JP2003268527A - Sealing method, sealing-treated spray deposit, and fan or blower each having the deposit - Google Patents
Sealing method, sealing-treated spray deposit, and fan or blower each having the depositInfo
- Publication number
- JP2003268527A JP2003268527A JP2002074767A JP2002074767A JP2003268527A JP 2003268527 A JP2003268527 A JP 2003268527A JP 2002074767 A JP2002074767 A JP 2002074767A JP 2002074767 A JP2002074767 A JP 2002074767A JP 2003268527 A JP2003268527 A JP 2003268527A
- Authority
- JP
- Japan
- Prior art keywords
- sealing
- thermal spray
- spray coating
- deposit
- inorganic polymer
- 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.)
- Granted
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Coating By Spraying Or Casting (AREA)
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。The present invention relates to a thermal spraying method,
The present invention relates to a method for sealing a cermet, a ceramics or a metal coating formed on an object with a resin or the like for fine pores on the coating surface and inside the coating, and a thermal spray coating subjected to the sealing treatment. The present invention plays a role in improving the rust prevention, wear resistance, and peeling resistance of the coating of the object to be sprayed.
【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２−５６
４２７号公報）や硬化方法（例えば特公平２−５６４２
７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 method to coat the surface of a base material such as metal with cermet, ceramics or alloy having excellent wear resistance, heat resistance and corrosion resistance. A thermal spraying method in which cermet or ceramic powder, alloy metal wire, or the like is sprayed through a flame is known as a method often used for these coatings. Usually, the as-sprayed coating has pores with a size of several μm or less in a volume ratio of about 2 to 10%, and microcracks may be formed by connecting these pores. is there. These pores and microcracks are usually opened from the surface of the substrate to the surface of the thermal spray coating, and a corrosive liquid or gas enters these microcracks, so it is suitable for environments requiring corrosion resistance. Although the thermal spraying method cannot be applied, a sealing treatment for sealing these pores and microcracks is generally performed.
Various inorganic and organic sealing agents are applied to this sealing method, and the type of sealing agent (for example, JP-A-5-279833).
Japanese Patent, Japanese Patent No. 2729935, Japanese Patent Publication No. 2-56
No. 427) and a curing method (for example, Japanese Patent Publication No. 2-5642).
Many of the inventions disclosed in Japanese Patent Laid-Open No. H7-7 and Japanese Patent Laid-Open No. H5-106014) are disclosed.
【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。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。Conventionally, these pores,
For example, ceramic sprayed coatings are used to block microcracks. Organic coating agents such as phenolic resin, silicone resin and epoxy resin, and inorganic agents such as water glass and ethyl silicate are used as sealing agents to impregnate the coatings. A sealing treatment for curing by curing has been generally performed. However, in these sealing treatment methods, most of the sealing agent only adheres to the surface of the thermal spray coating and cannot be impregnated to a certain depth inside the surface layer. As the wear progressed, it lost its sealing function as soon as possible. These sealing agents are sometimes impregnated using vacuum or pressure, but even with these methods, the viscosity and surface tension of the sealing agent, the organic substance dispersed in the sealing agent, Due to the large size of the inorganic molecule, it has been difficult to permeate the pore-sealing agent into the inside, that is, to maintain the pore-sealing function against abrasion. In particular, in the thermal spraying of cermet materials and ceramic materials, in the high-speed gas spraying method and the plasma spraying method, which are often used due to the denseness of the sprayed coating, the pores and microcracks are extremely small, so the sealing agent is impregnated. It is difficult to maintain the above-mentioned sealing function because it is difficult. Furthermore, fans, blower blades, and main plates that contain corrosive substances such as SOx (produces sulfuric acid at low temperatures) and hard dust in the gas are typical mechanical components that face this problem. There was a strong demand for improvements in load and repair costs. In the present invention, conventionally, even in a corrosion and wear environment where it has been difficult to maintain the sealing function, abrasion resistance, a sealing treatment method capable of maintaining corrosion resistance for a long period of time, and a sealed sprayed coating and it. The purpose is to provide the fan or blower provided.
