JPH05163561A - Thermal spraying member containing metal powder - Google Patents
Thermal spraying member containing metal powderInfo
- Publication number
- JPH05163561A JPH05163561A JP3326203A JP32620391A JPH05163561A JP H05163561 A JPH05163561 A JP H05163561A JP 3326203 A JP3326203 A JP 3326203A JP 32620391 A JP32620391 A JP 32620391A JP H05163561 A JPH05163561 A JP H05163561A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- chromium
- corrosion resistance
- silicate
- alumina
- 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
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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/34—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Ceramic Products (AREA)
Abstract
(57)【要約】
【目的】 溶射体組織，耐食性，熱間強度及び接着性を
改良した工業窯炉のライニングの形成と補修に用いるア
ルミナ系溶射材の提供。
【構成】 アルミナを１０重量％以上配合し、ＭｇＯ・
Ａｌ2 Ｏ3 系スピネル、クロム質原料、マグネシアから
選ばれる１種以上からなる耐火材料に、リン酸塩及び珪
酸塩から選ばれる１種以上を０．１〜５重量％と金属ク
ロムとして０．１〜１０重量％配合したことを特徴とし
たもので、リン酸塩及び珪酸塩から選ばれる１種以上を
少量添加するだけで、材料の低融化の効果が大きいた
め、溶射体組織が改善されて耐食性が向上し、更に金属
クロム又はクロム成分を含有する合金から選ばれる１種
以上を適量添加することにより、熱間強度及び耐食性が
大幅に向上する。(57) [Abstract] [Purpose] To provide an alumina-based thermal spray material used for forming and repairing the lining of an industrial kiln with improved thermal spray structure, corrosion resistance, hot strength and adhesiveness. [Constitution] Mixing 10% by weight or more of alumina, MgO.
0.1 to 5% by weight of one or more selected from phosphate and silicate and 0.1 to 5% by weight of metal chromium in a refractory material composed of one or more selected from Al 2 O 3 based spinel, chromic raw material and magnesia . It is characterized in that it is blended in an amount of 1 to 10% by weight. Only by adding a small amount of one or more kinds selected from phosphate and silicate, the effect of lowering the melting point of the material is great, so that the structure of the sprayed body is improved. Corrosion resistance is improved, and hot strength and corrosion resistance are significantly improved by adding an appropriate amount of one or more kinds selected from metallic chromium or an alloy containing a chromium component.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、工業窯炉の耐火ライニ
ングの形成あるいは補修用として用いられる金属粉含有
溶射材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal powder-containing thermal spray material used for forming or repairing a refractory lining of an industrial kiln.
【０００２】[0002]
【従来の技術】近年、工業窯炉の耐火ライニングの形成
あるいはその補修にＬＰＧ−酸素、灯油−酸素及びコー
クス粉−酸素炎等による火炎あるいはプラズマ等による
高温，高速の火炎中を耐火粉末を飛行させて溶融し、窯
炉の内壁に吹付ける溶射法が利用されるようになった。2. Description of the Related Art In recent years, for forming or repairing a refractory lining of an industrial kiln, a refractory powder is flown through a flame of LPG-oxygen, kerosene-oxygen and coke powder-oxygen flame, or high temperature and high speed flame of plasma. Then, a thermal spraying method of melting and then spraying the inner wall of the kiln has come to be used.
【０００３】この中、アルミナ系溶射材を溶射する方法
として、バーナーを移動させて溶射材を一層ずつ重ね溶
射して厚みを増していく方法が採られている。ところ
が、このアルミナ系の中性系材料は、いずれも溶射体形
成時に層と層が剥離し易く、その結果、層と層が大きく
離れた層状の大きな空隙を生じ易く、溶射体の耐食性，
熱間強度，接着性に劣り、満足できる溶射体を得ること
ができない。Among them, as a method for spraying the alumina-based spray material, a method is adopted in which the burner is moved and the spray material is layer-by-layer and sprayed to increase the thickness. However, in any of the alumina-based neutral materials, the layers are easily separated during the formation of the thermal spray, and as a result, layer-like large voids that are greatly separated from each other are easily generated, and the corrosion resistance of the thermal spray,
It is inferior in hot strength and adhesiveness, and it is not possible to obtain a satisfactory thermal spray material.
【０００４】このアルミナ系溶射材の欠点を解消するた
めに、特開平１−２６４９７６号公報に開示されている
アルミナ−ＭｇＯ・Ａｌ2 Ｏ3 系スピネル系、特公昭６
０−３５３１１号公報に開示されているアルミナ−クロ
ム系等が使用されるようになったが、これらの欠点をす
べて解消するには至っていない。In order to solve the drawbacks of the alumina-based thermal spray material, the alumina-MgO.Al 2 O 3 -based spinel system disclosed in Japanese Patent Laid-Open No. 1-264976, Japanese Patent Publication No. Sho 6-62.
