JP3470209B2 - Alkaline salt bath immersion roll - Google Patents
Alkaline salt bath immersion rollInfo
- Publication number
- JP3470209B2 JP3470209B2 JP12738895A JP12738895A JP3470209B2 JP 3470209 B2 JP3470209 B2 JP 3470209B2 JP 12738895 A JP12738895 A JP 12738895A JP 12738895 A JP12738895 A JP 12738895A JP 3470209 B2 JP3470209 B2 JP 3470209B2
- Authority
- JP
- Japan
- Prior art keywords
- roll
- coating
- salt bath
- thickness
- present
- 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.)
- Expired - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
- C23C28/322—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
- C23C28/321—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal alloy layer
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
- C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
- C23C28/3455—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer with a refractory ceramic layer, e.g. refractory metal oxide, ZrO2, rare earth oxides or a thermal barrier system comprising at least one refractory oxide layer
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Coating By Spraying Or Casting (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、薄板用連続焼鈍酸洗ラ
インの酸洗前処理としてのアルカリソルトバスに使用す
る浸漬ロールに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dipping roll used in an alkaline salt bath as a pre-pickling treatment for a continuous annealing pickling line for thin plates.
【０００２】[0002]
【従来の技術】従来、ステンレス鋼ストリップ又はチタ
ンストリップ等の薄板連続焼鈍酸洗ラインにおいて、す
でに所定の厚さにまで圧延されたステンレス鋼ストリッ
プ又はチタンストリップは、焼鈍炉により焼鈍され、ソ
ルトバスでアルカリ洗浄の上、さらに酸洗槽で洗浄が行
なわれる。ソルトバスには水酸化ナトリウムを主成分と
する溶融塩を満たし、ステンレス鋼ストリップ又はチタ
ンストリップを浸漬ロールにより浸漬する。この浸漬ロ
ールには一般にダクタイル鋳鉄等の鋳鉄ロールが使用さ
れている。2. Description of the Related Art Conventionally, in a continuous annealing pickling line for thin plates such as stainless steel strips or titanium strips, stainless steel strips or titanium strips that have already been rolled to a predetermined thickness are annealed in an annealing furnace and then salt bathed. After cleaning with alkali, cleaning is performed in the pickling tank. A salt bath is filled with a molten salt containing sodium hydroxide as a main component, and a stainless steel strip or a titanium strip is dipped by a dipping roll. Cast iron rolls such as ductile cast iron are generally used as the dipping rolls.
【０００３】[0003]
【発明が解決しようとする課題】そのため、ステンレス
鋼ストリップ又はチタンストリップを通板した場合に、
浸漬ロールの材質とは異種金属であるステンレス鋼スト
リップ又はチタンストリップとが溶融塩を介することに
よって局部電池が形成される。Therefore, when a stainless steel strip or a titanium strip is passed through,
A local battery is formed by a molten salt interposing a stainless steel strip or a titanium strip which is a metal different from the material of the dipping roll.
【０００４】したがって、ステンレス鋼ストリップ又は
チタンストリップと浸漬ロールが溶融塩中で接触する
際、スパーク現象が発生しステンレス鋼ストリップ又は
チタンストリップに疵を生ずる。この疵はストリップの
裏側までも届くことがあり、これにより製品の品質を著
しく損ねるため、高価なステンレス鋼ストリップ又はチ
タンストリップの歩留まりを低下させる等極めて悪影響
が大きい。また、溶融塩は温度が５００℃前後と高く、
高温、高濃度のアルカリ浴であるため極めて腐食性が強
い。従って、溶融塩中に浸漬している鋳鉄ロールは溶融
塩による腐食が激しく、ロール寿命が短い。Therefore, when the stainless steel strip or the titanium strip comes into contact with the dipping roll in the molten salt, a spark phenomenon occurs and the stainless steel strip or the titanium strip is flawed. This flaw may reach the back side of the strip, which significantly impairs the quality of the product, and thus has a very bad effect such as a reduction in the yield of expensive stainless steel strip or titanium strip. In addition, the temperature of the molten salt is as high as around 500 ° C,
Since it is a high temperature, high concentration alkaline bath, it is extremely corrosive. Therefore, the cast iron roll immersed in the molten salt is severely corroded by the molten salt and has a short roll life.
