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Method for making patterns on metal surfaces

A metal surface and pattern technology, applied in the field of pattern making, can solve problems such as poor hand feel, metal distortion, and inability to achieve results, and achieve the effect of improving appearance and product quality.

Active Publication Date: 2009-09-02
LENOVO (BEIJING) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the process of realizing the technical solution in the embodiment of the present application, the inventor found that the above-mentioned prior art has at least the following problems: the existing aluminum panel plus sandblasting oxidation process still has shortcomings and cannot achieve a higher effect, such as only Through one oxidation, only one pattern color can be produced, and the color of the metal itself is formed in the place without oxidation, which is very monotonous
Moreover, the display of the metal itself is easily oxidized by air and distorted
The hand feeling of primary oxidation after surface treatment is not good

Method used

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  • Method for making patterns on metal surfaces

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Embodiment 1

[0023] One embodiment of the present invention proposes a method for making a pattern on a metal surface, which mainly includes: forming a predetermined shape of the metal and a surface to be patterned by a stamping process, preferably a flat surface;

[0024] Sandblasting, grinding and polishing the metal surface, the process conditions are to use 120 mesh sand, and the blowing pressure is 2.0-2.5Kgf / cm 2 , sandblasting twice;

[0025] Cleaning and oxidation of the ground and polished metal surface: first, alkali etching, soaking in a solution of 200g / L sodium hydroxide and 150g / L sodium nitrate for 20-30 seconds at a temperature of 90°C; then electrolytic polishing, using A mixed solution of phosphoric acid and sulfuric acid is used as the electrolyte at 100°C for 160-240 seconds; then anodic oxidation is carried out in a sulfuric acid solution with a concentration of 150-250g / L at a temperature of 23.5°C and a voltage of 13.5V for 20- 30 minutes; sealing: 5-10g / L DX-500 so...

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Abstract

The invention relates to a method for making patterns on metal surfaces, which includes the steps as follow: blasting the metal surface twice with 120-mesh sand under the blast pressure of 2.0 to 2.5 Kgf / cm <2>; washing and oxidizing the ground metal surface; firstly corroding the ground metal surface by alkali and then processing in an electrolytic polishing way and than in an anodic oxidizing way, and then sealing holes; and corroding and oxidizing the metal surface, so that the metal surface which is not printed with photosensitive glue is corroded to obtain a metal surface with preset patterns. The method includes the corrosion process, the corrosive liquid washing, the anodic oxidizing process and the hole sealing, wherein the corrosion process uses sodium hydroxide and sodium nitrite solution and lasts 300 seconds to 500 seconds; degumming liquid is used for removing photosensitive glue; the anodic oxidizing process is carried out for 20 minutes to 30 minutes in sulfuric acid solution with the concentration of 150 to 250 g / l, at the temperature of 20 DEG C to 25 DEG C and the voltage of 13.5 V. The embodiment of the invention adopts the aluminum-corrosion secondary oxidizing process to obtain panels with patterns, thereby greatly improving the appearance effect of panels.

Description

technical field [0001] The invention relates to a method for making a pattern, in particular to a method for making a pattern on a metal surface. Background technique [0002] Existing a lot of metal products, in order to increase the visual effect of its appearance, usually can design some patterns or pattern on the surface of metal products. The method of producing patterns on the metal surface generally adopts etching process. For mass-produced metal products, it needs to pre-design the pattern, and then transfer the preset pattern to the metal surface by pattern transfer, and then use the etching process to etch according to the preset pattern on the metal surface. A metal product with a predetermined pattern is thus obtained. In the process of realizing the technical solution in the embodiment of the present application, the inventor found that the above-mentioned prior art has at least the following problems: the existing aluminum panel plus sandblasting oxidation pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B44C1/22B24C1/04C23G1/14C25F3/16C25D11/02C23F1/02
Inventor 文家福李晓忠范小利
Owner LENOVO (BEIJING) LTD
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