JPS6349744B2 - - Google Patents
Info
- Publication number
- JPS6349744B2 JPS6349744B2 JP23714684A JP23714684A JPS6349744B2 JP S6349744 B2 JPS6349744 B2 JP S6349744B2 JP 23714684 A JP23714684 A JP 23714684A JP 23714684 A JP23714684 A JP 23714684A JP S6349744 B2 JPS6349744 B2 JP S6349744B2
- Authority
- JP
- Japan
- Prior art keywords
- coating
- steel
- layer
- laser
- present
- 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.)
- Expired
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 32
- 239000010959 steel Substances 0.000 claims description 32
- 238000000576 coating method Methods 0.000 claims description 29
- 239000011248 coating agent Substances 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 20
- 239000010410 layer Substances 0.000 claims description 8
- 239000013535 sea water Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000011247 coating layer Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 5
- 239000002344 surface layer Substances 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 9
- 238000005507 spraying Methods 0.000 description 9
- 238000011282 treatment Methods 0.000 description 8
- 238000007751 thermal spraying Methods 0.000 description 6
- 239000011148 porous material Substances 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000005422 blasting Methods 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010289 gas flame spraying Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000013532 laser treatment Methods 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 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
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
-
- 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
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、海水腐蝕抵抗の特に優れた耐海水
性Al被覆鋼材の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing a seawater-resistant Al-coated steel material having particularly excellent seawater corrosion resistance.
アルミニウムは優れた耐蝕性及び耐熱性を有す
る金属であることから、鋼材等の腐蝕性金属の腐
蝕防護のために、溶融メツキ法、蒸着法、気相メ
ツキ法或いは溶射法等、種々の被覆方法により前
記腐蝕性金属表面にAl被膜の形成がなされてい
る。
Since aluminum is a metal with excellent corrosion and heat resistance, various coating methods such as hot-dip plating, vapor deposition, vapor phase plating, and thermal spraying are used to protect corrosive metals such as steel from corrosion. As a result, an Al film is formed on the surface of the corrosive metal.
そして、上記方法の内、溶射法が、溶融メツキ
或いは蒸着等による鋼材への被膜形成法に比して
設備的にも作業的にも極めて簡単あり、又容易で
あるため、溶射法が多用されるようになつた。 Among the above methods, thermal spraying is extremely simple in terms of equipment and work compared to methods of forming coatings on steel materials by hot-dip plating or vapor deposition, and is therefore often used. I started to do that.
しかし、溶射法により形成された被膜は、その
被膜層内に多くの微細気孔を内包し、しかもその
一部は貫通気孔となつて母材基地面を外気に露出
している。このために溶射法により形成された
Al被膜は、Alの優れた耐蝕性等の折角の特性が
充分に生かされていない。 However, the coating formed by the thermal spraying method contains many fine pores within the coating layer, and some of them become through pores and expose the base surface of the base material to the outside air. For this purpose, a thermal spraying method was used to form the
Al coatings do not take full advantage of the characteristics of Al, such as its excellent corrosion resistance.
Al溶射被膜の上記の問題点を解決するために、
Al溶射被膜を形成後、この被膜表面に合成樹
脂・シリコンオイル等の封孔剤を施し封孔処理す
ることが、例えば特公昭49−46461号公報、特公
昭54−32422号公報に発表されている。 In order to solve the above problems of Al spray coating,
For example, it has been announced in Japanese Patent Publications No. 49-46461 and No. 32422-1987 that after forming an Al thermal spray coating, a sealing agent such as synthetic resin or silicone oil is applied to the surface of the coating to seal the pores. There is.
又Al溶射被膜を母材に形成後、このAl溶射被
膜表面に各種金属の気相メツキを行ない封孔処理
することが、例えば特開昭55−104471号公報に発
表されている。 Furthermore, after forming an Al spray coating on a base material, vapor phase plating of various metals is performed on the surface of the Al spray coating for sealing treatment, as disclosed in, for example, JP-A-55-104471.
しかし、これら公知のAl溶射被膜の封孔処理
に使用される封孔剤は、溶射被膜形成材とは全く
異質であり、しかも耐蝕性・耐熱性も格段に劣
り、過酷な使用環境に耐える術もない。
However, the sealants used in the sealing treatment of these known Al thermal sprayed coatings are completely different from the thermal sprayed coating forming materials, and their corrosion resistance and heat resistance are also significantly inferior, making them difficult to withstand harsh usage environments. Nor.
