharged appropriately. The catalytic combustion hot air circulation furnace usually emits 20 to 30% of the hot air volume. The amount of waste discharged depends on the amount of solvent used, the humidity of the air and the heat of the oven. For every 1kg of solvent used, it takes about 40-50M3 (converted to room temperature) to discharge waste. From the heating of the furnace temperature, the scratch resistance of the aluminium Magnet wire, and the gloss of the enameled wire, the amount of waste discharged can also be judged. If the furnace temperature is turned off for a long time, but the temperature indication value is still high, it means that the heat generated by catalytic combustion is equal to or greater than the heat consumed by the oven, and the oven will exit and control at high temperature, so waste discharge should be appropriately increased.

If the furnace temperature is heated for a long time, but the temperature indication is not high, it means that the heat consumption is too much, and it is likely that the amount of waste is large. After inspection and confirmation, the amount of waste should be appropriately reduced. When the scratch resistance of the enameled wire is poor, it may be that the gas humidity in the furnace is too high, especially in humid weather in summer. The humidity in the air is very high. In addition, the moisture generated after the catalytic combustion of the solvent vapor makes the gas humidity in the furnace higher, and the waste discharge should be increased at this time. The dew point of the gas in the furnace does not exceed 25°C. If the enameled wire has poor gloss and is not shiny, there may be a small amount of waste. This is because the broken low-molecular substances are not discharged and adhere to the surface of the paint film, making the paint film lose its luster.

Smoke is a common undesirable phenomenon on horizontal enamel furnaces. According to the ventilation theory, gas always flows from a high-pressure point to a low-pressure point. After the gas in the furnace is heated, its volume expands sharply and the pressure rises. When there is a positive pressure in the furnace, smoke will be emitted from the furnace mouth, which can increase the exhaust air volume or reduce the air supply volume to restore the negative pressure zone. If there is smoke at only one end of the furnace mouth, it is because the air supply at this end is too large, and the local pressure is higher than the atmospheric pressure, so that the supplementary air cannot enter the furnace from the furnace. Mouth, reduce the air supply, so that the local positive pressure disappears.

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