Aluminum alloy degreasing and polishing two-in-one treatment solution and method for degreasing and polishing aluminum alloy

Abstract

The present invention discloses an aluminum alloy degreasing and polishing two-in-one treatment solution and a method for degreasing and polishing aluminum alloy. The aluminum alloy degreasing and polishing two-in-one treatment solution comprises the following components: 1-20 g / L of oxalic acid, 1-5 g / L of hydrofluoric acid or hydrofluoride, 0.001-0.01g / L of a surfactant and 0.05-0.15 g / L of an auxiliary agent. The method for treating the aluminum alloy by using the treatment solution comprises the following treatment steps: immersing to-be-treated aluminum alloy profiles into the two-in-onetreatment solution; initially reacting until bubbles begin to emerge; and then continuously immersing for three to five minutes to obtain the aluminum alloy profiles with smooth surfaces. The presentinvention is used to treat aluminum alloy profiles, which can not only complete degreasing and polishing in one step, but also improve the corrosion resistance and pollution resistance of the profiles, improve the high mirror reflection characteristics of the aluminum profiles and increase the weight of the profiles. Moreover, the treatment solution does not need to be replaced and can be recycled.

Description

technical field [0001] The invention relates to the technical field of surface treatment of aluminum alloy profiles, in particular to a two-in-one treatment liquid for aluminum alloy degreasing and polishing. Background technique [0002] Aluminum alloy surface treatment mainly removes oil stains generated during the production of aluminum profiles, and removes mechanical lines and natural oxide films on the surface of aluminum alloy profiles to obtain profiles with smooth surfaces. [0003] In the prior art, polishing technology is mainly used for the surface treatment technology of aluminum alloy mechanical grain and oxide film. The polishing technology is divided into mechanical polishing and chemical polishing, and chemical polishing is further divided into chemical polishing and electrochemical polishing. Chemical polishing: using phosphoric acid-sulfuric acid-nitric acid, the polishing mechanism is the acid corrosion process of aluminum-passivation process-viscosity, t...

AI Technical Summary

Problems solved by technology

[0006] Regardless of the above polishing technology or chemical cleaning technology, the treatment liquid needs to be replaced or replenished, and these two technologies will cause losses to the aluminum alloy profile due to acid etching or mechanical treatment, resulting in a reduction in the weight of the aluminum alloy profile after treatment

According to statistics, the degreasing process in the prior art consumes 10-15Kg / t per ton of aluminum material; the polishing process in the prior art consumes 8-10Kg / t per ton of aluminum material

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