Fire test color change of purification color steel plate manufacturer

Fire test color change of purification color steel plate manufacturer

The setting condition is that the color steel plate is 10℃m away from the oil pan. From the temperature rise curve of the color steel plate, it can be seen that the sample has been heated to about 600℃. Figure 4 shows the fire marks of the color steel plate 10℃m away from the oil pan. It can be seen that the iron sheet as a whole has not peeled off the glass wool core material. There are a few gray block areas on the fire surface of the core material, scattered on the surface of the black flocculent area, with a thin thickness, and the overall surface is concave inward. The overall surface is dominated by black flocculent areas. From the cross-section, the heat marks spread to the surrounding edges with the high temperature point as the center, and the red filamentous area and transition zone are not obvious. The black flocculent area at the higher temperature point B1 is wider.
Experimental conditions of purification color steel plate manufacturers

The setting condition is that the color steel plate is 20cm away from the oil pan, and the temperature rise curve of the color steel plate is shown in Figure 5. It can be seen that after the sample was roasted at a flame of about 400℃ for about 2 minutes, the iron sheet as a whole did not peel off the glass wool core material. Figure 6 shows the heat traces of the color steel plate 20cm away from the oil pan. The iron sheet on the fire-facing side was lifted, and black and red filamentous substances remained on it.

The surface level of the glass wool core material shows different trace levels, among which the red filamentous area and the transition area are more obvious. From the cross-sectional view, only part of the surface of the glass wool core material has traces of high-temperature baking, the black flocculent area and the red filamentous area are thinner, and the transition area is relatively thicker. The overall structure of the glass wool is complete, and the shrinkage deformation is not obvious.

When the color steel plate does not peel off the core material, the glass wool core material as a whole is concave and deformed in the back-fire direction, and red and black substances are adhered to the inside of the color steel plate. From the cross-sectional view, the gray block area, black flocculent area, red filamentous area and transition area are unfolded from the fire-facing direction to the back-fire direction. The color and shape changes of glass wool color steel plates in fire are summarized as follows.

Color Change

After being roasted by open flames or radiated at high temperatures for a certain period of time, the color of the glass wool core material in the glass wool color steel plate changes significantly. This color change pattern can reflect the different temperatures during the fire.

The finished glass wool after processing is light yellow, some of which are darker and reddish, and some are lighter and whiter.

The transition zone is an area between the normal state of glass wool and the red filamentous area. The color of the transition zone is medium yellow, and the color level is obviously transitional. The glass wool is a red filamentous area in the area around 400℃. The color of the red filamentous area is dark red, and some are brown and darker. Some are dark yellow and lighter.

The glass wool fiber is a black flocculent area in the area below 500℃, and some are slightly lighter and gray.

Under high temperature conditions, the glass wool fiber begins to agglomerate at 500~600C, and the fiber shrinks and produces gray block objects. It can be seen from the temperature rise diagram of the experiment that this phenomenon occurs when the glass wool is above 600℃. The gray block area is light gray, some of which are darker and blacker, and some are lighter and whiter.

The block area has a strong reflective ability, and it is easy to see obvious reflections under good lighting conditions.