JPH07188981A - Metallic material formed with patterns appearing and disappearing with changing hues and its production - Google Patents

Abstract

PURPOSE:To obtain a decorative surface of hues changing three-dimensionally or dynamically according to conditions by forming, in parallel, patterns consisting of many fine grooves appearing and disappearing according to incident angles of light or visual angles on a film formed on the front surface of a metallic material. CONSTITUTION:The surface of the metallic material is subjected several anodic oxidation treatments. Optical path differences are generated between the reflected light atop the formed metal oxide layer and the reflected light by the metallic surface, by which the interference colors meeting the optical path differences are generated. Contour shapes of elements constituting the patterns are transferred on the front surface of this anodically oxidized film. The transfer diagrams of the respective elements are formed by inscribing many fine grooves extending in the same direction in a desired axial line 12 and working these lines to rugged surfaces paralleling at microintervals. The surface of the metallic material is otherwise worked to the rugged surface and thereafter, the anodically oxidized film is formed thereon. As a result, dot patterns, etc., of the changing phases and hues are formed and are visually sensed as if these patterns change three-dimensionally or dynamically.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal material having a decorative surface having a pattern that appears and disappears with a change in hue, and a method for manufacturing the same.

[0002]

2. Description of the Related Art Metallic materials, especially aluminum or aluminum alloy materials, are similar to stainless steel materials in kitchens,
It is often used in various fields such as construction, vehicles, and ships, and is often used for ornaments. Since these are often exposed to the human eye, by applying a pattern or coloring with the surface It is possible to differentiate products.

This patterning is usually carried out by mechanically subjecting the surface of the metal material to uneven processing. That is, sand blasting in which sand or granular abrasives are sprayed on the surface of metal materials with compressed air or centrifugal force.
Method, and for processing directional uneven surfaces, the hair-line finish (hair-line f
inish) or a belt with abrasives (belt sanding)
Also known is a method of using a brushing planted with a brush made of piano wire, stainless steel wire, brass wire, or the like.

With regard to the spin pattern, in particular, a diamond-cut finish is used for attaching diamonds to a lathe, and various shapes of diamonds are formed by a running engine with numerical control for high precision. A method is known in which a groove is cut into a saw-tooth shape with a cutter, or a multi-axis milling machine in which a plurality of milling cutters are alternately attached is used for processing.

Further, in Japanese Patent Laid-Open No. 50-67240, the surface of an aluminum plate or foil is treated by mechanical surface treatment,
It is disclosed that after a directional uneven pattern is processed, a crater-like pattern is formed by etching, and then an oxide film is formed by anodizing. Further, Japanese Patent Laid-Open Publication No. 50-22663 discloses a watch exterior part that has a spin pattern revealed by machining and is optionally subjected to surface treatment such as painting, plating, vapor deposition, printing, alumite, and dyeing. There is a description about. Further, Japanese Patent Publication No. 59-40238 discloses that a matte portion is patterned on aluminum or aluminum alloy having a glossy surface by chemical, electrochemical or mechanical means, and then an anodized film is formed. It is disclosed that after the treatment, it is electrolytically colored or dip-colored so that the satin area is lighter than the glossy area to make the pattern clear.

However, the pattern obtained by each of the above-mentioned methods has only high brightness, emits a kind of precious stone-like luster, or is three-dimensionalized by the difference in luster and color tone. , And patterning with higher added value is being sought.

On the other hand, a method is also known in which the surface of an aluminum or aluminum alloy material is subjected to an electrolytic treatment so as to be decorated by coloring. A typical example of this aluminum coloring is the formation of an anodized film called alumite, and this anodized film has a color tone such as silver or gray. As the coloring method, not only the natural coloring method (referred to as primary electrolysis) but also the electrolytic coloring method (referred to as secondary electrolysis) is mainly used, and there are bronze-based color tones such as stain color, bronze, and brown. Therefore, in the past, selection was limited to within a very limited range of color tones, but in recent years, a new aluminum material or aluminum alloy material that produces color due to the interference of light (hereinafter referred to as interference color) has been newly added. With the establishment of technology for surface treatment methods, the application of this interference color to the decoration of aluminum materials is being investigated.

Here, in order to obtain the interference color, a multi-order electrolysis treatment is effective, which is classified by the number of electrolysis in the electrochemical treatment. That is, as an example of the multi-order electrolysis step, degreasing (removing oil and fat adhering to the surface) -etching (removing the aluminum oxide film on the surface and adjusting the surface roughness of the aluminum material) -desmut (neutralization) And removing smut) -Primary electrolysis (forming anodic oxide film) -Secondary electrolysis (special treatment for causing light interference) -Third electrolysis (same as above) ----- n
Next electrolysis (performs electrolytic coloring) -sealing (closes fine pores in the alumite surface layer to improve corrosion resistance) -coating (to secure corrosion resistance) -baking (to cure paint).

