JPS62170468A - Treatment of surface layer with laser - Google Patents
Treatment of surface layer with laserInfo
- Publication number
- JPS62170468A JPS62170468A JP61009869A JP986986A JPS62170468A JP S62170468 A JPS62170468 A JP S62170468A JP 61009869 A JP61009869 A JP 61009869A JP 986986 A JP986986 A JP 986986A JP S62170468 A JPS62170468 A JP S62170468A
- Authority
- JP
- Japan
- Prior art keywords
- film
- metallic
- surface layer
- layer
- gas
- 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
- 239000002344 surface layer Substances 0.000 title claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 47
- 229910052751 metal Inorganic materials 0.000 claims abstract description 47
- 239000010410 layer Substances 0.000 claims abstract description 14
- 238000007750 plasma spraying Methods 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 239000007769 metal material Substances 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 29
- 150000001875 compounds Chemical class 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 238000005542 laser surface treatment Methods 0.000 claims description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 3
- 239000005977 Ethylene Substances 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 239000012298 atmosphere Substances 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 7
- 229910052719 titanium Inorganic materials 0.000 abstract description 6
- 230000001678 irradiating effect Effects 0.000 abstract description 2
- 238000003786 synthesis reaction Methods 0.000 abstract description 2
- 239000010936 titanium Substances 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 10
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000007751 thermal spraying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/18—After-treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Laser Beam Processing (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、例えば金属管内面に溶射して形成した金属
膜表面の耐摩耗性、耐蝕性の向上を図るレーザ表層処理
法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a laser surface treatment method for improving the wear resistance and corrosion resistance of the surface of a metal film formed by thermal spraying, for example, on the inner surface of a metal tube.
例えば金属管の内外面にチタン等をコーティングして管
表面の耐摩耗性、耐蝕性を向上させることが油井管等に
要求されている。For example, oil country tubular goods and the like are required to coat the inner and outer surfaces of metal pipes with titanium or the like to improve the wear resistance and corrosion resistance of the pipe surfaces.
従来、金属管の内外面をコーティングして表面を高機能
化する代表的方法としてプラズマ溶射法がある。Conventionally, plasma spraying is a typical method for coating the inner and outer surfaces of a metal tube to make the surface highly functional.
プラズマ溶射法は超高温のプラズマジェットヲ利用して
、チタン、タングステン等の高融点材料の粉末を溶融し
、金属管表面に高速で吹き付け、高密度でかつ高速度の
被覆を行なう方法力ｔあり、比較的厚い膜が早い成膜速
度で形成されるという利点がある。Plasma spraying is a method that uses ultra-high temperature plasma jets to melt powder of high melting point materials such as titanium and tungsten and sprays it onto the surface of metal tubes at high speed, creating a high-density and high-speed coating. This method has the advantage that a relatively thick film can be formed at a fast deposition rate.
上記プラズマ溶射法においてプラズマ溶射雰囲気中で溶
射材として例えばＴｉＮ粉末を用いて金属管の表面にＴ
ｉＮの被膜を形成した場合、溶射中にＴＩＮの一部がチ
タンと窒素に分解し、被膜が部分的にチタンによって形
成され、完全なＴｉＮ被膜の形成が困難であった。この
ため耐蝕性等に所定の性能が得られないという問題点が
あった。また溶耐層に数チ以上の空孔が存在し、これも
耐蝕性を損ねる原因の一つである。In the above plasma spraying method, TiN powder, for example, is used as a spraying material in a plasma spraying atmosphere to coat the surface of a metal tube with T.
When forming an iN film, part of the TIN decomposed into titanium and nitrogen during thermal spraying, and the film was partially formed of titanium, making it difficult to form a complete TiN film. For this reason, there was a problem in that a predetermined performance such as corrosion resistance could not be obtained. In addition, the melt-resistant layer has several pores or more, which is also one of the causes of deteriorating corrosion resistance.
この発明はかかる問題点を解決するためになされたもの
であり、耐摩耗性、耐蝕性の良好な被膜を形成すること
ができるレーザ表層処理法を提案することを目的とする
ものである。This invention was made to solve these problems, and it is an object of the present invention to propose a laser surface treatment method that can form a coating with good wear resistance and corrosion resistance.
