JP2002088462A - Method for sealing treatment, sealing-treated sprayed deposit, and fan or blower each having the deposit - Google Patents
Method for sealing treatment, sealing-treated sprayed deposit, and fan or blower each having the depositInfo
- Publication number
- JP2002088462A JP2002088462A JP2000280583A JP2000280583A JP2002088462A JP 2002088462 A JP2002088462 A JP 2002088462A JP 2000280583 A JP2000280583 A JP 2000280583A JP 2000280583 A JP2000280583 A JP 2000280583A JP 2002088462 A JP2002088462 A JP 2002088462A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- sealing
- coating
- sprayed coating
- sprayed
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、溶射法によって、
物体の上に形成された、サーメット、セラミックスまた
は金属皮膜を樹脂などを用いて皮膜表面及び皮膜の内部
にある微細な孔などを封孔処理する方法及び封孔処理し
た溶射皮膜に関するものである。本発明は被溶射物体の
防錆、耐摩耗性、皮膜の耐剥離性を向上させる役割を果
たすものである。TECHNICAL FIELD The present invention relates to a method for spraying
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for sealing a cermet, ceramics, or metal film formed on an object with a resin or the like using a resin or the like to a fine hole or the like in the film surface and the inside of the film, and a thermal sprayed film subjected to the sealing treatment. The present invention plays a role in improving the rust prevention and abrasion resistance of the object to be sprayed and the peeling resistance of the coating.
【０００２】[0002]
【従来の技術】金属などの基盤表面に、耐摩耗性、耐熱
性、耐食性に優れたサーメットやセラミックスまたは合
金を被覆することは一般的な手法として用いられる。こ
れらの被覆によく用いられる手法としてサーメットやセ
ラミックスの粉末、または合金金属ワイヤーなどを火炎
を通して吹き付ける溶射法が知られている。通常、溶射
したままの皮膜には、数μｍまたは、それ以下の大きさ
の気孔が体積率で２〜１０%程度も存在し、さらにこれ
らの気孔間を連結するかたちでマイクロクラックが入る
場合もある。これらの気孔、マイクロクラックは、通
常、基盤表面から溶射皮膜表面に開口している場合が多
く、腐食性を有する液体または気体がこのマイクロクラ
ックに侵入してしまうため耐食性を要求される環境には
溶射法が適用できないことになるが、一般にこれらの気
孔、マイクロクラックを封鎖する封孔処理が行われる。
この封孔処理方法には、各種の無機、有機の封孔剤が適
用され、封孔剤の種類（例えば特開平5-２７９８３３号
公報，特許第２７２９９３５号公報、特公平２−５６４
２７号公報）や硬化方法（例えば特公平２−５６４２７
号公報、特開平５−１０６０１４号公報）の発明が多く
開示されている。2. Description of the Related Art It is a general technique to coat a base material such as a metal with a cermet, a ceramic or an alloy having excellent wear resistance, heat resistance and corrosion resistance. As a method often used for these coatings, there is known a thermal spraying method in which a cermet, ceramic powder, alloy metal wire, or the like is sprayed through a flame. Usually, in the film as sprayed, pores of several μm or less are present in a volume ratio of about 2 to 10%, and micro cracks may be formed in a form connecting these pores. is there. These pores and microcracks usually open from the base surface to the sprayed coating surface in many cases, and corrosive liquids or gases penetrate into these microcracks, so in environments where corrosion resistance is required, Although the thermal spraying method cannot be applied, a sealing treatment for closing these pores and micro cracks is generally performed.
In this sealing method, various inorganic and organic sealing agents are applied, and the types of sealing agents (for example, JP-A-5-279833, JP2729935, JP-B2-564)
No. 27 gazette) and a curing method (for example, Japanese Patent Publication No. 2-56427).
And Japanese Patent Application Laid-Open No. Hei 5-106014).