Further, as to a primary color electrolytic coloring method utilizing interference color on an aluminum material having an anodized film, Japanese Patent Publication No. 54-13860 discloses that an anodized film is formed by primary electrolysis and secondary By using a phosphoric acid or pyrophosphoric acid-based electrolytic bath in electrolysis, the bottom volume of the micropores in the anodized film layer is expanded, and electrolytic coloring is performed in tertiary electrolysis, and the height of electrolytic deposits is increased. It is disclosed that a uniformized optical path difference is generated between the reflected light on the upper surface of the electrolytic deposit and the aluminum metal surface, and an interference color corresponding to the optical path difference is generated.

Further, as a method for making the color tone uniform, Japanese Patent Publication No. 59-48960 discloses a barrier type oxidation prior to the electrolytic treatment after enlarging the fine pores present in the anodized film. The process of forming a film is described. In addition, Japanese Patent Publications No. 54-23658 and 58-5203
You can refer to each bulletin, etc. With these technologies,
The reproducibility of a colored film having an arbitrary color tone such as purple, blue, green and yellow and excellent in uniformity and color tone stability was improved. However, the aluminum materials obtained by these methods can only obtain a decorative property that is a mosaic-like color harmony as an aluminum material having an interference color, and in this case also, a pattern with a higher added value is sought. Has been done.

[0011]

The aluminum material or aluminum alloy material used in all of the above fields is based on silver, gray, bronze, amber, brown, etc., and has a glossy surface. Matting or embossing as a pretreatment (embossi
ng), sand blasting or hairline finishing. Since the pattern applied to the surface is based on the above-mentioned known technique, the differentiation of products in the current situation is limited. This fact is the reason why a new and unprecedented patterning is expected.

Therefore, according to the present invention, an unprecedented novel pattern, that is, a pattern appears and disappears with a change in hue depending on the situation, and the pattern acts visually as a three-dimensional or dynamic change. It is an object to propose a metal material having a decorative surface and a method for manufacturing the same.

[0013]

According to the present invention, a coating formed on a surface of a metal material, which produces interference color, has a pattern composed of a concavo-convex surface in which a plurality of narrow grooves extending in the same direction are arranged in parallel, The pattern appears and disappears in accordance with at least one of the incident angle of light and the viewing angle of an observer, and the metal material in which the pattern appears and disappears with a change in hue, and the surface of the metal material in the same direction. The metal material has a pattern composed of a concavo-convex surface in which a plurality of extending narrow grooves are arranged in parallel, and a coating that forms an interference color is formed on the surface of the metal material. The pattern has at least the incident angle of light and the viewing angle of an observer. It is a metal material in which a pattern appears and disappears with a change in hue, which is characterized by appearing and disappearing depending on either one.

Here, in the above-mentioned coating, the metal oxide is deposited in the fine pores by the anodizing treatment of several orders and the bottom is enlarged, or the barrier layer is increased or adjusted, so that the metal is An optical path difference is generated between the reflected light on the upper surface of the oxide layer and the reflected light on the aluminum metal surface, and an interference color corresponding to the optical path difference is generated, which is formed on the surface of the metal material.

In the above pattern, a single element formed by an uneven surface formed by fine grooves extending in one direction, a coupling element connecting a plurality of the single elements, or a plurality of the single elements arranged in proximity to each other. It is advantageous that the plurality of pattern elements are dispersed patterns arranged in appropriate positions and the plurality of pattern elements are the solidarity patterns arranged in series. Is. In addition, it is preferable that the surface of the metal material has concave portions and / or convex portions on the patterned decorative surface.

Further, in the production of the metal material of the present invention, after forming an anodized film on the surface of the metal material, the contour shape of the elements constituting the pattern is directly or indirectly transferred to the surface of the film, A method characterized in that the transferred figure of each element is processed into a concavo-convex surface in which a large number of fine grooves extending in the same direction are arranged in parallel at minute intervals, and the contour shape of the elements constituting the pattern is directly or directly formed on the surface of the metal material. A method characterized by forming an anodized film on the surface after indirect transfer and processing the transferred figure of each element into a concavo-convex surface in which a large number of fine grooves extending in the same direction are arranged in parallel at minute intervals is advantageous. Fits. And
In practice, it is recommended in practice that the axial direction of the grooves forming the elements of the pattern changes for each element.

Here, as the metal material, a metal, especially a plate material of aluminum or an aluminum alloy, for example, a flat plate, a curved plate, a corrugated plate, a bent plate, etc., and a pipe material or an extruded shape material are suitable.

[0018]

The metal material of the present invention is provided with a pattern that appears and disappears according to at least one of the incident angle of light and the viewing angle of an observer on the film that causes interference color, or the surface of the metal material provided with the pattern. In addition, a film that forms an interference color is formed. That is, it is characterized by the combination of the appearing and disappearing pattern and the film that gives the pattern a change in hue.