この発明に係るレーザ表層処理法は、プラズマ溶射によ
り金属材の表面に金属膜を形成後、雰囲気ガスのもとで
上記金属膜表面にレーザ光を照射し、金属膜の溶融する
表層を雰囲気ガスとの反応化合物層とすることを特徴と
する。In the laser surface treatment method according to the present invention, after forming a metal film on the surface of a metal material by plasma spraying, the surface of the metal film is irradiated with a laser beam under an atmospheric gas, and the melting surface layer of the metal film is heated under an atmospheric gas. It is characterized by being a reactive compound layer with.
この発明においては、プラズマ溶射により形成された被
膜を雰囲気ガス中でレーザ光照射することにより、被膜
表層に反応化合物層を形成するから、被膜表面の硬度を
高める。また、表層が溶融することによって、空孔が消
滅し腐食ガス、液体の侵透を防止できる。In this invention, the coating formed by plasma spraying is irradiated with laser light in an atmospheric gas to form a reactive compound layer on the surface of the coating, thereby increasing the hardness of the coating surface. Furthermore, by melting the surface layer, the pores disappear, thereby preventing the penetration of corrosive gases and liquids.
第１図はこの発明の一実施例を示す説明図であり、図に
おいて１は金属管、２は金属管１の内面に形成した例え
ばＴＩからなる金属膜、６，４は各各金属管１内部を密
封するため金属管１０両端に取付けられた密封蓋、５は
密封蓋３に設けられた雰囲気ガス供給口、６は密封蓋４
に設げられた排気口、７は密封蓋４に取付けられ矢印８
方向に移動可能な集光系であり長焦点距離の集光レンズ
１３を有する。９は集光系７に入射てるレーザ光、１０
は反射鏡である。FIG. 1 is an explanatory diagram showing an embodiment of the present invention. In the figure, 1 is a metal tube, 2 is a metal film made of, for example, TI formed on the inner surface of the metal tube 1, and 6 and 4 are each metal tube 1. A sealing lid is attached to both ends of the metal tube 10 to seal the inside, 5 is an atmospheric gas supply port provided in the sealing lid 3, and 6 is a sealing lid 4.
An exhaust port 7 is attached to the sealing lid 4 and is indicated by an arrow 8.
It is a condensing system movable in the direction, and has a condensing lens 13 with a long focal length. 9 is the laser beam incident on the condensing system 7, 10
is a reflector.
上記構成により金属管１の内面にレーザ表層処理を行な
うには、まず金属管１の内面にプラズマ溶射により例え
ばＴｉを溶射し溶射金属膜２を形成する。次に第１図に
示すように金属管１の両端を密封蓋３・４で密閉した後
、金属管１を不図示の回転装置により管軸心を中心に回
転しながら、雰囲気ガス供給口５から雰囲気ガスを供給
しつつ金属膜２にレーザ光９を照射する。この雰囲気ガ
ス中で金属膜２にレーザ光９を照射することにより、金
属膜２の表層が溶融し、第２図に示すように溶融池１１
を形成する。一方雰囲気ガスもレーザ光９により活性化
され、活性化された雰囲気ガスと溶融池１１の金属が合
成反応を起こし、金属膜２の表層に反応生成物を形成す
る。そこで集光系７を矢印８の方向に順次移動してレー
ザ光９の照射位置を変えろことにより、金属膜２０表層
に反応化合物層１２を形成することができる。In order to perform laser surface treatment on the inner surface of the metal tube 1 with the above configuration, first, for example, Ti is sprayed on the inner surface of the metal tube 1 by plasma spraying to form a sprayed metal film 2. Next, as shown in FIG. 1, after sealing both ends of the metal tube 1 with sealing lids 3 and 4, the metal tube 1 is rotated around the tube axis by a rotating device (not shown), and the atmospheric gas supply port 5 is rotated. The metal film 2 is irradiated with a laser beam 9 while supplying atmospheric gas from the metal film 2 . By irradiating the metal film 2 with the laser beam 9 in this atmospheric gas, the surface layer of the metal film 2 is melted, and a molten pool 11 is formed as shown in FIG.
form. On the other hand, the atmospheric gas is also activated by the laser beam 9, and the activated atmospheric gas and the metal of the molten pool 11 cause a synthetic reaction, forming a reaction product on the surface layer of the metal film 2. Therefore, by sequentially moving the condensing system 7 in the direction of the arrow 8 to change the irradiation position of the laser beam 9, the reactive compound layer 12 can be formed on the surface layer of the metal film 20.
