JP3357441B2 - Metal material in which a pattern appears and disappears with a change in hue and method for manufacturing the same - Google Patents

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 on which a pattern that appears and disappears with a change in hue and a method of manufacturing the same.

[0002]

2. Description of the Related Art Metal materials, especially aluminum materials or aluminum alloy materials, are used in kitchens,
It is used in all fields, such as architecture, vehicles, ships, etc., and is often used for decorative items, all of which are often seen by humans, so by coloring patterns or patterns on the surface In addition, it is possible to differentiate products.

[0003] Usually, this patterning is performed by mechanically performing unevenness processing on the surface of a metal material. In other words, sand blasting, in which sand or granular abrasive is sprayed on the surface of a metal material with compressed air or centrifugal force, etc.
In order to process irregularities in the direction and direction, it is necessary to use a hair-line f
inish) or belt with abrasives (belt sanding)
And a method using a brush (brushing) in which a brush made of a piano wire, a stainless steel wire, a brass wire, or the like is planted.

[0004] In particular, regarding the spin pattern, in addition to a method of attaching a diamond to a lathe to perform a fine cutting finish (diamond-cut finish), a diamond of various shapes is obtained by a numerically controlled running engine for high precision. There is known a method of cutting the cross-sectional shape of a groove in a saw shape with a cutter, or processing with a multi-axis milling machine in which a plurality of milling cutters are alternately mounted.

Further, Japanese Patent Application Laid-Open No. 50-67240 discloses that the surface of an aluminum plate or foil is mechanically surface-treated.
It is disclosed that after processing a directional uneven pattern, a crater-like pattern is formed by etching, and then an oxide film is formed by anodic film treatment. Japanese Patent Application Laid-Open No. 50-22663 discloses a watch external part which has a spin pattern produced by machining and, if necessary, is subjected to surface treatment such as painting, plating, vapor deposition, printing, anodizing, and dyeing. There is a description about. Furthermore, Japanese Patent Publication No. 59-40238 discloses that a matte portion is formed in a pattern on aluminum or aluminum alloy having a glossy surface by chemical, electrochemical or mechanical means, and then anodized film is formed. It is disclosed that after the treatment, electrolytic coloring or immersion coloring is performed to color the satin portion lighter than the glossy portion and to sharpen the pattern.

However, the pattern obtained by each of the above-mentioned methods merely has high brightness, emits a kind of precious stone-like luster, or is merely three-dimensional due to the difference in luster and color tone. A more value-added pattern is being sought.

On the other hand, there is also known a method of performing decoration by coloring by subjecting the surface of an aluminum or aluminum alloy material to electrolytic treatment. A typical example of the aluminum coloring is the formation of an anodized film called alumite, which has a color tone such as silver or gray. In addition to the spontaneous coloring method (primary electrolysis) as the coloring method, the electrolytic coloring method (secondary electrolysis) is mainly used, and there are bronze-based colors such as stainless steel, bronze, and brown. Therefore, conventionally, the selection has been limited to a very limited range of color tones. In recent years, however, the use of aluminum materials or aluminum alloy materials that newly produce color by the interference of light (hereinafter referred to as interference colors) has been limited. As the technology for the surface treatment method is established, application of this interference color to decoration of aluminum materials is being studied.

Here, in order to obtain an interference color, a multi-order electrolytic treatment is effective, which is classified according to the number of times of electrolysis in the electrochemical treatment. That is, as an example of the multi-electrolysis process, degreasing (removing oils and fats adhering to the surface) -etching (removing the aluminum oxide film on the surface and adjusting the surface roughness of the aluminum material) -desmutting (neutralizing) And smut removal)-primary electrolysis (forms an anodic oxide film)-secondary electrolysis (performs special treatment to cause light interference)-tertiary electrolysis (same as above) ----- n
Subsequent electrolysis (electrolytic coloring) -sealing (closes micropores in the surface layer of alumite to improve corrosion resistance) -painting (ensures corrosion resistance) -baking (curing of the paint).

