JP2001262312A - Corrosion resistant and wear resistant protector - Google Patents
Corrosion resistant and wear resistant protectorInfo
- Publication number
- JP2001262312A JP2001262312A JP2000071491A JP2000071491A JP2001262312A JP 2001262312 A JP2001262312 A JP 2001262312A JP 2000071491 A JP2000071491 A JP 2000071491A JP 2000071491 A JP2000071491 A JP 2000071491A JP 2001262312 A JP2001262312 A JP 2001262312A
- Authority
- JP
- Japan
- Prior art keywords
- protector
- resistant
- corrosion
- porous
- heat transfer
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
- F28F19/06—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of metal
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、灰分を含んだ高温
・高速気流によって摩耗損傷するのを防ぐため、石炭焚
きボイラ伝熱管等に取付けられる耐食・耐摩耗性プロテ
クタに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrosion-resistant and abrasion-resistant protector mounted on a coal-fired boiler heat transfer tube or the like in order to prevent abrasion damage due to a high-temperature and high-speed airflow containing ash.
【０００２】[0002]
【従来の技術】石炭焚きボイラでは、伝熱管表面に堆積
付着した灰分を煤吹き装置により除去するに際し、灰分
を巻き込んだ高速気流によって激しい摩耗損傷を伝熱管
に生ずる。この摩耗損傷を防止するため、石炭焚きボイ
ラ伝熱管にはプロテクタが取付けられるが、従来のプロ
テクタは高温耐腐食を有するステンレス鋼材やインコネ
ル６２５合金などのＮｉ基合金で製作され、伝熱管表面
に金具等を使用して取付けられるものとなっている。2. Description of the Related Art In a coal-fired boiler, when ash deposited and attached on the surface of a heat transfer tube is removed by a soot blowing device, a high-speed airflow containing the ash causes severe wear damage to the heat transfer tube. In order to prevent this abrasion damage, a protector is attached to the heat transfer tube of the coal-fired boiler. The conventional protector is made of a stainless steel material having high temperature corrosion resistance or a Ni-based alloy such as Inconel 625 alloy, and a metal fitting is provided on the surface of the heat transfer tube. And so on.
【０００３】このように、プロテクタ自体は金属材料で
製作されているため高温にさらされると硬度が著しく低
下（軟化）すると共に、灰分中にはさまざまな高温腐食
性成分が含まれるため、高温腐食と摩耗が相乗しプロテ
クタに激しい損傷を生じる場合がある。As described above, since the protector itself is made of a metal material, its hardness is significantly reduced (softened) when exposed to high temperatures, and various high-temperature corrosive components are contained in the ash. And wear may result in severe damage to the protector.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、石炭焚きボ
イラの伝熱管等に用いるための高温耐食性に優れ、伝熱
管表面に取付けが容易な耐食・耐摩耗性プロテクタを提
供することを課題としている。SUMMARY OF THE INVENTION It is an object of the present invention to provide a corrosion-resistant and wear-resistant protector which is excellent in high-temperature corrosion resistance for use in a heat transfer tube of a coal-fired boiler and can be easily mounted on the surface of the heat transfer tube. I have.
【０００５】[0005]
【課題を解決するための手段】前記課題を解決するた
め、本発明は、成形された多孔質金属板の外表面に耐食
・耐摩耗性に優れたセラミックスを溶射し、前記多孔質
金属板と前記溶射セラミックスの境界に前記多孔質金属
板と前記溶射セラミックスの複合層を形成させた耐食・
耐摩耗性プロテクタを提供する。Means for Solving the Problems To solve the above-mentioned problems, the present invention provides a method of spraying ceramics having excellent corrosion and wear resistance on the outer surface of a molded porous metal plate, and Corrosion resistance in which a composite layer of the porous metal plate and the sprayed ceramics is formed at the boundary of the sprayed ceramics
Provide a wear-resistant protector.
【０００６】本発明によるプロテクタを構成する多孔質
金属板としては多孔質Ｎｉ板を採用し、また、セラミッ
クスとしてＺｒＯ2 −３〜１０ｗｔ％Ｙ2 Ｏ3 を採用し
てよい。或いは、多孔質金属板として多孔質Ｎｉ−Ｃｒ
板を採用し、セラミックスとしてＡｌ2 Ｏ3 を採用して
よい。The porous metal plate constituting the protector according to the present invention may be a porous Ni plate, and the ceramic may be ZrO 2 -3 to 10 wt% Y 2 O 3 . Alternatively, porous Ni-Cr is used as the porous metal plate.
