JP2009062623A - Color marking method by laser - Google Patents
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- JP2009062623A JP2009062623A JP2008310797A JP2008310797A JP2009062623A JP 2009062623 A JP2009062623 A JP 2009062623A JP 2008310797 A JP2008310797 A JP 2008310797A JP 2008310797 A JP2008310797 A JP 2008310797A JP 2009062623 A JP2009062623 A JP 2009062623A
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 229910052751 metal Inorganic materials 0.000 claims abstract description 76
- 239000002184 metal Substances 0.000 claims abstract description 76
- 230000001678 irradiating effect Effects 0.000 claims abstract description 19
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 8
- 238000002845 discoloration Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- 239000012298 atmosphere Substances 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
- 229910021529 ammonia Inorganic materials 0.000 claims description 4
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 4
- 229930195733 hydrocarbon Natural products 0.000 claims description 4
- 150000002430 hydrocarbons Chemical class 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 8
- 239000010936 titanium Substances 0.000 description 8
- 229910052719 titanium Inorganic materials 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 4
- 239000003086 colorant Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000006061 abrasive grain Substances 0.000 description 3
- 238000002048 anodisation reaction Methods 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000002123 temporal effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 229910009372 YVO4 Inorganic materials 0.000 description 1
- WOIHABYNKOEWFG-UHFFFAOYSA-N [Sr].[Ba] Chemical compound [Sr].[Ba] WOIHABYNKOEWFG-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 235000019646 color tone Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- -1 methane Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/262—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used recording or marking of inorganic surfaces or materials, e.g. glass, metal, or ceramics
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- Laser Beam Processing (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Abstract
Description
本発明は、金属の表面にレーザを用いて色彩模様を形成させ、あるいは芸術的な紋様を製作する方法に関するものである。 The present invention relates to a method of forming a color pattern on a metal surface using a laser or producing an artistic pattern.
金属表面、又は透明又は半透明のガラス、又はプラスチック、又はセラミックス等へ文字、模様などの加工で色を付ける加工方法は、従来から例えば刻印を施されたものにインク等の液体を入れ込む、塗装、印刷、エッチング、ブラスト、などの方法がある。
しかし、これらの方法は、手作業によるものが殆どで、その量産性や品質の均一性などの点で難がある。
A processing method for coloring a metal surface, transparent or translucent glass, plastic, ceramics, or the like by processing characters, patterns, etc. is conventionally performed by, for example, putting a liquid such as ink into a stamped one, There are methods such as painting, printing, etching and blasting.
However, most of these methods are performed manually, and are difficult in terms of mass productivity and quality uniformity.
また、金属表面等に火炎、レーザ等の熱源を加えれば該金属表面が変色することは公知である。
例えば、特許文献1に記載されているように、金属表面にレーザを照射し更に該照射表面を反応性ガス中で熱処理する方法がある。しかし、この方法では、金属表面にレーザを照射した効果が反応性ガス中での熱処理で一部分減じることがある。
また、特許文献2に記載されているように、窒素を含む空気中でレーザを純チタンの金属表面上に照射して発色・模様形成させる方法がある。しかし、この方法は、単に純チタンの金属表面上にレーザを照射するだけなので微妙な色彩が表現できないという欠点がある。
また、基盤表面上にチタンを蒸着し同チタン被膜を酸化処理してその一部を酸化チタン被膜にした上、レーザ照射して該表面を模様化する方法がある。
Further, it is known that when a heat source such as a flame or a laser is applied to the metal surface or the like, the metal surface is discolored.
For example, as described in
In addition, as described in
In addition, there is a method in which titanium is deposited on the surface of the substrate, the titanium coating is oxidized, a part thereof is converted into a titanium oxide coating, and the surface is patterned by laser irradiation.
また、素地の上に下地層と上部層の二層を施し、その上部層のみをレーザによって昇華させ下地層を表面に出すことによりレーザを照射した部分のみ別な色(下地層の色)を表現する方法がある。
しかし、この方法では、手間、コストがかかる欠点がある。
In addition, two layers of the base layer and the upper layer are applied on the substrate, and only the upper layer is sublimated with a laser and the base layer is exposed on the surface, so that only the portion irradiated with the laser has a different color (color of the base layer). There is a way to express.