上記レーザ表層処理の際に金属膜２な形成する金属とし
てＴｉ、Ｎｉ等を使用し、雰囲気ガスとして窒素雰囲気
ガスあるいはエチレン雰囲気ガスを使用することにより
、反応化合物層１２を高硬度とすることができる。例え
ば金属膜２をＴｉで形成し、雰囲気ガスとして窒素雰囲
気ガスを使用すると、Ｔｉ＋Ｎｔ→ＴｉＮ
の合成反応を生じ、反応化合物１ｔｉ１２としてＴｉＮ
被覆が均一に形成されＴｉの金属膜２０梗度より大幅に
硬度をあげろことができる。By using Ti, Ni, etc. as the metal to form the metal film 2 during the laser surface treatment, and using nitrogen atmosphere gas or ethylene atmosphere gas as the atmosphere gas, the reaction compound layer 12 can be made highly hard. can. For example, if the metal film 2 is formed of Ti and a nitrogen atmosphere gas is used as the atmospheric gas, a synthesis reaction of Ti+Nt→TiN will occur, and the reaction compound 1ti12 will be TiN.
The coating is uniformly formed, and the hardness can be significantly increased compared to the 20 hardness of the Ti metal film.
以下、この実施例のレーザ表層処理法によりステンレス
鋼（ＳＵＳ３０４）からなる金属管１の内面にコーティ
ングした場合の具体例を説明する。Hereinafter, a specific example will be described in which the inner surface of the metal tube 1 made of stainless steel (SUS304) is coated by the laser surface treatment method of this embodiment.
〔具体例１〕
まず、溶射飼料に粒径６０μｍのＴｉ粉末を使用し、供
給量１７ｒ／ａ、出力４ Ｑ ｋＷで金属管内面とトー
チ間の距離を３５０１ｍとし、溶射雰囲気圧４０トール
のもとでプラズマガスとしてアルゴンガス５０ ｔ／−
＊、水素ガス８．５１ ／Ｉ＆＋を用いプラズマ溶射に
より金属管１の内面に膜厚２００μｍのＴｉの金属膜２
を形成した。[Specific Example 1] First, Ti powder with a particle size of 60 μm was used as thermal spray feed, the feed rate was 17 r/a, the output was 4 Q kW, the distance between the inner surface of the metal tube and the torch was 3501 m, and the thermal spraying atmospheric pressure was 40 Torr. and 50 t/- of argon gas as plasma gas.
*A Ti metal film 2 with a thickness of 200 μm is formed on the inner surface of the metal tube 1 by plasma spraying using hydrogen gas 8.51 /I&+.
was formed.
次に、窒素雰囲気ガスの下で、焦点距離２５４■、角点
位置が照射面より５０ｍ先になるように調整した集光系
７を用い、５１ｃＷのＣＯｔレーザを金属膜２に照射し
た。Next, under a nitrogen gas atmosphere, the metal film 2 was irradiated with a 51 cW COt laser using a condensing system 7 adjusted to have a focal length of 254 mm and a corner position 50 m ahead of the irradiation surface.
この結果、金属膜２０表１けは６０μｍ溶融し、黄金色
のＴｉＮが反応化合物層１２として形成され、この硬度
を調べた結果Ｈｙ＝ １２００となりＴｉから形成され
た金属膜２の硬度Ｈｖ＝１４０と比し大巾Ｋ１１ｉ２！
度を高めることができた。As a result, the metal film 20 was melted to a thickness of 60 μm, and golden TiN was formed as the reaction compound layer 12. The hardness of this layer was investigated as Hy=1200, and the hardness of the metal film 2 made of Ti was Hv=140. Compared to the large width K11i2!
I was able to increase my level.
なお、雰囲気ガスとしてＨ！とＮ、の混合ガスを使用し
た場合も同様に反応化合物層１２としてＴｉＮが形成さ
れた。In addition, as an atmospheric gas, H! TiN was similarly formed as the reactive compound layer 12 when a mixed gas of N and N was used.