First, a film that produces an interference color can be obtained by electrolytic treatment of multiple orders, specifically, a tertiary order or higher.
The reason for this will be described below. In the conventional electrolytic coloring by secondary electrolysis, an anodic oxide film (also called alumite or an alumite layer) is formed by primary electrolysis, and this anodic oxide film is a porous layer with many pores like a honeycomb. And a barrier layer made of dense aluminum oxide. This anodic oxide film is transparent to visible light, and when not subjected to a coloring treatment, the appearance of the aluminum material is silver, which is the original color of aluminum. Next, in the secondary electrolysis, certain metal oxides are deposited and filled in the fine pores of the porous layer formed by the primary electrolysis. In this conventional secondary electrolytic coloring, the light impinging on the surface of the anodic oxide film is reflected or absorbed by the metal oxide layer, and the reflected light is weakened so that the brightness decreases. The hue changes from sten color to bronze to black depending on the height (filling amount) of the metal oxide layer. The height of the metal oxide layer is about several μm.

On the other hand, after electrolytic coloring by tertiary electrolysis, the light hitting the surface of the anodic oxide film is transmitted through the film layer which is transparent to visible light, and the metal oxide deposited on the bottom of the porous layer is oxidized. It becomes reflected on the surface of the object layer. Also, some light is transmitted through the metal oxide layer and reflected on the surface of the aluminum material. When these two kinds of light are combined, a light interference phenomenon occurs. This is due to the optical path difference between the two types of light. For example, in a blue / gray-based film, of the seven colors, the energy of the wavelength of light corresponding to blue is emphasized, so that it appears blue.

The largest factor that determines the optical path difference of light is
The height of the metal oxide and the height of the barrier layer. This height is set to about 100 nm, and the wavelength of visible light (red: 700 nm to blue: 400 n
It is preferable to adjust to an order substantially the same as that of m). Therefore, while the color tone (brightness) adjustment of the conventional secondary electrolytic coloring is on the micron order, the
Techniques for controlling thin films within the meter range are required. In addition, in order to increase the reflection of light on the surface of the metal oxide, the bottom volume of the porous layer is expanded (called pore widening), and a technique for adjusting the barrier layer is also required. In order to satisfy these requirements, it is effective to further develop into fourth-order electrolysis, and multi-order electrochemical treatment is advantageous. The above treatment method is referred to as an n-th electrolysis method (n is the number of electrolysis treatments).

Further, according to the present invention, an uneven surface is formed on the surface of the metal material by mechanical surface treatment, in which a large number of fine grooves (hereinafter referred to as engraved lines) extending in the same direction are arranged in parallel at minute intervals, A pattern that appears and disappears according to a change in either or both of the incident angle and the viewing angle of the observer.

Next, the form of the pattern will be described in detail. First, the constituent elements of the pattern can be classified into a single element, a connecting element and a collective element. That is, a single element consists of an uneven surface in which scribe lines extending in one direction are arranged side by side, a coupling element is a connection of a plurality of this single element and a collective element is a plurality of single elements spaced from each other. It was collected by. Each of these elements forms an independent pattern, but these elements are combined to form the overall pattern described below.

The single element is one in which the entire pattern is composed of an uneven surface formed by unidirectional carving lines. Regarding the pattern consisting of this single element, a square pattern is shown as an example in FIG. 1 (a). ~
This is specifically shown in (d). For the sake of convenience, the description will be given with reference to the pattern of vertically extending scribing lines on the paper surface shown in FIG. 1 (a).
The figure (c) shows a pattern consisting of score lines extending at a right angle of 45 °, and the figure (d) shows a pattern consisting of score lines extending at a slope of 45 ° left. These square patterns are bright and dark patterns when either one or both of the incident angle of light and the viewing angle of the observer satisfy a predetermined condition with respect to the axial direction of the engraving line forming each pattern. Appear and disappear.

Next, the connecting element is a plurality of the above single patterns,
The axes of the engraved lines of each single pattern are connected in different directions. As for the connecting element, an example of a square pattern is shown in FIGS. 2 (a) to 2 (d) as in the above case. Same figure
(a) is a pattern in which a rectangle formed by the vertical half lines in the left half and a rectangle formed by the right half lines in the horizontal direction are combined to form a square. These square patterns are such that when either or both of the incident angle of light and the viewing angle of the observer satisfy a predetermined condition with respect to the axial direction of the engraved line forming each pattern, either the left or right rectangle becomes bright or dark. A square pattern or a rectangular pattern on either side appears.

Further, FIG. 2 (b) shows that the isosceles right triangle formed by the engraved lines extending in the vertical direction and the isosceles right triangle formed by the engraved lines extending in the horizontal direction are connected to each other by oblique sides to form a square. It seems to have been done. In this square pattern, when one or both of the incident angle of light and the viewing angle of the observer satisfy a predetermined condition with respect to the axial direction of the engraved line forming each pattern, one of the triangles becomes bright and dark. Square patterns, isosceles right triangles with hypotenuse up, and isosceles right triangles with hypotenuse appear.

Further, FIG. 7 (c) shows a pattern in which two triangles formed by vertical engraving lines and two triangles formed by horizontal engraving lines are alternately joined to form a square. The figure (d) shows two triangles composed of vertical lines and two horizontal lines.
2 consisting of three triangles and a score line extending at an angle of 45 ° to the right
2 consisting of three triangles and an engraved line extending at an angle of 45 ° to the left
It is a pattern in which two triangles are alternately joined to form a square. These square patterns also appear and disappear depending on either or both of the incident angle of light and the viewing angle of the observer with respect to the axial direction of the engraved line forming each pattern, or the patterns themselves change variously.