A plate may be employed, and Al 2 O 3 may be employed as the ceramic.
【０００７】また、本発明によるプロテクタにおいて採
用する多孔質金属板は薄いとプロテクタとしての効果が
低く、厚いと伝熱管等への取付けが難しいという問題が
あり、その厚さは３〜１０mmとするのが好ましい。ま
た、溶射セラミックスは、プロテクタとしては厚い方が
好ましいが厚くすると多孔質金属板との境界より剥離を
起こす可能性があり、０．３ｍｍ以上、実用上好ましく
は０．５mm以上とするのがよい。Further, if the porous metal plate used in the protector according to the present invention is thin, the effect as a protector is low, and if it is thick, it is difficult to mount it on a heat transfer tube or the like, and the thickness is 3 to 10 mm. Is preferred. In addition, sprayed ceramics are preferably thicker as a protector, but when thickened, there is a possibility that peeling may occur from the boundary with the porous metal plate, and the thickness is preferably 0.3 mm or more, and practically preferably 0.5 mm or more. .
【０００８】本発明によるプロテクタを石炭焚きボイラ
伝熱管に適用する場合には、プロテクタを構成する多孔
質金属板を、その伝熱管の半分を覆う形に成形したもの
を採用し、得られた耐食・耐摩耗性プロテクタを取付け
具によってその伝熱管の外表面の半分を覆って取付ける
ようにするとよい。以上説明した本発明のプロテクタ
は、耐熱及び耐食性が高く、石炭焚きボイラ伝熱管のプ
ロテクタとして使用すると長期間に亘って伝熱管を高温
下での摩耗損傷から防止することができる。When the protector according to the present invention is applied to a heat transfer tube for a coal-fired boiler, a porous metal plate constituting the protector is formed so as to cover half of the heat transfer tube, and the obtained corrosion resistance is adopted. The wear-resistant protector may be mounted so as to cover half of the outer surface of the heat transfer tube by the mounting tool. The protector of the present invention described above has high heat resistance and corrosion resistance, and when used as a protector for a coal-fired boiler heat transfer tube, can protect the heat transfer tube from abrasion damage under high temperature for a long period of time.
【０００９】[0009]
【発明の実施の形態】以下、本発明による耐食・耐摩耗
性プロテクタを図１〜図４に示した実施の形態に基づい
て具体的に説明する。なお、以下の実施形態は、本発明
による耐食・耐摩耗性プロテクタを石炭焚きボイラの伝
熱管に適用したものである。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a corrosion-resistant and abrasion-resistant protector according to the present invention. In the following embodiment, the corrosion-resistant and wear-resistant protector according to the present invention is applied to a heat transfer tube of a coal-fired boiler.
【００１０】（第１実施形態）まず、図１〜図３に示し
た第１実施形態による耐食・耐摩耗性プロテクタについ
て説明する。本発明の第１実施形態によるプロテクタの
断面を示す図１において、１は多孔質Ｎｉ（ニッケル）
板（商品名：セルメット＃２）を示し、厚さ５．０mmの
ものを使用し、保護すべき伝熱管の外表面上に取付けら
れるように中空円筒を半割れ状にした形に予め成形す
る。(First Embodiment) First, a description will be given of a corrosion-resistant and wear-resistant protector according to a first embodiment shown in FIGS. In FIG. 1 showing a cross section of a protector according to a first embodiment of the present invention, reference numeral 1 denotes porous Ni (nickel).
A plate (trade name: Celmet # 2), having a thickness of 5.0 mm, is preformed into a half-cut hollow cylinder so that it can be mounted on the outer surface of the heat transfer tube to be protected. .
【００１１】このように成形された多孔質Ｎｉ板１の外
表面にＺｒＯ2 −８ｗｔ％Ｙ2 Ｏ3をプラズマ溶射し、
ＺｒＯ2 −８ｗｔ％Ｙ2 Ｏ3 溶射層２をコーティングす
る。このＺｒＯ2 −８ｗｔ％Ｙ2 Ｏ3 溶射層２は、多孔
質Ｎｉ板１の上端より約０．３mm厚くなることを目標に
ＺｒＯ2 −８ｗｔ％Ｙ2 Ｏ3 をプラズマ溶射して形成す
る。The outer surface of the porous Ni plate 1 thus formed is plasma sprayed with ZrO 2 -8 wt% Y 2 O 3 ,
The ZrO 2 -8 wt% Y 2 O 3 sprayed layer 2 is coated. The ZrO 2 -8 wt% Y 2 O 3 sprayed layer 2 is formed by plasma spraying ZrO 2 -8 wt% Y 2 O 3 with a target of being about 0.3 mm thicker than the upper end of the porous Ni plate 1.