【０００５】以上の問題点を解決するために、設備的な
電気絶縁対策やロール材質の検討が種々試みられた。し
かし、スパーク疵の発生は、ステンレス鋼ストリップ又
はチタンストリップと鋳鉄ロールとの間の電池作用によ
り発生するものであるため、有効な対策は見いだし得な
かった。本発明は、前記従来の問題点を解決し、ロール
表面にセラミックスコーティングによる電気絶縁層を形
成した、アルカリソルトバス浸漬ロールを提供すること
を目的としている。In order to solve the above-mentioned problems, various attempts have been made to examine electric insulation measures for equipment and roll materials. However, since the occurrence of spark defects is caused by the battery action between the stainless steel strip or titanium strip and the cast iron roll, an effective countermeasure cannot be found. SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional problems and provide an alkali salt bath dip roll having an electric insulation layer formed by a ceramic coating on the roll surface.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、本発明者等は種々研究を重ねた結果、ロール表面に
セラミックスコーティングによる電気絶縁層を形成する
こと、さらにセラミックスの下地層として溶融塩に対す
る耐食性に優れたＮｉ系材料を使用することによってセ
ラミックスの耐剥離性を改善し、ロール寿命も向上でき
ることを知見し、本発明を完成するに至った。In order to achieve the above object, the inventors of the present invention have conducted various researches, and as a result, formed an electric insulating layer by a ceramic coating on the surface of a roll, and a molten salt as a ceramic underlayer. The inventors have found that the use of a Ni-based material having excellent corrosion resistance with respect to 1) can improve the peeling resistance of ceramics and the roll life, and have completed the present invention.
【０００７】すなわち前記知見に基づいてなされた本発
明は、鉄系ロールの胴部表面に下地層として、厚さ５０
μｍ以上の純Ｎｉめっき被覆、又はＮｉ７０重量％以上
のＮｉ合金のめっきあるいは溶射被覆と、その上に、３
５重量％以下のＹ2Ｏ3、ＣａＯ、ＣｅＯ2のいずれか１
種を添加した安定化ＺｒＯ2被覆を５０〜５００μｍの
厚さに形成したことを特徴とするアルカリソルトバス浸
漬ロールを要旨とするものであり、また、ＺｒＯ2を主
成分として生成する封孔剤で含浸封孔処理した安定化Ｚ
ｒＯ2被覆を形成したアルカリソルトバス浸漬ロールも
本発明の要旨である。That is, according to the present invention made on the basis of the above-mentioned knowledge, a thickness of 50 is provided as a base layer on the surface of the body of an iron-based roll.
Pure Ni plating coating of μm or more, or Ni alloy plating or thermal spray coating of 70% by weight or more of Ni, and 3 thereon
One of Y 2 O 3 , CaO, and CeO 2 of 5% by weight or less
A stabilized ZrO 2 coating containing a seed is formed to a thickness of 50 to 500 μm, which is a feature of an alkaline salt bath dipping roll, and a sealing agent which contains ZrO 2 as a main component. Stabilized Z that has been impregnated and sealed with
Alkaline salt bath dip rolls with a rO 2 coating are also a subject matter of the present invention.
