防火彩钢板表面为什么出现压斑？

Why is there pressure spot on the surface of fireproof color steel plate?

大家好，我是小编，您知道防火彩钢板表面为什么出现压斑吗？今天小编来具体为大家分析下，希望对大家有所帮助。

Hello everyone, I'm Xiaobian. Do you know why there are pressure spots on the surface of fireproof color steel plate? Today, I'd like to make a detailed analysis for you, hoping to help you.

防火彩钢板在剪切使用时，表面时常会出现一种缺陷——表面压斑缺陷，该缺陷是彩涂板涂层烘烤、冷却后卷取时，由于卷取张力导致涂层表面的轻微变形，有时表面呈现出粗糙,表现出了视觉可见的压斑形态。这是什么原因造成的呢？

When the fireproof color steel plate is used in shearing, a kind of surface defect often appears, that is, surface pressure spot defect. The defect is that the coating surface is slightly deformed due to the coiling tension when the coating is baked and rolled after cooling. Sometimes the surface appears rough, showing the visual pressure spot shape. What causes this?

轻微的压斑缺陷会随防火彩钢板存放时间的延长而逐渐消失，经过加热也可消除。但是较为严重的压斑缺陷即使采用上述措施也不能消除，从而影响用户使用。防火彩钢板压斑是生产过程中产生的一种缺陷，若是在生产过程中寻找产生这种缺陷的原因及影响因素，需要经过多次停机查排，影响生产计划，提高生产成本。因此需要通过实验室模拟、复制这种缺陷，并对其进行评价，从各个方面寻找产生缺陷的原因与影响这种缺陷的因素。

With the extension of the storage time of the fireproof color steel plate, the slight spot defects will disappear gradually, and can be eliminated by heating. However, even if the above measures are adopted, the more serious defects can not be eliminated, thus affecting the use of users. Spot pressing is a kind of defect in the production process of fireproof color steel plate. If the causes and influencing factors of this kind of defect are found in the production process, it needs to stop for many times to check and arrange, which will affect the production plan and increase the production cost. Therefore, it is necessary to simulate, copy and evaluate the defects in the laboratory to find out the causes of the defects and the factors influencing the defects.