Aluminum alloy evaporator inner wall thin plate and continuous casting rolling production process thereof

Abstract

The present invention discloses an aluminum alloy evaporator inner wall thin plate and a continuous casting rolling production process thereof. The thin plate adopts an aluminum manganese alloy as a base, contains silicon, iron, copper, manganese, magnesium, zinc and titanium, and is prepared by adopting a continuous casting rolling production process. The process comprises the following steps: adding raw materials to a smelting furnace to carry out melting, refining, and residue removing; discharging the resulting material to a cast rolling machine from the furnace to carry out cast rolling; carrying out a first annealing treatment on the cast-rolled plate material to reduce needle-like FeAl3 and influence on mechanical property by a phase composition, wherein the phase composition and the Al-Mn solid solution achieve phase equilibrium; carrying out cold rolling on the first-annealed plate material 5-6 times; carrying out a second annealing treatment on the cold-rolled plate material; and carrying out foil rolling 1-2 times to prepare the aluminum alloy evaporator inner wall thin plate. The technical scheme of the present invention has the following characteristics that: good moldability, good weldability, and good corrosion resistance are provided, structure and performances are uniform, metallurgical defects are less, anisotropy is low, strength is high strength, elasticity is good, and the like.

Description

technical field [0001] The invention relates to an aluminum alloy plate and a processing technology for the aluminum alloy plate, belonging to the technical field of aluminum thin plate processing, in particular to an aluminum alloy evaporator inner wall thin plate and a continuous casting and rolling production process thereof. Background technique [0002] Evaporation is the operation of heating a solution containing a non-volatile solute to a boiling state by heating, so that part of the solvent is vaporized and removed, thereby increasing the concentration of the solute in the solvent. Evaporators are widely used in chemical industry, food industry, pharmaceutical and other industries. [0003] The circulating cooling water of the evaporator contains a large amount of salts, corrosion products and various microorganisms. Since the water has not been treated, a large amount of calcium, magnesium carbonate scale, algae and microorganisms will form on the water side after t...

AI Technical Summary

Problems solved by technology

[0004] In the past, 1-series pure aluminum sheets such as 1050 alloy or 1145 alloy were used for the thin plate aluminum material used for the inner wall of the evaporator. Because the material of the 1-series pure aluminum is soft, the strength is low, and the elasticity is poor, the inner wall plate of the evaporator is easily scratched or damaged. Defects such as depressions, the surface is not smooth, easy to accumulate dirt, oxidation and corrosion. In addition, 1 series pure aluminum is easy to oxidize and slag during the welding process, and the weld often has virtual welding, which affects the quality of the weld