【０００３】[0003]
【発明が解決しようとする課題】従来、これらの気孔、
マイクロクラックの封鎖は、具体的にセラミック溶射皮
膜を例にとると、フェノール樹脂、シリコーン樹脂、エ
ポキシ樹脂などの有機剤や水ガラス、エチルシリケート
などの無機剤を封孔剤として皮膜中に含浸して硬化させ
る封孔処理が一般的に行われてきた。しかし、これらの
封孔処理方法においては、封孔剤のほとんどは溶射皮膜
の表面に付着しているだけであり、表層の内部の一定の
深さにまで含浸させることは出来ず、溶射皮膜表面の摩
耗が進行すると早々にその封孔機能を失っていた。 こ
れらの封孔剤は、場合によって、真空や加圧を利用した
含浸も行われているが、それらの方法をもっても封孔剤
の粘度や表面張力、封孔剤中に分散している有機、無機
の分子サイズが大きいことなどによって、封孔剤の内部
への浸透、すなわち、摩耗に対しての封孔機能維持が困
難であった。特に、サーメット材料やセラミックス材料
の溶射において、その溶射皮膜の緻密さから多用される
高速ガス溶射法やプラズマ溶射法では、気孔、マイクロ
クラックの大きさが極めて小さいことから封孔処理剤が
含浸しにくいため、前述の封孔機能維持に困難を極めて
いた。Conventionally, these pores,
For example, using a ceramic sprayed coating as an example, microcracks can be sealed by impregnating the coating with an organic agent such as phenolic resin, silicone resin, or epoxy resin, or an inorganic agent such as water glass or ethyl silicate. In general, a sealing treatment for hardening is performed. However, in these sealing treatment methods, most of the sealing agent only adheres to the surface of the sprayed coating, and cannot be impregnated to a certain depth inside the surface layer. As the abrasion progressed, the sealing function was quickly lost. In some cases, these sealing agents are impregnated using vacuum or pressure.However, even with these methods, the viscosity and surface tension of the sealing agent, organics dispersed in the sealing agent, Due to the large inorganic molecular size, it is difficult to penetrate the inside of the sealing agent, that is, to maintain the sealing function against abrasion. In particular, in the thermal spraying of cermet materials and ceramic materials, high-speed gas spraying and plasma spraying methods, which are frequently used due to the denseness of the sprayed coating, impregnate with a sealing agent because the size of pores and microcracks is extremely small. Therefore, it was extremely difficult to maintain the above-mentioned sealing function.
【０００４】さらに、ガス中にＳＯｘなど腐食性物質
（低温になると硫酸を生成）と硬い粉塵を含有するファ
ン、ブロワーの翼板や、主板は、この課題に直面する代
表的な機械部品であり、そのメンテナンス負荷、修繕費
用について改善が強く望まれていた。本発明は従来、封
孔機能維持が困難とされてきた腐食かつ摩耗環境におい
ても、耐摩耗性、耐食性を長期間維持することが出来る
封孔処理方法及び封孔処理された溶射皮膜とそれを施し
たファンまたはブロワーを提供することを目的とする。Further, fan, blower blades and main plates containing corrosive substances such as SOx (sulfuric acid is generated at low temperature) and hard dust in gas are typical mechanical parts that face this problem. There has been a strong demand for improvements in maintenance load and repair costs. The present invention relates to a sealing method and a spray-coated film capable of maintaining abrasion resistance and corrosion resistance for a long period of time even in a corrosive and abrading environment where maintaining the sealing function has been difficult, and The purpose is to provide a fan or blower.
【０００５】[0005]
【課題を解決するための手段】このような課題に対して
本発明の要旨とするところは、 （１）溶射皮膜内部の空孔よりも小さな粒子径の樹脂を
溶媒中に分散させた樹脂エマルジョンを溶射皮膜表面に
塗布、含浸させた後、前記皮膜内部の空孔を前記樹脂成
分で埋める溶射皮膜の封孔処理方法である。 （２）そして、樹脂の平均粒径が０．０１〜１０μｍの
樹脂エマルジョンによる（１）の溶射皮膜封孔処理方法
である。 （３）また、樹脂エマルションを構成する樹脂が、シリ
コン樹脂、ポリエステル、ポリカーボネート、セルロー
スアセテート、酢酸ビニル、エチレン-酢酸ビニル共重
合体、フェノール樹脂、テルペンフェノール樹脂、ポリ
イミド、ブチラール樹脂、ユリア樹脂、メラニン樹脂、
エポキシ樹脂、アルキド樹脂、ウレタン樹脂、フラン樹
脂、ポリエチレン、ポリプロピレン、ポリブデン、ポリ
メチルペンテン、ポリアセタール、ポリエチレンテフタ
レート、ナイロン、フッ素樹脂、ポリ塩化ビニル、ポリ
塩化ビニルデン、ポリスチレン、ＡＢＳ樹脂、アクリル
樹脂、フェノキシ樹脂、ポリフェニレンオキサイド、ポ
リスルホン、アイオノマー、スチレンブタジエンのいず
れか１種または２種以上を混合した樹脂からなる（１）
または（２）記載の溶射皮膜の封孔処理方法である。 （４）さらに、封孔処理する溶射皮膜が、 ＷＣ−Ｃ
ｏ，ＷＣ−ＮｉＣｒ，ＣｒＣ−ＮｉＣｒ，ＣｏＣｒＡｌ
Ｙ、ＣｏＮｉＣｒＡｌＹ、アルミナ、窒化珪素、クロミ
ナ、シリカ、ジルコニア、ステンレスをはじめとする鉄
基合金、Ｎｉ基合金、Ｃｏ基合金からなる（１）〜
（３）のいずれか１項に記載の溶射皮膜封孔処理方法で
ある。 （５）また、（１）から（４）のいずれか１項に記載の
方法により封孔処理した溶射皮膜である。 （６）そして、（５）記載の溶射皮膜を、表面の一部ま