Japanese Patent Publication No. 54-13860 discloses a primary color electrolytic coloring method utilizing interference color on an aluminum material on which an anodic oxide film is formed. By using a phosphoric acid or pyrophosphoric acid-based electrolytic bath in electrolysis, the bottom volume of the micropores in the anodic oxide film layer is expanded, and electrolytic coloring is performed in tertiary electrolysis, and the height of the electrolytic deposit is reduced. It is disclosed that an optical path difference is produced between the aluminum metal surface and the reflected light on the upper surface of the electrolytic deposit, which is made uniform, and an interference color corresponding to the optical path difference is produced.

Further, as a method for making the color tone uniform, Japanese Patent Publication No. 59-48960 discloses a method of enlarging the pores existing in the anodic oxide film and then forming a barrier type oxidation prior to the electrolytic treatment. A process for forming a coating is described. In addition, Japanese Patent Publication Nos. 54-23658 and 58-5203
You can refer to the publications of No. 8. With these technologies,
The reproducibility of a colored film having an arbitrary color tone such as purple, blue, green, and yellow and having excellent uniformity and color tone stability was enhanced. However, the aluminum material obtained by these methods can only provide a decorative property of a slightly mosaic color harmony as an aluminum material having an interference color, and in this case, a pattern with higher added value is sought. Have been.

[0011]

The aluminum material or aluminum alloy material used in all of the above fields has a base color of silver, gray, bronze, amber, brown or the like, and has a glossy or glossy surface. Matting or embossing as pre-treatment (embossi
ng), used as a metal material with a sandblast or hairline finish. Since the pattern applied to the surface is based on the above-mentioned known technology, the differentiation of products at present is limited. This fact is the reason why an unprecedented new pattern is expected.

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

[0013]

SUMMARY OF THE INVENTION The present invention has a pattern comprising a plurality of narrow grooves arranged in parallel in the same direction on a film which forms an interference color formed on the surface of a metal material. The pattern is formed by uneven surfaces with narrow grooves extending in one direction
Element that has been connected,
Elements or single elements in close proximity to each other
Elements, and a plurality of pattern elements
Dispersion patterns and a series of
Is one of solidarity patterns and total volume was, and metal material pattern with a change in hue, which comprises infested according to at least one of viewing angles of incidence and the viewer of the light is infested and, On the surface of the metal material, there is a pattern formed of an uneven surface in which a number of narrow grooves extending in the same direction are arranged in parallel, and a film that produces an interference color is formed on the surface of the metal material, and the pattern is formed in one direction. Formed with uneven surface by extending narrow groove
A single element, a connecting element connecting multiple of this single element or
Is a collection of multiple single elements that are closely spaced from each other.
Elements, and a plurality of pattern elements
Pattern and the series
And one of the band patterns and total volume, and pattern with a change in hue, which comprises infested according to at least one of viewing angles of incidence and the viewer of the light is a metal material to be infested.

Here, the above-mentioned film is formed by depositing a metal oxide in its fine pores by several-order anodic oxidation treatment and enlarging or adjusting the bottom of the metal oxide, or increasing or adjusting the barrier layer. An optical path difference is generated between the reflected light on the upper surface of the oxide layer and the reflected light from the aluminum metal surface, and an interference color corresponding to the optical path difference is generated, and is formed on the surface of the metal material. The surface of the metal material
Is to make the decorative surface with the pattern concave and / or convex
Is preferred.

[0015]

Further, in the production of the metal material of the present invention, after forming an anodic oxide film on the surface of the metal material, the contour shape of the element constituting the pattern is transferred directly or indirectly to the surface of the film. A method characterized in that a transfer pattern of each element is processed into an uneven surface in which a large number of narrow grooves extending in the same direction are arranged in parallel at minute intervals, and a contour shape of an element constituting a pattern is directly or directly formed on a surface of a metal material. A method characterized by indirectly transferring a pattern of each element and forming a large number of narrow grooves extending in the same direction on the uneven surface at a minute interval, and then forming an anodic oxide film on the surface. Fit. And
It is recommended in practice that the axial direction of the narrow groove forming the pattern element is changed for each element.