【０００４】[0004]
【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無機高
分子を溶媒中に分散させた、Ｂ，Ｎ，Ｐ，Ｃｌ，Ａｌ，
Ｃａ，Ｇｅの１種または２種以上の元素を含有する無機
高分子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、無機高分子の平均粒径が０．０１〜１０
μｍの無機高分子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）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）又は
（２）記載の溶射皮膜封孔処理方法である。
（４）また、（１）〜（３）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。
（５）そして、（４）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。In order to solve these problems, the gist of the present invention is to: (1) Disperse an inorganic polymer having a particle size smaller than the pores inside the thermal spray coating in a solvent. , B, N, P, Cl, Al,
A method for sealing a sprayed coating in which an inorganic polymer emulsion containing one or more elements of Ca and Ge is applied and impregnated on the surface of the sprayed coating, and then the pores inside the coating are filled with the resin component. Is. (2) The average particle size of the inorganic polymer is 0.01 to 10
It is the spray coating sealing method of (1) with a μm inorganic polymer emulsion. (3) Furthermore, the thermal spray coating for sealing is WC-C.
o, WC-NiCr, CrC-NiCr, CoCrAl
(1) or (2) described in (1) or (2), which comprises an iron-based alloy such as Y, CoNiCrAlY, alumina, silicon nitride, chromina, silica, zirconia, and stainless steel, a Ni-based alloy, and a Co-based alloy. . (4) Further, the thermal spray coating is subjected to a sealing treatment by the method described in any one of (1) to (3). (5) And the fan or blower which applied the thermal spray coating of (4) to a part or all of the surface.
【０００５】[0005]
【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
法では無機高分子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 inherent in the thermal spray coating are extremely small, especially in high-speed gas spraying, and their proportion is as small as a few percent or less. In order to penetrate, the size of the pore-sealing component molecule must be sufficiently smaller than the size of the pores and microcracks, in addition to the viscosity and surface tension of the pore-sealing agent being small. In the method according to the present invention, the size of the resin of the inorganic polymer emulsion is made smaller than the pores and the microcracks to enable the permeation and sealing after curing.
【０００６】Ｂ，Ｎ，Ｐ,Cl，Al，Ca，Geの1種または2
種以上の元素を含有する無機高分子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、無機高分子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。One or two of B, N, P, Cl, Al, Ca, Ge
Water, alcohols, oils, etc. can be used as a solvent when preparing an inorganic polymer emulsion containing one or more elements, but the selection of a dispersant that stabilizes the dispersion of the inorganic polymer is comparative. Water is preferred because it is easy to use.
【０００７】無機高分子エマルジョンとしては、無機性
ゴム状弾性体があり、Ｂ，Ｎ，Ｐ，Ｃｌ，Ａｌ，Ｃａ，
Ｇｅを含有する無機高分子エマルジョンとしては、塩化
ホスホニトリルの重合体（たとえば（ＰＮＣｌ２）ｎ・
ＰＣｌ５で表せる（ｎ＝３〜２１）），フッ化ホスホニ
トリルの重合体（たとえば（ＰＮＦ２）ｎで表せる）等
がある。As the inorganic polymer emulsion, there is an inorganic rubber-like elastic body, and B, N, P, Cl, Al, Ca,
Examples of the Ge-containing inorganic polymer emulsion include polymers of phosphonitrile chloride (for example, (PNCl2) n.
PCl5 (n = 3 to 21)), fluorinated phosphonitrile polymer (eg (PNF2) n), and the like.
【０００８】このような無機高分子エマルジョンは、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、上記の無機高分子のいずれか１種または２種
以上を混合した無機高分子を用いることが好ましい。Such an inorganic polymer emulsion is prepared by mixing one or more of the above-mentioned inorganic polymers from the viewpoint of heat resistance, chemical resistance, etc., depending on the environment requiring sealing. It is preferable to use the above-mentioned inorganic polymer.
【０００９】溶射皮膜に上記の無機高分子エマルジョン
を塗布、含浸させた後、無機高分子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無機高分子を含浸させると共に
強固な無機高分子強度を発現させることが可能となっ
た。After coating and impregnating the above-mentioned inorganic polymer emulsion on the thermal spray coating, the cross-linking reaction of the inorganic polymer fills the pores inside the coating with the resin component. By this mechanism, it became possible to impregnate the inside of the thermal spray coating with the inorganic polymer and to develop a strong strength of the inorganic polymer.
【００１０】無機高分子粒径は空孔、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１０μｍ以下とすること
が好ましい。Since the inorganic polymer particle size is required to be sufficiently smaller than the pores and microcracks, the actual pores,
While the size of the microcracks is on the order of μm, the average particle size is preferably 0.01 μm to 10 μm or less.
【００１１】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-NiCr，CoCrAlY、CoNiCr
AlY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 sprayed coating is composed of WC-Co, WC-NiCr, CrC-NiCr, CoCrAlY, CoNiCr in consideration of wear resistance and corrosion resistance.