【０００８】[0008]
【作用】本発明の構成と作用を説明する。本発明におい
ては、アルカリソルトバス浸漬ロール母材として通常使
用されている鋳鉄はもちろん、炭素鋼、低合金鋼等も使
用される。ロールとストリップ間におけるスパークの発
生を防止するため、電気絶縁材として、高温、高濃度の
アルカリに対する耐食性に優れた酸化物系セラミックス
をロール表面に被覆する。セラミックス材料には、３５
重量％以下のＹ2Ｏ3、ＣａＯ、ＣｅＯ2のいずれか１種
の安定化剤を添加した安定化ジルコニアが使用される。The structure and operation of the present invention will be described. In the present invention, not only cast iron which is usually used as a base material for an alkali salt bath dipping roll, but also carbon steel, low alloy steel and the like are used. In order to prevent the generation of sparks between the roll and the strip, the roll surface is coated with an oxide-based ceramic having excellent corrosion resistance to high temperature and high concentration alkali as an electric insulating material. 35 for ceramic materials
Stabilized zirconia added with a stabilizer of less than 1% by weight of any one of Y 2 O 3 , CaO and CeO 2 is used.
【０００９】セラミックスが電気絶縁性を有すること及
び優れた耐食性を有することは一般的に知られている
が、これのみでは本発明ロールに十分な条件とはいえな
い。すなわち、セラミックス皮膜には細かい気孔が存在
するために、この気孔を通して溶融塩が侵入して母材に
達し、母材が腐食して被覆されているセラミックス皮膜
が剥離する。これを防止するため、アルカリ溶融塩に対
する耐食性に優れた純Ｎｉめっき被覆又はＮｉ７０重量
％以上のＮｉ合金めっきあるいは溶射被覆を下地として
ロール母材に施し、これにより母材の腐食を防ぐと共
に、母材表面からセラミックス皮膜の剥離を阻止する。
また、溶射したセラミック皮膜内へのアルカリ溶融塩浸
透を防ぐために、ＺｒＯ2を主成分として生成する封孔
剤で含浸封孔処理することも、本発明の有効手段であ
る。It is generally known that ceramics have electrical insulation and excellent corrosion resistance, but this alone is not sufficient conditions for the roll of the present invention. That is, since fine pores are present in the ceramic coating, the molten salt penetrates through the pores to reach the base material, and the base material corrodes and the coated ceramic coating is peeled off. In order to prevent this, a pure Ni plating coating excellent in corrosion resistance against molten alkali salt or a Ni alloy plating of 70% by weight or more of Ni or a thermal spray coating is applied to the roll base material as a base, thereby preventing corrosion of the base material and Prevents peeling of the ceramic film from the material surface.
Further, in order to prevent the alkali molten salt from penetrating into the sprayed ceramic coating, it is also an effective means of the present invention to carry out the impregnation and sealing treatment with a sealing agent containing ZrO 2 as a main component.
【００１０】本発明では、下地層に純Ｎｉ又はＮｉ７０
重量％以上のＮｉ合金が使用されるが、その被覆には、
経済性を考慮すると溶射又はめっきが好ましい。鋳鉄以
外のロール母材では肉盛溶接も可能である。下地層の厚
さはアルカリ溶融塩に対する耐食性を考慮すると５０μ
ｍ以上必要である。めっきの場合、セラミックス被覆の
ための前処理としてブラスト処理による下地層の減肉を
考慮すると１００μｍ以上必要である。上限はあまり厳
密でないが通常１００〜２００μｍで十分である。肉盛
溶接の場合は数ｍｍ以下でよい。In the present invention, pure Ni or Ni70 is used as the underlayer.
Ni alloy of more than weight% is used.
Thermal spraying or plating is preferable in consideration of economy. Overlay welding is also possible with roll base materials other than cast iron. The thickness of the underlayer is 50μ considering corrosion resistance against molten alkali salt.
m or more is required. In the case of plating, it is required to be 100 μm or more in consideration of the thinning of the underlayer due to the blasting as a pretreatment for coating the ceramics. The upper limit is not so strict, but 100 to 200 μm is usually sufficient. In the case of overlay welding, it may be several mm or less.