What has been described above means that even with an independent pattern composed of one element, the appearance and disappearance of the pattern is diversified depending on the incident angle of light and the viewing angle of a person with respect to the axial direction. The pattern acts visually as a three-dimensional or dynamic change, in addition to the light and darkness of the appearing and disappearing pattern, as well as being affected by changes in the directionality and position of the appearing and disappearing pattern.

Finally, the set pattern is a pattern in which the rectangles and triangles in the above-mentioned connecting pattern are not connected to each other but are set at intervals, and a specific example thereof is shown in FIG. )-(D) are shown in FIGS. 3 (a)-(d). For example, in the square pattern shown in FIG. 3 (c), four right-angled isosceles triangles are equidistantly arranged at the apexes by providing intervals on the diagonal of the square. Depending on one or both of the incident angle of light and the viewing angle of the observer with respect to the axial direction of the engraved line forming each pattern, the appearance and disappearance of any of the upper and lower patterns and the left and right patterns
The four right-angled isosceles triangles become light and dark squares, or by the appearance of either top or bottom or left and right, they appear and change as vertically symmetrical or left-right symmetrical patterns, or other combinations of patterns. Appears and appears. That is, the appearance and disappearance of the patterns means that the patterns are more diverse than the combined patterns.

Further, the whole pattern can be classified into a dispersed pattern and a continuous pattern. That is, the dispersed pattern is a pattern that is dispersed and arranged in appropriate positions in appropriate directions when various patterns selected from the above-mentioned single element, connecting element, and collective element are combined. As shown in FIGS. 4 (a) to 4 (d), a specific example of this dispersed pattern makes the appearance and disappearance of the pattern detailed in the above-mentioned independent pattern more diversified. Substantially more complicated haunting than illustrated.

The solidarity pattern is a pattern in which the patterns selected from the single element, the coupling element and the collective element described above are arranged in a proper direction and arranged in series. As shown in FIGS. 5 (a) to 5 (d), a specific example of this continuous pattern, the appearance and disappearance of the pattern described in detail in the above independent pattern is diversified with continuity. Substantially, the appearance is more complicated than the illustration, as is the case with the dispersed pattern.

The metal material may be a plate material such as aluminum or aluminum alloy, a pipe material, or an extruded shape material, and it is desired that the material satisfy JIS specified by application. For example, as interior and exterior materials for construction,
JIS A1050P-H14, A1100P-H18 and A6063S-
T5, etc., and the plate thickness is not particularly limited, but is usually 3
~ 6 mm is used. Further, the thickness of the film is preferably 10 μm or more in order to cause the corrosion resistance and the interference phenomenon of light. During transportation and storage, it is necessary to attach a curing sheet to prevent defects. Note that other metal materials include stainless steel and the like, but their own film formation and coloring treatment are required.

In applying a pattern to this metal material, especially when it is desired to enhance the decorativeness due to the unevenness of the metal material itself,
As a pretreatment, the surface of the metal material is shaped according to the outer contour of the pattern, etc. to provide appropriate irregularities, and then the large irregularities are used as a decorative surface to form a pattern on this decorative surface.
That is, a rough sketch of a desired pattern shape is directly drawn on the surface of a metal material, and the entire aspect of the pattern and the appearance of the pattern are envisioned, and the axial direction of the directional engraving lines (hereinafter, simply (Referred to as the axial direction). In addition, if necessary, a template made of stainless steel having a thickness of 0.05 to 0.1 mm or a sheet similar to this, which is cut out according to the pattern, is used to indirectly transfer the rough sketch to the surface of the metal material. At this time, the pattern becomes smaller than a predetermined dimension depending on the plate thickness of the template, and therefore, the dimension is set to be considerably large in advance. Preferably, since it is difficult to correct the axial direction after forming the engraved lines, if the die plates having the same pattern in the axial direction of the engraving lines are cut out instead of using only one die plate, the axial direction is always maintained. It is possible to arrange them evenly.

The formation of the score line is required for the manufacturing on a factory scale.
This is done with abrasive papers. As abrasive paper, # 40, 50, 60, 80, 100 according to JIS R6252-1992
, 120, 150, 180, 220, 240, 280, 320, 400
, 500, 600, select an abrasive paper with an appropriate particle size (No.) (it does not have to have the same particle size but may be a combination with different particle sizes), and make the abrasive paper a rectangle with an appropriate width and length. Provide for processing. Then, the abrasive paper is moved, for example, along a guide ruler while uniformly pressing in one direction on the outward path, and this work is repeated once or several times to visually form a large number of narrow grooves extending in the same direction. Engraving is performed at an appropriate angle so as to form a concavo-convex surface with uniform engraving arranged in parallel at minute intervals. It should be noted that # 320 and the particle sizes before and after # 320 are suitable for the abrasive paper. Because when the grain size becomes finer, for example, #
With 600, it becomes a mirror surface or an uneven surface with weak light and darkness is obtained, but it is impossible to expect the appearance of a clear pattern. On the other hand, if the grain size becomes coarse, for example, in # 120, an uneven surface with strong light and dark can be formed, but uneven evaluation of uneven lines is conspicuous in close-up observation, and the finish evaluation deteriorates. However, since the finish evaluation changes depending on the application, use environment, and individual preference, an appropriate grain size may be selected depending on the case.

