JPH06219855A - Metallic powder containing alumina-mgo-al2o3 spinel based thermal spraying material - Google Patents
Metallic powder containing alumina-mgo-al2o3 spinel based thermal spraying materialInfo
- Publication number
- JPH06219855A JPH06219855A JP5007826A JP782693A JPH06219855A JP H06219855 A JPH06219855 A JP H06219855A JP 5007826 A JP5007826 A JP 5007826A JP 782693 A JP782693 A JP 782693A JP H06219855 A JPH06219855 A JP H06219855A
- Authority
- JP
- Japan
- Prior art keywords
- mgo
- thermal spraying
- alumina
- spraying material
- al2o3
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5093—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with elements other than metals or carbon
- C04B41/5096—Silicon
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
- C04B2111/00577—Coating or impregnation materials applied by spraying
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0087—Uses not provided for elsewhere in C04B2111/00 for metallurgical applications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Products (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、各種工業窯炉のライニ
ングの形成あるいは補修用として用いる溶射材に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermal spray material used for forming or repairing the lining of various industrial kilns.
【０００２】[0002]
【従来の技術】各種工業窯炉のライニングの形成あるい
はライニングの補修法として、ＬＰＧ−酸素，灯油−酸
素，コークス粉−酸素等による火炎中を、耐火粉末を飛
行させて溶融し、炉壁に吹付ける溶射法があり、そのた
めの溶射材として、特開平１−２６４９７６号公報に開
示されているアルミナ−ＭｇＯ・Ａｌ2 Ｏ3 スピネル系
の耐火材がある。2. Description of the Related Art As a method for forming or repairing linings in various industrial kilns, refractory powders are melted by flying refractory powders in a flame of LPG-oxygen, kerosene-oxygen, coke powder-oxygen, etc. There is a spraying method of spraying, and as a spraying material therefor, there is an alumina-MgO.Al 2 O 3 spinel refractory material disclosed in Japanese Patent Laid-Open No. 1-264976.
【０００３】アルミナ−ＭｇＯ・Ａｌ2 Ｏ3 スピネル系
材料は、溶射施工体としても優れた耐食性と耐スポーリ
ング性を兼ね備えたものである。Alumina-MgO.Al 2 O 3 spinel material has both excellent corrosion resistance and spalling resistance as a thermal spraying material.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、このア
ルミナ−ＭｇＯ・Ａｌ2 Ｏ3 スピネル系材料は、施工体
に層状の空隙が発生しやすく、また、溶射を施す耐火物
母材との接着性においても劣る。このため、施工体は、
それ自体に層状剥離を起こしたり、母材との接着面から
の剥離が発生し、それ自体が本来有する優れた耐スポー
リング性，耐食性を充分に発揮できない場合がある。However, this alumina-MgO.Al 2 O 3 spinel-based material is apt to cause layered voids in the construction body, and also has a poor adhesion to the refractory base material to be sprayed. Is also inferior. Therefore, the construction body is
There is a case where the layer itself peels off or peels off from the bonding surface with the base material, so that the excellent spalling resistance and corrosion resistance originally possessed by themselves cannot be sufficiently exerted.
【０００５】また、熱間強度，耐食性の向上のために、
使用原料中の，ＭｇＯ・Ａｌ2 Ｏ3スピネル系原料の使
用比率を上げたり、ＭｇＯ・Ａｌ2 Ｏ3 スピネル系原料
として緻密性と強度に優れた電融原料も検討されたが、
ＭｇＯ・Ａｌ2 Ｏ3 スピネル系原料自体が溶融性におい
て劣り、そのため、付着率の低下による接着性の劣化、
層状空隙の一層の助長、発塵の増加、作業性等に問題が
あって、実際の使用に供されていない。In order to improve hot strength and corrosion resistance,
The use ratio of MgO.Al 2 O 3 spinel raw materials in the raw materials used was increased, and electromelting raw materials excellent in compactness and strength were studied as MgO.Al 2 O 3 spinel raw materials.
The MgO.Al 2 O 3 spinel raw material itself is inferior in meltability, and therefore the adhesiveness is deteriorated due to a decrease in the adhesion rate.
There is a problem with further promotion of layered voids, increase in dust generation, workability, etc., and it is not used for actual use.
【０００６】このように、従来のアルミナ−ＭｇＯ・Ａ
ｌ2 Ｏ3 スピネル系溶射材は、その使用原料の特性から
材料の溶融性において劣り、そのため仮焼アルミナのよ
うな高活性原料を比較的多量に使用し、ある程度の溶融
性は確保されているものの、溶融材自体の耐火性が高
い。そのため、炉壁と濡れ性が悪く、更に壁面付着後の
固化も比較的早いため接着性に劣り、層状空隙も発生し
易い。Thus, the conventional alumina-MgO.A
The l 2 O 3 spinel thermal spray material is inferior in the meltability of the material due to the characteristics of the raw material used, so that a relatively large amount of a highly active raw material such as calcined alumina is used and a certain degree of meltability is secured. However, the molten material itself has high fire resistance. Therefore, the wettability with the furnace wall is poor, and further, the solidification after the wall surface is adhered is relatively fast, so that the adhesiveness is poor and the layered voids are easily generated.