【００１１】本発明ロールに被覆されるセラミックス皮
膜材としては、３５重量％以下のＹ2Ｏ3、ＣａＯ、Ｃｅ
Ｏ2のいずれか１種の安定化剤を添加した安定化ジルコ
ニアが使用される。これは、ジルコニアが電気絶縁性を
有するだけでなく、化学的に安定でアルカリ溶融塩に対
する耐食性に優れ、さらにセラミックス中では熱膨張係
数が大きく、耐熱衝撃性にも優れているからである。As the ceramic coating material coated on the roll of the present invention, 35% by weight or less of Y 2 O 3 , CaO, and Ce are used.
Stabilized zirconia with the addition of any one stabilizer of O 2 is used. This is because zirconia not only has electrical insulation, but is chemically stable and has excellent corrosion resistance against molten alkali salts, and has a large coefficient of thermal expansion in ceramics and excellent thermal shock resistance.
【００１２】ジルコニアセラミックスの被覆は、一般的
にはプラズマ溶射による方法が好ましいが、その他の手
段でも強固な皮膜形成ができるものであれば差し支えな
い。皮膜厚みは電気絶縁性、耐食性、耐摩耗性の点より
５０μｍ以上必要である。上限は、皮膜の耐剥離性の点
から５００μｍである。ただし、通常は経済性を考慮し
て１００〜２００μｍが好ましい。In general, the zirconia ceramic coating is preferably formed by plasma spraying, but other means may be used as long as a strong coating can be formed. The film thickness needs to be 50 μm or more from the viewpoint of electrical insulation, corrosion resistance, and wear resistance. The upper limit is 500 μm from the viewpoint of peeling resistance of the film. However, in consideration of economy, it is usually preferable that the thickness is 100 to 200 μm.
【００１３】ロール母材に被覆される下地材及び下地材
＋セラミックス＋封孔処理剤の、高温、高濃度のアルカ
リ溶融塩中における耐食性を調査するため、浸漬試験材
として鋳鉄製平板（１００×５０×１０ｍｍ）の片面に
溶射又はメッキにより皮膜を形成し、実機アルカリ溶融
塩槽（４８０℃）中に５００時間浸漬後、皮膜の腐食性
と密着性とを比較調査した。表１に下地材の浸漬試験結
果を、表２に下地材＋セラミックス＋封孔処理剤の浸漬
試験結果を示す。In order to investigate the corrosion resistance of the base material and the base material + ceramics + sealing treatment agent coated on the roll base material in high temperature and high concentration alkali molten salt, a cast iron flat plate (100 × A film was formed on one surface of 50 × 10 mm) by thermal spraying or plating, and after immersion in an actual molten alkali salt tank (480 ° C.) for 500 hours, a comparative study was performed on the corrosiveness and adhesion of the film. Table 1 shows the results of the immersion test of the base material, and Table 2 shows the results of the immersion test of the base material + ceramics + sealing treatment agent.
【００１４】[0014]
【表１】 [Table 1]
【００１５】[0015]
【表２】 [Table 2]
【００１６】アルカリに対する耐食性が良好なＮｉ系材
料について比較調査したが、表１にみられるとおり、本
発明例（Ｎｏ．１〜４）はアルカリ溶融塩に対しいずれ
も良好な耐食性を示している。これに対して、比較例Ｎ
ｏ．５は本発明例よりも腐食が大きく、比較例Ｎｏ．６
は皮膜が損傷して母材が露出している。また表２によれ
ば、本発明例はいずれも皮膜の割れ、剥離はなく、表面
の肌荒れ、腐食も殆どみられない。しかるに比較例６
は、皮膜割れはないものの表面の肌荒れ及び腐食が大き
く、比較例７、８は皮膜割れを生じている。また比較例
９は皮膜が剥離して残存していない。A comparative investigation was conducted on Ni-based materials having good alkali corrosion resistance. As shown in Table 1, the invention examples (Nos. 1 to 4) all show good corrosion resistance to alkali molten salts. . On the other hand, Comparative Example N
o. No. 5 is more corroded than the present invention, and Comparative Example No. 6
The coating is damaged and the base metal is exposed. Further, according to Table 2, in any of the examples of the present invention, there is no cracking or peeling of the coating, and the surface is not roughened or corroded. However, Comparative Example 6
Although there is no film cracking, surface roughening and corrosion are large, and Comparative Examples 7 and 8 have film cracking. In Comparative Example 9, the film peeled off and did not remain.
