JPH01241389A - Laser beam machining method - Google Patents
Laser beam machining methodInfo
- Publication number
- JPH01241389A JPH01241389A JP63068153A JP6815388A JPH01241389A JP H01241389 A JPH01241389 A JP H01241389A JP 63068153 A JP63068153 A JP 63068153A JP 6815388 A JP6815388 A JP 6815388A JP H01241389 A JPH01241389 A JP H01241389A
- Authority
- JP
- Japan
- Prior art keywords
- ceramics
- laser beam
- laser
- machining
- coloring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title abstract description 7
- 238000003754 machining Methods 0.000 title abstract 5
- 239000000919 ceramic Substances 0.000 claims abstract description 30
- 238000005520 cutting process Methods 0.000 claims abstract description 11
- 238000012986 modification Methods 0.000 claims abstract description 7
- 230000004048 modification Effects 0.000 claims abstract description 7
- 238000003466 welding Methods 0.000 claims abstract description 6
- 238000012545 processing Methods 0.000 claims description 15
- 238000003672 processing method Methods 0.000 claims description 8
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 19
- 238000004040 coloring Methods 0.000 abstract description 9
- 239000002344 surface layer Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229910052596 spinel Inorganic materials 0.000 description 3
- 239000011029 spinel Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は、セラミックスの切断、溶接、および表面改質
などに適するレーザ加工方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a laser processing method suitable for cutting, welding, surface modification, etc. of ceramics.
（従来の技術）
レーザの高出力化に伴ない、レーザを応用した材料加工
の実用化が進んでいる。加工は、切断。(Prior Art) As laser output increases, material processing using lasers is being put into practical use. Processing is cutting.
溶接１表面改質などが主であり、材料は金属やプラスチ
ックスが中心である。レーザ加工法の多くは、基本的に
レーザビームによる加工溶融加工であり、セラミックス
に比較して一般的に低融点である金属やプラスチックス
の多くでレーザ加工が実用化されている。さらに、より
高出力のレーザ装置の開発が年々進み、高融点のセラミ
ックスのレーザ加工が可能となって米た。しかしながら
、セラミックスの中でも実用材料の多い酸化物、例えば
アルミナ、ジルコニア、ムライト、スピネルなどは色が
白色系であり、レーザ照射した場合、そのエネルギーの
多くを反射してしまい、セラミックスを加熱溶融して加
工することが難しい。そこで、従来はカーボンスプレー
などで着色していたが、カーボン等の着色材がセラミッ
クスと反応するなどの悪影響があった。Welding 1 Mainly involves surface modification, etc., and the materials used are mainly metals and plastics. Most laser processing methods basically involve processing and melting using a laser beam, and laser processing has been put into practical use for many metals and plastics, which generally have a lower melting point than ceramics. Furthermore, the development of higher-power laser equipment has progressed year by year, and it has become possible to process ceramics with high melting points using lasers. However, oxides that are often used as practical materials among ceramics, such as alumina, zirconia, mullite, and spinel, are white in color, and when irradiated with a laser, much of the energy is reflected and the ceramics are heated and melted. Difficult to process. Conventionally, coloring was done using carbon spray, but this had negative effects such as the coloring material such as carbon reacting with the ceramics.
（発明が解決しようとする課題）
本発明は、従来の着色のように反応する他材料を塗布す
ることなく、レーザ光の反射を低減させ、レーザビーム
の高エネルギーを効率良く吸収させ非接触加工の特徴を
生かしたセラミックス等のレーザ加工方法であり、白色
系のセラミックスにおいても予備処理１こよってレーザ
光の反射を低減させ、レーザビームのエネルギーを効率
良くセラミックスが吸収して溶融することで切断、溶接
および表面処理することのできるセラミックス等のレー
ザ加工方法を提供することを目的とする。(Problems to be Solved by the Invention) The present invention reduces the reflection of laser light and efficiently absorbs the high energy of the laser beam without applying other materials that react as in conventional coloring. This is a laser processing method for ceramics, etc. that takes advantage of the characteristics of white ceramics. Preparation 1 reduces the reflection of the laser beam even in white ceramics, and the ceramic efficiently absorbs the energy of the laser beam and melts it, making it possible to cut it. The present invention aims to provide a laser processing method for ceramics, etc., which can be welded and surface treated.