However, this method has a drawback that it takes time and cost.
更に、ガラス等の内部にレーザ光を収斂させて焦点で気泡を発生させて紋様を発生させる方法があるが、色彩を出すことが難しいし、ガラス内にバリウム・ストロンチューム、銅等の発色元素を入れてガラス内部に発色させる方法があるがコスト高になるという問題がある。また、ガラス等の裏面に効果的に色彩を出す方法が無いという問題がある。また、加工処理したものを内部から発光させる方法がないという問題もある。 In addition, there is a method of converging laser light inside glass to generate bubbles at the focal point to generate a pattern, but it is difficult to produce colors, and coloring elements such as barium strontium and copper are contained in the glass There is a method of adding color to color the inside of the glass, but there is a problem that the cost becomes high. In addition, there is a problem that there is no method for effectively producing colors on the back surface of glass or the like. There is also a problem that there is no method of emitting light from the inside of the processed material.
一方、金属の発色については、陽極酸化による酸化膜の形成がすでに知られているが、このような原理を用いて或る文字、模様等を表現するには、表現部以外の部分を樹脂膜等でマスキングを施した上で、これを電解質溶液中に漬けて電流を流す必要があり、特に実用性の点で問題がある。
本発明は、このような従来の問題を解決しようとするもので、色彩模様を安価に細やかに表現できるレーザによるカラーマーキング方法を提供することを目的とする。 The present invention is intended to solve such a conventional problem, and an object of the present invention is to provide a laser color marking method capable of expressing a color pattern in detail at low cost.
本発明は、レーザ光、熱処理炉、ガス成分、レーザ処理方法を組み合わせることにより、効果的に安価に良い色彩紋様が得られるようにしたものである。 According to the present invention, a good color pattern can be obtained effectively and inexpensively by combining a laser beam, a heat treatment furnace, a gas component, and a laser processing method.
従来技術の課題を解決するため、この発明ではレーザ加工機から全表面或いはその一部を変色させた金属表面にレーザ光を照射し、照射した部分に酸化皮膜を形成し、この酸化皮膜と素地金属との屈折率の差に起因した光の干渉作用を利用して所望の色を発色させるレーザによるカラーマーキング方法において、レーザ加工機から与えるレーザ光の発振出力、照射時間、繰返し回数、ビームスポットサイズ、焦点距離、パルス周波数等を所定の値に選ぶことにより、所定の色を発色させることを特徴としている。レーザ光の波長は、炭酸ガスレーザ・YAGレーザ・エキシマレーザ・YVO4レーザ又はこれらのレーザを変調させたものを用いる。更に、連続又はパルスレーザを照射する時間的・空間的間隔、照射強度またはその両方を変化させることにより一度に何色も所望の色を発色させることを特徴としている。このようなカラーマーキングは、色別文字・図柄、模様、芸術的表現を行うことが出来る。 In order to solve the problems of the prior art, in the present invention, a laser beam is irradiated from a laser processing machine onto a metal surface whose entire surface or part thereof has been discolored, and an oxide film is formed on the irradiated part. In laser color marking method that produces desired color using light interference caused by difference in refractive index with metal, laser beam oscillation output, irradiation time, number of repetitions, beam spot from laser processing machine It is characterized in that a predetermined color is developed by selecting the size, focal length, pulse frequency, etc. to predetermined values. As the wavelength of the laser beam, a carbon dioxide laser, a YAG laser, an excimer laser, a YVO4 laser, or a modulation of these lasers is used. Further, the present invention is characterized in that a desired number of colors can be developed at a time by changing the temporal and spatial intervals of irradiation with continuous or pulsed laser, irradiation intensity, or both. Such color marking can be used for color-specific characters / designs, patterns, and artistic expressions.