Cermet materials such as AlY, ceramic materials such as alumina, silicon nitride, chromina, silica, zirconia, iron-based alloys such as stainless steel, Ni-based alloys, Co
It is preferable to use a base alloy. Further, not only the thermal spray coating, but also a metal-based weld overlay film, which is unavoidably cracked in construction, can be expected to have the same sealing effect as the thermal spray coating.
【００１２】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。The holes and cracks inside the thermal spray coating are
The size of the film can be measured by observing with an optical microscope, an electron microscope, etc., after creating a cross-section sample of the film. In addition, by applying these thermal spray coatings to the wear parts of fans and blowers that process gas containing corrosive substances and dust, the sealing function is maintained even when wear progresses little by little over a long period of time. It is possible to prevent the corrosive gas and the corrosive liquid that condenses at the time of temperature decrease and adheres to the surface of the thermal spray coating from invading the boundary between the thermal spray coating and the base material and peeling off the thermal spray coating.
【００１３】[0013]
【実施例１】次に、本発明を実施例により説明する。φ
２０mm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の塩化ホスホニトリルの重合体か
らなる無機高分子を水に分散させた無機高分子エマルジ
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。[Embodiment 1] Next, the present invention will be described with reference to embodiments. φ
WC-12Co was sprayed on a flat plate (SS400) with a thickness of 20 mm and a thickness of 5 mm by a high-speed gas spraying method to a thickness of 0.5 mm, and then an inorganic high-molecular-weight polymer of phosphonitrile chloride with an average particle size of 0.1 μm was insoluble in water. An inorganic polymer emulsion in which molecules are dispersed in water is applied to the surface of the thermal spray coating with a brush, and sufficiently left at room temperature to dry (condensation reaction). The diameter of the pores inside the thermal spray coating was about 1 μm. As shown in FIG. 1, the sample is sprayed and sealed with a O-ring 2, a back cover 3, etc. so that only one surface of the sprayed coating is exposed in a jig 1 made of an appropriate material such as Teflon (registered trademark). 4 is enclosed. Then, a sulfuric acid immersion test was performed in which the entire jig 1 was immersed in sulfuric acid for 5 days in a container 6 containing sulfuric acid 5. After the test, the cross-section of the sprayed sample was subjected to component analysis (line analysis) by EPMA, and the results are shown in FIG.
【００１４】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EP
MAによる成分分析（線分析）結果を図３、図４に示す。
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。Similarly, as a comparative example, the above-mentioned sulfuric acid immersion test was carried out on a thermal spraying sample prepared by applying a sealing method (prior art) coated with an epoxy resin system generally used and a spraying sample not subjected to the sealing processing. EP of the sample cross section
The results of the component analysis (line analysis) by MA are shown in FIGS.
2 to 4 analyze S, Fe, W or Co,
As shown in FIG. 4, it is understood that the S component penetrates into the inside of the film when the sealing treatment is not performed. This S is
Later it reaches the base metal and corrodes the boundary with the WC-Co spray coating,
Finally, peeling of the film occurs. On the other hand, as shown in FIG. 2 and FIG. 3, in the thermal spray sample that has been subjected to some kind of sealing treatment,
No infiltration of S into the WC-Co sprayed coating was observed, indicating that the sealing functioned.
【００１５】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。本発明による無機高
分子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、本発明による無
機高分子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 that has been subjected to the pore-sealing treatment will be worn away, the spray-coated sample obtained by polishing the surface of the spray-coated coating by 0.1 mm after performing various pore-sealing treatments will be described above. The sulfuric acid immersion test was performed. FIG. 5 shows the results of the component analysis of the cross section of the thermal spray coating sample subjected to the pore-sealing treatment using the inorganic polymer emulsion according to the present invention, and FIG. 6 shows the results of the component analysis of the cross-section of the thermal spray coating film subjected to the pore sealing treatment using the epoxy resin system. . Comparing FIG. 5 and FIG. 6, in the pore-sealing treatment using the inorganic polymer emulsion according to the present invention, no penetration of S into the thermal spray coating is observed as in the case where no polishing is performed, whereas the epoxy resin-based resin is used. In the case where the sealing treatment is performed, S intrusion into the thermal spray coating is seen as in the case where the sealing treatment is not performed.
【００１６】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 whether or not S obtained from the results of the sulfuric acid immersion test described above entered the thermal spray coating.
