Notes on the force and deformation of color coated rolls

The quality of color-coated rolls not only depends on the basic properties of the substrate and coating, but also depends on the production operation process and control technology. Operation and control technology have a great influence on the physical properties and surface quality of color coated roll products. From the analysis of the production process, the production control technology should focus on cleaning, chemical coating, coating and curing. Today we will share about the force and deformation of color coated rolls.

The spiral open cylindrical model is used to consider the stress and deformation during the coiling process. The uneven distribution along the circumferential direction and the incomplete contact between the coil head ring and the reel are proposed, and a set of internal stress distribution models suitable for coiling of hot-rolled color-coated coils are proposed, and the corresponding interlayer slip is given. In the coiling process of hot-rolled color-coated coils, as the thickness of the strip increases, the non-circular feature of the inner band of the coil along the circumferential direction becomes more obvious, and the circumferentially symmetric closed cylindrical model used in the past not only has a large actual deviation of the strip , And can not accurately predict the problem of slip between layers.

Compile the corresponding steel coil internal stress and interlayer slip prediction software and apply it in production practice. During the winding process, as the diameter of the coil increases, the radial pressure of a layer of color-coated coil increases, especially for the inner coil of the steel coil. The probability of interlayer adhesion increases significantly; however, for unwound coils, the radial pressure decreases from the inside to the outside. However, the hoop stress law is different. The minimum value usually occurs in a certain layer within the coil. The hoop stress of the color-coated roll head decreases with the increase of pressure. It fully combines the equipment and process characteristics of the thermal stripping process.