Here, the metal material is a metal, in particular, a plate material of aluminum or aluminum alloy, such as a flat plate, a curved plate, a corrugated plate, a bent plate, and a tube material or an extruded shape material.

[0018]

According to the metal material of the present invention, a pattern that appears and disappears according to at least one of an incident angle of light and a viewing angle of an observer is formed on a film that produces an interference color, or the surface of the metal material provided with the pattern is provided. And a film that produces interference colors. That is, it is characterized by a combination of a pattern that appears and disappears and a film that changes the hue of the pattern.

First, a film that produces an interference color can be obtained by a multi-order, specifically, a tertiary or higher electrolytic treatment.
The reason will be described below. In conventional electrolytic coloring by secondary electrolysis, an anodic oxide film (also called an alumite or an alumite layer) is formed by primary electrolysis. And a barrier layer made of dense aluminum oxide. This anodic oxide film is transparent to visible light, and when not normally 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, a certain kind of metal oxide is deposited and filled in the fine pores of the porous layer formed by the primary electrolysis. In this conventional secondary electrolytic coloring, light hitting the surface of the anodic oxide film is reflected or absorbed by the metal oxide layer, and the reflected light is weakened to lower the brightness. The hue changes from a stained color to a bronze to a 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 impinging on the surface of the anodic oxide film passes through the film layer which is transparent to visible light and the metal oxide deposited on the bottom of the porous layer. The light is reflected on the surface of the material layer. In addition, some kinds of light pass through the metal oxide layer and are reflected on the surface of the aluminum material. When the two types of light combine, 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 coating, the energy of the wavelength of light corresponding to blue out of the seven colors is emphasized, so that the color is apparently 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 reduced to about 100 nm, and the wavelength of visible light (red: 700 nm to blue: 400 n
It is preferable to adjust the order to substantially the same order as in m). Therefore, while the color tone (brightness) adjustment of the conventional secondary electrolytic coloring is on the order of microns, the tertiary electrolytic coloring has nano-
A technique for controlling the thin film within the range of the meter is required. In addition, in order to increase the reflection of light on the surface of the metal oxide, a technique of increasing the bottom volume of the porous layer (referred to as pore widening) and adjusting the barrier layer are also required. In order to satisfy these demands, it is effective to further expand to quaternary electrolysis, and multi-order electrochemical treatment is advantageous. The above processing method is referred to as an n-th order electrolysis method (n is the number of times of the electrolysis process).

Further, according to the present invention, an uneven surface 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 is formed on the surface of the metal material by mechanical surface treatment. And a pattern that appears and disappears according to a change in one 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 combined element, and an aggregate element. That is, a single element is composed of uneven surfaces in which scribe lines extending in one direction are juxtaposed, a coupling element is formed by connecting a plurality of the single elements, and a collective element is formed by spacing a plurality of the single elements from each other. Are collected. Each of these elements constitutes an independent pattern, and these elements are combined to form a full pattern described later.

The single element is a pattern in which the entire pattern is formed by a concave and convex surface formed by a unidirectional ruled line. For a pattern composed of the single element, a square pattern is used as an example in FIG. ~
This is specifically shown in (d). For the sake of convenience, a description will be given with reference to a pattern consisting of a score line extending in the vertical direction on the paper surface shown in FIG. 1 (a).
FIG. 3 (c) shows a pattern consisting of a ruled line extending at a 45 ° right inclination, and FIG. 4 (d) shows a pattern consisting of a ruled line extending at a 45 ° left inclination. These square patterns, the axial direction of the scribe line forming each pattern, when one or both of the incident angle of light and the viewing angle of the observer meet the predetermined conditions, the square pattern becomes a bright and dark pattern Appear and disappear.