たは全部に施したファンまたはブロワーである。SUMMARY OF THE INVENTION In order to solve the above problems, the gist of the present invention is as follows. (1) A resin emulsion in which a resin having a particle size smaller than the pores inside the thermal spray coating is dispersed in a solvent Is applied and impregnated on the surface of the sprayed coating, and then the pores inside the coating are filled with the resin component. (2) The method of (1) for sealing a thermal spray coating with a resin emulsion having an average particle size of the resin of 0.01 to 10 μm. (3) Further, the resin constituting the resin emulsion is silicone resin, polyester, polycarbonate, cellulose acetate, vinyl acetate, ethylene-vinyl acetate copolymer, phenol resin, terpene phenol resin, polyimide, butyral resin, urea resin, melanin resin,
Epoxy resin, alkyd resin, urethane resin, furan resin, polyethylene, polypropylene, polybutene, polymethylpentene, polyacetal, polyethylene terephthalate, nylon, fluororesin, polyvinyl chloride, polyvinyl chloride, polystyrene, ABS resin, acrylic resin, phenoxy Resin, polyphenylene oxide, polysulfone, ionomer, styrene butadiene consists of a resin or a mixture of two or more (1)
Or the method for sealing a thermal sprayed coating according to (2). (4) Further, the thermal spray coating to be subjected to the sealing treatment is WC-C
o, WC-NiCr, CrC-NiCr, CoCrAl
Y, CoNiCrAlY, alumina, silicon nitride, chromina, silica, zirconia, iron-based alloys including stainless steel, Ni-based alloys, Co-based alloys (1) to
(3) The thermal spray coating sealing method according to any one of the above (3). (5) A sprayed coating that has been sealed by the method according to any one of (1) to (4). (6) A fan or blower in which the thermal spray coating described in (5) is applied to part or all of the surface.
【０００６】[0006]
【発明の実施の形態】溶射皮膜に内在する、気孔やマイ
クロクラックは、特に高速ガス溶射などではその大きさ
が極めて小さく、また、その占める割合は数％以下と少
ないため、気孔、マイクロクラックに浸透していくため
には、封孔剤の粘度、表面張力の小さいことと合わせ
て、封孔成分分子のサイズが気孔、マイクロクラックの
大きさに対して十分小さい必要がある。本発明による方
法では樹脂エマルジョンの樹脂のサイズをこの気孔、マ
イクロクラックより小さくして浸透および硬化後の封孔
を可能とした。BEST MODE FOR CARRYING OUT THE INVENTION The pores and microcracks contained in a thermal spray coating are extremely small, especially in high-speed gas spraying, and their occupying ratio is as small as several percent or less. In order to penetrate, the size of the sealing component molecules needs to be sufficiently smaller than the size of the pores and microcracks, in addition to the low viscosity and surface tension of the sealing agent. In the method according to the present invention, the size of the resin in the resin emulsion is made smaller than the pores and microcracks to enable the sealing after penetration and curing.
【０００７】樹脂エマルジョンを作成する際の溶媒とし
ては、水、アルコール類、油類等を用いることが出来る
が、樹脂の分散を安定にさせる分散剤の選定が比較的容
易なことから、水が好ましい。溶射皮膜に樹脂エマルジ
ョンを塗布、含浸させた後、樹脂の架橋反応により皮膜
内部の空孔を樹脂成分で埋めることになる。この機構に
より溶射皮膜内部まで樹脂を含浸させると共に強固な樹
脂強度を発現させることが可能となった。樹脂粒径は空
孔、マイクロクラックより十分に小さいことが要求され
るため、実際の空孔、マイクロクラックの大きさがμm
オーダーであるのに対し平均粒径が０．０１μmから１
０μm以下とすることが好ましい。Water, alcohols, oils, and the like can be used as a solvent for preparing the resin emulsion. However, since it is relatively easy to select a dispersant for stabilizing the resin dispersion, water is used. preferable. After coating and impregnating the sprayed coating with the resin emulsion, the pores inside the coating are filled with a resin component by a crosslinking reaction of the resin. This mechanism makes it possible to impregnate the resin into the inside of the thermal spray coating and develop strong resin strength. Since the resin particle size is required to be sufficiently smaller than the pores and microcracks, the actual size of the pores and microcracks is μm
Average particle size from 0.01 μm to 1
It is preferably set to 0 μm or less.
