Shandong color steel volume manufacturers: color steel volume pressure spot problem is what factors cause?

Shandong color steel coil manufacturers said, color steel coil because of the color more, color and lustre, loved by the public, sometimes will find the material will have pressure spot, what is the cause of? Below, bring everyone together to analyze.

Color steel coil compared with the building plate, used for home appliances color coated plate substrate has a higher elongation, flexural strength ratio and the corresponding R value and N value; and the requirements of the paint film and the substrate adhesion is strong, the coating has a certain degree of flexibility, the corresponding hardness is low, home appliances with color coated plate volume in shear and uncoiling, the surface often appears - defects, this defect is Color coated plate coating in baking, cooling, coiling, the coating surface due to coiling tension and slight deformation, sometimes the surface is rough, presenting the naked eye visible form of pressure spot, slight point defects will gradually disappear with the extension of the storage time of the steel plate, and can be eliminated by heating, however, even with the measures mentioned above, it is impossible to eliminate the serious point defects, which affects the user's use.

Shandong color steel coil manufacturer said, color steel rolled spot is a kind of defect produced in the production process, if looking for the cause and influencing factors of this defect in the production process, it needs to stop and check many times, affecting the production plan and increasing the cost of production, therefore, it is necessary to simulate, reproduce and evaluate this kind of defect in the laboratory, and to find out the cause and influencing factors of this kind of defect in all aspects.

In short, in order to avoid the problem of pressure spot on the surface of color steel coil in production, it is necessary to treat every detail in the production of the product strictly, and do the regular maintenance work of the production equipment to reduce the pressure spot effectively.

Shandong color steel coil manufacturer said, the color steel coil sold on the market, some color steel coil has gloss, some reach the due gloss or uneven color, or coating curing a few hours later, or after using gloss decline, drop light, what is the cause of this?

1. Check whether the fineness of the coating on the computer meets the process requirements.

2. The coating should be fully mixed and filtered before using the computer, and the thinner should not be added too much.

3. Control the humidity of the roller coating room to prevent water from mixing into the coating.

4. Check whether the thinner matches the coating, and the wet film thickness of the topcoat should not be too thin.

The way to solve the problem of no luster on the surface of color roll is to set the temperature of each section of the curing oven reasonably to avoid too high or too low.

The quality standard of color roll has four layers of treatment on the front and back, so what are its raw material requirements?

(1) Use aluminum-zinc alloy as the base layer;.

(2) Chemical coating treatment.

(3) Apply epoxy primer; and

(4) Paint the surface.

Shandong color steel coil manufacturer said, cold bridge with sliding iron fixed seat: the upper part of 2mm thick aluminum magnesium zinc alloy plate iron, the lower part of 3mm thick aluminum magnesium zinc alloy plate iron, the middle part of the cold bridge break with polymer rubber ring, aluminum magnesium zinc bolt connection combination.