（課題を解決するための手段と作用）
本発明は、セラミックスの切断、溶接および表面処理な
どをレーザ照射する際、セラミックスを予め着色してレ
ーザビームのエネルギーを効率良く吸収させることを特
徴とするセラミックス等のレーザ加工方法である。(Means and effects for solving the problems) The present invention is characterized in that when irradiating ceramics with a laser for cutting, welding, surface treatment, etc., the ceramics are colored in advance to efficiently absorb the energy of the laser beam. This is a laser processing method for ceramics, etc.
まず、本発明の対象となるセラミックスであるが、元来
レーザビームを比較的良く吸収するチタニア、窒化ケイ
素など有色のセラミックスより、元来レーザビームの多
くを反射してしまう、アルミナ、ジルコニア、ムライト
、スピネルなど、白色系のセラミックスｌこおいて本発
明の効果はより顕著となる。すなわち、対象物の色の点
からは、本発明が必ずしもセラミックスだけでなく他の
プラスチックなどの材料にも適用し得るものである。First, regarding the ceramics that are the subject of the present invention, alumina, zirconia, and mullite, which naturally reflect more of the laser beam than colored ceramics such as titania and silicon nitride, which absorb the laser beam relatively well. The effect of the present invention is even more pronounced in white ceramics such as spinel and spinel. That is, from the viewpoint of the color of the object, the present invention is applicable not only to ceramics but also to other materials such as plastics.
次１こ着色する色であるが、レーザ加工に適用するレー
ザ加工機はＣＯｆレーザが高出力装置が商品化されてい
ることから汎用されている。このＣＯ。The next step is coloring, and the laser processing machine used for laser processing is the COf laser, which is widely used because high-output devices have been commercialized. This CO.
レーザは波長が１０．６μｍであり、その波長光を比較
的良く吸収する色に着色することが有効と考えられる。The laser has a wavelength of 10.6 μm, and it is considered effective to color the laser with a color that absorbs light at that wavelength relatively well.
しかしながら、近年は他のレーザ装置、例えばＹＡＧレ
ーザなども材料加工に適用し得る装置が開発されている
ことから、その波長、すなわち１．０５μｍの吸収が良
い色であることも望ましい。いずれにせよ用いるレーザ
装置に合った波長の光を吸収する色に着色することが、
本発明の効果をより顕著にする。したがって、可視的に
黒色にすることは、より長波長であるレーザ光の波長を
も一般的には比較的良く吸収する可能性が高い。However, in recent years, other laser devices such as YAG lasers have been developed that can be applied to material processing, so it is also desirable that the color has good absorption at that wavelength, that is, 1.05 μm. In any case, it is best to color it in a color that absorbs light of a wavelength that matches the laser device used.
This makes the effects of the present invention more pronounced. Therefore, making the material visibly black generally has a high possibility of absorbing the longer wavelength of laser light relatively well.
セラミックスの着色法であるが、本発明では材料表面に
着色層をもうけるのではなく、材料そのものあるいは材
料表層を変色させることを特徴とする。材料表面に着色
層をもうける場合は、材料表面１こ不純物層をもうける
事をも意味し、高伸度を要求する加工では、レーザ加工
特有の非接触加工を生かせなくなる。また、切断加工な
どでは材料表面だけでなく、材料全体を着色することは
より有効と言える。 ・
以上の観点から、主ｌこ酸化物で材料の比奴的内部まで
着色する場合は、セラミックスを還元雰囲気で熱処理す
る方法で着色することが効果的と言える。また、レーザ
による表面改質など、材料の比較的表層をレーザ照射で
溶融固化する加工ではセラミックスに高エネルギービー
ムを照射して予め着色することがより効果的と言える。Although this is a method for coloring ceramics, the present invention is characterized by discoloring the material itself or the surface layer of the material, rather than forming a colored layer on the surface of the material. When forming a colored layer on the material surface, it also means forming an impurity layer on the material surface, and in processing that requires high elongation, the non-contact processing unique to laser processing cannot be utilized. In addition, it can be said that it is more effective to color not only the surface of the material but also the entire material in cutting processes. - From the above points of view, it can be said that it is effective to color the ceramic by heat treating it in a reducing atmosphere when coloring the inside of the material with the main oxide. Furthermore, in processes such as surface modification using a laser, in which a relatively superficial layer of a material is melted and solidified by laser irradiation, it is more effective to color the ceramic in advance by irradiating it with a high-energy beam.