Although the alumina-chromium system disclosed in JP-A No. 0-35311 has come to be used, all of these drawbacks have not been solved yet.
【０００５】とくに、前記の特公昭６０−３５３１１号
公報に開示されているＡｌ2 Ｏ3 とＣｒ2 Ｏ3 を組合せ
た溶射材は、Ｃｒ2 Ｏ3 質原料として、クロム鉄鉱，マ
グクロクリンカーを使用しているため、溶射体の耐食性
の向上には効果があるが、Ｃｒ2 Ｏ3 質原料の融点が高
いことにより、添加したＣｒ2 Ｏ3 は充分にＡｌ2 Ｏ3
と接触して固溶する効率が低いため熱間強度の向上には
寄与しない。In particular, the thermal spray material combining Al 2 O 3 and Cr 2 O 3 disclosed in the above Japanese Patent Publication No. 60-35311 discloses chromite or magcro clinker as a Cr 2 O 3 raw material. Since it is used, it is effective in improving the corrosion resistance of the thermal spray material, but due to the high melting point of the Cr 2 O 3 -based raw material, the added Cr 2 O 3 is sufficiently Al 2 O 3
It does not contribute to the improvement of hot strength because the efficiency of contacting with and forming a solid solution is low.
【０００６】さらに、溶射材に金属シリコンのような金
属粉を添加することによって溶融性を上げることも特公
昭４３−１６０１号公報，特公昭４９−４６３６４号公
報等によって公知であるが、アルミナ系の中性系材料の
溶射体の積層間の空隙の形成防止には効果はない。Further, it is known that the melting property is improved by adding a metal powder such as metallic silicon to the thermal spraying material, as disclosed in Japanese Patent Publication Nos. 43-1601 and 49-46364. There is no effect in preventing the formation of voids between the layers of the thermal spraying material of the neutral material.
【０００７】[0007]
【発明が解決しようとする課題】本発明の目的は、充分
な耐食性，熱間強度，接着性を有し、製鋼用転炉や取鍋
のライニングに適用しても充分な耐用性を有するアルミ
ナ系溶射材を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is alumina having sufficient corrosion resistance, hot strength and adhesiveness, and having sufficient durability even when applied to the lining of steelmaking converters and ladles. The purpose is to provide a thermal spray material.
【０００８】[0008]
【課題を解決するための手段】本発明は、アルミナを１
０重量％以上と、残部がリン酸塩及び珪酸塩から選ばれ
る１種以上を０．１〜５重量％と金属クロムを１〜１０
重量％配合したＭｇＯ・Ａｌ2 Ｏ3 系スピネル、クロム
質原料、マグネシアから選ばれた１種以上の耐火材料と
からなることを特徴とする。SUMMARY OF THE INVENTION The present invention uses alumina 1
0% by weight or more, with the balance being 0.1 to 5% by weight of one or more kinds selected from phosphates and silicates, and 1 to 10 of metallic chromium.
It is characterized by being composed of at least one refractory material selected from MgO.Al 2 O 3 spinel blended in a weight percentage, a chromic raw material, and magnesia.
【０００９】リン酸塩はたとえば、リン酸アルミニウ
ム，リン酸ナトリウム等が使用でき、珪酸塩は珪酸ソー
ダ，珪酸カリウム等の珪酸アルカリ金属塩等で粒度が
０．５ｍｍ以下のものを使用する。As the phosphate, for example, aluminum phosphate, sodium phosphate or the like can be used, and as the silicate, an alkali metal silicate such as sodium silicate or potassium silicate having a particle size of 0.5 mm or less is used.
【００１０】金属クロムとしては、粒度が０．５ｍｍ以
下の金属クロム単味あるいはクロムの含有量が１重量％
以上のＦｅ−Ｃｒ系，Ｓｉ−Ｃｒ系等のクロムを含有す
る合金が使用できる。As metallic chromium, the metallic chromium having a grain size of 0.5 mm or less or the content of chromium is 1% by weight.
Alloys containing chromium such as the above Fe-Cr type and Si-Cr type can be used.
【００１１】[0011]
【作用】本発明は、アルミナを１０重量％以上配合し、
ＭｇＯ・Ａｌ2 Ｏ3 系スピネル、クロム質原料、マグネ
シアから選ばれる１種以上からなる耐火材料に、リン酸
塩及び珪酸塩から選ばれる１種以上を適量添加すること
により、上記溶射体組織の欠点である層状の大きな空隙
の形成をなくし、また接着性も同時に改良でき、更に金
属クロム及びクロム成分を含有する合金から選ばれる１
種以上を適量添加することにより、その酸化熱を利用
し、溶射体組織を強化して耐食性，熱間強度を大幅に向
上することができる。The present invention contains 10% by weight or more of alumina,
By adding an appropriate amount of one or more kinds selected from phosphate and silicate to a refractory material composed of one or more kinds selected from MgO / Al 2 O 3 based spinel, chromic raw material and magnesia, The formation of large layered voids, which is a drawback, can be eliminated, and the adhesiveness can be improved at the same time. Further, it is selected from metal chromium and alloys containing chromium components.