Next, the connecting element includes a plurality of the single patterns,
The axial direction of the marking lines of each single pattern is combined in different directions. FIGS. 2 (a) to 2 (d) show examples of the connecting element in a square pattern as described above. Same figure
(a) is a square pattern formed by combining a rectangle formed by a left-sided engraved line extending in the vertical direction and a right-sided rectangle formed by a horizontal engraved line extending in the horizontal direction. When one or both of the incident angle of light and the viewing angle of the observer with respect to the axial direction of the marking line forming each pattern satisfies a predetermined condition, one of the right and left rectangles becomes bright and dark. Square pattern, or one of the left and right rectangular patterns appears and disappears.

FIG. 2B shows a right-angled isosceles triangle formed by a ruled line extending in the vertical direction and a right-angled isosceles triangle formed by a ruled line extending in the horizontal direction by connecting the hypotenuses to form a square. It is a pattern that did. This square pattern, when either one or both of the incident angle of light and the viewing angle of the observer with respect to the axial direction of the score line forming each pattern satisfies a predetermined condition, one of the triangles becomes light and dark. A square pattern, a right-angled isosceles triangle with the hypotenuse at the top, or a right-angled isosceles triangle with the hypotenuse at the bottom appears.

FIG. 3 (c) shows a square pattern formed by alternately connecting two triangles formed by engraved lines extending in the vertical direction and two triangles formed by engraved lines extending in the horizontal direction. FIG. 3D shows two triangles formed by vertically extending score lines and two triangles formed by horizontally extending score lines.
Composed of two triangles and a ruled line extending at an angle of 45 ° to the right
Consisting of two triangles and a ruled line extending at an angle of 45 ° to the left
It is a pattern in which two triangles are alternately combined to form a square. These square patterns also appear or disappear according to one or both of the incident angle of light and the viewing angle of the observer with respect to the axial direction of the score line forming each pattern, and the pattern itself changes in various ways.

The above description means that the appearance of the pattern is diversified depending on the incident angle of light and the viewing angle of the person with respect to the axial direction, even if the pattern is an independent pattern composed of one element. The pattern is visually influenced as a three-dimensional or dynamic change by being influenced by a change in directionality or position of the appearing / recessing pattern in addition to the brightness of the appearing / retreating pattern.

Finally, the collective pattern is a pattern in which the rectangles and triangles in the above-mentioned combined pattern are not combined with each other but are gathered at intervals, and a specific example thereof is shown in FIG. 3) to 3 (d) are shown in FIGS. 3 (a) to 3 (d). For example, in the square pattern shown in FIG. 3 (c), four right-angled isosceles triangles are gathered at equal vertices at equal vertices by providing an interval 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, by the appearance and emergence of one of the upper, lower, left and right patterns,
Four right-angled isosceles triangles become light and dark squares, or appear or disappear as a vertically symmetric or left-right symmetric pattern depending on whether they appear up or down or left or right, or other combinations of patterns Change into and appear. In other words, the appearance of the pattern is more diversified than the combined pattern.

The entire 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 at an appropriate position in an appropriate direction when various patterns selected from the single element, the combined element, and the aggregate element are combined. As shown in FIGS. 4 (a) to 4 (d), specific examples of the dispersing pattern, the appearance of the pattern described in detail in the independent pattern described above is further diversified. In effect, it will be a more complicated haunting than illustrated.

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

The metal material may be any of a plate material such as aluminum or an aluminum alloy, a tube material and an extruded shape material, and it is desired that the material satisfy the JIS specified for each application. For example, as interior and exterior building materials,
JIS A1050P-H14, A1100P-H18 and A6063S-
T5 and the like, and the thickness of the plate is not particularly limited.
~ 6 mm is used. The thickness of the film is preferably 10 μm or more in order to cause corrosion resistance and light interference. During transportation and storage, it is necessary to apply a curing sheet to prevent flaws. As other metal materials, stainless steel and the like can be cited, but a unique film formation and coloring treatment are required.