【００１２】なお、本実施形態では、８ｗｔ％のＹ2 Ｏ
3 を使用しているが、Ｙ2 Ｏ3 が少ないと高温安定性が
失われ、Ｙ2 Ｏ3 が増すと強度が低下するため、Ｙ2 Ｏ
3 の量は３〜１０ｗｔ％含有するものを用いるのがよ
い。また、プラズマ溶射層２の厚さを約０．３mmとして
いるが、プラズマ溶射層２は目的上、できるだけ厚くす
ることが好ましいが、厚くすると多孔質Ｎｉ板１との境
界から剥離する可能性があり、実用上、０．５mmを目標
にするのがよい。In this embodiment, 8 wt% of Y 2 O is used.
While using 3, high temperature stability and less Y 2 O 3 is lost, because the Y 2 O 3 increases the strength is reduced, Y 2 O
The amount of 3 is preferably 3 to 10% by weight. Although the thickness of the plasma sprayed layer 2 is set to about 0.3 mm, it is preferable that the plasma sprayed layer 2 be as thick as possible for the purpose. Yes, in practice, it is better to target 0.5 mm.
【００１３】多孔質Ｎｉ板１とＺｒＯ2 −８ｗｔ％Ｙ2
Ｏ3 プラズマ溶射層２の間には、多孔質Ｎｉ板１の気孔
の部分にＺｒＯ2 −８ｗｔ％Ｙ2 Ｏ3 溶射層２の一部が
侵入し、ＮｉとＺｒＯ2 −８ｗｔ％Ｙ2 Ｏ3 プラズマ溶
射層の複合層３が形成される。これによってＮｉとＺｒ
Ｏ2 −８ｗｔ％Ｙ2 Ｏ3 プラズマ溶射層の密着性は著し
く向上する。A porous Ni plate 1 and ZrO 2 -8 wt% Y 2
A part of the ZrO 2 -8 wt% Y 2 O 3 spray layer 2 penetrates into the pores of the porous Ni plate 1 between the O 3 plasma spray layer 2, and Ni and ZrO 2 -8 wt% Y 2 O A composite layer 3 of three plasma sprayed layers is formed. This allows Ni and Zr
The adhesion of the O 2 -8 wt% Y 2 O 3 plasma sprayed layer is significantly improved.
【００１４】以上のように構成された耐食・耐摩耗性プ
ロテクタを石炭焚きボイラの伝熱管４への取付け構造の
例を図２と図３に示してある。図２において、５は、前
記したようにつくられた半割れ中空円筒形の耐食・耐摩
耗性プロテクタであり、保護すべき石炭焚きボイラの伝
熱管４の保護対象面側を覆うように被される。６は取付
け治具で、円環を半割れとした形に成形されていて、プ
ロテクタ５と反対側の伝熱管４の面上に当てられ、その
両端部をプロテクタ５の縁と溶接７によって固定されて
いる。FIGS. 2 and 3 show examples of a structure for attaching the corrosion-resistant and wear-resistant protector configured as described above to the heat transfer tube 4 of a coal-fired boiler. In FIG. 2, reference numeral 5 denotes a half-split hollow cylindrical corrosion-resistant and wear-resistant protector made as described above, which is covered so as to cover the surface to be protected of the heat transfer tube 4 of the coal-fired boiler to be protected. You. Reference numeral 6 denotes a mounting jig, which is formed in a shape in which the ring is half-split, and is applied to the surface of the heat transfer tube 4 on the opposite side of the protector 5, and both ends thereof are fixed to the edge of the protector 5 by welding 7. Have been.
【００１５】図３には、他の取付け構造が示してあり、
８はその取付け治具である。この取付け治具８は、伝熱
管４上に覆されたプロテクタ５を覆うようにＵ字形に形
成されており、その端部をボルト９とナット１０で締め
付けてプロテクタ５を固定する。FIG. 3 shows another mounting structure.