また、水素、アンモニア、一酸化炭素、メタン等の炭化水素又はこれらの組合せのガスの雰囲気で、全表面或いはその一部を変色させた金属表面に、レーザ光を照射することにより変色させた金属表面の色を還元させることを特徴としている。 In addition, a metal that has been discolored by irradiating a laser beam on a metal surface that has been discolored on the entire surface or part of it in an atmosphere of a hydrocarbon such as hydrogen, ammonia, carbon monoxide, methane, or a combination thereof It is characterized by reducing the color of the surface.
すなわち、本発明は、金属表面にレーザを照射し、該金属表面の全域或いはその一部を変色させ、該変色部分内に更にレーザを照射して変色させるために、レーザを金属表面上に2回以上の複数回照射することを特徴とする金属のカラーマーキング方法である。 That is, the present invention irradiates a laser on a metal surface in order to irradiate the metal surface with a laser, discolor all or part of the metal surface, and further irradiate the laser into the discolored portion to change the color. It is a metal color marking method characterized by irradiating a plurality of times more than once.
また、金属を室温よりも高温に保持した熱処理炉中に挿入して保持し、該金属表面を変色させた後に、
該金属表面にレーザを照射し、該金属表面の全域或いはその一部を変色させ、該変色部分内に更にレーザを照射して変色させるために、レーザを金属表面上に2回以上の複数回照射することを特徴とする金属のカラーマーキング方法である。
Further, after inserting and holding the metal in a heat treatment furnace maintained at a temperature higher than room temperature, and discoloring the metal surface,
In order to irradiate the metal surface with a laser, discolor all or part of the metal surface, and further irradiate the laser into the discolored portion to cause discoloration, the laser is irradiated on the metal surface two or more times. It is a metal color marking method characterized by irradiating.
また、金属を室温よりも高温に保持した熱処理炉中に挿入して保持し、該金属表面を変色させた後に、
水素、アンモニア、一酸化炭素、メタン等の炭化水素、又はこれらの組合せのガスの雰囲気でレーザ照射し、前記変色を還元させて変色程度を減少させ、当該変色程度を減少させた部分に更にレーザを照射して変色させるために、レーザを金属表面上に2回以上の複数回照射することを特徴とする金属のカラーマーキング方法である。
Further, after inserting and holding the metal in a heat treatment furnace maintained at a temperature higher than room temperature, and discoloring the metal surface,
Laser irradiation is performed in an atmosphere of hydrogen, ammonia, hydrocarbons such as carbon monoxide, methane, or combinations thereof, and the discoloration is reduced to reduce the degree of discoloration, and a laser is further applied to the portion where the degree of discoloration is reduced. In order to change the color by irradiating, the metal color marking method is characterized by irradiating the metal surface with the laser twice or more times.
また、これら金属のカラーマーキング方法において、前記レーザを複数回照射する際に当該レーザ照射の繰返し回数により所望の色を発色させるものである。 In these metal color marking methods, when the laser is irradiated a plurality of times, a desired color is developed by the number of repetitions of the laser irradiation.
また、これら金属のカラーマーキング方法において、前記レーザを複数回照射する際に、当該レーザの発振出力、照射時間、繰返し回数、ビームスポットサイズ、焦点距離、当該レーザがパルスレーザの場合のパルス周波数、波長、複数回のレーザ照射の時間的・空間的間隔の各値を選ぶことにより所望の色を発色させることを特徴とする。 In these metal color marking methods, when the laser is irradiated a plurality of times, the laser oscillation output, irradiation time, number of repetitions, beam spot size, focal length, pulse frequency when the laser is a pulse laser, It is characterized in that a desired color is developed by selecting each value of the wavelength and the temporal and spatial intervals of multiple times of laser irradiation.