本発明は、例えば、海洋等の腐蝕環境におい
て、極めて優れた高耐蝕性を有する耐海水性Al
被覆鋼材の製造方法を提供するこを目的になされ
たものである。 The present invention provides seawater-resistant Aluminum that has extremely high corrosion resistance in corrosive environments such as the ocean, for example.
The purpose of this invention is to provide a method for manufacturing coated steel materials.
本発明は、鉄鋼材（以下、板材・条件等を総称
して単に鋼材という）表面に溶射法・粉状被膜材
載置法により形成した金属Al被膜の改質のため
のレーザー処理による耐海水性Al被覆鋼材の製
造方法である。
The present invention provides seawater resistance through laser treatment for modifying the metallic Al coating formed on the surface of steel materials (hereinafter simply referred to as steel materials, collectively referring to plate materials, conditions, etc.) by thermal spraying and powder coating material placement methods. This is a method for manufacturing aluminum coated steel.
以下、更に本発明について詳細に述べる。 The present invention will be described in further detail below.
本発明においてAl被膜を形成するための鋼材
はその形状・品種において特に限定されるもので
はなく、鋳造品・鋼板・形鋼或は普通鋼・特殊鋼
等が対象とされるものであり、これら鋼材は、シ
ヨツトブラント・グリツドブラスト或は化学的清
浄等の適宜の手段により被膜形成に適した表面状
態に清浄化され、ついでAl被膜材をガス火炎溶
射法・プラズマ溶射法或はアーク溶射法によつて
前記表面清浄化された鋼材面に任意の厚さの被膜
層に溶射被着せしめるか、或は横臥状の鋼材上面
にAl粉も層状に載置する。 In the present invention, the steel material for forming the Al coating is not particularly limited in its shape or type, and includes cast products, steel plates, shaped steel, ordinary steel, special steel, etc. The steel material is cleaned to a surface condition suitable for film formation by appropriate means such as shot blunt blasting, grid blasting, or chemical cleaning, and then the Al coating material is applied by gas flame spraying, plasma spraying, or arc spraying. A coating layer of an arbitrary thickness is thermally sprayed onto the surface of the steel material whose surface has been cleaned by the method, or a layer of Al powder is also placed on the upper surface of the recumbent steel material.
本発明において、上記Al被膜厚みは特に限定
されることはないが、一般には40〜500μｍの範
囲においてAl被覆鋼材の使用態様に応じ市任意
に選択される。 In the present invention, the thickness of the Al coating is not particularly limited, but is generally arbitrarily selected in the range of 40 to 500 μm depending on the usage of the Al coated steel material.
上記Al溶射被膜の形成に際しては、常温の外、
予め鋼材基体を適当な温度、例えば100〜300℃に
加熱し、この温度下においてAl溶射を行なうこ
ともできる。 When forming the above Al sprayed coating, outside of room temperature,
It is also possible to heat the steel substrate in advance to a suitable temperature, for example 100 to 300°C, and perform Al thermal spraying at this temperature.
又本発明において被膜材としてのAlは工業的
純度ににおける純Alに限るものではなく、Alを
主体とし、これにMg、Zn等の金属を配合したAl
合金を含むものである。 In addition, in the present invention, Al as a coating material is not limited to pure Al at industrial purity, but may be Al containing Al as a main ingredient and mixed with metals such as Mg and Zn.
Contains alloys.
かくて得られたAl被覆鋼材は、ついでレーザ
ービーム照射処理を行なう。 The Al-coated steel thus obtained is then subjected to laser beam irradiation treatment.
本発明において照射するレーザーの種類は、特
に限定されるものはなく、例えば、CO2レーザー
が最も一般的である。又本発明において、レーザ
ービーム処理を行なうべき雰囲気は酸化性雰囲気
で行なうことが必要で、空気中で行なうのが最も
一般的であるが、N2等による窒化物の形成が好
ましくない場合は、例えばArガス・O2ガスの混
合雰囲気等合成雰囲気中で行なうこともできる。 The type of laser to be irradiated in the present invention is not particularly limited, and for example, CO 2 laser is the most common. In addition, in the present invention, the atmosphere in which the laser beam treatment should be performed must be an oxidizing atmosphere, and it is most common to perform the treatment in air, but if the formation of nitrides by N 2 etc. is undesirable, For example, it can also be carried out in a synthetic atmosphere such as a mixed atmosphere of Ar gas and O 2 gas.