By adding an appropriate amount of at least one species, it is possible to utilize the heat of oxidation to strengthen the structure of the sprayed body and significantly improve the corrosion resistance and hot strength.
【００１２】アルミナが１０重量％未満の配合である
と、溶融性が悪く、リン酸塩、珪酸塩、クロム等の添加
によっても層状の空隙の形成を防止することはできな
い。When the content of alumina is less than 10% by weight, the meltability is poor, and formation of layered voids cannot be prevented even by adding phosphate, silicate, chromium or the like.
【００１３】アルミナを１０重量％以上配合し、ＭｇＯ
・Ａｌ2 Ｏ3 系スピネル、クロム質原料、マグネシアか
ら選ばれる１種以上からなる耐火材料は、溶射体形成時
に層と層が剥離し易く、その結果、層と層が大きく離れ
た層状の大きな空隙を生じ易いが、その原因はいずれの
系も融点が高い材料同士の組合せであり、最も融点の低
い材料（アルミナ）でも２０５０℃あるため、材料の融
点が高く、固化し易いために、１層の融着性が悪く、層
と層が剥離し易くなるためと考えられる。そこで、材料
の融点を下げて１層の融着性を改善すれば、層状の大き
な空隙をなくすことができ、更に施工面との融着性、す
なわち、接着性も向上できる。リン酸塩及び珪酸塩は、
アルミナの融点を下げる材料として非常に効果がある。10% by weight or more of alumina is added to prepare MgO.
A refractory material composed of at least one selected from Al 2 O 3 based spinel, chromic raw material, and magnesia is easily separated from each other when forming a thermal spray, and as a result, the layers are largely separated from each other. Voids are easily generated, but the cause is a combination of materials with high melting points in any system, and even the material with the lowest melting point (alumina) has a temperature of 2050 ° C., so the melting point of the material is high and it easily solidifies. It is considered that the fusion property of the layers is poor and the layers are easily separated from each other. Therefore, if the melting point of the material is lowered to improve the fusion property of one layer, a large layered void can be eliminated, and the fusion property with the construction surface, that is, the adhesiveness can be improved. Phosphates and silicates are
It is very effective as a material for lowering the melting point of alumina.
【００１４】一般に中性系，塩基性系材料の融点を下げ
る材料は、リン酸塩及び珪酸塩以外にもシリカ，酸化鉄
等があるが、低融化の効果はリン酸塩及び珪酸塩よりも
弱く、従って、添加量も０．１〜５重量％では不充分で
あり、それ以上の添加量が必要となる。シリカ，酸化鉄
を５重量％以上添加した場合、溶射体の組織，接着性は
向上するが、リン酸塩及び珪酸塩よりも弱く、しかも耐
食性は低下する欠点がある。リン酸塩及び珪酸塩の場合
は、溶射フレームを通過中に材料と反応して低融化さ
せ、施工面に付着した後、溶射体を形成させている途
中、あるいは形成後にある程度蒸発すると考えられる。
そのために、リン酸塩及び珪酸塩は、材料の低融化を生
じさせるが、耐食性の低下がシリカ，酸化鉄等に比較し
て極めて小さいと考えられる。In general, materials for lowering the melting point of neutral or basic materials include silica, iron oxide, etc. in addition to phosphates and silicates, but the effect of lowering the melting point is higher than that of phosphates and silicates. It is weak, and therefore, the addition amount of 0.1 to 5% by weight is insufficient, and the addition amount more than that is required. When silica and iron oxide are added in an amount of 5% by weight or more, the structure and adhesiveness of the sprayed body are improved, but they are weaker than phosphates and silicates, and there is a drawback that corrosion resistance is reduced. In the case of phosphates and silicates, it is considered that they react with the material while passing through the flame spraying frame to lower the melting point and adhere to the work surface, and then vaporize to some extent during the formation of the sprayed body or after the formation.
Therefore, phosphates and silicates cause low melting of the material, but the deterioration of corrosion resistance is considered to be extremely small as compared with silica, iron oxide and the like.