また、これら金属のカラーマーキング方法において、複数回のレーザを照射する際に、前のレーザ照射の出力に対して、以降のレーザ照射の出力を同出力または低出力とするものである。
但し、レーザの1回の照射は、パルスレーザの連続的照射時においてパルスが繰返し照射された際の各パルス毎の照射のことではなく、連続レーザ、パルスレーザにかかわらず照射開始から停止までの連続的な1回の照射を示すものである。
Further, in these metal color marking methods, when laser irradiation is performed a plurality of times, the subsequent laser irradiation output is set to the same output or low output with respect to the previous laser irradiation output.
However, a single laser irradiation is not an irradiation for each pulse when the pulse is repeatedly irradiated in the continuous irradiation of the pulse laser, but from the irradiation start to the stop regardless of the continuous laser or the pulse laser. It shows one continuous irradiation.
本発明によれば、レーザを複数回照射することにより、自動で効率的に複雑な紋様を低コストで金属表面上に描くことが出来る。これにより、カラーマーキングによる多様で且つ精細な色彩により製品の付加価値を高めることが出来る。 According to the present invention, a complex pattern can be automatically and efficiently drawn on a metal surface at low cost by irradiating a laser a plurality of times. Thereby, the added value of the product can be enhanced by various and fine colors by color marking.
本発明の一実施の形態としては、図1に示すように、鉄、鋼、ステンレス鋼、ニッケル、クローム、チタニウム、アルミニウム、銅及びそれらの合金などの金属6の表面にレーザ5dを照射し、該表面の全域或いはその一部を変色させた後、該変色部分内に更にレーザ5dを照射して所定の色に変色させることを特徴とする金属のカラーマーキング方法である。本方法では、レーザ光を金属表面上に2回以上の複数回照射することにより、彩度が高く色階調の多い複雑な紋様を金属表面に描くことが可能になる。金属の形態としては、板、箔、ブロック、等が利用可能である。また、金属の表面形態としては、通常のグラインダー、サンドブラスト、グリッドブラスト仕上げ、砥粒又は電解研磨、陽極酸化による鏡面仕上げにおいて施工可能である。本発明の方法において、レーザ照射を高出力で行ったのち、2回目以降のレーザ照射を高出力・同出力又は低出力で行うことにより、より彩度の高い紋様を得ることが出来る。また、該2回目以降のレーザ照射の焦点距離を少し変えることにより、見る方向により色が変わる虹色の彩色が可能になる。
As one embodiment of the present invention, as shown in FIG. 1, the surface of a
また、本発明の他の実施の形態としては、鉄、鋼、ステンレス鋼、ニッケル、クローム、チタニウム、アルミニウム、銅及びそれらの合金などの金属を室温よりも200℃以上、望むらくは300℃から900℃の高温に保持した熱処理炉中に挿入して保持し、該金属表面をモノクロおよびカラーで変色させた後、更に複数回レーザ照射し所定のモノクロおよびカラーに変色させることを特徴とする、金属表面上へのカラーマーキング方法である。本方法を用いることによりレーザによる金属表面上へのカラーマーキングのバックグランドへの均一な色づけを可能にすることが出来る。金属の表面形態としては、通常のグラインダー、サンドブラスト、グリッドブラスト仕上げ、砥粒、陽極酸化、又は電解研磨による鏡面仕上げにおいて施工可能である。 Further, as other embodiments of the present invention, metals such as iron, steel, stainless steel, nickel, chromium, titanium, aluminum, copper and alloys thereof should be 200 ° C. or higher than room temperature, preferably 300 ° C. It is inserted and held in a heat treatment furnace maintained at a high temperature of 900 ° C., and after the metal surface is discolored in monochrome and color, it is further irradiated with laser multiple times to discolor to a predetermined monochrome and color. This is a color marking method on a metal surface. By using this method, it is possible to uniformly color the background of the color marking on the metal surface by a laser. As the surface form of the metal, it can be applied in a normal grinder, sand blast, grid blast finish, abrasive grains, anodization, or mirror finish by electropolishing.