Reference numeral 8 denotes the mounting jig. The mounting jig 8 is formed in a U-shape so as to cover the protector 5 covered on the heat transfer tube 4, and its end is fastened with a bolt 9 and a nut 10 to fix the protector 5.
【００１６】本実施形態によるプロテクタで使用してい
る多孔質Ｎｉ板１は比較的容易に変形するので伝熱管４
への取付けが容易であり、また、ＺｒＯ2 −８ｗｔ％Ｙ
2 Ｏ 3 プラズマ溶射層は高温耐食性にすぐれ、高温下で
もその硬度は容易に低下しない。The protector according to the present embodiment uses
Since the porous Ni plate 1 is relatively easily deformed, the heat transfer tubes 4
Mounting on ZrOTwo-8wt% Y
TwoO ThreePlasma sprayed layers have excellent high-temperature corrosion resistance,
However, its hardness does not easily decrease.
【００１７】以上のとおり本実施形態のプロテクタは、
ＺｒＯ2 −８ｗｔ％Ｙ2 Ｏ3 プラズマ溶射層により優れ
た耐食性と耐摩耗性を発揮するとともに多孔質Ｎｉ板に
工場等で容易に溶射でき、伝熱管の当該部に簡単に取付
けられる利点がある。また、本プロテクタは、急激な温
度変化等によりＺｒＯ2 −８ｗｔ％Ｙ2 Ｏ3 プラズマ溶
射層が剥離した場合でも、ＮｉとＺｒＯ2 −８ｗｔ％Ｙ
2 Ｏ3 プラズマ溶射層の複合層は残存するため、耐食・
耐摩耗性の急激な低下は生じない。As described above, the protector of this embodiment is
The ZrO 2 -8 wt% Y 2 O 3 plasma sprayed layer exhibits excellent corrosion resistance and abrasion resistance, and can be easily sprayed on a porous Ni plate at a factory or the like, and has an advantage that it can be easily attached to the relevant portion of the heat transfer tube. . Further, even if the ZrO 2 -8 wt% Y 2 O 3 plasma sprayed layer is peeled off due to a rapid temperature change or the like, the present protector can be used with Ni and ZrO 2 -8 wt% Y.
Since the composite layer of the 2 O 3 plasma sprayed layer remains,
No sharp drop in wear resistance occurs.
【００１８】（第２実施形態）次に、図４に示す第２実
施形態について説明する。図４において１１は多孔質Ｎ
ｉ−Ｃｒ（ニッケル・クロム）板（商品名：セルメット
Ｎｉ−Ｃｒ＃２）で、その厚さは５．０mmである。この
多孔質Ｎｉ−Ｃｒ板１１を予め保護対象の伝熱管の外表
面を覆って取付けるように中空円筒を半割れした状態に
成形する。(Second Embodiment) Next, a second embodiment shown in FIG. 4 will be described. In FIG. 4, 11 is a porous N
An i-Cr (nickel-chromium) plate (trade name: Celmet Ni-Cr # 2), the thickness of which is 5.0 mm. This porous Ni-Cr plate 11 is formed in a state in which a hollow cylinder is half-broken so as to cover the outer surface of the heat transfer tube to be protected in advance.
【００１９】このように成形した多孔質Ｎｉ−Ｃｒ板１
１の外表面上にＡｌ2 Ｏ3 を高速ガス溶射（ＨＶＯＦ）
によって約０．５mm厚さを目標にコーティングする。コ
ーティングされた溶射層１２の一部は、多孔質Ｎｉ−Ｃ
ｒ板１１の気孔の部分に侵入し、Ｎｉ−ＣｒとＡｌ2 Ｏ
3 ＨＶＯＦ溶射層１２の複合層１３を形成し、溶射層１
２の密着性が著しく向上する。The porous Ni-Cr plate 1 thus formed
High-speed gas spraying (HVOF) of Al 2 O 3 on the outer surface of 1
To target a thickness of about 0.5 mm. Part of the coated thermal spray layer 12 is made of porous Ni-C
invaded pore portion of r plate 11, Ni-Cr and Al 2 O
3 The composite layer 13 of the HVOF sprayed layer 12 is formed,
2, the adhesion is remarkably improved.