【００１７】[0017]
【実施例】本発明を実施例により具体的に説明するが、
これによって本発明が限定されることはない。
実施例
胴の直径７５０ｍｍ、胴長１５００ｍｍのダクタイル鋳
鉄製ロール母材に、本発明を適用した。ロール表面を研
磨加工し、グリッドブラストによる粗面化処理を行なっ
た後、下地材Ｎｉ−２０Ｃｒ合金をプラズマ溶射により
１５０μｍ厚さ溶射した。前記下地材層の上にセラミッ
クスＺｒＯ2−８Ｙ2Ｏ3を３００μｍ厚さ溶射した。こ
の溶射皮膜をダイヤモンド砥石により研摩し、セラミッ
クス皮膜厚さを２００μｍとした。研摩仕上げ加工後、
ＺｒＯ2を主成分とする封孔剤（６％Ｚｒアルコキシド
アルコール溶液）を塗布含浸させ、封孔のため、酸化性
雰囲気中４１０℃で焼成して封孔成分であるＺｒＯ2を
皮膜内に生成させた。EXAMPLES The present invention will be specifically described with reference to Examples.
This does not limit the invention. The present invention was applied to a roll base material made of ductile cast iron having a diameter of 750 mm and a body length of 1500 mm. After the surface of the roll was polished and roughened by grid blasting, a Ni-20Cr alloy base material was sprayed by plasma spraying to a thickness of 150 μm. Ceramics ZrO 2 -8Y 2 O 3 was thermally sprayed to a thickness of 300 μm on the base material layer. This sprayed coating was polished with a diamond grindstone to a ceramic coating thickness of 200 μm. After polishing finish processing,
A sealing agent containing ZrO 2 as a main component (6% Zr alkoxide alcohol solution) is coated and impregnated, and for sealing, baked at 410 ° C. in an oxidizing atmosphere to generate ZrO 2 as a sealing component in the film. Let
【００１８】このロールを薄板連続焼鈍酸洗ラインのソ
ルトバスの浸漬ロールとして使用した。チタンストリッ
プを通板したところ、スパーク疵の発生は全くなく、ア
ルカリ溶融塩による腐食も殆ど生じないため、１ヵ月使
用してもロールの損傷は認められなかった。これに対
し、従来使用されていたダクタイル鋳鉄製ロールでは、
チタンストリップを通板したところ、ロールとチタンス
トリップとの間で発生するスパークによるスパーク疵及
びアルカリ溶融塩による腐食のために１０日間程度でロ
ール交換が必要となり、短いときには３日間でロール交
換をしなければならない場合もあった。This roll was used as a dipping roll for a salt bath in a thin plate continuous annealing pickling line. When the titanium strip was passed through the plate, no spark flaws were generated, and almost no corrosion due to the alkali molten salt occurred. Therefore, no damage was found on the roll even after one month of use. On the other hand, with the conventionally used ductile cast iron roll,
When the titanium strip was passed through the roll, it was necessary to replace the roll in about 10 days due to spark defects caused by sparks generated between the roll and the titanium strip and corrosion due to the alkali molten salt. Sometimes it had to.