【０００８】樹脂エマルションを構成する樹脂として
は、封孔を必要とする環境に応じて、耐熱性や耐薬品性
などの観点から、シリコン樹脂、ポリエステル、ポリカ
ーボネート、セルロースアセテート、酢酸ビニル、エチ
レン-酢酸ビニル共重合体、フェノール樹脂、テルペン
フェノール樹脂、ポリイミド、ブチラール樹脂、ユリア
樹脂、メラニン樹脂、エポキシ樹脂、アルキド樹脂、ウ
レタン樹脂、フラン樹脂、ポリエチレン、ポリプロピレ
ン、ポリブデン、ポリメチルペンテン、ポリアセター
ル、ポリエチレンテフタレート、ナイロン、フッ素樹
脂、ポリ塩化ビニル、ポリ塩化ビニルデン、ポリスチレ
ン、ＡＢＳ樹脂、アクリル樹脂、フェノキシ樹脂、ポリ
フェニレンオキサイド、ポリスルホン、アイオノマー、
スチレンブタジエンのいずれか１種または２種以上を混
合した樹脂を用いることが好ましい。The resin constituting the resin emulsion may be selected from the group consisting of silicone resin, polyester, polycarbonate, cellulose acetate, vinyl acetate, ethylene-acetic acid, and the like, from the viewpoint of heat resistance and chemical resistance, depending on the environment requiring sealing. Vinyl copolymer, phenolic resin, terpene phenolic resin, polyimide, butyral resin, urea resin, melanin resin, epoxy resin, alkyd resin, urethane resin, furan resin, polyethylene, polypropylene, polybutene, polymethylpentene, polyacetal, polyethylene terephthalate , Nylon, fluorine resin, polyvinyl chloride, polyvinyl chloride, polystyrene, ABS resin, acrylic resin, phenoxy resin, polyphenylene oxide, polysulfone, ionomer,
It is preferable to use a resin obtained by mixing one or more of styrene butadiene.
【０００９】溶射皮膜は、特に耐摩耗性および耐食性を
考慮すると ＷＣ−Ｃｏ，ＷＣ−ＮｉＣｒ，ＣｒＣ−Ｎ
ｉＣｒ，ＣｏＣｒＡｌＹ、ＣｏＮｉＣｒＡｌＹなどのサ
ーメット系材料、アルミナ、窒化珪素、クロミナ、シリ
カ、ジルコニアなどのセラミックス系材料、ステンレス
をはじめとする鉄基合金やＮｉ基合金、Ｃｏ基合金を用
いることが好ましい。また、溶射皮膜に限らず、特に施
工上、やむを得ずクラックが生じる金属系の溶接肉盛皮
膜であっても溶射皮膜と同様な封孔効果が見込める。The thermal spray coating is made of WC-Co, WC-NiCr, CrC-N, especially in consideration of wear resistance and corrosion resistance.
It is preferable to use a cermet-based material such as iCr, CoCrAlY, or CoNiCrAlY; a ceramic-based material such as alumina, silicon nitride, chromina, silica, or zirconia; an iron-based alloy such as stainless steel, a Ni-based alloy, or a Co-based alloy. In addition to the thermal spray coating, a sealing effect similar to that of the thermal spray coating can be expected even for a metal-based weld overlay coating in which cracks inevitably occur in construction.
【００１０】なお、溶射皮膜内部の空孔やクラックは、
皮膜の断面サンプルを作成の上で、光学顕微鏡、電子顕
微鏡などの観察からその大きさを測定することが出来
る。また、これらの溶射皮膜を、腐食性物質と粉塵を含
むガスを処理するファン、ブロワーの摩耗部位に適用す
ることによって、長期間の僅かずつの摩耗の進行に対し
ても封孔機能を維持し、腐食性ガス及び降温時に結露し
て溶射皮膜表面に付着する腐食性液体が溶射皮膜と母材
の境界へ侵入して溶射膜を剥離することを防止できる。[0010] The voids and cracks inside the thermal spray coating are
After preparing a cross-sectional sample of the film, its size can be measured by observation with an optical microscope, an electron microscope, or the like. In addition, by applying these thermal spray coatings to the wear parts of fans and blowers that treat gas containing corrosive substances and dust, the sealing function is maintained even if the wear progresses little by little over a long period of time. In addition, it is possible to prevent the corrosive gas and the corrosive liquid adhering to the surface of the sprayed coating by dew condensation at the time of temperature decrease from entering the boundary between the sprayed coating and the base material and peeling off the sprayed coating.