【００２０】このようにＡｌ2 Ｏ3 の高速ガス溶射によ
って形成されるＡｌ2 Ｏ3 ＨＶＯＦ溶射層１２は、伝熱
管を保護する上ではできるだけ厚い方が好ましいが、厚
くするとＮｉ−Ｃｒ板１１との境界で剥離する可能性が
あり、０．３ｍｍ以上、実用上は０．５mmを目標とする
のが好ましい。以上のように構成された耐食・耐摩耗性
プロテクタを伝熱管４に取付けるやり方は、先に説明し
た図２、図３に示したやり方と同じでよいのでその説明
を省略する。[0020] Thus Al 2 O 3 HVOF sprayed layer 12 formed by the high velocity gas spraying Al 2 O 3 is better as thick as possible is preferable in protecting the heat transfer tube, when thick as Ni-Cr plate 11 May be peeled at the boundary of, and it is preferable to set the target at 0.3 mm or more, and practically 0.5 mm. The manner of attaching the corrosion-resistant and abrasion-resistant protector configured as described above to the heat transfer tube 4 may be the same as the manner shown in FIGS. 2 and 3 described above, and a description thereof will be omitted.
【００２１】以上説明した第１実施形態、第２実施形態
による耐食・耐摩耗性プロテクタと、従来どおりステン
レス鋼材ＳＵＳ３１０Ｓ製のプロテクタを石炭焚きボイ
ラ再熱器管に取付けて約１年間の運転後、取り出し調査
した結果は以下のとおりであり、本発明によるプロテク
タの長寿命化が明確に認められた。After the corrosion-resistant and abrasion-resistant protectors according to the first and second embodiments described above and the stainless steel SUS310S protector are attached to the coal-fired boiler reheater tube as in the conventional case, the operation is performed for about one year. The results of the removal investigation are as follows, and it was clearly recognized that the life of the protector according to the present invention was prolonged.
【００２２】[0022]
【表１】 [Table 1]
【００２３】以上説明した実施形態では、多孔質金属板
としての多孔質Ｎｉ板１及び多孔質Ｎｉ−Ｃｒ板１１
は、いずれも５．０mm厚のものを使用しているが、本発
明のプロテクタに使用する多孔質金属板の厚さはこれに
限定されるものでなく、適宜選択可能である。薄過ぎる
とプロテクタとしての効果が低く、厚いと伝熱管への取
付けが難しくなるので、その厚さは３〜１０mmが適切で
ある。In the embodiment described above, the porous Ni plate 1 and the porous Ni—Cr plate 11 as the porous metal plates are used.
Have a thickness of 5.0 mm, but the thickness of the porous metal plate used in the protector of the present invention is not limited to this, and can be appropriately selected. If the thickness is too small, the effect as a protector is low. If the thickness is too large, it is difficult to attach to the heat transfer tube. Therefore, the thickness is suitably 3 to 10 mm.
【００２４】以上、本発明を図示した実施形態に基づい
て具体的に説明したが、本発明がこれらの実施形態に限
定されず特許請求の範囲に示す本発明の範囲内で、その
具体的構造、構成に種々の変更を加えてよいことはいう
までもない。As described above, the present invention has been specifically described based on the illustrated embodiments. However, the present invention is not limited to these embodiments, and specific structures within the scope of the present invention shown in the claims are set forth. Needless to say, various changes may be made to the configuration.
【００２５】例えば、上記実施形態では、多孔質金属板
としてＮｉ板、Ｎｉ−Ｃｒ板を使用しているが、これに
限定されず適宜の材質のものを採用してよいし、また、
その多孔質金属板の外表面に溶射するセラミックスとし
てＺｒＯ2 −８ｗｔ％Ｙ2 Ｏ 3 、Ａｌ2 Ｏ3 を用いてい
るが、これに限定されず、適宜の耐食・耐摩耗性のセラ
ミックスを採用してよい。For example, in the above embodiment, the porous metal plate
Ni plate and Ni-Cr plate are used as
The material is not limited and may be any suitable material.
Ceramics sprayed on the outer surface of the porous metal plate
ZrOTwo-8wt% YTwoO Three, AlTwoOThreeUsing
However, the present invention is not limited to this.
You can adopt a mix.
