Bright brush plating nano-chromium solution and preparation thereof

Abstract

The invention discloses bright brush plating nanometer chromium solution and the preparation method thereof, which is composed of the following components which are mixed: chromic anhydride with concentration of 200 to 300 g / L, vitriol, the concentration ratio of which to the chromic anhydride is 1: 100, potassium iodide with concentration of 6 to 8 g / L, trichloroacetic acid with concentration of 13 to 15 g / L and sodium fluoride with concentration of 3 to 5 g / L. Chromic anhydride solution with concentration of 200 to 300 g / L is taken, the vitriol is added into the chromic anhydride solution, the concentration ratio of the vitriol to the chromic anhydride is controlled to 1: 100, the mixed solution is agitated on a magnetic stirrer, the potassium iodide is respectively added into the mixed solution, and the concentration of the potassium iodide is controlled to 6 to 8 g / L; the concentration of the trichloroacetic acid is controlled to 13 to 15 g / L; the concentration of the sodium fluoride is controlled to 3 to 5 g / L. The solution is agitated till being dissolved completely, and then filtered to obtain the bright brush plating nanometer chromium solution. Crystalline grains of about 100 nanometers are formed on a brush chromium coating, the coating luster is bright, the operating temperature is under 20 to 80 DEG C, thus the construction is convenient, and the concentration of the chromic anhydride is 200 to 300 g / L, thus the environmental pollution and the harm to the human body are lightened.

Description

technical field [0001] The invention belongs to the technical field of electroplating, and relates to an electric brush plating solution, in particular to a bright electric brush plating nano-chromium solution, and also relates to a preparation method of the bright electric brush plating nano-chromium solution. Background technique [0002] The chrome-plated layer has a silver-white appearance, good hardness, wear resistance and protection performance, and is widely used in industrial production. The chrome-plated layer prepared by brush chrome-plating technology has more superior performance. However, the chrome plating mechanism of brush chrome plating technology is very complicated, the operation requirements are harsh, the current efficiency of brush chrome plating is low, the deposition speed is slow, and the coating brightness is poor. These are the most important factors restricting the wide application of brush chrome plating technology. [0003] "Efficient Brush Pl...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of bright electric brush plating nano-chromium solution, can brush plating in wider temperature range, has reduced the concentration of chromic anhydride in the electric brush chrome plating solution, solves prior art chrome-plated layer color and luster gray and luster, brightness is poor and The problem of low wear resistance

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