本発明におけるAl被膜のレーザービームによ
る加熱処理は、Al被膜の表面部分を溶融すると
共に最表面に耐海水性の最も大なる対海水安定酸
化アルミニウム層を形成せしめられることが不可
欠である。 It is essential that the laser beam heat treatment of the Al coating in the present invention melts the surface portion of the Al coating and forms an aluminum oxide layer on the outermost surface that is stable to seawater and has the highest seawater resistance.
このようにして得られるレーザー照射処理後の
Al被膜の最表面層には対海水安定性の極めて大
なる酸化アルミニウムが形成されると共に、表層
部は溶融凝固層が一様に形成され、Al溶射被膜
の表面近傍の微細気孔は全て溶射被膜材である
Alによつて融着封孔され、鋼材基体はそれが使
用される環境から完全に絶縁保護される。 After laser irradiation treatment obtained in this way
Aluminum oxide with extremely high stability against seawater is formed on the outermost layer of the Al coating, and a molten solidified layer is uniformly formed on the surface layer, and all the fine pores near the surface of the Al spray coating are covered by the spray coating. is a material
The holes are fused and sealed with Al, and the steel substrate is completely insulated and protected from the environment in which it is used.
本発明におけるAl溶射被膜のレーザー照射処
理は上記の如くであるが、更に必要に応じてレー
ザー出力を強化してAl溶射被膜と鋼材基体との
界面の昇熱を行い、Alを地鉄中に拡散させ、被
膜密着性を向上することももできるが、更に被膜
層全体を溶融凝固することもできる。特に被膜材
の鋼材表面に層状載置されている場合は、被膜層
全層及び鋼材界面に互つて溶着処理することが必
要である。 The laser irradiation treatment of the Al sprayed coating in the present invention is as described above, but if necessary, the laser output is further strengthened to raise the temperature at the interface between the Al sprayed coating and the steel substrate, and Al is deposited into the steel base. Although it is possible to improve coating adhesion by diffusion, it is also possible to melt and solidify the entire coating layer. In particular, when the coating material is placed in layers on the steel surface, it is necessary to weld the entire coating layer and the steel interface.
又本発明においてはAl被膜のレーザー照射処
理に際して鋼材基体を予め加熱し、例えば350〜
450℃の温度に保持せしめておくことにより被膜
安定或いは昇熱部の硬化を減少せしめられること
ができる。 In addition, in the present invention, the steel substrate is heated in advance during the laser irradiation treatment of the Al coating, e.g.
By maintaining the temperature at 450°C, the film can be stabilized or hardening of the heated portion can be reduced.
又上記のレーザー照射において被膜面からの反
射ビームによるレーザー照射装置の損傷を防ぐた
めに斜角照射を行なうことが望ましい。 Further, in the above laser irradiation, it is desirable to perform oblique irradiation in order to prevent damage to the laser irradiation device due to the beam reflected from the coating surface.
本発明のAl被覆鋼材の製造方法は上記の如く
であるので、腐蝕環境、例えば塩水環境において
極めて腐蝕抵抗に里れ、しかも密着性の大なる
Al被膜形成鋼材を容易に得ることができる。
Since the method for manufacturing the Al-coated steel of the present invention is as described above, it has excellent corrosion resistance in a corrosive environment, for example, a salt water environment, and has excellent adhesion.
Al-coated steel can be easily obtained.
以下、更にその実施例について述べる。 Examples will be further described below.
鋼板表面をシヨツトブラストにより溶射被膜形
成に適する表面性状に清浄化した後、これにAl
をプラズマアーク溶射法により50μｍの厚さに溶
射被膜を形成した。このAl溶射鋼板を大気中に
おいて3.5Kw出力のCO2レーザービーム円0.08
ｍ／minの移動速度にてAl溶射被膜表面部を焦点
として照射加熱溶融すると共に、その表面Alを
酸化させ、腐蝕環境、特に塩水に安定な酸化アル
ミニウムを形成させた。 After cleaning the steel plate surface by shot blasting to a surface quality suitable for forming a thermal spray coating, this is coated with Al.