【００２６】[0026]
【発明の効果】以上説明したように、本発明は、成形さ
れた多孔質金属板の外表面に耐食・耐摩耗性に優れたセ
ラミックスを溶射し、前記多孔質金属板と前記溶射セラ
ミックスの境界に前記多孔質金属板と前記溶射セラミッ
クスの複合層を形成させた耐食・耐摩耗性プロテクタを
提供する。本発明のプロテクタは、耐熱及び耐食性が高
く、石炭焚きボイラ伝熱管等のプロテクタとして使用す
ることができ、長期間に亘って伝熱管等を高温下での摩
耗損傷から防止することができる。As described above, the present invention sprays ceramics having excellent corrosion resistance and abrasion resistance on the outer surface of a formed porous metal plate, and forms a boundary between the porous metal plate and the sprayed ceramics. And a corrosion-resistant and wear-resistant protector in which a composite layer of the porous metal plate and the sprayed ceramic is formed. INDUSTRIAL APPLICABILITY The protector of the present invention has high heat resistance and corrosion resistance and can be used as a protector for a coal-fired boiler heat transfer tube and the like, and can prevent the heat transfer tube and the like from being worn and damaged at a high temperature for a long period of time.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の第１実施形態による耐食・耐摩耗性プ
ロテクタの構成を示す断面図。FIG. 1 is a sectional view showing a configuration of a corrosion-resistant and wear-resistant protector according to a first embodiment of the present invention.
【図２】本発明の実施形態による耐食・耐摩耗性プロテ
クタの伝熱管への取付け治具の例を示す説明図で、
（ａ）は側面図、（ｂ）は（ａ）図のＡ−Ａ線に沿う断
面図、（ｃ）は（ａ）図のＢ−Ｂ線に沿う断面図。FIG. 2 is an explanatory view showing an example of a jig for attaching a corrosion-resistant and wear-resistant protector to a heat transfer tube according to an embodiment of the present invention;
(A) is a side view, (b) is a cross-sectional view along line AA in (a), (c) is a cross-sectional view along line BB in (a).
【図３】本発明の実施形態による耐食・耐摩耗性プロテ
クタの伝熱管への取付け治具の他の例を示す説明図で、
（ａ）は側面図、（ｂ）は（ａ）図のＡ−Ａ線に沿う断
面図、（ｃ）は（ａ）のＢ−Ｂ線に沿う断面図。FIG. 3 is an explanatory view showing another example of a jig for attaching a corrosion-resistant and abrasion-resistant protector to a heat transfer tube according to an embodiment of the present invention;
(A) is a side view, (b) is a cross-sectional view along line AA of (a), (c) is a cross-sectional view along line BB of (a).
【図４】本発明の第２実施形態による耐食・耐摩耗性プ
ロテクタの構成を示す断面図。FIG. 4 is a cross-sectional view illustrating a configuration of a corrosion / wear resistant protector according to a second embodiment of the present invention.
１ 多孔質Ｎｉ板 ２ ＺｒＯ2 −８ｗｔ％Ｙ2 Ｏ3 プラズマ溶射層 ３ 複合層 ４ ボイラの伝熱管 ５ 耐食・耐摩耗性プロテクタ ６ 取付け治具 ７ 溶接 ８ 取付け具 ９ ボルト １０ ナット １１ Ｎｉ−Ｃｒ板 １２ Ａｌ2 Ｏ3 ＨＶＯＦ溶射層 １３ 複合層REFERENCE SIGNS LIST 1 Porous Ni plate 2 ZrO 2 -8 wt% Y 2 O 3 Plasma sprayed layer 3 Composite layer 4 Heat transfer tube of boiler 5 Corrosion-resistant and wear-resistant protector 6 Mounting jig 7 Welding 8 Mounting tool 9 Bolt 10 Nut 11 Ni-Cr Plate 12 Al 2 O 3 HVOF sprayed layer 13 Composite layer
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｆ２８Ｆ 19/02 ５０１ Ｆ２８Ｆ 19/02 ５０１Ｃ // Ｃ２２Ｃ 19/05 Ｃ２２Ｃ 19/05 Ｚ ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) F28F 19/02 501 F28F 19/02 501C // C22C 19/05 C22C 19/05 Z
Claims (5)
・耐摩耗性に優れたセラミックスを溶射し、前記多孔質
金属板と前記溶射セラミックスの境界に前記多孔質金属
板と前記溶射セラミックスの複合層を形成させて成るこ
とを特徴とする耐食・耐摩耗性プロテクタ。1. A ceramic having excellent corrosion resistance and abrasion resistance is sprayed on an outer surface of a formed porous metal plate, and the porous metal plate and the sprayed ceramic are formed at a boundary between the porous metal plate and the sprayed ceramic. A corrosion and wear resistant protector characterized by forming a composite layer of
り、前記セラミックスがＺｒＯ2 −３〜１０ｗｔ％Ｙ2
Ｏ3 であることを特徴とする請求項１に記載の耐食・耐
摩耗性プロテクタ。2. The method according to claim 1, wherein the porous metal plate is a porous Ni plate, and the ceramic is ZrO 2 -3 to 10 wt% Y 2.