【００１５】金属クロムはクロム質原料と異なり、酸化
する際に蒸発するため、溶射体の溶融性を高める効果が
あり、そのために、Ｃｒが酸化されて生じたＣｒ2 Ｏ3
は充分にＡｌ2 Ｏ3 へ固溶する効率が高い。さらに、Ｃ
ｒが酸化されて生じたＣｒ2 Ｏ3 が溶鋼，スラグに濡れ
にくいために、耐食性を向上させ、Ａｌ2 Ｏ3 と完全固
溶してＡｌ2 Ｏ3 の融点を上げ、熱間強度及び耐食性も
向上する。Unlike chromium-based raw materials, metallic chromium evaporates when it is oxidized, so that it has the effect of enhancing the meltability of the thermal spray material. Therefore, Cr 2 O 3 produced by oxidizing Cr is produced.
Has a high efficiency of sufficiently forming a solid solution in Al 2 O 3 . Furthermore, C
r is the Cr 2 O 3 produced by oxidation of molten steel, in order to not easily wetted by the slag, to improve the corrosion resistance, increase the melting point of Al 2 O 3 is completely solid solution with Al 2 O 3, hot strength and corrosion resistance Also improves.
【００１６】リン酸塩及び珪酸塩との併合配合は、互い
に効果の併殺が生じるように思われるが、実際にはお互
いにそれぞれの効果は複合され発揮される。すなわち、
リン酸塩及び珪酸塩によるアルミナの融点低下が先に生
じ、その後に金属クロム及びクロム成分を含有する合金
によるアルミナの融点上昇の効果が生じているものと思
われる。Ｃｒ2 Ｏ3 がＡｌ2 Ｏ3 に固溶する方がリン酸
塩及び珪酸塩がアルミナを低融化するよりも時間がかか
る結果、これらの効果が複合化するものと考えられる。The combined use of the phosphate and the silicate seems to cause the mutual killing of the effects, but in reality, the respective effects are compounded and exerted. That is,
It is considered that the lowering of the melting point of alumina due to the phosphate and silicate occurs first, and then the effect of increasing the melting point of alumina due to the metal chromium and the alloy containing the chromium component occurs. It is considered that Cr 2 O 3 takes a longer time to form a solid solution with Al 2 O 3 than phosphates and silicates lower melting alumina, and as a result, these effects are combined.
【００１７】本発明に使用するリン酸塩，珪酸塩の配合
割合が０．１重量％未満では材料の低融化の効果が小さ
く、層状の大きな空隙をなくす効果及び接着性向上の効
果がなく、５重量％超では材料の低融化の効果が大きす
ぎ溶射中に施工面より垂れて落ちてしまい、付着歩留り
が低下し、また耐食性も低下する。When the blending ratio of the phosphate or silicate used in the present invention is less than 0.1% by weight, the effect of lowering the melting of the material is small, the effect of eliminating large layered voids and the effect of improving the adhesiveness are not obtained. If it exceeds 5% by weight, the effect of lowering the melting point of the material is too great and drops from the construction surface during spraying, resulting in a decrease in adhesion yield and a decrease in corrosion resistance.
【００１８】粒度は０．５ｍｍ超では溶融性の低下が大
きく、リン酸塩，珪酸塩の材料の低融化の効果が下がる
ため、０．５ｍｍ以下である必要がある。If the particle size exceeds 0.5 mm, the meltability is greatly reduced, and the effect of lowering the melting point of the phosphate and silicate materials is reduced, so the particle size must be 0.5 mm or less.
【００１９】また本発明に使用する金属クロム及びクロ
ム成分を含有する合金は、クロムの含有率は１〜１０重
量％とする。１重量％未満では酸化されてＣｒ2 Ｏ3 と
なり、Ａｌ2 Ｏ3 へ固溶する際の固溶するＣｒ2 Ｏ3 の
割合が少なくなり溶射体を強化する効果が低くなる。一
方、１０重量％超添加しても溶射体の強化する効果は下
がることはないが、金属クロム及びクロム成分を含有す
る合金は高価であるため、配合割合が多くなればそれだ
けでコストが大きくなる。従って、１〜１０重量％の範
囲で充分な効果が得られるため、１０重量％超添加する
必要はない。粒度は０．５ｍｍ以下である。０．５ｍｍ
超では溶融性の低下が大きく、金属クロム，クロム成分
を含有する合金の効果が下がるため、０．５ｍｍ以下で
ある必要がある。The metallic chromium used in the present invention and the alloy containing a chromium component have a chromium content of 1 to 10% by weight. If it is less than 1% by weight, it will be oxidized to Cr 2 O 3 , and the proportion of Cr 2 O 3 that forms a solid solution in Al 2 O 3 will be small, and the effect of strengthening the sprayed body will be low. On the other hand, the addition of more than 10% by weight does not reduce the effect of strengthening the thermal spray material, but metal chromium and alloys containing chromium components are expensive, so the cost increases with increasing compounding ratio alone. .. Therefore, a sufficient effect can be obtained in the range of 1 to 10% by weight, so there is no need to add more than 10% by weight. The particle size is 0.5 mm or less. 0.5 mm
If it exceeds the above range, the meltability is greatly reduced, and the effect of metallic chromium or an alloy containing a chromium component is reduced.
