In the production process, it is inevitable that there will be problems, many manufacturers in the production of color coated coil plate collapse phenomenon, which is a headache at the beginning, so what are the reasons for the phenomenon of color coated
coiled plate manufacturers in the production engineering?
Color coated roll
The direct cause of the collapse phenomenon is that the color plate curls and unwinds (the color roll is off-line). Because of the reduction of the number of layers per unit thickness of the coil, the specific strength of the coil
is lower than that of the normal state, and the horizontal coil collapses under its own gravity. Loose coil mainly refers to the relative slip between the steel strips, that is, there is not enough static friction between the steel strips, that is to
say, the large static friction force between the steel strips is not enough to prevent the relative movement of the steel strips.
In practice, the phenomenon of coil collapse often occurs in the coiling of cold-rolled and hot-rolled coils. The solution
is usually to correct the tension. The set value generally increases a certain tension on the basis of ordinary steel, so as to increase the friction between layers. For different polyester color coated boards, the large static friction force is related
to the environment temperature, humidity and the micro state of the friction surfaces, especially the latter. After the coating is cured, the contact mode between the coatings is surface to surface contact, and the coating will not produce compression
deformation. Properly increasing the coiling tension and increasing the static friction force between layers can effectively prevent collapse Roll phenomenon occurs.