The forming rolls are mainly hot rolled coils and cold rolled rolls. Hot rolled coils are processed products before billet recrystallization. Cold rolled coils are the follow-up process of hot rolled coils.Steel Coil
The general weight of the steel coil is 15-30t around. This year, China's hot rolling production capacity has been expanding, there are dozens of hot rolling production lines, there are some projects will be opened or put into production. Coil sold mainly for large customers, the general users do not have the equipment or the amount of limited. Therefore, the subsequent processing of steel coils will be a promising industry. Of course, the larger steel mills now have their own unwinding and leveling projects.Steel Coil
The high temperature uniform corrosion and electrochemical corrosion behavior of stainless steel in uranyl nitrate solution with different concentrations and ph value were studied by weighing method and electrochemistry method. The results of uniform corrosion test show that under the selected corrosion conditions, 321 stainless steel samples in 960h, its surface finish has no significant change, corrosion rate is less than 0.04g/m2 , corrosion resistance in a low acidity uranyl nitrate solution.Steel Coil
Corrosion electrochemical characteristics of stainless steel in dissolved oxygen uranyl nitrate solution were studied by corrosive electrochemical method, and the corrosion potential and corrosion current density of the electrodes were measured. Through AES analysis, it is shown that the samples with electrochemical corrosion have a certain amount of uranium in the corrosion film, and the thickness of the uranium-containing corrosion film is 10~15nm.Steel Coil
The appropriate particle size of the abrasive material polishing, so that the surface is continuous grinding. In order to ensure the yield strength, tensile strength, elongation and hardness of all kinds of stainless steel plate, the mechanical properties meet the requirements of the stainless steel coil before delivery must undergo annealing, solid solution treatment, aging treatment and other heat treatment. The corrosion resistance of stainless steel coil is mainly determined by its alloy composition (chromium, nickel, titanium, silicon, aluminum, etc.) and the inner structure of stainless steel plate, which is the main function of chromium. Chromium has a high chemical stability, can form a passivation film on the steel surface, so that the metal is isolated from the outside world, the protection of steel plate is not oxidized, increase the corrosion resistance of steel plate. The corrosion resistance decreases after the passivation film is destroyed.Steel Coil