By the way, the coating surface provided on a metal material conforming to JIS B0601 and having a maximum curve height R _{max of} cross section and a ten-point average roughness R _Z of R _max = 5.38 μm and R _Z = 3.48 mm, respectively. in, # 120, when performing processing by abrasive paper 320 and 600, indicating R _{ma x} and R _Z, ♯
For 120, R _max = 11.74 mm and R _Z = 9.56 mm,
In case of # 320, R _max = 4.62 mm and R _Z = 3.06 mm,
And in the case of # 600, R _max = 3.68 mm and R _Z = 3.18
mm.

Similarly, the maximum curve height R of the cross section_maxand
Ten-point average roughness R_ZIs R_max= 1.62 μm and R
_Z= 1.26mm metal material surface, # 120, 320 and 600
R when processed with abrasive paper_maxAnd R_ZTo
In case of # 120, R _max= 26.00 mm and R_Z
= 20.24 mm, R for # 320_max= 9.92 mm and R
_Z= 6.86mm, and R for # 600_max= 2.80 mm and
And R_Z= 2.36 mm.

It is preferable that the size of the abrasive paper is formed to a width corresponding to the pattern width in the axial direction of the cut template, and if possible, the area where the abrasive paper is used is cut once or every several times. Make it possible to always engrave at a new part by cutting it off or changing the position.

Although the above-mentioned abrasive paper is advantageous in that it is easily available at low cost, it is not always suitable for work, and for the work, it is a tool for work or a hard (4H-9H) pencil-like tool. Will be required. For example, eraser is commercially available for fine, medium and coarse abrasives mixed with abrasives with a particle size of 50 to 100 mesh, and there are pencil type, electric type etc. depending on the application, and it can be applied as a tool. Is. A specific example of this tool is shown in FIG. This tool is equipped with engraving blades, pencil-like or scribing-like engraving blades with various shapes shown in Fig. (B) on the holder shown in Fig. (A), or Attach the abrasive paper, which has the folded portion to the tip, to the core material shown in (4), and attach it to the core material so that it can be freely attached.

In order to unify the machining of the engraved lines in one direction in the outward direction of the vertical axis, it is difficult to adjust and maintain the engraved lines in a reciprocating repetitive work unless the operator is skilled. This is because it is not a score line but a glossy surface. That is, in the case of the outward path in the direction of the vertical axis, it is possible to check the density of the engraved lines and adjust the pressing force against the metal material, and at the same time, the finish can be seen immediately.

Further, the guide ruler for assisting the scoring work is similar to the T ruler for drawing, and preferably has an angle adjusting function for inclining the axial direction of the scoring line,
That is, a device similar to a commercially available drafting machine, for example, shown in FIG. 7 is suitable. The illustrated device is a metal material 2 placed on a workbench 1.
The ruler 3 to be moved above is attached to a rail 4 provided at the end of the workbench 1 so as to be movable in the axial direction thereof and adjustable in angle with respect to the rail. It is equipped with a rotatable turntable. Therefore, the score line can be formed by inclining the axial direction of the score line at an appropriate angle. Here, the pressing angle of the score line is a problem because even if an abrasive having an appropriate grain size is selected, the desired uneven surface cannot be obtained unless the score line is formed at a substantially suitable press angle. It depends. Therefore, in order to avoid correction of the engraved line in the axial direction, it is advisable to check the pressing angle according to the grain size of the abrasive paper on the trial metal material (scrap material).

Next, an apparatus for realizing manufacturing on an industrial scale is shown in FIGS. 8 and 9. FIG. 8 shows that the metal material 2 which has been pretreated to form the pattern convex surface 2a in the area to be patterned shown in FIG. 8A is formed by the tool 5 shown in FIG. 8B. The case is shown. The tool is shown in Figure (c).
As shown in FIG. 5, a large number of flat engraving blades 6 are fixed to a base plate 7 so as to be movable in the axial direction thereof under a predetermined interval and arrangement. An adjusting weight 8 is attached to the upper part of each scored blade 6 to apply a load downward in the axial direction. And
By horizontally moving either the tool 5 or the metal material 2, the scoring blade 6 is constantly abutted against the pattern convex surface 2a of the metal material 2 under the action of the adjusting weight 8 during the movement, and The score line is surely formed.

Further, FIG. 9 shows that the metal material 2 which has been subjected to the pretreatment for forming a pattern concave surface 2b by a molding process in the area shown in FIG. 8A is engraved by the tool 5 shown in FIG. The case where a line is formed is shown. In this case, the metal material 2 is fixed so that the pattern concave surface 2b side faces downward, and below the metal material 2,
The tool 5 is arranged in such a direction that the score line blade 6 faces upward, and the copying plate 10 having the convex portion 9 corresponding to the pattern concave surface 2b is arranged below the tool 5, and the upper stage is interlocked with the horizontal movement of the copying plate 10. Of the metal material 2 is horizontally moved, the head 11 of the scribe line blade 6 follows the convex portion 9 of the copy plate 10 and the scribe line blade 10 moves up or down, so that the pattern concave surface 2b of the metal material 2 is directional. A score line is formed. If it is desired to emphasize a delicate pattern or even a design, the contour line 13 can be added by the tool 5.