【００１１】[0011]
【実施例】（実施例１）次に、本発明を実施例により説
明する。φ２０ｍｍ厚さ５ｍｍの平板（ＳＳ４００）に
ＷＣ−１２Ｃｏを高速ガス溶射法により厚さ０．５ｍｍ
溶射したのち、水には不溶性である平均粒径０．１μｍ
の縮合反応架橋型シリコン樹脂を水に分散させた樹脂エ
マルジョンを刷毛により溶射皮膜表面に塗布し十分に常
温で放置、乾燥（縮合反応）させる。溶射皮膜内部の空
孔の径は約１μｍであった。これを、図１に示すよう
に、テフロン（登録商標）等適宜材料よりなる治具１内
には、溶射皮膜片面のみ露出するようにＯリング２、裏
蓋３等を介し溶射＆封孔サンプル４を封入している。そ
してこの治具１全体を硫酸５を入れた容器６内に、５日
間硫酸に浸漬させる硫酸浸漬試験を行った。試験後、溶
射サンプルの断面をＥＰＭＡによる成分分析（線分析）
を行った結果を図２に示す。同様に、比較例として一般
に用いられているエポキシ樹脂系を塗布した封孔処理
（従来技術）による溶射サンプル及び、封孔処理を行わ
ない溶射サンプルで前述の硫酸浸漬試験を行った。その
サンプル断面のEPMAによる成分分析（線分析）結果を図
３、図４に示す。(Embodiment 1) Next, the present invention will be described with reference to embodiments. WC-12Co is deposited on a flat plate (SS400) with a thickness of φ20 mm and a thickness of 5 mm by high-speed gas spraying to a thickness of 0.5 mm.
After spraying, average particle size 0.1μm insoluble in water
Condensation reaction A resin emulsion obtained by dispersing a crosslinked silicone resin in water is applied to the surface of the sprayed coating by a brush, and left at room temperature for a sufficient time to dry (condensation reaction). The diameter of the pores inside the thermal spray coating was about 1 μm. As shown in FIG. 1, a sprayed and sealed sample is placed in a jig 1 made of an appropriate material such as Teflon (registered trademark) via an O-ring 2 and a back cover 3 so that only one surface of the sprayed film is exposed. 4 is enclosed. Then, a sulfuric acid immersion test in which the entire jig 1 was immersed in sulfuric acid for 5 days in a container 6 containing sulfuric acid 5 was performed. After the test, the cross section of the sprayed sample is analyzed by EPMA for component analysis (line analysis).
FIG. 2 shows the results of the above. Similarly, the sulfuric acid immersion test described above was carried out on a sprayed sample by a sealing treatment (prior art) coated with an epoxy resin system and a sprayed sample not subjected to the sealing treatment, which are generally used as comparative examples. FIGS. 3 and 4 show the results of component analysis (linear analysis) of the sample cross section by EPMA.
【００１２】図２〜４ではＳ、 Ｆｅ、ＷまたはＣｏ、
を分析しているが、図４にあるように、封孔処理を行わ
ない場合は、Ｓ成分が皮膜の内部に侵入していることが
わかる。このＳは、後に母材に達し、ＷＣ−Ｃｏ溶射皮
膜との境界を腐食させ、最終的に皮膜の剥離を発生させ
る。一方、図２、図３のように、何らかの封孔処理を施
した溶射サンプルでは、ＳのＷＣ−Ｃｏ溶射皮膜内への
侵入は見られず、封孔が機能していることがわかる。2 to 4, S, Fe, W or Co,
As shown in FIG. 4, when the sealing treatment is not performed, it can be seen that the S component has penetrated into the inside of the film. This S reaches the base material later, corrodes the boundary with the WC-Co sprayed coating, and finally causes peeling of the coating. On the other hand, as shown in FIG. 2 and FIG. 3, in the thermal sprayed sample subjected to some sealing treatment, no penetration of S into the WC-Co thermal sprayed coating is observed, indicating that the sealing is functioning.