【００２０】[0020]
【実施例】本発明の実施例を比較例と共に表１，２に示
す。EXAMPLES Examples of the present invention are shown in Tables 1 and 2 together with comparative examples.
【００２１】表に示す溶射材の粒度はいずれも３００μ
ｍ以下であり、プロパン−酸素の火炎を熱源として、溶
射ノズルから３００ｍｍ離れたマグクロレンガに対して
溶射したものの付着性，耐食性、それに接着性を調べた
ものである。The particle sizes of the thermal spray materials shown in the table are all 300 μm.
m or less, and the adhesion, corrosion resistance, and adhesiveness of what was sprayed on a magcro brick 300 mm away from the spray nozzle using a propane-oxygen flame as a heat source were investigated.
【００２２】材料はバインダーを添加して造粒等の操作
を行う必要はなく、単純に乾式混合するだけで充分であ
る。It is not necessary to add a binder to the materials for granulation or the like, and simple dry mixing is sufficient.
【００２３】表１にアルミナ−Ａｌ2 Ｏ3 ・ＭｇＯ系ス
ピネル系の耐火材料を示す。Table 1 shows alumina-Al 2 O 3 .MgO spinel refractory materials.
【００２４】[0024]
【表１】 リン酸塩又は珪酸塩を０．１〜５重量％添加し、金属ク
ロム又はクロム成分を含有する合金を１〜１０重量％添
加した本発明の実施例１〜５では、層状の大きな空隙が
なく、耐食性，熱間強度，付着性，接着性のいずれにお
いても優れている。[Table 1] In Examples 1 to 5 of the present invention in which 0.1 to 5% by weight of a phosphate or silicate and 1 to 10% by weight of metallic chromium or an alloy containing a chromium component are added, there is no layered large void. Excellent in corrosion resistance, hot strength, adhesiveness and adhesiveness.
【００２５】しかしながら、比較例１〜１３を見ても明
らかな通り、リン酸塩又は珪酸塩、金属クロム又はクロ
ム成分を含有する合金のいずれも添加されていない場合
は、層状の大きな空隙が生じ、耐食性，熱間強度，接着
性に劣っていることが判る。リン酸塩又は珪酸塩を添加
し、金属クロム又はクロム成分を含有する合金を添加し
ていない場合は、層状の大きな空隙がなく、接着性は良
好であるが、耐食性，熱間強度は劣っている。However, as is apparent from Comparative Examples 1 to 13, when none of the phosphate or silicate, the metallic chromium or the alloy containing the chromium component is added, large layered voids are formed. , It is inferior in corrosion resistance, hot strength and adhesiveness. When phosphate or silicate is added and metal chromium or alloy containing chromium component is not added, there are no large layered voids and adhesion is good, but corrosion resistance and hot strength are poor. There is.
【００２６】リン酸塩又は珪酸塩を添加せず、金属クロ
ム又はクロム成分を含有する合金を添加している場合
は、層状の大きな空隙が生じ、耐食性，熱間強度，接着
性に劣っていることがわかる。リン酸塩又は珪酸塩を添
加しても０．１重量％未満では添加効果がないため、層
状の大きな空隙が生じ、耐食性，熱間強度，接着性に劣
っており、５重量％超では、層状の大きな空隙は生じて
いないが、低融化の効果が大きくなり過ぎて、耐食性，
熱間強度が劣っている。リン酸塩又は珪酸塩を添加し、
金属クロム又はクロム成分を含有する合金を添加しても
１重量％未満では層状の大きな空隙は生じず、接着性は
良好であるが耐食性，熱間強度が劣っている。なお、ア
ルミナが１０重量％未満ではリン酸塩又は珪酸塩を０．
１〜５重量％添加し、金属クロム又はクロム成分を含有
する合金を１〜１０重量％添加しても溶融性が低すぎる
ため、層状の大きな空隙が生じ、耐食性，熱間強度，接
着性に劣っている。When the metal chromium or the alloy containing the chromium component is added without adding the phosphate or silicate, large layered voids are formed and the corrosion resistance, hot strength and adhesiveness are poor. I understand. Even if phosphate or silicate is added, if it is less than 0.1% by weight, there is no effect, so that large layered voids are formed and corrosion resistance, hot strength, and adhesiveness are poor, and if it exceeds 5% by weight, Large layered voids are not formed, but the effect of low melting becomes too large, and corrosion resistance,
The hot strength is inferior. Add phosphate or silicate,
Even if metallic chromium or an alloy containing a chromium component is added, if it is less than 1% by weight, layered large voids do not occur, and the adhesion is good but the corrosion resistance and hot strength are poor. If the alumina content is less than 10% by weight, the phosphate or silicate content of 0.