【表１】
無機高分子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 with an inorganic polymer emulsion, in order to confirm the limit of the sealing function maintenance, we also tested and analyzed the polishing amount of 0.25 mm, but again, S infiltration into the thermal spray coating was not observed. I couldn't do it. As described above, the test assuming wear of the thermal spray coating shows that the sealing treatment method according to the present invention has a significantly superior sealing function as compared with the conventional sealing treatment method.
【００１７】[0017]
【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SO
x、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、 S
Ox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。Second Embodiment Next, as an application example of the thermal spray coating using the sealing treatment method according to the present invention to mechanical parts shown in the first embodiment, a fan in which the thermal spray coating according to the present invention is applied to a worn portion is illustrated. 7 shows. Here, the thermal spray coating according to the present invention is applied to the central portion of the main plate 8 of the fan body 7 and the outer surface of the blade 9. In the figure, 10 is a side plate. In such a fan, depending on the application, for example, SO
In some cases, a high temperature gas of about 200 ° C containing x, moisture and hard dust is treated. When the gas temperature drops when stopping the process before the fan or stopping the fan, S
Part of Ox is mixed with water to generate sulfuric acid, which adheres to the surface of the sprayed coating. If the sealing treatment is not effective, this sulfuric acid passes through the thermal spray coating and reaches the boundary between the thermal spray coating and the base material or the undercoat, causing the thermal spray coating to peel off, resulting in a serious failure of the fan. As shown in the sulfuric acid immersion test described above, the fan provided with the thermal spray coating with the sealing treatment according to the present invention is about 2 even if the abrasion of the surface of the thermal spray coating progresses to some extent.
It has been possible to maintain the sealing function for more than a year and prevent S from penetrating into the boundary between the thermal spray coating and the base material to prevent the thermal spray coating from peeling due to corrosion. On the other hand, in the fan in which the epoxy resin-coated thermal spray coating shown in Example 1 was applied at the same location as the present invention example, the thermal spray coating peeled off in about one year.
【００１８】[0018]
【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 treatment method of the present invention, the thermal 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 heretofore been impossible or difficult. Therefore, it is possible to maintain the wear resistance and the corrosion resistance for a long period of time as compared with other conventional methods, prolong the life of mechanical parts, and reduce the repair cost.
【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 diagram of an apparatus for performing a sulfuric acid immersion test of the material of the present invention.
【図２】本発明に係る溶射サンプルの断面について、Ｓ
侵入分析結果を示す説明図。FIG. 2 is a sectional view of a thermal sprayed sample according to the present invention, S
Explanatory drawing which shows an intrusion analysis result.
【図３】従来の溶射サンプルの断面について、Ｓ侵入分
析結果を示す説明図。FIG. 3 is an explanatory diagram showing S intrusion analysis results for a cross section of a conventional thermal spray sample.
【図４】従来の封孔処理を施さない溶射サンプルの断面
について、Ｓ侵入分析結果を示す説明図。FIG. 4 is an explanatory view showing S intrusion analysis results for a cross section of a thermal spray sample that has not been subjected to a conventional sealing treatment.
【図５】本発明に係る溶射サンプルを溶射表面０．１ｍ
ｍ研磨後のＳ侵入分析結果を示す説明図。FIG. 5 shows a thermal sprayed sample according to the present invention having a thermal sprayed surface of 0.1 m.
Explanatory drawing which shows the S intrusion analysis result after m polishing.
【図６】従来のエポキシ樹脂で封孔処理を施した溶射サ
ンプルを溶射表面０．１ｍｍ研磨後のＳ侵入分析結果を
示す説明図。FIG. 6 is an explanatory diagram showing an S intrusion analysis result after polishing a sprayed surface of 0.1 mm for a sprayed sample subjected to 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説明図。FIG. 7 is a partially cutaway explanatory view of an example in which the sealing-treated coating of the present invention and the prior art is applied to a fan.