（実施例）
アルミナの焼結体１００Ｘ１００ＸＩ（ｏｆ）を、１４
００℃の水素炉中で２時間加熱処理して、全体を黒暗色
に着色した。着色したアルミナ焼結体を１ｋＷＣＯ，レ
ーザで１ｎ厚さ方向に照射溶融切断した。切断時間は約
１０秒であった。比較して、着色していないアルミナ焼
結体（同寸法）を１ｋｗＣＯ！レーザで同様（こ、切断
した。切断時間は約２０秒であった。(Example) Alumina sintered body 100X100XI (of) was
It was heat-treated in a hydrogen furnace at 00°C for 2 hours, and the whole was colored dark black. The colored alumina sintered body was irradiated and melted and cut in the 1N thickness direction with a 1kWCO laser. Cutting time was approximately 10 seconds. In comparison, an uncolored alumina sintered body (same size) costs 1kwCO! Cutting was performed in the same manner using a laser. The cutting time was approximately 20 seconds.
このようｌこ、本発明のセラミックスのレーザ加工法に
よると、従来に比較してアルミナの切断時間が約％Ｉこ
短縮された。As described above, according to the ceramic laser processing method of the present invention, the cutting time for alumina was reduced by about % I compared to the conventional method.
本発明によれば、セラミックスの切断、溶接および表面
改質などをレーザ加工する際、セラミックスを予め着色
させることで、レーザビームのエネルギー吸収率を増加
させることでレーザ加工時間を短縮し、加工を効率的に
行なうことが可能となる効果がある。According to the present invention, when performing laser processing such as cutting, welding, and surface modification of ceramics, by coloring the ceramics in advance, the energy absorption rate of the laser beam is increased, thereby shortening the laser processing time and processing. This has the effect of making it possible to carry out the process efficiently.
Claims (2)
レーザ照射で加工する際、セラミックスを熱処理して予
め改色してから加工することを特徴とするレーザ加工方
法。(1) A laser processing method characterized in that when processing ceramics by laser irradiation such as cutting, welding, and surface modification, the ceramics are heat-treated to change the color before processing.
を特徴とする請求項１記載のレーザ加工方法。(2) The laser processing method according to claim 1, wherein the color change is performed by irradiating a high-energy beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63068153A JPH01241389A (en) | 1988-03-24 | 1988-03-24 | Laser beam machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63068153A JPH01241389A (en) | 1988-03-24 | 1988-03-24 | Laser beam machining method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01241389A true JPH01241389A (en) | 1989-09-26 |
Family
ID=13365511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63068153A Pending JPH01241389A (en) | 1988-03-24 | 1988-03-24 | Laser beam machining method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01241389A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994027930A1 (en) * | 1993-06-01 | 1994-12-08 | Sumitomo Electric Industries, Ltd. | Ceramic sintered body and method of processing surface of body |
| JP2014069211A (en) * | 2012-09-28 | 2014-04-21 | Koa Corp | Machining device of ceramics material and machining method of ceramics material |
| JP2020120519A (en) * | 2019-01-24 | 2020-08-06 | トヨタ自動車株式会社 | Power converter and manufacturing method thereof |
-
1988
- 1988-03-24 JP JP63068153A patent/JPH01241389A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994027930A1 (en) * | 1993-06-01 | 1994-12-08 | Sumitomo Electric Industries, Ltd. | Ceramic sintered body and method of processing surface of body |
| JP2014069211A (en) * | 2012-09-28 | 2014-04-21 | Koa Corp | Machining device of ceramics material and machining method of ceramics material |
| JP2020120519A (en) * | 2019-01-24 | 2020-08-06 | トヨタ自動車株式会社 | Power converter and manufacturing method thereof |
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