Addition of 1 to 5% by weight and addition of metal chromium or alloy containing chromium component to 1 to 10% by weight result in too low meltability, resulting in large layered voids, resulting in corrosion resistance, hot strength and adhesiveness. Inferior
【００２７】以下、表２にＡｌ2 Ｏ3 −Ｃｒ2 Ｏ3 系の
場合を示した。Table 2 below shows the case of Al 2 O 3 --Cr 2 O 3 system.
【００２８】[0028]
【表２】 この場合も、表１に示すアルミナ−Ａｌ2 Ｏ3 ・ＭｇＯ
系スピネル系の耐火材料と同様に、比較例と比較して、
層状の大きな空隙がなく、耐食性，熱間強度，付着性，
接着性いずれにおいても優れていることが分かる。[Table 2] Also in this case, alumina-Al 2 O 3 .MgO shown in Table 1
Similar to the spinel refractory material, compared to the comparative example,
No large layered voids, corrosion resistance, hot strength, adhesion,
It can be seen that the adhesiveness is excellent.
【００２９】[0029]
【発明の効果】本発明による火炎溶射材によって、以下
の効果を奏することができる。The flame sprayed material according to the present invention has the following effects.
【００３０】（１）格別従来の溶射条件を変更すること
なく、付着性，接着性，熱間強度，組織が向上した溶射
体を形成できる。(1) Particularly, it is possible to form a sprayed body having improved adhesiveness, adhesiveness, hot strength and structure without changing the conventional spraying conditions.
【００３１】（２）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，補修工数の低減
等に貢献する効果は極めて大きい。(2) The effect of forming the lining and improving the repair effect can be improved, and the effect of improving the operating rate of the industrial kiln and reducing the repair man-hour is extremely large.
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成４年４月７日[Submission date] April 7, 1992
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Name of item to be amended] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【特許請求の範囲】[Claims]
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００８[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００８】[0008]
【課題を解決するための手段】本発明は、アルミナを１
０重量％以上と、残部がリン酸塩及び珪酸塩から選ばれ
る１種以上を０．１〜５重量％と金属クロムとして０．
１〜１０重量％配合したＭｇＯ・Ａｌ2 Ｏ3 系スピネ
ル、クロム質原料、マグネシアから選ばれた１種以上の
耐火材料とからなることを特徴とする。SUMMARY OF THE INVENTION The present invention uses alumina 1
0% by weight or more, and the balance of 0.1 to 5% by weight of one or more kinds selected from phosphates and silicates, and metal chromium as 0.
It is characterized by comprising 1 to 10% by weight of MgO.Al 2 O 3 based spinel, one or more refractory materials selected from chromic raw materials and magnesia.
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１０[Correction target item name] 0010
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１０】金属クロムとしては、粒度が０．５ｍｍ以
下の金属クロム単味あるいはクロムの含有量が１重量％
以上、好ましくは１０重量％以上のＦｅ−Ｃｒ系，Ｓｉ
−Ｃｒ系等のクロムを含有する合金が使用できる。As metallic chromium, the metallic chromium having a grain size of 0.5 mm or less or the content of chromium is 1% by weight.
Above , preferably 10% by weight or more of Fe-Cr system, Si
An alloy containing chromium, such as -Cr system, can be used.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１５[Correction target item name] 0015
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１５】金属クロムはクロム質原料と異なり、酸化
する際に発熱するため、溶射体の溶融性を高める効果が
あり、そのために、Ｃｒが酸化されて生じたＣｒ2 Ｏ3
は充分にＡｌ2 Ｏ3 へ固溶する効率が高い。さらに、Ｃ
ｒが酸化されて生じたＣｒ2 Ｏ3 が溶鋼，スラグに濡れ
にくいために、耐食性を向上させ、Ａｌ2 Ｏ3 と完全固
溶してＡｌ2 Ｏ3 の融点を上げ、熱間強度及び耐食性も
向上する。Unlike chromium-based raw materials, metallic chromium generates heat during oxidation, and therefore has the effect of enhancing the meltability of the thermal spray material. Therefore, Cr 2 O 3 produced by oxidation of Cr is generated.
Has a high efficiency of sufficiently forming a solid solution in Al 2 O 3 . Furthermore, C
r is the Cr 2 O 3 produced by oxidation of molten steel, in order to not easily wetted by the slag, to improve the corrosion resistance, increase the melting point of Al 2 O 3 is completely solid solution with Al 2 O 3, hot strength and corrosion resistance Also improves.