１ 治具 ２ Ｏリング ３ 裏蓋 ４ 容赦＆封孔サンプル ５ 硫酸 ６ 容器 ７ ファン本体 ８ 主板 ９ 翼板 １０ 側板 1 jig 2 O-ring 3 case back 4 Forgiveness & Sealing Sample 5 Sulfuric acid 6 containers 7 Fan body 8 main plate 9 wings 10 side 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） 3H022 AA02 BA04 CA55 DA13 DA14 3H033 AA02 BB02 BB06 CC01 DD25 DD26 EE11 4K031 AA02 AA08 AB08 AB09 AB11 CB14 CB21 CB22 CB26 CB27 CB32 CB42 CB43 CB45 CB46 CB48 DA01 FA08 FA09 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Shinji Sato 5-3 Tokai-cho, Tokai-shi, Aichi Nippon Steel Corporation Ceremony Company Nagoya Steel Works (72) Inventor Yutaka Takazawa 5-3 Tokai-cho, Tokai-shi, Aichi Nippon Steel Corporation Ceremony Company Nagoya Steel Works F term (reference) 3H022 AA02 BA04 CA55 DA13 DA14 3H033 AA02 BB02 BB06 CC01 DD25 DD26 EE11 4K031 AA02 AA08 AB08 AB09 AB11 CB14 CB21 CB22 CB26 CB27 CB32 CB42 CB43 CB45 CB46 CB48 DA01 FA08 FA09
Claims (5)
無機高分子を溶媒中に分散させた、Ｂ，Ｎ，Ｐ，Ｃｌ，
Ａｌ，Ｃａ，Ｇｅの１種または２種以上の元素を含有す
る無機高分子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無機高分子成分で
埋めることを特徴とする溶射皮膜の封孔処理方法。1. An inorganic polymer having a particle size smaller than the pores inside the thermal spray coating is dispersed in a solvent, and B, N, P, Cl,
The inorganic polymer emulsion containing one or more elements of Al, Ca and Ge is applied to the surface of the thermal spray coating and impregnated, and then the pores inside the coating are filled with the inorganic polymer component. A method for sealing a sprayed coating.
ｍの無機高分子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 average particle size of the inorganic polymer is 0.01 to 10 μm.
The method for sealing a thermal spray coating according to claim 1, wherein the method is an inorganic polymer emulsion of m.
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又は２記載の溶射皮膜の封孔処理
方法。3. A sprayed coating for sealing treatment is WC-Co, W
C-NiCr, CrC-NiCr, CoCrAlY, C
oNiCrAlY, alumina, silicon nitride, sialon,
The sealing treatment method for a thermal spray coating according to claim 1 or 2, which is made of any one of an iron-based alloy containing chromia, silica, zirconia, and stainless, 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。4. A thermal spray coating, which has been subjected to a sealing treatment by the method according to any one of claims 1 to 3.
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。5. A fan or blower in which the sealing sprayed coating according to claim 4 is applied to a part or all of the surface.
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| JP2002074767A JP3925849B2 (en) | 2002-03-18 | 2002-03-18 | Sealing treatment method, sealed sprayed coating and fan or blower having the coating |
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|---|---|---|---|
| JP2002074767A JP3925849B2 (en) | 2002-03-18 | 2002-03-18 | Sealing treatment method, sealed sprayed coating and fan or blower having the coating |
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| Publication Number | Publication Date |
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| JP3925849B2 JP3925849B2 (en) | 2007-06-06 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008087830A1 (en) * | 2007-01-15 | 2008-07-24 | Mitsubishi Heavy Industries, Ltd. | Impeller for gas compressor and gas compressor with the same |
| JP2014031554A (en) * | 2012-08-03 | 2014-02-20 | Tocalo Co Ltd | Radiation shielding coating member |
| CN103692144A (en) * | 2013-12-31 | 2014-04-02 | 三一重工股份有限公司 | Method for repairing components by aid of mixtures of tungsten carbide particles and resin |
| CN106756714A (en) * | 2016-11-30 | 2017-05-31 | 佛山市高明区诚睿基科技有限公司 | A kind of preparation method of the stainless steel material with surface insulation layer |
-
2002
- 2002-03-18 JP JP2002074767A patent/JP3925849B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008087830A1 (en) * | 2007-01-15 | 2008-07-24 | Mitsubishi Heavy Industries, Ltd. | Impeller for gas compressor and gas compressor with the same |
| JP2014031554A (en) * | 2012-08-03 | 2014-02-20 | Tocalo Co Ltd | Radiation shielding coating member |
| CN103692144A (en) * | 2013-12-31 | 2014-04-02 | 三一重工股份有限公司 | Method for repairing components by aid of mixtures of tungsten carbide particles and resin |
| CN106756714A (en) * | 2016-11-30 | 2017-05-31 | 佛山市高明区诚睿基科技有限公司 | A kind of preparation method of the stainless steel material with surface insulation layer |
| CN106756714B (en) * | 2016-11-30 | 2018-12-28 | 佛山市高明区诚睿基科技有限公司 | A kind of preparation method of the stainless steel material with surface insulation layer |
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| Publication number | Publication date |
|---|---|
| JP3925849B2 (en) | 2007-06-06 |
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