2. The corrosion and wear resistant protector according to claim 1, wherein the protector is O 3 .
であり、前記セラミックスがＡｌ2 Ｏ3 であることを特
徴とする請求項１に記載の耐食・耐摩耗性プロテクタ。3. The protector according to claim 1, wherein the porous metal plate is a porous Ni—Cr plate, and the ceramic is Al 2 O 3 .
記溶射セラミックスが０．３mm以上の厚さに形成されて
いることを特徴とする請求項１〜３のいずれかに記載の
耐食・耐摩耗性プロテクタ。4. The corrosion resistance according to claim 1, wherein the porous metal plate has a thickness of 3 to 10 mm, and the sprayed ceramic has a thickness of 0.3 mm or more.・ Abrasion resistant protector.
ように形成され、前記耐食・耐摩耗性プロテクタが取付
け具によって前記伝熱管の外表面の半分を覆って取付け
られることを特徴とする請求項１〜３のいずれかに記載
の耐食・耐摩耗性プロテクタ。5. The heat transfer pipe according to claim 5, wherein the porous metal plate is formed so as to cover half of the heat transfer tube, and the corrosion and wear resistant protector is mounted over a half of the outer surface of the heat transfer tube by a fixture. The corrosion / abrasion resistant protector according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000071491A JP2001262312A (en) | 2000-03-15 | 2000-03-15 | Corrosion resistant and wear resistant protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000071491A JP2001262312A (en) | 2000-03-15 | 2000-03-15 | Corrosion resistant and wear resistant protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001262312A true JP2001262312A (en) | 2001-09-26 |
Family
ID=18590071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000071491A Withdrawn JP2001262312A (en) | 2000-03-15 | 2000-03-15 | Corrosion resistant and wear resistant protector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001262312A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040051030A (en) * | 2002-12-11 | 2004-06-18 | 엘지전자 주식회사 | Apparatus for preventing corrosion of condenser in air conditioner |
| JP2006518807A (en) * | 2003-01-24 | 2006-08-17 | ウニヴェルズィテート デス ザールランデス | Method for producing metal molded body having ceramic layer, metal molded body and use thereof |
| JP2013112836A (en) * | 2011-11-25 | 2013-06-10 | Dai Ichi High Frequency Co Ltd | Method for producing protector for metal tube |
| CN103628020A (en) * | 2012-08-23 | 2014-03-12 | 中国石油天然气股份有限公司 | Conveying device used for oil pipe continuous thermal spraying |
| JP2016000864A (en) * | 2015-08-04 | 2016-01-07 | 第一高周波工業株式会社 | Production method of protector for metal member |
| CN107654793A (en) * | 2017-11-01 | 2018-02-02 | 石会所 | A kind of boiler tube protector and means of defence |
-
2000
- 2000-03-15 JP JP2000071491A patent/JP2001262312A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040051030A (en) * | 2002-12-11 | 2004-06-18 | 엘지전자 주식회사 | Apparatus for preventing corrosion of condenser in air conditioner |
| JP2006518807A (en) * | 2003-01-24 | 2006-08-17 | ウニヴェルズィテート デス ザールランデス | Method for producing metal molded body having ceramic layer, metal molded body and use thereof |
| JP4662916B2 (en) * | 2003-01-24 | 2011-03-30 | ウニヴェルズィテート デス ザールランデス | Method for producing metal molded body having ceramic layer, metal molded body and use thereof |
| JP2013112836A (en) * | 2011-11-25 | 2013-06-10 | Dai Ichi High Frequency Co Ltd | Method for producing protector for metal tube |
| CN103628020A (en) * | 2012-08-23 | 2014-03-12 | 中国石油天然气股份有限公司 | Conveying device used for oil pipe continuous thermal spraying |
| JP2016000864A (en) * | 2015-08-04 | 2016-01-07 | 第一高周波工業株式会社 | Production method of protector for metal member |
| CN107654793A (en) * | 2017-11-01 | 2018-02-02 | 石会所 | A kind of boiler tube protector and means of defence |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20070605 |