【手続補正５】[Procedure Amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１９[Name of item to be corrected] 0019
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１９】また本発明に使用する金属クロム及びクロ
ム成分を含有する合金は、クロムの含有率は０．１〜１
０重量％とする。０．１重量％未満では酸化されてＣｒ
2 Ｏ3 となり、Ａｌ2 Ｏ3 へ固溶する際の固溶するＣｒ
2 Ｏ3 の割合が少なくなり溶射体を強化する効果が低く
なる。一方、１０重量％超添加しても溶射体の強化する
効果は下がることはないが、金属クロム及びクロム成分
を含有する合金は高価であるため、配合割合が多くなれ
ばそれだけでコストが大きくなる。従って、０．１〜１
０重量％の範囲で充分な効果が得られるため、１０重量
％超添加する必要はない。粒度は０．５ｍｍ以下であ
る。０．５ｍｍ超では溶融性の低下が大きく、金属クロ
ム，クロム成分を含有する合金の効果が下がるため、
０．５ｍｍ以下である必要がある。The metallic chromium used in the present invention and the alloy containing the chromium component have a chromium content of 0.1 to 1.
0% by weight. If it is less than 0.1 % by weight, it will be oxidized and Cr
It becomes 2 O 3 and becomes a solid solution Cr when it becomes a solid solution in Al 2 O 3 .
The proportion of 2 O 3 decreases and the effect of strengthening the thermal spray material decreases. On the other hand, the addition of more than 10% by weight does not reduce the effect of strengthening the thermal spray material, but metal chromium and alloys containing chromium components are expensive, so the cost increases with increasing compounding ratio alone. .. Therefore, 0.1 to 1
Since a sufficient effect can be obtained in the range of 0% by weight, it is not necessary to add more than 10% by weight. The particle size is 0.5 mm or less. If it exceeds 0.5 mm, the meltability is greatly reduced, and the effects of metallic chromium and alloys containing chromium components are reduced.
It must be 0.5 mm or less.
【手続補正６】[Procedure correction 6]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２１[Correction target item name] 0021
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２１】表に示す溶射材の粒度はいずれも３００μ
ｍ以下であり、プロパン−酸素の火炎を熱源として、溶
射バーナーから３００ｍｍ離れたマグクロレンガに対し
て溶射したものの付着性，耐食性、それに接着性を調べ
たものである。The particle sizes of the thermal spray materials shown in the table are all 300 μm.
It is less than m, and the adhesion, corrosion resistance, and adhesion of a flame-sprayed magcro brick 300 mm away from the thermal spray burner were examined using a propane-oxygen flame as a heat source.
【手続補正７】[Procedure Amendment 7]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２４[Correction target item name] 0024
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２４】[0024]
【表１】 リン酸塩又は珪酸塩を０．１〜５重量％添加し、金属ク
ロム又はクロム成分を含有する合金を１〜１０重量％添
加した本発明の実施例１〜６では、層状の大きな空隙が
なく、耐食性，熱間強度，付着性，接着性のいずれにお
いても優れている。[Table 1] In Examples 1 to 6 of the present invention in which 0.1 to 5% by weight of a phosphate or silicate and 1 to 10% by weight of metallic chromium or an alloy containing a chromium component are added, there are no layered large voids. Excellent in corrosion resistance, hot strength, adhesiveness and adhesiveness.
【手続補正８】[Procedure Amendment 8]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２５[Name of item to be corrected] 0025
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２５】しかしながら、比較例１〜１４を見ても明
らかな通り、リン酸塩又は珪酸塩、金属クロム又はクロ
ム成分を含有する合金のいずれも添加されていない場合
は、層状の大きな空隙が生じ、耐食性，熱間強度，接着
性に劣っていることが判る。リン酸塩又は珪酸塩を添加
し、金属クロム又はクロム成分を含有する合金を添加し
ていない場合は、層状の大きな空隙がなく、接着性は良
好であるが、耐食性，熱間強度は劣っている。However, as is apparent from Comparative Examples 1 to 14 , when no phosphate or silicate, metal chromium or an alloy containing a chromium component is added, large layered voids are formed. , It is inferior in corrosion resistance, hot strength and adhesiveness. When phosphate or silicate is added and metal chromium or alloy containing chromium component is not added, there are no large layered voids and adhesion is good, but corrosion resistance and hot strength are poor. There is.
【手続補正９】[Procedure Amendment 9]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２８[Correction target item name] 0028
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２８】[0028]
【表２】 この場合も、表１に示すアルミナ−Ａｌ2 Ｏ3 ・ＭｇＯ
系スピネル系の耐火材料と同様に、比較例と比較して、
層状の大きな空隙がなく、耐食性，熱間強度，付着性，
接着性いずれにおいても優れていることが分かる。[Table 2] Also in this case, alumina-Al 2 O 3 .MgO shown in Table 1
Similar to the spinel refractory material, compared to the comparative example,
No large layered voids, corrosion resistance, hot strength, adhesion,
It can be seen that the adhesiveness is excellent.