Further, according to the above, the metal material having the pattern of directional markings on the surface is subjected to a usual surface treatment as a post-treatment, if necessary. As the surface treatment, for example, a treatment suitable for an application requiring corrosion resistance is selected.

FIG. 10 shows an example of a process diagram of the production according to the present invention including the post-treatment. That is, in the case of forming a pattern by engraving prior to the formation of the film, after degreasing the surface of the metal material after patterning and desmutting, 1
The electrolytic treatment is repeated for up to n times, then the sealing treatment is performed, and then the transparent resin is applied and baked to obtain a product. Further, when forming a pattern by engraved lines after forming the film, patterning may be performed after the sealing treatment. Here, the electrolytic treatment means that in the primary electrolysis, the anodic oxide film is
It is formed in an electrolytic bath that becomes an inorganic acid or an organic acid or a mixed acid thereof, and in the subsequent secondary to n-1 order electrolysis, a special treatment for generating an interference color, specifically, in the n-1 order electrolysis. Pore widening of fine holes formed by primary electrolysis is performed. Normally, electrolysis treatment is performed with a DC or AC waveform in an aqueous solution of a strong acid such as phosphoric acid or sulfuric acid.
In the nth-order electrolysis, AC electrolysis treatment is performed in an inorganic coloring bath containing a metal salt. Further, the pore-sealing treatment is to close the fine pores in the surface layer of the anodic oxide film to improve the corrosion resistance. Further, the transparent resin is applied by electrodeposition, dipping or electrostatic coating.

[0045]

【Example】

Example 1 In producing a metal material having the entire pattern of polka dots shown in FIG. 11 on a film producing interference color, each polka dot pattern in FIG. 11 was used as a single element, and each element was arranged to appear and disappear. Axis direction is vertical axis, horizontal axis, right 45 ° tilt axis and left 45 °
There were four types of tilt axes, and they were assigned. The template used was one type, and the abrasive paper was made of # 600 rectangular with an appropriate width, and engraved lines were formed with a tool. Each manufacturing process is shown below.

<First step> Aluminum plate (JIS A10
50P-H14) surface with a thickness of 10μ by the third electrolysis method.
An electrolytic colored film having a gray interference color of m was formed. That is,
In the primary electrolysis, an aluminum plate was anodized in a 150 g / l sulfuric acid bath at a current density of 1.2 A / dm ² for 30 minutes to obtain a 10 μm oxide film. Then, in the secondary electrolysis, 100g / l phosphoric acid and 50g / l
5 at 40V with aluminum plate as anode in sulfuric acid electrolytic bath
Anodize for a minute to make the bottom of the micropores pore wide. In addition, the third electrolysis coloring treatment was carried out in an aqueous solution of 40 g / l nickel sulfate and 40 g / l boric acid at a current density of 0.2 A / dm ² , 60
AC electrolytic treatment was performed for a second.

<Second step> Using boiling water, nickel acetate was added to this as a sealing aid at 3 g / l, and 98
The aluminum plate was immersed at 30 ° C. or higher for 30 minutes for sealing treatment.

<Third Step> On the electrolytically colored film after the sealing treatment, the template of the stainless steel plate shown in FIG. 11 (a), in which the whole pattern is cut out, is placed, and both are adhered with an adhesive tape. Fixed

<Fourth Step> For each single element, only the outward path was unified, and an uneven surface was formed by engraving at an appropriate pressing angle. The adjustment in the axial direction was performed by rotating the aluminum plate at an appropriate angle. Then, the template was removed.

In the metal material thus obtained, the appearance and disappearance of the pattern accompanied by the change in hue changed from FIG. 11 (b) to (c). In other words, it becomes a polka dot pattern with changes in phase and hue, and is visually perceived as changing three-dimensionally or dynamically.

Example 2 On the surface of a metal material, the entire pattern of polka dots shown in FIG. 11 was formed,
Then, when manufacturing a metal material with a film that produces an interference color, each polka dot pattern in the figure is a single element, and in order to appear and disappear the axial direction of each element is the vertical axis, horizontal axis, right There were four types of 45-degree tilt axis and left 45-degree tilt axis, and they were assigned. The template used was one kind, and the abrasive paper was made by cutting # 132 into a rectangle having an appropriate width and a score line was formed with a tool. Each manufacturing process is shown below.

<First Step> The template used in Example 1 was placed on the surface of the same aluminum plate as in Example 1,
Both were fixed with adhesive tape. <Second Step> The cut-out pattern portion of the template was unified with # 132 abrasive paper along the guide ruler only on the outward path, and the uneven surface was formed by engraving at an appropriate pressing angle. The adjustment in the axial direction was performed by rotating the aluminum plate at an appropriate angle. Then, the template was removed. <Third Step> The same third electrolytic treatment as in Example 1 is performed,
A metal material having a polka dot pattern under the electrolytically colored oxide film having a gray interference color was obtained.