【０００７】本発明の目的は、層状空隙がなく、接着性
に優れ、それ自体が有する耐食性と耐スポーリング性を
十分に発揮できるアルミナ−ＭｇＯ・Ａｌ2 Ｏ3 スピネ
ル系の溶射材を提供することにある。An object of the present invention is to provide an alumina-MgO.Al 2 O 3 spinel-based thermal spray material which has no layered voids, is excellent in adhesiveness, and can sufficiently exhibit its own corrosion resistance and spalling resistance. Especially.
【０００８】[0008]
【課題を解決するための手段】本発明の溶射材は、仮焼
アルミナを１０重量％以上配合したＭｇＯ・Ａｌ2 Ｏ3
スピネル系原料に、金属シリコン及びシリコン含有金属
より選ばれる１種以上の金属添加物を金属シリコンとし
て０．５〜４重量％配合したことを特徴とする。The thermal spray material of the present invention comprises MgO.Al 2 O 3 containing 10% by weight or more of calcined alumina.
One or more kinds of metal additives selected from metallic silicon and silicon-containing metals are added to the spinel raw material as metallic silicon in an amount of 0.5 to 4% by weight.
【０００９】金属シリコンの添加量は配合構成により、
配合全体の溶融性を加味して上記範囲内で加減する。The amount of metallic silicon added depends on the composition.
The meltability of the entire composition is taken into consideration and the amount is adjusted within the above range.
【００１０】本発明の溶射材は、上記配合原料以外に
も、本発明の効果を阻害しない範囲で、他の耐火物原
料、たとえば、マグネシア等を適量添加することもでき
る。In addition to the above-mentioned blended raw materials, the thermal spray material of the present invention may contain other refractory raw materials, such as magnesia, in an appropriate amount within a range that does not impair the effects of the present invention.
【００１１】[0011]
【作用】金属シリコン及びシリコン含有金属の添加効果
としては、それ自身火炎溶射中に酸化発熱反応をするた
め助燃材として作用し溶射材の溶融性を向上せしめる。
また、酸化生成したＳｉＯ2 は、アルミナ，ＭｇＯ・Ａ
ｌ2 Ｏ3 スピネルと反応し、低融点成分を生成する。こ
れら低融点成分の少量の混入により、溶射材の濡れ性が
改善され、付着直後の固化も比較的遅くなり、結果とし
て母材や層間の接着性が改善される。さらに、同様な理
由から、電融原料等の難溶融性原料の量的使用も可能に
なる。The effect of addition of silicon metal and silicon-containing metal is that the metal itself undergoes an oxidative exothermic reaction during flame spraying and acts as an auxiliary combustion material to improve the meltability of the sprayed material.
In addition, the oxidized SiO 2 is alumina, MgO · A
Reacts with l 2 O 3 spinel to form low melting point components. By incorporating a small amount of these low-melting-point components, the wettability of the thermal spray material is improved, the solidification immediately after the adhesion is also relatively delayed, and as a result, the adhesion between the base material and the layers is improved. Further, for the same reason, it becomes possible to quantitatively use an infusible material such as an electromelting material.
【００１２】しかし、これら金属の添加量について充分
な配慮をする必要がある。すなわち、生成した低融物
は、溶射体にとって必ずしも好ましいものではない。こ
れら低融物は接着性や層状空隙については改善効果を発
揮するものの、生成量が多すぎると熱間強度や耐食性に
おいて悪影響を及ぼすものであり、添加量と改善効果に
ついて充分検討されたものでなければならない。However, it is necessary to give sufficient consideration to the added amounts of these metals. That is, the produced low-melt material is not always preferable for the thermal spray material. Although these low-melting substances exert an improving effect on the adhesiveness and the layered voids, if the amount of formation is too large, they adversely affect the hot strength and the corrosion resistance, and the addition amount and the improving effect have been thoroughly studied. There must be.
【００１３】４重量％を超えると熱間強度等を著しく劣
化せしめ、更に金属により発生するガスやＳｉＯ2 系の
ガラスの生成量が多くなり、発泡現象が激しくなり好ま
しくない。また、添加量が少なすぎるとその効果が充分
に発揮されないため、金属シリコン等の添加量は０．５
〜４重量％の範囲が良好である。If it exceeds 4% by weight, the hot strength and the like are significantly deteriorated, and further the gas generated by the metal and the amount of SiO 2 glass produced are increased, and the foaming phenomenon becomes severe, which is not preferable. Further, if the addition amount is too small, the effect is not sufficiently exerted, and therefore the addition amount of metallic silicon is 0.5
A range of up to 4% by weight is good.
