Roller surface treatment process

Abstract

The invention relates to a roller surface treatment process. The roller surface treatment process is characterized by comprising the following steps of 1) cleaning the surface of the roller with a solution prepared from methyl alcohol and nitric acid according to the volume ratio; 2) dissolving aquadag with alcohol, adding water to prepare a graphite lubricating liquid, and spraying the graphite lubricating liquid onto the surface of the roller; and 3) heating up circulating water with steam so as to introduce into the roller to heat up the roller circularly, then drying the surface of the roller. According to the roller surface treatment process, the surface of the roller is cleaned by the solution prepared from methyl alcohol and nitric acid by certain volume ratio, then the surface of the roller is washed by water so as to form a light yellow ferric oxide coating, so that the hardness of the surface of the roller is improved; the lubricating agent mixed by aquadag, alcohol and water by certain proportion is sprayed on the surface of the roller, so that the lubricating effect of the surface of the roller is improved, graphite particles are prevented from blocking off a spray gun or forming on the surface of a cast-rolling plate blank; as the roller is heated by hot water circularly, the temperature difference of the inner wall and the outer wall of the roller is lowered, the stress of the roller is prevented from concentrating in the process of erecting the plate, and the service life of a cast-rolling roller shell is prolonged.

Description

technical field [0001] The invention relates to a roll surface treatment process. Background technique [0002] After the roll is ground, it needs three treatments before it can be put into use. One is to clean, remove the surface grease with cleaning agent, treat the surface with acid, and then clean with water; the other is to spray a layer of protective agent; the third is to put it into production after preheating and drying with flame, and spray graphite lubricant continuously during use Cool and lubricate. However, the roll surface is prone to chromatic aberration when it is pickled, and watermarks are prone to appear when it is baked and dried. During production, defects such as stripes, patterns, and chromatic aberration will occur on the surface of the cast-rolled slab, which will affect the service life of the roll and the surface quality of the product. Contents of the invention [0003] In view of the problems existing in the prior art, the object of the pres...

AI Technical Summary

Problems solved by technology

However, the roll surface is prone to chromatic aberration when it is pickled, and watermarks are prone to appear when it is baked and dried. During production, defects such as stripes, patterns, and chromatic aberration will occur on the surface of the cast-rolled slab, which will affect the service life of the roll and the surface quality of the product.