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Introduction of curing process of color steel coil
Release time:
2016-08-22
Author:
Source:
In the production process of color steel coil, the substrate can pass through the baking furnace at a maximum speed of 140 m/min. In order to ensure a satisfactory curing time, the length of the baking furnace is generally 30~50m. After the substrate is painted, both sides are wet paint film. In order to make the substrate hang through the furnace chamber, there are generally two furnace types: air floating type and hanging type. The air flotation type uses the upward airflow in the furnace to hold the substrate. The overhang type uses the tension of the front and rear tension rollers of the strip to control the orientation of the strip steel in the furnace. Because the interval is long, the substrate will have a certain overhang degree. It is necessary to plan the furnace cavity into an anti-bow type. Color coating unit generally use hot air heating, there are also options
In the production process of color steel coil, the substrate can pass through the baking furnace at a maximum speed of 140 m/min. In order to ensure the curing time, the length of the baking furnace is generally 30~50 m. After the substrate is painted, both sides are wet paint film. In order to make the substrate hang through the furnace chamber, there are generally two furnace types: air floating type and hanging type.
The air flotation type uses the upward airflow in the furnace to hold the substrate. The overhang type uses the tension of the front and rear tension rollers of the strip to control the orientation of the strip steel in the furnace. Because the interval is long, the substrate will have a certain overhang degree. It is necessary to plan the furnace cavity into an anti-bow type. Color coating units generally use hot air heating, but also the use of gas incineration tail gas heating methods. The temperature in the furnace is divided into 4 to 5 areas for control, so that the temperature curve in the furnace can be changed with the request of the coating.
Now can choose linear and curved two kinds of heating method for coating curing. Linear type refers to the curing method in which the furnace temperature of 4~5 areas of the baking furnace is completely consistent; curve type refers to the method in which 4~5 areas of the furnace are separated from each other and different temperature control coating curing methods are selected. For example, the strip steel with a furnace length of 50 m, a unit speed of 120 m/min and a thickness of 0.5mm can be heated at the same furnace temperature of 310 ℃, 310 ℃, 310 ℃, 310 ℃ and 310 ℃, and can also be heated at different curve furnace temperatures of 210 ℃, 260 ℃, 330 ℃, 350 ℃ and 320 ℃. Each unit for each kind of coating the best temperature curve needs after practice to determine.
Key words:
Process, substrate, selection, heating, curve, 310, progress, ability, coating, temperature
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