【００１３】次に、封孔処理を施したＷＣ−Ｃｏ溶射皮
膜が摩耗していくことを想定して、各種の封孔処理を施
した後に溶射皮膜表面を０．１ｍｍ研磨した溶射サンプ
ルで前述の硫酸浸漬試験を行った。本発明によるシリコ
ンエマルジョンを用いて封孔処理した溶射皮膜サンプル
断面の成分分析結果を図５に、エポキシ樹脂系を用いて
封孔処理した溶射皮膜サンプル断面の成分分析結果を図
６に示す。図５、図６を比較すると、本発明によるシリ
コンエマルジョンを用いた封孔処理では研磨しなかった
場合と同様にＳの溶射皮膜内部への侵入が見られないの
に対し、エポキシ樹脂系の封孔処理を施したものでは、
封孔処理がなかった場合と同様に溶射皮膜内部へのＳの
侵入が見られる。Next, assuming that the WC-Co sprayed coating having been subjected to the sealing treatment is going to be worn, a sprayed sample in which the surface of the sprayed coating was polished by 0.1 mm after performing various sealing treatments was used. Was subjected to a sulfuric acid immersion test. FIG. 5 shows the results of component analysis of a cross section of a sprayed coating sample that has been sealed using the silicone emulsion according to the present invention, and FIG. 6 shows the results of component analysis of a cross section of a sprayed coating sample that has been sealed using an epoxy resin system. 5 and 6, when the sealing treatment using the silicon emulsion according to the present invention does not show any penetration of S into the sprayed coating as in the case of not polishing, the sealing treatment using the epoxy resin sealant is not performed. In the one with hole treatment,
As in the case where the sealing treatment was not performed, penetration of S into the sprayed coating is observed.
【００１４】表１に、前述の硫酸浸漬試験結果から得ら
れたＳの溶射皮膜内部への侵入有無を一覧にした。Table 1 lists the presence or absence of intrusion of S into the sprayed coating obtained from the results of the sulfuric acid immersion test described above.
【表１】 シリコンエマルジョンによる封孔処理では、封孔機能維
持の限界を確認するために、研磨量を０．２５ｍｍにつ
いても試験、分析を実施したが、ここでも、Ｓの溶射皮
膜内への侵入は見られなかった。このように、溶射皮膜
の摩耗を想定した試験によって、本発明による封孔処理
方法では、従来の封孔処理方法に比べて格段に優れた封
孔機能を持っていることがわかる。[Table 1] In the sealing treatment using the silicon emulsion, in order to confirm the limit of maintaining the sealing function, the polishing amount was also tested and analyzed with respect to the polishing amount of 0.25 mm. Did not. As described above, the test assuming the abrasion of the thermal spray coating shows that the sealing method according to the present invention has a much better sealing function than the conventional sealing method.
【００１５】（実施例２）次に、実施例１に示した、本
発明による封孔処理方法を用いた溶射皮膜の機械部品へ
の適用事例として、本発明による溶射皮膜を摩耗部位に
適用したファンを図７に示す。 ここで、本発明による
溶射皮膜は、ファン本体７の主板８の表裏面において、
中央部側の部分と、翼板９の外側面に施している。図中
１０は側板である。このようなファンでは、用途によっ
て、例えばＳＯｘ、水分及び硬い粉塵を含有した２００
℃程度の高温のガスを処理する場合がある。ファン以前
の工程を停止させたり、ファンを停止させる際、ガス温
度が低下する時、ＳＯｘの一部が水分と合わさり、硫酸
が生成し、溶射膜表面に付着する。封孔処理が効いてい
ない場合は、この硫酸が溶射皮膜を通り抜け、溶射皮膜
と母材、または下盛の境界に達し、溶射皮膜を剥離さ
せ、結果として、ファンの重大な故障に至る。前述の硫
酸浸漬試験で示したように、本発明による封孔処理され
た溶射皮膜を施したファンは、溶射皮膜表面の摩耗があ
る程度進行しても、約２年以上に渡り封孔機能を維持
し、溶射皮膜と母材境界へのＳ侵入を阻止して腐食によ
る溶射皮膜の剥離を防止することが出来た。一方、実施
例１に示したエポキシ系樹脂を塗布した溶射皮膜を本発
明例と同一の場所に施したファンは約１年で溶射皮膜が
剥離した。(Example 2) Next, as an application example of a thermal spray coating using the sealing method according to the present invention shown in Example 1 to a mechanical part, the thermal spray coating according to the present invention was applied to a wear part. The fan is shown in FIG. Here, the thermal spray coating according to the present invention is formed on the front and back surfaces of the main plate 8 of the fan body 7.
It is applied to the central portion and the outer surface of the wing plate 9. In the figure, reference numeral 10 denotes a side plate. Depending on the application, such a fan contains, for example, SOx, moisture and hard dust.
In some cases, a gas having a high temperature of about ° C is processed. When the process before the fan is stopped or when the fan is stopped, when the gas temperature decreases, a part of SOx is combined with the moisture, sulfuric acid is generated, and adheres to the surface of the sprayed film. If the sealing treatment is not effective, the sulfuric acid passes through the thermal spray coating and reaches the boundary between the thermal spray coating and the base material or the underlay, and peels off the thermal spray coating, resulting in a serious failure of the fan. As shown in the above-mentioned sulfuric acid immersion test, the fan provided with the thermal spray coating subjected to the sealing treatment according to the present invention maintains the sealing function for about two years or more even if the wear of the thermal spray coating surface progresses to some extent. However, it was possible to prevent S from entering the boundary between the thermal spray coating and the base material, thereby preventing the thermal spray coating from peeling off due to corrosion. On the other hand, in the fan in which the thermal spray coating applied with the epoxy resin shown in Example 1 was applied to the same place as in the present invention, the thermal spray coating peeled off in about one year.