A thermally sprayed coating with a thickness of 50 μm was formed using the plasma arc spraying method. This Al sprayed steel plate is exposed to a 3.5Kw output CO 2 laser beam with a circle of 0.08 in the atmosphere.
The aluminum sprayed coating was irradiated and heated at a moving speed of m/min, focusing on the surface and melting, and the surface Al was oxidized to form aluminum oxide, which is stable in a corrosive environment, especially salt water.
かくて得られたレーザー処理Al溶射被膜は、
表層部は溶射被膜特有の微細気孔の消滅した酸化
アルミニウムからなる溶融凝固層となつていた。 The laser-treated Al sprayed coating thus obtained is
The surface layer was a molten solidified layer of aluminum oxide in which the fine pores characteristic of thermally sprayed coatings had disappeared.
更にこの処理鋼板を塩水噴霧試験（JISZ2371）
より腐蝕試験を行つたが、未処理のAl溶射鋼板
比して腐蝕減量において大差を得た。 Furthermore, this treated steel plate was subjected to a salt spray test (JISZ2371).
Further corrosion tests were conducted, and a large difference in corrosion weight loss was obtained compared to untreated Al sprayed steel sheets.
Claims (1)
囲気中において前記形成被膜にレーザー照射を行
い、該形成被膜層の一部に最表面層が安定な酸化
アルミニウム層である溶融処理層を形成すること
を特徴とする耐海水性Al被覆鋼材の製造方法。1 After forming an Al metal coating on the steel surface, the formed coating is irradiated with a laser in an oxidizing atmosphere to form a melt-treated layer whose outermost surface layer is a stable aluminum oxide layer on a part of the formed coating layer. A method for producing a seawater-resistant Al-coated steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23714684A JPS61113756A (en) | 1984-11-09 | 1984-11-09 | Manufacture of seawater-resistant al-coated steel material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23714684A JPS61113756A (en) | 1984-11-09 | 1984-11-09 | Manufacture of seawater-resistant al-coated steel material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61113756A JPS61113756A (en) | 1986-05-31 |
| JPS6349744B2 true JPS6349744B2 (en) | 1988-10-05 |
Family
ID=17011085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23714684A Granted JPS61113756A (en) | 1984-11-09 | 1984-11-09 | Manufacture of seawater-resistant al-coated steel material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61113756A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2788246B2 (en) * | 1988-03-25 | 1998-08-20 | 株式会社東芝 | Material surface treatment method and its surface treatment device |
| DE10322519A1 (en) * | 2003-05-19 | 2004-12-09 | Voith Paper Patent Gmbh | Web guiding means |
| DE102006046503A1 (en) * | 2006-08-18 | 2008-02-21 | Mg-Micro Galva Gmbh | Laser oxidation of magnesium, titanium or aluminum materials |
| DE102006051709A1 (en) * | 2006-10-30 | 2008-05-08 | AHC-Oberflächentechnik GmbH | Production of wear-resistant coatings on materials made of barrier-layer-forming metals or their alloys by means of laser treatment |
| JP2009062587A (en) * | 2007-09-07 | 2009-03-26 | Global Mach Kk | Method for depositing alumina layer and coating film of base material |
| DE102009054394B8 (en) * | 2009-11-17 | 2013-06-13 | Technische Universität Dresden | Method for the defined modification of surfaces of a workpiece |
| JP7059810B2 (en) * | 2018-05-30 | 2022-04-26 | 株式会社デンソー | Surface covering member and its manufacturing method |
| CN109112461B (en) * | 2018-09-30 | 2020-10-09 | 常州大学 | Method for preparing aluminum-based amorphous composite ceramic coating on surface of ocean platform steel by laser two-step method |
| JP7095010B2 (en) * | 2020-03-24 | 2022-07-04 | 本田技研工業株式会社 | Oxide film and parts with oxide film |
-
1984
- 1984-11-09 JP JP23714684A patent/JPS61113756A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61113756A (en) | 1986-05-31 |
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