For cold-formed steel equipment, no matter its roll or cross wheel road should be effectively protected by tube bundles, in order to achieve this purpose, each pass should be equally stressed, so as to be able to wear evenly, thereby prolonging the service life of the roll. Generally, C12MoV material is used for the rolls of cold-formed steel mills, because this material has good wear resistance, but pay attention to the relationship between hardness and strength, so it must be handled well.
The upper and lower rolls or horizontal wheels of the cold-formed steel machine should be effectively protected by tube bundles, otherwise problems will easily occur during use. For example, the track will be blurred and deformed, and the force will be uneven, which will shorten its service life. In the production process, if there is bending and twisting, the main reason is the unbalanced force, so we need to balance the force in the design so that the processing can be accurate.
In the rolling process of the cold-formed steel machine, the rolling stability should be considered. If the material is swaying left and right in the raceway, then we have to take corresponding measures. For example, during assembly, the gaps in each area of the roller can be kept consistent. And before the material bites, a guide bevel can be set to avoid this problem.
Due to the friction between the surface of the roll and the strip, the surface scratches caused by heat during the cold forming process, therefore, must be formed in the lubrication and cooling roll molding process. Roll forming lubricants are generally classified into non-water-based lubricants and water-soluble lubricants.
Widely used is water-soluble emulsion, which is the adhesion of oil film thickness, as well as good lubricity and rust prevention. However, care should be taken to prevent the lubricant remaining on the surface of the profile from being decomposed by water during storage due to local corrosion. Although the lubricating properties soluble in organic lubricants are slightly inferior, through the action of surfactants, its profile and equipment contamination are low, which can maintain a clean production environment.