Electroplating solution and method for forming color plating

A technology of electroplating solution and content, applied in the direction of electrolytic inorganic material plating, coating, electrolytic coating, etc., can solve complex problems and achieve the effect of simple operation, firm coloring and uniform color

Inactive Publication Date: 2010-06-09
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The object of the present invention is to overcome the method for the electroplating color film existing in the above-mentioned prior art that the bright nickel coating must first be plated on the surface of the base material, thereby relatively complicated defects, and to pro

Method used

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  • Electroplating solution and method for forming color plating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Work piece: choose stainless steel with type 314 (100×50×10mm)

[0036] 1. Chemical degreasing

[0037] The workpiece was immersed in the degreasing liquid at 60°C for 6 minutes. The degreasing liquid is an aqueous solution containing 80 g / L of sodium hydroxide, 30 g / L of sodium carbonate, 12 g / L of sodium silicate and 30 g / L of trisodium phosphate. Then remove the workpiece and wash it with water.

[0038] 2. Pickling activation

[0039] Soak the substrate after the above degreasing in the pickling solution at room temperature for 2 minutes. The pickling solution is an aqueous solution obtained by adding 36% hydrochloric acid to 50 ml / L. Then remove the workpiece and wash it with water.

[0040] 3. Electroplating color coating

[0041] The above-mentioned activated workpiece is used as the cathode and immersed in the electroplating solution at 50°C, and the lead-tin alloy is used as the anode. The pH value of the electroplating solution is 6.6, the voltage is 2V,...

Embodiment 2

[0060] Workpiece: select the same workpiece as in Example 1

[0061] The workpiece was electroplated according to the method described in Example 1, except that, after the workpiece was electroplated, the electroplated workpiece was immersed in hot water at 70° C. for 5 minutes for hot water washing.

Embodiment 3

[0063] Workpiece: Zirconium alloy of Zr-2 type (100×50×3mm)

[0064] 1. Chemical degreasing and pickling activation

[0065] Chemical degreasing and pickling activation were performed in the same manner as described in Example 1.

[0066] 2. Electroplating color coating

[0067] The above-mentioned activated workpiece is used as the cathode and immersed in the electroplating solution at 40°C, with stainless steel as the anode, the pH value of the electroplating solution is 5.0, the voltage is 1.5V, and the current density is 0.3A / dm 2 Electroplate the workpiece for 10 minutes under certain conditions, and immerse the above-mentioned electroplated workpiece in hot water at 60°C for 2 minutes for hot water washing.

[0068] The electroplating solution is an aqueous solution containing 30 g / L of lactic acid, 50 g / L of boric acid, 15 g / l of molybdic acid, 60 g / l of phosphoric acid, 1 g / l of allylsulfonic acid and 3 g / l of 3-ethylhexyl stearate. Then remove the workpiece and was...

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Abstract

The invention provides electroplating solution, which is aqueous solution containing molybdic acid and/or molybdate, phosphoric acid, unsaturated sulfonic acid and/or unsaturated sulfonate, octyl stearate, lactic acid and boric acid, and the pH value of the electroplating solution is 5 to 8. The invention also provides a method for forming color plating by using the electroplating solution of the invention. According to the electroplating solution and the method for forming the color plating, a bright nickel layer is not required to electroplate on a base material first, and a color plating which has even and bright color, solid coloring, good weather fastness and corrosion resistance, and high adhesion can be obtained; thus, the method is simple to operate.

Description

technical field [0001] The invention relates to an electroplating solution and also relates to a method for electroplating a colored coating. Background technique [0002] Metal coloring is an important part of metal finishing. Through heat treatment, chemical impregnation or electrochemical reaction, films with various colors can be obtained on the metal surface. This film layer is a functional modification layer, which not only gives the metal surface a beautiful appearance It not only improves the appearance of the surface, but also improves the surface finish and cleanliness, and enhances the corrosion resistance of the metal. [0003] Color plating is deposited on the cathode in the electrolytic cell through electrochemical reactions, including primary colors (red, yellow, blue), secondary colors (orange, green, purple), secondary colors (blue-green, yellow-green, olive green, tea brown, yellow orange) , red purple, etc.) and the coatings of these colors mixed with pol...

Claims

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Application Information

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IPC IPC(8): C25D9/00C25D9/08
Inventor 唐发德李金儡文瑶
Owner BYD CO LTD
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