フロントページの続き (72)発明者 倉田 浩輔 福岡県北九州市戸畑区飛幡町１番１号 新 日本製鐵株式会社八幡製鐵所内 (72)発明者 松尾 三郎 福岡県北九州市戸畑区飛幡町１番１号 新 日本製鐵株式会社八幡製鐵所内Front page continuation (72) Kosuke Kurata, No. 1-1 Tobata-cho, Tobata-ku, Kitakyushu, Fukuoka Prefecture (72) Inside Yawata Works, Nippon Steel Co., Ltd. No. 1 inside Nippon Steel Co., Ltd. Yawata Works
Claims (1)
ン酸塩及び珪酸塩から選ばれる１種以上を０．１〜５重
量％と金属クロムを１〜１０重量％配合したＭｇＯ・Ａ
ｌ2 Ｏ3 系スピネル、クロム質原料、マグネシアから選
ばれた１種以上の耐火材料とからなる金属粉含有溶射
材。1. A MgO.A containing 10% by weight or more of alumina, 0.1 to 5% by weight of at least one selected from phosphate and silicate, and 1 to 10% by weight of metallic chromium.
A metal powder-containing thermal spray material comprising at least one refractory material selected from l 2 O 3 -based spinel, chromic raw material, and magnesia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3326203A JP2774405B2 (en) | 1991-12-10 | 1991-12-10 | Thermal spray material containing metal powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3326203A JP2774405B2 (en) | 1991-12-10 | 1991-12-10 | Thermal spray material containing metal powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05163561A true JPH05163561A (en) | 1993-06-29 |
| JP2774405B2 JP2774405B2 (en) | 1998-07-09 |
Family
ID=18185160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3326203A Expired - Fee Related JP2774405B2 (en) | 1991-12-10 | 1991-12-10 | Thermal spray material containing metal powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2774405B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004061137A1 (en) * | 2002-12-26 | 2004-07-22 | Nippon Steel Corporation | Alloyed-molten-zinc-plated steel sheet with excellent processability and high strength and process for producing the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57126964A (en) * | 1981-01-28 | 1982-08-06 | Nippon Steel Corp | Flame spray coating material |
| JPH01264976A (en) * | 1988-04-13 | 1989-10-23 | Nippon Steel Corp | Flame spraying material |
-
1991
- 1991-12-10 JP JP3326203A patent/JP2774405B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57126964A (en) * | 1981-01-28 | 1982-08-06 | Nippon Steel Corp | Flame spray coating material |
| JPH01264976A (en) * | 1988-04-13 | 1989-10-23 | Nippon Steel Corp | Flame spraying material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004061137A1 (en) * | 2002-12-26 | 2004-07-22 | Nippon Steel Corporation | Alloyed-molten-zinc-plated steel sheet with excellent processability and high strength and process for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2774405B2 (en) | 1998-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NL7906470A (en) | LANCE PIPE FOR REFINING AND REFINING METHOD OF MELTED METAL. | |
| JP2002018595A (en) | Single-sided submerged arc welding method for low temperature steel | |
| CN102085603B (en) | Fluorine-base type sintered flux used for reducing sulfur and phosphorus contents of welding joint and used in submerged arc hardfacing | |
| JP4672177B2 (en) | Submerged arc welding method for duplex stainless steel | |
| AU2006225236B2 (en) | Sintered flux for submerged arc welding | |
| JPH05163561A (en) | Thermal spraying member containing metal powder | |
| JP2714324B2 (en) | Chromium spray material | |
| JPH05148610A (en) | Thermal spraying material | |
| JP3009816B2 (en) | Oxidation-resistant non-oxide spray material and its mixture | |
| JPH0588289B2 (en) | ||
| JP2549035B2 (en) | Fireproof powder for thermal spraying | |
| JPH0365569A (en) | Repairing material for hot gunning | |
| JPH0261436B2 (en) | ||
| JPH0365556A (en) | Carbon-containing refractory | |
| JPH10212169A (en) | Monolithic refractory for spraying | |
| JPS5934674B2 (en) | Basic refractory composition | |
| JPH0539557A (en) | Thermal spray material | |
| JP3018057B2 (en) | MgO-ZrO2-SiO2-based thermal spray material | |
| JPS61186190A (en) | Composite filler rod for weld overlay | |
| JPH062101A (en) | Alumina-zircon thermal spray material containing metal powder | |
| JPH0733538A (en) | Magnesia / alumina thermal spray material | |
| JPH0323097A (en) | Submerged arc welding wire and flux for weather resistant refractor steel | |
| JPH0437030B2 (en) | ||
| JP3018056B2 (en) | CaO-SiO2 spray material | |
| JPH06219855A (en) | Metallic powder containing alumina-mgo-al2o3 spinel based thermal spraying material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19980320 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090424 Year of fee payment: 11 |
|
| LAPS | Cancellation because of no payment of annual fees |