In applying a pattern to this metal material, particularly when it is desired to enhance the decorativeness of the metal material itself due to irregularities,
As a pretreatment, the surface of the metal material is formed according to the outer contour of the pattern or the like, and appropriate irregularities are provided. Then, the pattern is formed on the decorative surface using the large uneven portion as a decorative surface.
In other words, a sketch of a desired pattern shape is directly drawn on the surface of the metal material, and the entirety of the pattern and the appearance and emergence of the pattern are envisioned, and the axial direction of the directional marking line constituting each pattern element (hereinafter, simply referred to as (Referred to as the axial direction). If necessary, the sketch is indirectly transferred to the surface of the metal material using a stainless steel or similar template having a thickness of 0.05 to 0.1 mm cut out according to the pattern. At this time, since the design becomes smaller than a predetermined size depending on the thickness of the template, the size is set to be considerably larger in advance. Preferably, since it is difficult to correct the axial direction after the formation of the engraved line, the axial direction can always be adjusted by using each template cut out from a pattern in which the axial direction of the engraved line is unified without using one template. It is possible to evenly align.

The formation of the score line is suitable for the production on an industrial scale.
This is done with abrasive papers. As the abrasive paper, ♯40, 50, 60, 80, 100 according to JIS R6252-192
, 120, 150, 180, 220, 240, 280, 320, 400
, 500, and 600 are selected as abrasive papers of an appropriate particle size (number) (they may be combined with different particle sizes instead of using the same particle size), and the abrasive paper may be formed into a rectangle having 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 in the outward path, and this operation is repeated once or several times, and a number of narrow grooves visually extending in the same direction are formed. Marking is performed at an appropriate angle so as to form an uneven surface with uniform marking lines arranged in parallel at minute intervals. The abrasive paper preferably has a grain size of # 320 and a particle size of around # 320. Because, when the particle size becomes small, for example, ♯
With 600, a mirror surface or an uneven surface with low contrast is obtained, but it is not possible to expect the appearance of a clear pattern. On the other hand, when the grain size is coarse, for example, in the case of # 120, a highly bright and dark uneven surface can be formed, but the unevenness of uneven scribed lines is noticeable in close observation, and the finish evaluation is reduced. However, since the finish evaluation varies depending on the use, the use environment, and personal preference, an appropriate particle size may be selected according to the case.

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

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
_Z = 1.26μm on the surface of metal material, 120, 320 and 600
R _max and R _Z when processing with 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 for ♯600, R _max =
2.80 μm and R _Z = 2.36 μm.

The size of the abrasive paper is preferably formed to a width corresponding to the pattern width in the axial direction of the cut-out template. Truncate or change the position, etc., so that you can always engrave in new parts.

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 work, a variety of work or a hard (4H-9H) pencil-like tool is used. Is required. For example, erasers mixed with abrasives with a particle size of 50 to 100 mesh are commercially available for fine, medium, and coarse types. It is. FIG. 6 shows a specific example of this tool. In this tool, the engraving blade, pencil-like or scribe-like engraving blade having various shapes shown in FIG. 2B is attached to the holder shown in FIG. A scribing blade is attached to the core material shown in (1), which is fixed so that the abrasive paper with the folded part at the tip is replaceable.

In order to unify the processing of the score line in one direction in the forward direction of the longitudinal axis, it is difficult to adjust and maintain a constant score line unless the user is skilled in reciprocating reciprocating work. This is because it becomes a glossy surface instead of a ruled line. That is, in the forward path in the direction of the vertical axis, it is possible to check the density of the ruled line, adjust the pressing force against the metal material, and immediately see the finish.

Further, the guide ruler for assisting the engraving line operation is similar to a T ruler for drafting, preferably having an angle adjusting function for inclining the axial direction of the engraved line.
That is, a device similar to a commercially available drafting device, for example, the device shown in FIG. 7 is suitable. The illustrated device is a metal material 2 placed on a work table 1.
A ruler 3 to be moved above is attached to a rail 4 provided at an end of the worktable 1 so as to be movable in the axial direction and adjustable in angle with respect to the rail. In addition, a rotatable turntable is provided. 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 marking line becomes a problem, even if an abrasive having an appropriate particle size is selected, a desired uneven surface cannot be obtained unless the marking line is formed at a substantially appropriate pressing angle. It depends. Therefore, in order to avoid correction in the axial direction of the score line, it is preferable to confirm the pressing angle according to the grain size of the abrasive paper on the test metal material (discarded material).