In the metal material thus obtained, as in the case of Example 1, a pattern accompanied by a change in hue changed from appearance to appearance in FIG. 11 (b) to (c). The metal material obtained in Example 1 is whitish and the difference in lightness and darkness is small, whereas the metal material obtained in Example 2 has a slight color added to the pattern and the difference in lightness and darkness is large. there were.

Example 3 A metal material having the entire pattern of two butterflies, the face patterns of two girls or the pattern of one butterfly with a large wing, as shown in FIG. 12, was produced on the film which gives an interference color. In doing so, in order to make the pattern appear and disappear, combine single elements, connecting elements and collective elements, and set the axial direction of each element to vertical axis, horizontal axis, right 45 °, left 45
There were four types of items, and the allocation was done with the appearance of patterns in mind. Use one type of template, use # 320 abrasive paper, and make a carved line with a rectangle of an appropriate width.
The contour of each element was formed with a tool. Each manufacturing process is shown below.

<First Step> Aluminum plate (JIS A10
50P-H14) on the surface by a fourth-order electrolysis method, film thickness 10μ
At m, an electrolytic colored film having an interference color of pink was formed. That is,
In the primary electrolysis, an aluminum plate was anodized in a 150 g / l sulfuric acid bath at a current density of 1.2 A / dm ² for 30 minutes to obtain a 10 μm oxide film. Then, in the secondary electrolysis, an electrolytic treatment was performed in a 100 g / l phosphoric acid bath at an alternating current of 15 V for 5 minutes, and then in the same bath, an aluminum plate was used as an anode and anodization treatment of soft start control reaching 100 V in 60 seconds. . The color treatment for the fourth electrolysis is 5g / l stannous sulfate, 20g / l nickel sulfate,
AC electrolysis treatment was performed for 90 seconds at a current density of 0.3 A / dm ^{2 in} an aqueous solution containing 15 g / l sulfamic acid and 5 g / l tartaric acid.

<Second Step> Using boiling water, Example 1
The sealing treatment was performed in the same manner as in.

<Third Step> A single pattern of two butterfly patterns was cut out on the electrolytically colored film after the sealing treatment, as shown in FIG.
A stainless steel plate template shown in (a) was placed at a predetermined position, and both were fixed with an adhesive tape. <Fourth Step> For each element, only the outward path was unified, and an uneven surface was formed by engraving at an appropriate pressing angle. The adjustment in the axial direction was performed by rotating the aluminum plate at an appropriate angle. Then, the template was removed. <Fifth Step> The contour of the pattern was engraved with the tool in the axial direction being vertical.

In the metal material thus obtained, a pattern accompanied by a change in hue changed from appearance to appearance as shown in FIG. 12 (b) to (c). In other words, two butterflies with changes in phase and hue,
They can be seen in three-dimensional or dynamic changes, such as the profile of two opposing girls, or the appearance of a beautiful butterfly with one large wings.

Example 4 On the surface of a metal material, the pattern of two butterflies, the faces of two girls or the pattern of one butterfly with a large wing spread as shown in FIG. 12 was formed, and then the interference color was obtained. When manufacturing a metal material that forms a film that produces a pattern, in order to make the pattern appear and disappear, combine single elements, connecting elements and collective elements, and set the axial direction of each element to the vertical axis, horizontal axis, right 45 °, left 45 There were four types of items, and the allocation was done with the appearance of patterns in mind. One type of template was used, # 132 abrasive paper was used, and a rectangle having an appropriate width was used to form a score line, and a contour of each element was formed with a tool. Each manufacturing process is shown below.

<First Step> The template used in Example 3 was placed on the surface of the same aluminum plate as in Example 3,
Both were fixed with adhesive tape. <Second Step> The cut-out pattern portion of the template was unified with # 132 abrasive paper along the guide ruler only on the outward path, and the uneven surface was formed by engraving at an appropriate pressing angle. The adjustment in the axial direction was performed by rotating the aluminum plate at an appropriate angle. After that, a contour line was formed and the template was removed. <Third Step> The same fourth electrolytic treatment as in Example 3 is performed,
A metal material having an overall pattern of two butterflies, the facial patterns of two girls or one butterfly with a large spread wings was obtained under the electrolytically colored film whose interference color was pink.

In the metal material thus obtained, similar to Example 3, the appearance of the pattern accompanied by the change in hue changed from appearance to appearance in FIG. 12 (b) to (c). The metal material obtained in Example 3 is whitish and the difference in lightness and darkness is small, whereas the metal material obtained in Example 4 has a little color added to the pattern and the difference in lightness and darkness is large. there were.

[0062]

As described above, in the metal material according to the present invention, a light-dark pattern appears and disappears with a change in hue depending on one or both of the incident angle of light and the viewing angle of an observer, and changes three-dimensionally or dynamically. Then, since it acts visually, it is possible to present a novel impression pattern that has never existed before, and it is possible to obtain a metal material with high added value that satisfies the market demand.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a single element of a pattern.

