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Marking of an anodized layer of an aluminium object

A component, marking technology, applied in the direction of copying/marking methods, processes for producing decorative surface effects, temperature recording methods, etc., capable of solving problems such as preventing coloring of anodized layers

Inactive Publication Date: 2004-11-03
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem here is that in many cases it is necessary to provide surfaces with, for example, alphanumeric symbols, emblems, operating instructions, or decorative lines, patterns or other structural indications
Although the remaining conversion layer forms a protective layer and prevents the part of the anodized layer adjacent to the formed mark from breaking, this method of marking the anodized layer has the disadvantage that the marked anodized layer thickness is formed. Actually reduced by 25-70 (μm), this disadvantage is not conducive to the use of the layer as a sliding layer such as an electric iron
The disadvantage of this method is that a special treatment is necessary to add a contrast-bleaching substance under the influence of laser radiation, and the necessity of adding a contrast-bleaching substance under the influence of laser radiation prevents the coloring of the anodized layer

Method used

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  • Marking of an anodized layer of an aluminium object
  • Marking of an anodized layer of an aluminium object
  • Marking of an anodized layer of an aluminium object

Examples

Experimental program
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Effect test

Embodiment Construction

[0023] The part shown in the example figure is the bottom 1 of a steam iron with an outlet 2 for the passage of steam and markings such as: dots of the zone 3, lines 4, and numerals like typefaces 5 .

[0024] The bottom 1 is composed of a substantially plate-shaped substrate 6 made of aluminum alloy and an anodized outer layer 7 forming an ironing surface 8 of the bottom 1 . this is in Figure 2 to Figure 4 , which are micrographs at magnifications of 625X, 2500X and 10,000X, respectively.

[0025] The area of ​​surface 8 forming the markings 3 to 5 can be visually distinguished by the human eye from other parts of surface 8 because it has visual properties different from the corresponding visual properties of adjacent and other parts of surface 8 . The different visual properties of the areas forming the surface 8 marked 3 to 5 in this example are the chroma and gloss of these areas. These areas are gray-black to black in shade and somewhat less glossy than the rest of th...

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Abstract

A marking (3 to 5) is provided in a surface (8) of an element (1) which comprises a substrate (6) of aluminum or an alloy thereof and an anodized outer layer (7) in that a region (10) of the surface (8) is irradiated with a laser beam such that at least one visual property of the surface (8) in said region (10) is changed and a visual marking (3 to 5) is obtained which is observable to the human eye. The laser beam penetrates the anodized outer layer (7) at least to a major degree and induces the change in the at least one visual property substantially locally only in a zone (9) where the anodized outer layer (7) adjoins the substrate (6).

Description

technical field [0001] The invention relates to a method of marking the surface of a component comprising a substrate of aluminum or its alloys having an anodized outer layer. The invention also relates to components with anodized surfaces. Background technique [0002] The protective layer of aluminum products obtained by anodizing usually has high hardness, high wear resistance, good adhesion to the substrate, and good heat resistance. This makes anodized surfaces ideal for use as surface protection for items that come into strong contact with other surfaces, such as irons, razors, door handles, buttons, etc. The problem here is that in many cases it is necessary to provide surfaces with eg alphanumeric symbols, emblems, operating instructions, or decorative lines, patterns or other structural indications. In this case, it is important that at least the markings of the above items basically have no worse performance than the anodized layer, otherwise the marking will be ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/00B23K103/10B41M5/26B44B7/00B44C1/00B44C1/22C23C26/02C25D11/18
CPCB41M5/262B44C1/005B44C1/228C25D11/18B44B7/002C23C26/02Y10T428/24802
Inventor K·K·耶奥
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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