Next, an apparatus for realizing production on an industrial scale is shown in FIGS. FIG. 8 shows a cutting line formed by the tool 5 shown in FIG. 8B on the metal material 2 which has been subjected to the pre-treatment by forming the area where the pattern shown in FIG. Here is an example. The tool is shown in FIG.
As shown in FIG. 5, a large number of flat scored blades 6 are fixed to a base plate 7 at predetermined intervals and arrangement so as to be movable in the axial direction. An adjustment weight 8 is attached to the upper part of each scored blade 6, and a load is applied downward in the axial direction. And
By horizontally moving either the tool 5 or the metal material 2, the scored blade 6 is constantly brought into contact with the pattern convex surface 2 a of the metal material 2 under the action of the adjusting weight 8 during the movement, The score lines are formed reliably.

FIG. 9 shows the metal material 2 which has been subjected to the pre-treatment to form the pattern applying surface shown in FIG. The case where a line is formed is shown. In this case, the metal material 2 is fixed so that the concave side 2b faces downward, and below the metal material 2,
The tool 5 is arranged in a direction in which the scored blade 6 is directed upward, and a copying plate 10 having a convex portion 9 corresponding to the pattern concave surface 2b is arranged below the tool 5, and the upper stage is linked with the horizontal movement of the copying plate 10. The metal member 2 of FIG. 2 is horizontally moved, and the head 11 of the ruled blade 6 follows the convex portion 9 of the copying plate 10, and the ruled blade 10 rises or descends. A score line is formed. When it is desired to emphasize a delicate pattern or a design, the contour line 13 can be added by the tool 5.

Further, the metal material having the pattern formed by the directional marking lines on the surface as described above is subjected to a normal surface treatment as necessary as a post-treatment. As the surface treatment, for example, a surface treatment suitable for an application requiring corrosion resistance or the like is selected.

FIG. 10 shows an example of a manufacturing process diagram including the post-treatment according to the present invention. That is, in the case of forming a pattern by a ruled line prior to the formation of a film, the surface of the metal material after the patterning is degreased, and after the desmut treatment, 1
An electrolytic treatment is performed for the first to nth orders, then a sealing treatment is performed, and a transparent resin is applied and baked to obtain a product. In the case of forming a pattern by engraving after forming the film, the patterning may be performed after the sealing process. Here, the electrolytic treatment means that first, in the primary electrolysis, an anodic oxide film is formed.
It is formed in an electrolytic bath in which an inorganic acid or an organic acid or a mixed acid thereof is formed. In the subsequent secondary to n-1st electrolysis, a special treatment for generating an interference color, specifically, in the n-1st electrolysis Pore widening of micropores formed by primary electrolysis. Normally, electrolytic 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 n-th electrolysis, an alternating current electrolysis treatment is performed in an inorganic coloring bath to which a metal salt has been added. In addition, the sealing treatment is to close micropores in the surface layer of the anodic oxide film and improve corrosion resistance. Further, the application of the transparent resin is performed by electrodeposition, dipping or electrostatic coating.

[0045]

【Example】

Example 1 In manufacturing a metal material having a polka dot pattern shown in FIG. 11 on a film that generates interference colors, each polka dot pattern in FIG. 11 was made into a single element, and each element was used to make the pattern appear and disappear. Vertical axis, horizontal axis, right 45 ° tilt axis and left 45 °
There were four types of inclined axes, and allocation was performed. One type of template was used. Abrasive paper was formed with a rectangular shape having an appropriate width of # 600 and a score line was formed with a tool. Below, each manufacturing process is shown.