また、本発明のさらに他の実施の形態としては、鉄、鋼、ステンレス鋼、ニッケル、クローム、チタニウム、アルミニウム、銅及びそれらの合金などの金属を室温よりも高い温度200℃以上、望むらくは200℃から900℃の炉中に挿入・保持し、該金属を一様にモノクロおよびカラーで変色させた後、水素、アンモニア、一酸化炭素、メタン等の炭化水素、又はこれらの組合せのガスの雰囲気でレーザ照射し、該変色を還元させて変色程度を減少させる。金属の形態としては、板、箔、ブロック等が利用可能である。この実施の形態の特徴の一つは、熱処理炉の利用とレーザによる色の還元作用を利用することである。金属の表面形態としては、通常のグラインダー、サンドブラスト、グリッドブラスト仕上げ、砥粒、陽極酸化、又は電解研磨による鏡面仕上げにおいて施工可能である。 Further, as still another embodiment of the present invention, a metal such as iron, steel, stainless steel, nickel, chromium, titanium, aluminum, copper, and an alloy thereof is desired to have a temperature higher than room temperature of 200 ° C. or higher. After being inserted and held in a furnace at 200 ° C. to 900 ° C. and uniformly discoloring the metal in monochrome and color, a gas such as hydrogen, ammonia, carbon monoxide, hydrocarbons such as methane, or a combination thereof Laser irradiation is performed in an atmosphere to reduce the color change and reduce the degree of color change. As the metal form, a plate, foil, block or the like can be used. One of the features of this embodiment is the use of a heat treatment furnace and the use of laser color reduction. As the surface form of the metal, it can be applied in a normal grinder, sand blast, grid blast finish, abrasive grains, anodization, or mirror finish by electropolishing.
そして、この実施の形態においては、更に、該変色部分内に更に焦点距離を変えてレーザを照射して所定の色に変色させることを特徴とする金属のカラーマーキング方法である。炉中で該金属表面をモノクロおよびカラーで変色させた後、更に焦点距離を変えて一回又は複数回レーザ照射し所定のモノクロおよびカラーに変色させることを特徴とする、金属表面上へのカラーマーキング方法である。この方法を用いることにより、色階調の多い複雑な紋様を金属表面に描くことを可能にし、レーザによる金属表面上へのカラーマーキングのバックグランドへの均一な色づけを可能にすることが出来る。 In this embodiment, the color marking method for metal further comprises changing the focal distance into the discolored portion and irradiating a laser to change the color to a predetermined color. A color on a metal surface, characterized in that after the metal surface is changed in monochrome and color in a furnace, the focal length is changed and laser irradiation is performed once or a plurality of times to change to a predetermined monochrome and color. It is a marking method. By using this method, it is possible to draw a complex pattern with many color gradations on the metal surface, and it is possible to uniformly color the background of the color marking on the metal surface by a laser.
なお、上述の各実施の形態においては、鉄、鋼、ステンレス鋼、ニッケル、クローム、チタニウム、アルミニウム、銅及びそれらの合金などの金属6の表面にパルスレーザ5dを照射する時間的・空間的間隔、その照射強度またはそれらの組み合わせ変化させることにより、該金属表面に連続的な色相の変化をもたらすことが可能である。
In each of the embodiments described above, the temporal and spatial intervals at which the pulse laser 5d is irradiated on the surface of the
本発明の一例として、例えば、炉中に研磨#400のSUS304ステンレス鋼を800℃で2分から5分間熱処理すると表面は青色になり、更に特定の部分にレーザを照射することにより照射した部分だけ炉中処理部分と異なる色を発色させることが出来る。 As an example of the present invention, for example, when # 400 polished SUS304 stainless steel is heat-treated at 800 ° C. for 2 to 5 minutes in a furnace, the surface turns blue, and only a portion irradiated by irradiating a specific portion with a laser A color different from that of the middle processing part can be developed.
また、炉中で一様に濃く変色させた後、大気中、水素雰囲気中、窒素雰囲気中でのレーザ照射で色を抜くことができる。 Further, after the color is uniformly darkened in the furnace, the color can be removed by laser irradiation in the air, in a hydrogen atmosphere, or in a nitrogen atmosphere.