FIG. 2 is an explanatory diagram showing a connecting element of a pattern.

FIG. 3 is an explanatory diagram showing aggregate elements of a pattern.

FIG. 4 is an explanatory diagram showing an overall view of a dispersed pattern.

FIG. 5 is an explanatory diagram showing the whole of a solidarity pattern.

FIG. 6 is a schematic view showing an example of a tool.

FIG. 7 is a schematic view showing an example of a guide ruler.

FIG. 8 is an explanatory view showing a manufacturing procedure according to the present invention.

FIG. 9 is an explanatory view showing a manufacturing procedure according to the present invention.

FIG. 10 is a diagram showing a manufacturing process of the present invention.

FIG. 11 is a plan view showing an example of a metal material that causes a change in appearance and disappearance of a full-scale pattern composed of a template and polka dots in Examples 1 and 2.

FIG. 12 is a plan view showing an example of a metal material that causes appearance changes of a template, a butterfly, and a girl in Examples 3 and 4.

[Explanation of symbols]

 1 Workbench 2 Metal material 2a Pattern convex surface 2b Pattern concave surface 3 Ruler 4 Rail 5 Tool 6 Marking blade 7 Base plate 8 Adjusting weight 9 Convex portion 10 Copying plate 11 Head 12 Axial direction 14 Marking line Contour line

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[Procedure amendment]

[Submission date] March 10, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction content]

By the way, the cross section according to JIS B0601
Curve maximum height R_maxAnd ten-point average roughness R_ZBut that's it
R_max= 5.38 μm and R_Z= On a metal material of 3.48 μm
Apply # 120, 320 and 600 abrasive paper on the surface of the coating
R when processed by _maxAnd R_ZIs shown,
In case of # 120, R_max= 11.74 μm and R_Z= 9.56
R for μm and # 320_max= 4.62 μm and R_Z=
3.06 μm, and R for # 600_max= 3.68 μm and
And R_Z= 3.18 μm.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0036

[Correction method] Change

[Correction content]

Similarly, the maximum curve height R _max and the ten-point average roughness R _Z of the cross section are R _max = 1.62 μm and R, respectively.
# 120, 320 and 600 on _Z = 1.26μm metal surface
R _max and R _Z when processed with the above abrasive paper
In the case of # 120, R _max = 26.00 μm and R _Z = 20.24 μm, and in the case of # 320, R _max = 9.92 μm.
And R _Z = 6.86 μm, and in the case of # 600, R _max =
2.80 μm and R _Z = 2.36 μm.

Claims (10)

[Claims] 1. A pattern formed of a concavo-convex surface in which a large number of fine grooves extending in the same direction are arranged in parallel on a film formed on the surface of a metal material and which produces color due to the interference of light. A metal material in which a pattern appears and disappears with a change in hue, which appears in and out according to at least one of an incident angle of light and a viewing angle of an observer. 2. A metal material having a pattern of a concavo-convex surface in which a plurality of narrow grooves extending in the same direction are juxtaposed on the surface of the metal material, and a coating for forming a color by the interference of light is formed on the surface of the metal material. The metallic material in which the pattern appears and disappears with a change in hue, wherein the pattern appears and disappears according to at least one of an incident angle of light and a viewing angle of an observer. 3. The metal material according to claim 1 or 2, wherein a metal oxide is deposited in the fine pores of the coating and the bottom is enlarged, or the barrier layer is increased or adjusted. 4. The pattern is a single element formed by an uneven surface formed by fine grooves extending in one direction, a coupling element that connects a plurality of the single elements or a plurality of the single elements that are closely spaced from each other. The metal material according to claim 1 or 2, which is composed of arranged aggregate elements. 5. The metal material according to claim 4, wherein the entire pattern is a dispersed pattern in which a plurality of pattern elements are dispersed and arranged at appropriate positions. 6. The metal material according to claim 4, wherein the pattern is a solidarity pattern in which a plurality of pattern elements are arranged in series. 7. The metal material according to claim 1, wherein the surface of the metal material has concave portions and / or convex portions on a decorative surface having a pattern. 8. A transfer film is formed by forming a film on the surface of a metal material that causes coloration due to the interference of light, and then directly or indirectly transferring the contour shape of the elements constituting the pattern to the surface of the film. A method for manufacturing a metal material, wherein a pattern is formed on a concavo-convex surface in which a large number of fine grooves extending in the same direction are arranged in parallel at minute intervals, and the pattern appears and disappears with a change in hue. 9. The contour shape of the elements constituting the pattern is directly or indirectly transferred to the surface of the metal material, and the transferred pattern of each element is formed into an uneven surface in which a large number of fine grooves extending in the same direction are arranged in parallel at minute intervals. A method for producing a metal material, wherein after processing, a film that develops color due to an interference effect of light is formed on the surface thereof, and a pattern appears and disappears with a change in hue. 10. The method according to claim 8, wherein the axial direction of the grooves forming the pattern elements is changed for each element.