<First Step> Aluminum plate (JIS A10
50 P-H14) on the surface by tertiary electrolysis to a film thickness of 10 μm.
The interference color of m formed a gray electrolytic colored film. 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 an oxide film of 10 μm. Then, in secondary electrolysis, 100g / l phosphoric acid and 50g / l
5 at 40V in an electrolytic bath of sulfuric acid with aluminum plate as anode
Anodic oxidation for a minute to make the bottom of the micropores wide. Further, the coloring treatment for tertiary electrolysis is 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 and 60 g / l.
AC electrolysis treatment was performed for seconds.

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

<Third Step> A stainless steel plate template, as shown in FIG. 11 (a), from which the entire pattern has been cut out, is placed on the electrolytically colored film after the sealing treatment, and both are attached 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 turning the aluminum plate at an appropriate angle. Thereafter, the template was removed.

In the metal material thus obtained, the appearance of the pattern accompanying the change in hue changed from FIG. 11 (b) to FIG. 11 (c). In other words, it becomes a polka dot pattern accompanied by a change in phase and hue, and is 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.
Thereafter, in manufacturing a metal material having a film that produces an interference color, each polka dot pattern in the figure is made into a single element, and in order to make the pattern appear and disappear, the axial direction of each element is the vertical axis, the horizontal axis, the right Allocation was performed with four types of 45 ° tilt axis and 45 ° left tilt axis. One type of template was used. Abrasive paper was formed by making a square of # 132 into a rectangle having an appropriate width and a tool and forming a score line. Below, each manufacturing process is shown.

<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 only on the outward path along the guide ruler with # 132 abrasive paper, and was scored at an appropriate pressing angle to form an uneven surface. The adjustment in the axial direction was performed by turning the aluminum plate at an appropriate angle. Thereafter, the template was removed. <Third step> The same tertiary electrolysis treatment as in Example 1 was performed.
A metal material having a polka dot pattern under the electrolytic colored oxide film having a gray interference color was obtained.

In the metal material thus obtained, the pattern accompanying the change in hue changed from FIG. 11 (b) to FIG. 11 (c), as in Example 1. Note that the metal material obtained in Example 1 is whitish as a whole and has a small difference in lightness and darkness, whereas the metal material obtained in Example 2 is slightly colored in the pattern and has a large difference in lightness and darkness. there were.

Example 3 A metal material having a pattern of two butterflies, two girls' faces, or one large butterfly with wide wings as shown in FIG. In doing so, in order to make the pattern appear and disappear, combine single elements, connecting elements and collective elements, and set the axis direction of each element to the vertical axis, horizontal axis, right 45 °, left 45
°, and allocation was made with the appearance of patterns in mind. Use one type of template, use ♯320 for abrasive paper, and form a ruled line with a rectangle of appropriate width,
The outline of each element was formed with a tool. Below, each manufacturing process is shown.

<First Step> Aluminum plate (JIS A10)
On the surface of 50P-H14), a film thickness of 10 μ
With m, an electrolytic colored film having a pink interference color 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 an oxide film of 10 μm. Next, in the secondary electrolysis, an electrolysis treatment was carried out in a 100 g / l phosphoric acid bath at an alternating current of 15 V for 5 minutes, and further, in the same bath, an anodic oxidation treatment with soft start control was performed using an aluminum plate as an anode to reach 100 V in 60 seconds. . The coloring treatment for quaternary electrolysis is 5 g / l stannous sulfate, 20 g / l nickel sulfate,
An AC electrolysis treatment was performed for 90 seconds at a current density of 0.3 A / dm ^{2 in} an aqueous solution consisting of 15 g / l sulfamic acid and 5 g / l tartaric acid.

<Second Step> Example 1 was performed using boiling water.
Sealing treatment was performed in the same manner as described above.

<Third Step> A single pattern of two butterflies was cut out on the electrolytic colored film after the sealing treatment.
The stainless steel plate template shown in (a) was placed at a predetermined position, and both were fixed with an adhesive tape. <Fourth Step> Each element was unified with only 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 turning the aluminum plate at an appropriate angle. Thereafter, the template was removed. <Fifth Step> The contour of the pattern was cut along a vertical axis with a tool.