また、表面機械研磨した場合、表面グラインダー研磨した場合、表面電解研磨した場合、サンドブラスト、ショットブラストした場合では、色彩の光沢等で異なる色調が得られる。 Further, when surface mechanical polishing, surface grinder polishing, surface electrolytic polishing, sand blasting, or shot blasting, different color tones are obtained depending on color gloss.
1 入力編集装置(パソコン)
2 レーザのコントローラ
3 光ファイバー
4 ケーブル
5 レーザ発振器
5a レーザ媒質
5b Qスイッチ
5c ミラー
5d レーザ光
5e ガルバノスキャナ
5f fθレンズ
6 ワーク
8 作業テーブル
1 Input editing device (PC)
2
Claims (6)
但し、レーザの1回の照射は、パルスレーザの連続的照射時においてパルスが繰返し照射された際の各パルス毎の照射のことではなく、連続レーザ、パルスレーザにかかわらず照射開始から停止までの連続的な1回の照射を示すものである。 In order to irradiate a metal surface with a laser, change the color of the whole or part of the metal surface, and further irradiate the laser within the discolored portion to change the color, the laser is irradiated on the metal surface two or more times. A metal color marking method characterized by comprising:
However, a single laser irradiation is not an irradiation for each pulse when the pulse is repeatedly irradiated in the continuous irradiation of the pulse laser, but from the irradiation start to the stop regardless of the continuous laser or the pulse laser. It shows one continuous irradiation.
該金属表面にレーザを照射し、該金属表面の全域或いはその一部を変色させ、該変色部分内に更にレーザを照射して変色させるために、レーザを金属表面上に2回以上の複数回照射することを特徴とする金属のカラーマーキング方法。
但し、レーザの1回の照射は、パルスレーザの連続的照射時においてパルスが繰返し照射された際の各パルス毎の照射のことではなく、連続レーザ、パルスレーザにかかわらず照射開始から停止までの連続的な1回の照射を示すものである。 After inserting and holding the metal in a heat treatment furnace maintained at a temperature higher than room temperature, and discoloring the metal surface,
In order to irradiate the metal surface with a laser, discolor all or part of the metal surface, and further irradiate the laser into the discolored portion to cause discoloration, the laser is irradiated on the metal surface two or more times. A method for color marking of metal, characterized by irradiating.
However, a single laser irradiation is not an irradiation for each pulse when the pulse is repeatedly irradiated in the continuous irradiation of the pulse laser, but from the irradiation start to the stop regardless of the continuous laser or the pulse laser. It shows one continuous irradiation.
水素、アンモニア、一酸化炭素、メタン等の炭化水素、又はこれらの組合せのガスの雰囲気でレーザ照射し、前記変色を還元させて変色程度を減少させ、当該変色程度を減少させた部分に更にレーザを照射して変色させるために、レーザを金属表面上に2回以上の複数回照射することを特徴とする金属のカラーマーキング方法。
但し、レーザの1回の照射は、パルスレーザの連続的照射時においてパルスが繰返し照射された際の各パルス毎の照射のことではなく、連続レーザ、パルスレーザにかかわらず照射開始から停止までの連続的な1回の照射を示すものである。 After inserting and holding the metal in a heat treatment furnace maintained at a temperature higher than room temperature, and discoloring the metal surface,
Laser irradiation is performed in an atmosphere of hydrogen, ammonia, hydrocarbons such as carbon monoxide, methane, or a combination thereof, the discoloration is reduced to reduce the degree of discoloration, and a laser is further applied to the portion where the discoloration degree is reduced. In order to change the color by irradiating, a metal color marking method characterized by irradiating a laser on a metal surface two or more times.
However, a single laser irradiation is not an irradiation for each pulse when the pulse is repeatedly irradiated in the continuous irradiation of the pulse laser, but from the irradiation start to the stop regardless of the continuous laser or the pulse laser. It shows one continuous irradiation.
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JP2013158379A (en) * | 2012-02-02 | 2013-08-19 | Fuji Kogyo:Kk | Game token and method of manufacturing the same |
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