A smokeless polishing solution for aluminum

Abstract

The invention discloses a smokeless polishing solution for aluminum products. The smokeless polishing solution is prepared from, by weight, 50%-65% of phosphoric acid, 15%-20% of sulfuric acid, 1%-3% of aluminum salt, 10%-15% of water and 3%-10% of additives. The additives comprise, by weight, 15%-20% of sorbitol, 8%-12% of sodium dodecyl benzene sulfonate, 2%-6% of polyethylene glycol, 8%-10% of sodium tripolyphosphate, 3%-8% of cupric sulfate pentahydrate and 48%-55% of water. By adopting the smokeless polishing solution, the polishing effect of a traditional three-acid polishing solution can be basically achieved, no yellow smoke is generated, and no flow mark is generated when drip hanging is conducted for a long time.

Description

technical field [0001] The invention relates to the field of metal surface treatment, in particular to a smokeless polishing liquid for aluminum materials. Background technique [0002] At present, the commonly used aluminum polishing solution on the market is a polishing solution using nitric acid, phosphoric acid and sulfuric acid triacid as the main raw materials. The triacid polishing solution has the advantages of simple process and high brightness of aluminum after treatment, but it also has the following disadvantages: 1 ) produces yellow smoke, the yellow smoke is mainly toxic nitrogen oxides, pollutes the environment, and is harmful to human health; 2) The polishing liquid drips for a long time to produce flow marks, causing the polishing liquid remaining on the aluminum material to corrode the aluminum material. Aiming at the problem of a large amount of yellow smoke produced during the surface treatment of aluminum tri-acid chemical polishing, many researchers in ...

AI Technical Summary

Problems solved by technology

[0002] At present, the commonly used aluminum polishing solution on the market is a polishing solution using nitric acid, phosphoric acid and sulfuric acid triacid as the main raw materials. The triacid polishing solution has the advantages of simple process and high brightness of aluminum after treatment, but it also has the following disadvantages: 1 ) produces yellow smoke, which is mainly toxic nitrogen oxides, which pollutes the environment and is harmful to human health; 2) long-term dripping of the polishing solution will produce flow marks, resulting in corrosion of the aluminum by the polishing solution remaining on the aluminum material

However, the polishing brightness of this technology is not enough to meet the brightness requirements of the traditional "three-acid" polishing process

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