【００１４】[0014]
【実施例】表１は、本発明の溶射材の配合例と、プロパ
ン−酸素の火炎を熱源として溶射したときの溶射体の特
性を、比較例と共に示す。EXAMPLES Table 1 shows a blending example of the thermal spraying material of the present invention and the characteristics of the thermal spraying body when sprayed with a propane-oxygen flame as a heat source, together with comparative examples.
【００１５】[0015]
【表１】 この表１に示す本発明の実施例の場合の、接着性、層状
空隙の発生、発泡の程度、熱間曲げ強度、付着率の全て
の特性において、シリコンを配合しない場合、シリコン
以外のアルミニウムを配合した場合、さらには、配合量
が本発明の特定範囲外の場合と比較して、きわめて優れ
たものであることがわかる。[Table 1] In the case of the examples of the present invention shown in Table 1, in all the characteristics of adhesiveness, generation of layered voids, degree of foaming, hot bending strength, and adhesion rate, when silicon was not blended, aluminum other than silicon was used. It can be seen that when compounded, the compounded amount is extremely excellent as compared with the case where the compounded amount is outside the specific range of the present invention.
【００１６】[0016]
【発明の効果】本発明によって、以下の効果を奏するこ
とができる。According to the present invention, the following effects can be obtained.
【００１７】（１）アルミナ−ＭｇＯ・Ａｌ2 Ｏ3 スピ
ネル系溶射材料に金属シリコン及びシリコン含有金属粉
末を適量添加することにより、層状空隙をなくし、接着
性に優れた溶射材を提供し得る。また、これら添加材に
より電融アルミナ、電融ＭｇＯ・Ａｌ2 Ｏ3 スピネル等
の比較的溶融しにくい原料の使用も可能にした。(1) By adding an appropriate amount of metallic silicon and silicon-containing metal powder to an alumina-MgO.Al 2 O 3 spinel thermal spray material, it is possible to eliminate layered voids and provide a thermal spray material having excellent adhesiveness. In addition, these additives also made it possible to use materials that are relatively infusible such as fused alumina and fused MgO.Al 2 O 3 spinel.
【００１８】（２）格別溶射装置，溶射条件を変更する
ことなく、接着性，耐食性，耐スポーリング性を大幅に
向上させた溶射体を成形できる。(2) It is possible to form a sprayed body with greatly improved adhesiveness, corrosion resistance, and spalling resistance without changing the special spraying apparatus and spraying conditions.
【００１９】（３）ライニングの形成，補修効果を上げ
ることができ、工業窯炉の稼動率向上，補修工数，炉材
コストの低減等に貢献する。(3) The lining can be formed and the repair effect can be improved, which contributes to the improvement of the operating rate of the industrial kiln, the repair man-hour, the cost of the furnace material, and the like.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松尾 正孝 福岡県北九州市八幡西区東浜町１番１号 黒崎窯業株式会社内 (72)発明者 永吉 英昭 福岡県京都郡苅田町長浜町35番地 日立金 属株式会社九州工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masataka Matsuo, 1-1, Higashihama-cho, Hachimansai-ku, Kitakyushu, Fukuoka Prefecture Kurosaki Ceramics Co., Ltd. (72) Hideaki Nagayoshi, 35, Nagahama-cho, Kanda-cho, Fukuoka Prefecture Kyushu factory
Claims (1)
ＭｇＯ・Ａｌ2 Ｏ3スピネル系原料に、金属シリコン及
びシリコン含有金属より選ばれる１種以上の金属添加物
を金属シリコンとして０．５〜４重量％配合した金属粉
含有アルミナ−ＭｇＯ・Ａｌ2 Ｏ3 スピネル系溶射材。1. A MgO.Al 2 O 3 spinel-based raw material containing 10% by weight or more of calcined alumina, and 0.5 to 0.5 of one or more metal additives selected from metallic silicon and silicon-containing metals as metallic silicon. Alumina-MgO.Al 2 O 3 spinel thermal spray material containing 4% by weight of metal powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5007826A JPH06219855A (en) | 1993-01-20 | 1993-01-20 | Metallic powder containing alumina-mgo-al2o3 spinel based thermal spraying material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5007826A JPH06219855A (en) | 1993-01-20 | 1993-01-20 | Metallic powder containing alumina-mgo-al2o3 spinel based thermal spraying material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06219855A true JPH06219855A (en) | 1994-08-09 |
Family
ID=11676405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5007826A Pending JPH06219855A (en) | 1993-01-20 | 1993-01-20 | Metallic powder containing alumina-mgo-al2o3 spinel based thermal spraying material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06219855A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8815167B2 (en) | 2011-09-14 | 2014-08-26 | Toyota Jidosha Kabushiki Kaisha | Electrode, electrically heating type catalyst device using same, and manufacturing method of electrically heating type catalyst device |
-
1993
- 1993-01-20 JP JP5007826A patent/JPH06219855A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8815167B2 (en) | 2011-09-14 | 2014-08-26 | Toyota Jidosha Kabushiki Kaisha | Electrode, electrically heating type catalyst device using same, and manufacturing method of electrically heating type catalyst device |
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