〔具体例２〕
上記具体例１と同一条件のもとで雰囲気ガスのみエチレ
ンとアルゴンの混合ガスを使用し、レーザ照射した場合
は、上記と同様に金属膜２の表を場から６０μｍの厚さ
でＴＩＣの反応化合物層１２が形成された。[Specific Example 2] When a mixed gas of ethylene and argon is used as the atmospheric gas under the same conditions as in Specific Example 1 above, and laser irradiation is performed, the surface of the metal film 2 is coated with a thickness of 60 μm from the field in the same way as above. A reactive compound layer 12 of TIC was then formed.
この発明は以上説明したように、金属管表面にプラズマ
溶射により形成した金属被膜を雰囲気ガス中でレーザ光
照射することにより、被膜表層に反応化合物層を形成す
るから、被膜表面の硬度を高めることができ、また溶射
被膜層に残存する空孔を消滅することができ金属管表面
の耐摩耗性。As explained above, in this invention, a metal coating formed on the surface of a metal tube by plasma spraying is irradiated with laser light in an atmospheric gas to form a reactive compound layer on the surface of the coating, thereby increasing the hardness of the coating surface. It can also eliminate the pores remaining in the sprayed coating layer, making the metal tube surface wear resistant.
耐蝕性の同上を図ることができる効果を有する。This has the effect of achieving the same level of corrosion resistance.
第１図はこの発明の実施例を示す説明図、８ｇ２図は上
記実施例の部分拡大図である。
１・・・金属管、２・・・金属膜、５・・・雰囲気ガス
供給口、６・・・排出口、７・・・集光系、９・・・レ
ーザ光、１２−・・反応化合物層、１３・・・集光レン
ズ。
代理人 弁理士 佐 藤 正 年
５；慴ｌ唱負力・スＡ仄飽口FIG. 1 is an explanatory view showing an embodiment of the present invention, and FIG. 8g2 is a partially enlarged view of the above embodiment. DESCRIPTION OF SYMBOLS 1...Metal tube, 2...Metal film, 5...Atmosphere gas supply port, 6...Exhaust port, 7...Concentration system, 9...Laser light, 12-...Reaction Compound layer, 13... condensing lens. Agent: Patent Attorney Tadashi Sato 5th year;
Claims (3)
後、雰囲気ガスのもとで上記金属膜表面にレーザ光を照
射し、上記金属膜の溶融する表層を雰囲気ガスとの反応
化合物層とするレーザ表層処理法。(1) After forming a metal film on the surface of a metal material by plasma spraying, the surface of the metal film is irradiated with a laser beam under an atmospheric gas, and the melted surface layer of the metal film becomes a layer of a reaction compound with the atmospheric gas. Laser surface treatment method.
囲第１項記載のレーザ表層処理法。(2) The laser surface treatment method according to claim 1, wherein the atmospheric gas is nitrogen atmospheric gas.
る特許請求の範囲第１項記載のレーザ表層処理法。(3) The laser surface treatment method according to claim 1, wherein the atmospheric gas is a mixed gas of ethylene and argon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61009869A JPS62170468A (en) | 1986-01-22 | 1986-01-22 | Treatment of surface layer with laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61009869A JPS62170468A (en) | 1986-01-22 | 1986-01-22 | Treatment of surface layer with laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62170468A true JPS62170468A (en) | 1987-07-27 |
Family
ID=11732145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61009869A Pending JPS62170468A (en) | 1986-01-22 | 1986-01-22 | Treatment of surface layer with laser |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62170468A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012002487A1 (en) * | 2012-02-10 | 2013-08-14 | Limo Patentverwaltung Gmbh & Co. Kg | Device, useful for pre-treating a coating applied on outer side/inner side of metal workpiece e.g. pipe, comprises processing head, unit for supplying laser light to processing head or unit for generation of laser light, and optical unit |
-
1986
- 1986-01-22 JP JP61009869A patent/JPS62170468A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012002487A1 (en) * | 2012-02-10 | 2013-08-14 | Limo Patentverwaltung Gmbh & Co. Kg | Device, useful for pre-treating a coating applied on outer side/inner side of metal workpiece e.g. pipe, comprises processing head, unit for supplying laser light to processing head or unit for generation of laser light, and optical unit |
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