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A method for treating the color gradient of a metal surface and a metal material obtained therefrom

A processing method and color gradient technology, which are applied to devices for coating liquids on surfaces, pretreatment surfaces, and surface reaction electrolytic coatings, etc., can solve the problem of inability to achieve gradient effects, and achieve the effect of improving decorative effects.

Active Publication Date: 2016-12-21
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it can only achieve linear gradients, and cannot achieve gradient effects from light to dark to light, radial gradients, diamond gradients, or gradients of multiple colors on a workpiece at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Put the aluminum metal workpiece in the alloy degreasing powder with a concentration of 50g / L, and perform degreasing and wax removal treatment at a temperature of 60±10°C for 4 minutes, and then in a NaOH solution with a concentration of 60g / L and a temperature of 70±10°C Perform alkaline etching treatment for 15s, and then place it in a 40% nitric acid solution for neutralization treatment to fully clean the surface.

[0040] Then anodize the aluminum alloy workpiece in the anodic oxidation solution; the concentration of sulfuric acid in the anodic oxidation solution is 180g / L, the aluminum ion concentration is 6g / L, the temperature of the anodic oxidation solution is 19-20°C, and the DC voltage is set as 15V, the oxidation time is 40 minutes.

[0041] Automatic spraying equipment is used to make monochromatic radial gradient samples, and water-soluble ink containing dye is sprayed on the surface of the workpiece. The main component of the dye is blue dye of model 419...

Embodiment 2

[0044] Put the aluminum metal workpiece in the alloy degreasing powder with a concentration of 50g / L, and perform degreasing and wax removal treatment at a temperature of 60±10°C for 4 minutes, and then in a NaOH solution with a concentration of 60g / L and a temperature of 70±10°C Perform alkaline etching treatment for 15s, and then place it in a 40% nitric acid solution for neutralization treatment to fully clean the surface.

[0045] Then the aluminum alloy workpiece is anodized in the anodic oxidation solution; the concentration of sulfuric acid in the anodic oxidation solution is 160g / L, the aluminum ion concentration is 5g / L, the temperature of the anodic oxidation solution is 19-20°C, and the DC voltage is set as 13V, the oxidation time is 35 minutes.

[0046] Automatic spraying equipment is used to make monochromatic radial gradient samples, and water-soluble ink containing dye is sprayed on the surface of the workpiece. The main component of the dye is red dye of model ...

Embodiment 3

[0049] Put the aluminum metal workpiece in the alloy degreasing powder with a concentration of 50g / L, degrease and dewax at a temperature of 60±10°C for 4 minutes, and then put it in a NaOH solution with a concentration of 60g / L and a temperature of 70±10°C Perform alkaline etching treatment for 15s, and then place it in a 40% nitric acid solution for neutralization treatment to fully clean the surface.

[0050] Then anodize the aluminum alloy workpiece in the anodic oxidation solution; the concentration of sulfuric acid in the anodic oxidation solution is 200g / L, the aluminum ion concentration is 10g / L, the temperature of the anodic oxidation solution is 19-20°C, and the DC voltage is set as 16V, the oxidation time is 30 minutes.

[0051] Take out the workpiece and wash it fully, and then use an oven to dry it at a temperature of 85°C for 6 minutes.

[0052] Use automatic spraying equipment to make monochromatic radial gradient samples, and spray water-soluble ink containing...

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PUM

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Abstract

The invention provides a metal surface treatment method, which mainly includes the following steps: anodic oxidation treatment, gradient spraying treatment, coloring treatment, ink removal treatment and hole sealing treatment. In the present invention, the water-soluble ink containing dye is sprayed on the surface of the anodized film layer through gradient spraying, and the single-color gradient effect is realized by controlling the thickness of the ink on the surface of the workpiece (that is, the amount of ink) or the spraying of multiple colors is used to make the surface of the workpiece Realize multi-color gradient effects, which can realize various gradient effects such as linear gradient, radial gradient, diamond gradient, etc., greatly improving the decorative effect of the metal surface.

Description

technical field [0001] The invention relates to the field of surface treatment, in particular to a metal surface treatment method. Background technique [0002] At present, in metal surface decoration, the realization of gradient color is mainly realized by direct spraying or printing on the surface of the metal workpiece. For the gradation of high-end digital shell decoration, spraying is the most common method. Through the control of spraying equipment, one or several color gradations can be obtained. It can realize the gradual change of various colors, and there are many forms of gradual change, but the existing sprayed surface decoration layer is a paint film, and due to the poor bonding force between the paint film and the metal, it is easy to fall off during use; at the same time, due to the paint film The low hardness is easy to scratch and wear during use, and its surface is easy to lose luster. The influence of these factors limits its application in the surface de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/02B05D7/14B05D3/10
CPCC25D11/243C25D11/08C25D11/16C25D11/246
Inventor 高春楠陈梁
Owner BYD CO LTD
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