In the process of construction and installation, sometimes the installation is not smooth enough because of some factors. The appearance of this phenomenon will seriously affect the construction quality of the project, so we should pay attention to it.
What are the reasons for the installation of color coated plate is not smooth enough? This article will give you an analysis.
1. Poor mechanical properties lead to arch.
2. The purlin spacing is too large to produce irregular deflection for color coated sheets with poor mechanical properties.
3. The surface of the color coated sheet becomes uneven after being eroded by various kinds.
4. The joints under stress are not well combined, and the displacement and deformation of the plate will occur after being subjected to stress.
5. When it comes to climate change, it is easy to deform.
Through the introduction above, we can know that the main reason for the uneven installation is that we don't have the correct installation knowledge. In the process of installation, the stress point is a very important index. Finding the stress point and installing it in the right way can ensure the firmness of the plate.
Basic concepts of color coated sheet: cold rolled strip, galvanized strip (galvanized and hot galvanized) as the base plate, after surface pretreatment (degreasing and chemical treatment), roll coating method, coated with one or more layers of liquid paint, after baking and cooling, the sheet is coated steel plate.
Because the coatings can be of various colors, it is customary to call coated steel sheets painted sheets. Coated steel sheet has light weight, beautiful appearance, good anticorrosion performance, and can be directly processed. It provides a new raw material for construction, shipbuilding, vehicle manufacturing, furniture, electrical industry, etc. It has played a good role in replacing wood with steel, efficient construction, energy saving and pollution prevention.
In addition to zinc protection, the organic coating on the zinc layer acts as a covering and isolation function for the color coated steel plate with galvanized steel plate as its base plate, which can prevent the steel plate from rusting and has longer service life than that of galvanized steel plate. It is reported that the service life of the coated steel plate is 50% longer than that of galvanized steel plate. However, the service life of color coated sheets with the same galvanizing amount, the same coating and the same coating thickness will vary greatly in different areas and different parts of use. For example, in industrial areas or coastal areas, due to the effect of sulfur dioxide gas or salt in the air, the corrosion rate is accelerated and the service life is affected.