The direct reason for the collapse of the magnesium coated wire is that the color plate curls and unwinds (the color roll is taken off the line), resulting in a loose roll phenomenon. After the coil plate of the magnesium coated wire is uncoiled, due to the decrease in the number of layers of steel strip per unit thickness of the steel coil, the specific strength decreases compared to the normal state, and the horizontal steel coil collapses under its own gravity. Loosening mainly refers to the relative sliding between the rigid layers of the rolled steel strip, which means that there is not enough static friction between the rigid layers of the strip, which means that the large static friction between the layers of the strip steel is not sufficient to prevent the relative movement between the layers of the strip steel.

In practice, the cold rolled and hot rolled coils of magnesium coated wire often collapse during coiling. The solution is usually to modify the tension. The set value generally increases a certain tension based on ordinary steel, which increases the interlayer friction of the strip. For different polyester color coated plates, due to the large static friction force being closely related to ambient temperature, humidity, and the microscopic state of the material friction surface, especially the latter, the contact mode between the coatings after baking and curing is surface to surface contact, and the coating does not generate compression deformation. Properly increasing the coiling tension and increasing the static friction force between the layers can effectively prevent the occurrence of roll collapse.

"Cibao oriented silicon steel coated with magnesium oxide production line.". Magnesium oxide forms a magnesium silicate bottom layer during high temperature batch annealing, and is also a high temperature annealing isolating agent. A good silicic acid film bottom layer is an important component of the insulating layer on the surface of oriented silicon steel.

A winding device for oriented silicon steel coated magnesium wire comprises a processing platform, wherein one end of the upper surface of the processing platform is fixedly connected to a motor through bolts, the output end of the motor is driven and connected to a rotary rod, the outer surface of the rotary rod is fixedly connected to a sleeve through bolts, and a support platform is provided on one side of the processing platform. The upper surface of the support platform is provided with a first rectangular block, and the upper surface of the first rectangular block is fixedly connected to a second rectangular block through bolts, The top of the second rectangular block is fixedly connected to a cylindrical block through bolts, one side of the cylindrical block is rotationally connected to a roller through bearings, the upper surface of the support platform is fixedly connected to a triangular plate through bolts, the triangular plate is connected to a hydraulic cylinder through a pivot pin, and the output end of the hydraulic cylinder is fixedly connected to a push plate through bolts. This device can achieve stable winding, constant tension, and neat winding edges, greatly improving the winding efficiency and reducing labor intensity of workers, The magnesium coating line has a wide range of applications and saves production costs