【００１６】[0016]
【発明の効果】本発明の封孔処理方法を導入すること
で、前述のファンに限らず、従来、不可能、または困難
とされてきた腐食環境における摩耗部品への溶射法の適
用が容易になり、従来の他の方法以上に耐摩耗性、耐食
性を長期間維持でき、機械部品の寿命を延長させ、修繕
コストを低減させることができる。By introducing the sealing method of the present invention, the spraying method can be easily applied not only to the above-mentioned fan but also to a worn part in a corrosive environment which has been considered impossible or difficult. Therefore, the wear resistance and corrosion resistance can be maintained for a long period of time as compared with other conventional methods, the service life of machine parts can be extended, and the repair cost can be reduced.
【図１】本発明の資料の硫酸浸漬試験を行う装置の説明
図。FIG. 1 is an explanatory view of an apparatus for performing a sulfuric acid immersion test on the material of the present invention.
【図２】本発明に係る溶射サンプルの断面をＥＰＭＡに
よる成分分析を行った結果を示す説明図。FIG. 2 is an explanatory diagram showing a result of performing a component analysis by EPMA on a cross section of a sprayed sample according to the present invention.
【図３】従来のエポキシ樹脂系を塗布し封孔処理による
溶射サンプルの断面をＥＰＭＡによる成分分析を行った
結果を示す説明図。FIG. 3 is an explanatory view showing a result of performing a component analysis by EPMA on a cross section of a sprayed sample obtained by applying a conventional epoxy resin system and performing a sealing process.
【図４】従来の封孔処理を施さない溶射サンプルの断面
をＥＰＭＡによる成分分析を行った結果を示す説明図。FIG. 4 is an explanatory view showing a result of conducting a component analysis by EPMA on a cross section of a conventional thermal sprayed sample not subjected to a sealing treatment.
【図５】本発明に係る溶射サンプル溶射表面研磨後の断
面をＥＰＭＡによる成分分析を行った結果を示す説明
図。FIG. 5 is an explanatory diagram showing a result of performing a component analysis by EPMA on a cross section of the thermal sprayed sample according to the present invention after the thermal sprayed surface is polished.
【図６】従来のエポキシ樹脂で封孔処理を施した溶射サ
ンプル溶射表面研磨後の断面をＥＰＭＡによる成分分析
を行った結果を示す説明図。FIG. 6 is an explanatory view showing a result of performing a component analysis by EPMA on a cross section after spraying a sprayed surface of a sprayed sample which has been subjected to a sealing treatment with a conventional epoxy resin.
【図７】本発明及び従来技術の封孔処理された皮膜をフ
ァンへ適用した例の一部切り欠き斜視図。FIG. 7 is a partially cutaway perspective view of an example in which a film subjected to a sealing treatment according to the present invention and the prior art is applied to a fan.
１ 治具 ２ Ｏリング ３ 裏蓋 ４ 溶射＆封孔サンプル ５ 硫酸 ６ 容器 ７ ファン本体 ８ 主板 ９ 翼板 DESCRIPTION OF SYMBOLS 1 Jig 2 O-ring 3 Back cover 4 Thermal spray & sealing sample 5 Sulfuric acid 6 Container 7 Fan body 8 Main plate 9 Wing plate
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐藤 信治 愛知県東海市東海町５−３ 新日本製鐵株 式会社名古屋製鐵所内 (72)発明者 高澤 豊 愛知県東海市東海町５−３ 新日本製鐵株 式会社名古屋製鐵所内 Ｆターム(参考） 3H033 AA04 BB02 BB06 CC01 DD25 DD26 EE11 4K031 AA02 AB02 AB08 AB09 CB08 CB09 CB11 CB14 CB22 CB26 CB27 CB42 CB43 CB45 CB46 CB48 DA01 FA09 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Shinji Sato 5-3 Tokai-cho, Tokai City, Aichi Prefecture Nippon Steel Corporation Nagoya Works (72) Inventor Yutaka Takazawa 5-3 Tokai-cho, Tokai City, Aichi Prefecture F-term in Nippon Steel Corporation Nagoya Works (reference) 3H033 AA04 BB02 BB06 CC01 DD25 DD26 EE11 4K031 AA02 AB02 AB08 AB09 CB08 CB09 CB11 CB14 CB22 CB26 CB27 CB42 CB43 CB45 CB46 CB48 DA01 FA09
Claims (6)
樹脂を溶媒中に分散させた樹脂エマルジョンを溶射皮膜
表面に塗布、含浸させた後、前記皮膜内部の空孔を前記
樹脂成分で埋めることを特徴とする溶射皮膜の封孔処理
方法。1. After spraying and impregnating a resin emulsion in which a resin having a particle diameter smaller than the pores inside the sprayed coating is dispersed in a solvent, onto the surface of the sprayed coating, the pores inside the coating are filled with the resin component. A method for sealing a thermal sprayed coating characterized by filling.