In the metal material thus obtained, the pattern accompanied by the change in hue appeared and changed from FIG. 12 (b) to FIG. 12 (c). That is, two butterflies with phase and hue changes,
It can be three-dimensionally or dynamically changing and perceived as the profile of two opposing girls, or as a stunning butterfly with one wing wide open.

Example 4 On the surface of a metal material, a pattern of two butterflies, two girls' faces or a pattern of one butterfly with wide wings was formed as shown in FIG. In producing a metal material having a film that produces a film, a single element, a combination element and a collective element are combined in order to make the pattern appear and disappear, and the axial direction of each element is the vertical axis, the horizontal axis, right 45 °, left 45 °, and allocation was made with the appearance of patterns in mind. One type of template was used. Abrasive paper was made of # 132, a rectangular shape having an appropriate width was used to form engraved lines, and the outline of each element was formed with a tool. Below, each manufacturing process is shown.

<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 only on the outward path along the guide ruler with # 132 abrasive paper, and was scored at an appropriate pressing angle to form an uneven surface. The adjustment in the axial direction was performed by turning the aluminum plate at an appropriate angle. Thereafter, a contour was formed and the template was removed. <Third step> The same fourth electrolytic treatment as in Example 3 was performed.
Under the electrolytic colored film having a pink interference color, a metal material having two butterflies, two girls' face patterns, or one butterflies with wide spread wings was obtained.

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

[0062]

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

[Brief description of the drawings]

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

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

FIG. 3 is an explanatory diagram showing a set element of a pattern.

FIG. 4 is an explanatory diagram showing the entire contents of a dispersion pattern.

FIG. 5 is an explanatory diagram showing the entire solidarity pattern.

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

FIG. 7 is a schematic diagram illustrating an example of a guide ruler.

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

FIG. 9 is an explanatory diagram 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 the appearance of a full 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 which causes a change in appearance of a full pattern consisting of a template, a butterfly and a girl in Examples 3 and 4.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Work table 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 part 10 Copying plate 11 Head 12 Marking axis direction 14 Contour line

Claims (5)

(57) [Claims] 1. A pattern formed on a surface of a metal material, on which a color is generated by interference of light, which is formed by arranging a plurality of narrow grooves extending in the same direction, the pattern comprising: Single unit formed by uneven surface with narrow groove extending in one direction
Element, connected element or unit connecting multiple of this single element
A set element in which multiple elements are arranged close to each other
Element, and a plurality of pattern elements
Dispersion pattern and solidarity pattern
Or it was a total volume, and the metal material pattern with a change in hue, which comprises infested according to at least one of viewing angles of incidence and the viewer of the light is infested like. 2. A metal film having a pattern of irregularities in which a number of narrow grooves extending in the same direction are juxtaposed on a surface of a metal material, and a film that generates color by interference of light is formed on the surface of the metal material. The pattern is an uneven surface formed by narrow grooves extending in one direction.
A single element formed by connecting multiple of this single element
Multiple connected elements or single elements spaced close to each other
Consists of contiguous set elements, and more than one pattern element
Is a series of dispersed patterns and
A metal material having a full color of any one of the arranged solidarity patterns, and having 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. Color development by interference of light on the surface of a metal material
After forming a film that produces
Transfer the outline shape of the constituent elements directly or indirectly, and
Numerous narrow grooves extending in the same direction as the transfer pattern of the element
Hue characterized by being processed into uneven surfaces parallel to each other at intervals
A method of manufacturing a metal material in which patterns appear and disappear with changes. 4. A method for forming a pattern on a surface of a metal material.
Transfer the contour shape directly or indirectly, and transfer pattern of each element
With a number of narrow grooves arranged in the same direction
After processing into a convex surface, the surface is irradiated by light interference.
Hue change characterized by the formation of a color-producing film
A method for manufacturing a metal material in which a pattern appears and disappears. 5. An axial direction of a narrow groove forming an element of a pattern,
5. The method according to claim 3, wherein the method changes for each element.