【００１９】[0019]
【発明の効果】本発明は、以上説明したように構成され
ているから、表面疵の無い高品質のステンレス鋼ストリ
ップ又はチタンストリップを生産することができ、ロー
ル寿命も向上されるため、工業的価値が大きく産業上極
めて有用である。Since the present invention is constructed as described above, it is possible to produce high-quality stainless steel strips or titanium strips without surface flaws, and the roll life is also improved. It has great value and is extremely useful in industry.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 日向寺 幸夫 茨城県鹿島郡鹿島町大字光３番地 住友 金属工業株式会社 鹿島製鉄所内 (72)発明者 川添 勝利 東京都中央区八重洲一丁目３番８号 日 鉄ハード株式会社内 (72)発明者 北川 公一 東京都中央区八重洲一丁目３番８号 日 鉄ハード株式会社内 (56)参考文献 特開 昭63−57789（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C23C 28/00 C23C 4/10 F16C 13/00 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yukio Hyugaji, 3rd, Hikari, Kashima-machi, Kashima-gun, Kashima-gun, Ibaraki Sumitomo Metal Industries, Ltd. (72) Inventor, Katsura Kawazoe 1-3-8 Yaesu, Chuo-ku, Tokyo No. Nittetsu Hard Co., Ltd. (72) Inventor Koichi Kitagawa No. 3-8 Yaesu, Chuo-ku, Tokyo Within Nittetsu Hard Co., Ltd. (56) Reference JP-A-63-57789 (JP, A) (58) ) Fields surveyed (Int.Cl. 7 , DB name) C23C 28/00 C23C 4/10 F16C 13/00
Claims (2)
厚さ５０μｍ以上の純Ｎｉめっき被覆、又はＮｉ７０重
量％以上のＮｉ合金のめっきあるいは溶射被覆と、その
上に、３５重量％以下のＹ2Ｏ3、ＣａＯ、ＣｅＯ2のい
ずれか１種を添加した安定化ＺｒＯ2被覆を５０〜５０
０μｍの厚さに形成したことを特徴とするアルカリソル
トバス浸漬ロール。1. A base layer on the surface of the body of an iron-based roll,
Pure Ni plating coating with a thickness of 50 μm or more, or Ni alloy plating or thermal spray coating with 70% by weight or more of Ni, and any one of Y 2 O 3 , CaO and CeO 2 of 35% by weight or less is added thereon. A stabilized ZrO 2 coating of 50-50
An alkali salt bath dipping roll characterized by being formed to a thickness of 0 μm.
で含浸封孔処理した安定化ＺｒＯ2被覆である請求項１
記載のアルカリソルトバス浸漬ロール。2. A stabilized ZrO 2 coating impregnated with a sealing agent containing ZrO 2 as a main component for sealing treatment.
Alkali salt bath immersion roll as described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12738895A JP3470209B2 (en) | 1995-04-28 | 1995-04-28 | Alkaline salt bath immersion roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12738895A JP3470209B2 (en) | 1995-04-28 | 1995-04-28 | Alkaline salt bath immersion roll |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08296061A JPH08296061A (en) | 1996-11-12 |
| JP3470209B2 true JP3470209B2 (en) | 2003-11-25 |
Family
ID=14958766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12738895A Expired - Fee Related JP3470209B2 (en) | 1995-04-28 | 1995-04-28 | Alkaline salt bath immersion roll |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3470209B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6270318B1 (en) * | 1999-12-20 | 2001-08-07 | United Technologies Corporation | Article having corrosion resistant coating |
| JP4523142B2 (en) * | 2000-10-31 | 2010-08-11 | 第一高周波工業株式会社 | Molten salt bath roller |
| JP2013067836A (en) * | 2011-09-22 | 2013-04-18 | Nisshin Steel Co Ltd | Corrosion resistant roll and method for manufacturing the same |
| JP6324785B2 (en) * | 2014-03-26 | 2018-05-16 | 株式会社栗本鐵工所 | Formation method of thermal spray base |
-
1995
- 1995-04-28 JP JP12738895A patent/JP3470209B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08296061A (en) | 1996-11-12 |
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