脂エマルジョンであることを特徴とする請求項１記載の
溶射皮膜の封孔処理方法。2. The method according to claim 1, wherein the resin emulsion is a resin emulsion having an average particle size of 0.01 to 10 μm.
コン樹脂、ポリエステル、ポリカーボネート、セルロー
スアセテート、酢酸ビニル、エチレン-酢酸ビニル共重
合体、フェノール樹脂、テルペンフェノール樹脂、ポリ
イミド、ブチラール樹脂、ユリア樹脂、メラニン樹脂、
エポキシ樹脂、アルキド樹脂、ウレタン樹脂、フラン樹
脂、ポリエチレン、ポリプロピレン、ポリブデン、ポリ
メチルペンテン、ポリアセタール、ポリエチレンテフタ
レート、ナイロン、フッ素樹脂、ポリ塩化ビニル、ポリ
塩化ビニルデン、ポリスチレン、ＡＢＳ樹脂、アクリル
樹脂、フェノキシ樹脂、ポリフェニレンオキサイド、ポ
リスルホン、アイオノマー、スチレンブタジエンのいず
れか１種または２種以上を混合した樹脂からなることを
特徴とする請求項１または２記載の溶射皮膜の封孔処理
方法。3. The resin constituting the resin emulsion is silicone resin, polyester, polycarbonate, cellulose acetate, vinyl acetate, ethylene-vinyl acetate copolymer, phenol resin, terpene phenol resin, polyimide, butyral resin, urea resin, melanin. resin,
Epoxy resin, alkyd resin, urethane resin, furan resin, polyethylene, polypropylene, polybutene, polymethylpentene, polyacetal, polyethylene terephthalate, nylon, fluororesin, polyvinyl chloride, polyvinyl chloride, polystyrene, ABS resin, acrylic resin, phenoxy The method for sealing a thermal sprayed coating according to claim 1, wherein the thermal spray coating is made of a resin, one or a mixture of two or more of a resin, polyphenylene oxide, polysulfone, ionomer, and styrene butadiene.
Ｃ−ＮｉＣｒ，ＣｒＣ−ＮｉＣｒ，ＣｏＣｒＡｌＹ、Ｃ
ｏＮｉＣｒＡｌＹ、アルミナ、窒化珪素、サイアロン、
クロミア、シリカ、ジルコニア、ステンレスを含む鉄基
合金、Ｎｉ基合金、Ｃｏ基合金のいずれかからなること
を特徴とする請求項１〜３のいずれか１項に記載の溶射
皮膜の封孔処理方法。4. A thermal spray coating for sealing is made of WC-Co, W
C-NiCr, CrC-NiCr, CoCrAlY, C
oNiCrAlY, alumina, silicon nitride, sialon,
The method for sealing a thermal sprayed coating according to any one of claims 1 to 3, wherein the thermal spray coating is made of any one of an iron-based alloy including chromia, silica, zirconia, and stainless steel, a Ni-based alloy, and a Co-based alloy. .
により封孔処理したことを特徴とする溶射皮膜。5. A thermal sprayed coating which has been subjected to a sealing treatment by the method according to any one of claims 1 to 4.
を、表面の一部または全部に施したファンまたはブロワ
ー。6. A fan or blower in which a part or the entire surface of the thermal sprayed coating according to claim 5 is applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000280583A JP2002088462A (en) | 2000-09-14 | 2000-09-14 | Method for sealing treatment, sealing-treated sprayed deposit, and fan or blower each having the deposit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000280583A JP2002088462A (en) | 2000-09-14 | 2000-09-14 | Method for sealing treatment, sealing-treated sprayed deposit, and fan or blower each having the deposit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002088462A true JP2002088462A (en) | 2002-03-27 |
Family
ID=18765391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000280583A Pending JP2002088462A (en) | 2000-09-14 | 2000-09-14 | Method for sealing treatment, sealing-treated sprayed deposit, and fan or blower each having the deposit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002088462A (en) |
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