JPH08199329A - Immersed member for hot dip galvanizing bath - Google Patents
Immersed member for hot dip galvanizing bathInfo
- Publication number
- JPH08199329A JPH08199329A JP7022257A JP2225795A JPH08199329A JP H08199329 A JPH08199329 A JP H08199329A JP 7022257 A JP7022257 A JP 7022257A JP 2225795 A JP2225795 A JP 2225795A JP H08199329 A JPH08199329 A JP H08199329A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- oxide ceramics
- ceramics
- cermet
- intermetallic compound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Coating With Molten Metal (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、亜鉛めっき浴中に浸漬
して使用される部材、より詳しくは亜鉛めっき鋼板の製
造設備にあって、亜鉛あるいは亜鉛−アルミニウム合金
めっき浴中で用いられるシンクロール、サポートロール
等の部材に関する。すなわち、これらの部材の表面に溶
融亜鉛と反応しにくく、ぬれにくいセラミックスを溶射
するに際し、下層コーティングとして溶融亜鉛合金の侵
食を防止し、セラミックスと金属との接合を増強するこ
とのできる溶射材料を溶射して２層構造の皮膜が形成さ
れた浸漬部材とすることを特徴とする。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a member used by being immersed in a galvanizing bath, more specifically, a facility for manufacturing a galvanized steel sheet, which is a sink used in a zinc or zinc-aluminum alloy plating bath. Members such as rolls and support rolls. That is, when spraying a ceramic that does not easily react with molten zinc on the surface of these members and is hard to wet, it is possible to prevent corrosion of the molten zinc alloy as a lower layer coating and to improve the bonding between the ceramic and the metal. It is characterized in that it is an immersion member on which a coating having a two-layer structure is formed by thermal spraying.
【０００２】[0002]
【従来の技術】亜鉛めっき処理鋼板の製造法としては、
主として連続溶融亜鉛めっき法が採用されている。連続
溶融亜鉛めっき法の主要な工程は次の通りである。すな
わち、表面を清浄化された鋼帯がアルミニウムを０．１
〜０．２％含有する溶融亜鉛合金槽中に浸漬され、浴中
のシンクロールによって進行方向が転換され、サポート
ロール、ワイピングノズルなどを経由し、加熱炉に送ら
れて合金化処理された後、常温まで冷却される。2. Description of the Related Art As a method of manufacturing a galvanized steel sheet,
The continuous hot dip galvanizing method is mainly used. The main steps of the continuous hot dip galvanizing method are as follows. In other words, the steel strip whose surface has been cleaned contains 0.1% aluminum.
After being immersed in a molten zinc alloy tank containing ~ 0.2%, the direction of travel is changed by a sink roll in the bath, and sent to a heating furnace via a support roll, wiping nozzle, etc., and then alloyed. , Cooled to room temperature.
【０００３】上記連続溶融亜鉛めっきの工程において、
溶融亜鉛が浸漬部材を侵食し、また、アルミニウムを含
有する溶融亜鉛中を鋼帯が通過する際、鋼帯から溶融亜
鉛へ鉄が溶出し、シンクロール表面にＦｅＡｌあるいは
ＦｅＺｎ系の固相金属間化合物（付着金属層あるいはド
ロスと呼ぶ）を形成する。この付着合金層は硬く強固に
付着しているため、特に高級めっき鋼板において鋼帯の
表面品質を低下させることになる。In the above continuous hot dip galvanizing process,
When molten zinc erodes the submerged member, and when the steel strip passes through the molten zinc containing aluminum, iron is eluted from the steel strip to the molten zinc, and FeAl or FeZn-based solid phase metal A compound (called a deposited metal layer or dross) is formed. Since this adhered alloy layer adheres hard and strongly, it deteriorates the surface quality of the steel strip particularly in the high-grade plated steel sheet.
【０００４】上記浸漬部材の亜鉛による侵食の防止およ
び同部材への亜鉛合金の付着防止に関して、シンクロー
ルやサポートロールの表面に特定の材料を溶射すること
が提案されている。表面溶射の役割は、一つは亜鉛合金
による部材表面の侵食防止であり、もう一つは該部材表
面における付着合金層の形成（ドロス付着）を防止する
ことである。例えば、特開平４−１１６１４７号公報で
はＣｒ3 Ｃ2 ，ＷＣ，ＴｉＣ，ＴｉＢ2 ，ＣｒＢ2 ，Ｚ
ｒＢ2 などの非酸化物セラミックスとＣｏ，Ｃｒなどを
混合したサーメット溶射材料が、また特開平５−７８８
０１号公報では部材表面にＡｌを２２％以上含むＦｅ−
Ａｌ合金層を形成するための溶射材料が、さらに特開平
５−１０６０１１号公報ではＡｌ2 Ｏ3 −ＴｉＯ2 擬２
元系金属酸化物の溶射材料がそれぞれ提案されている。In order to prevent corrosion of the above-mentioned immersion member by zinc and prevent adhesion of a zinc alloy to the same member, it has been proposed to spray a specific material onto the surface of the sink roll or the support roll. The role of surface thermal spraying is to prevent the corrosion of the surface of the member by the zinc alloy, and to prevent the formation of the adhesion alloy layer (dross adhesion) on the surface of the member. For example, Cr 3 C 2 in JP-A 4-116147 discloses, WC, TiC, TiB 2, CrB 2, Z
A cermet sprayed material in which a non-oxide ceramic such as rB 2 and Co, Cr or the like is mixed is also disclosed in JP-A-5-788.
No. 01 discloses Fe-containing 22% or more of Al on the surface of the member.
Further, a thermal spray material for forming an Al alloy layer is disclosed in Japanese Patent Laid-Open No. 5-106101, Al 2 O 3 —TiO 2 pseudo-2.
A thermal spray material of an original metal oxide has been proposed.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、酸化物
セラミックスは、例えば特開平５−１０６０１１に開示
の溶射材のように、耐溶融亜鉛侵食性、耐亜鉛合金付着
性とも優れるが、機械強度が低いため、実ロールに溶射
して使用すると、溶射皮膜にクラックや剥離が生ずるこ
とが多く、保護皮膜として不適当である。However, oxide ceramics are excellent in molten zinc erosion resistance and zinc alloy adhesion resistance as in the thermal spray material disclosed in JP-A-5-106011, but have low mechanical strength. Therefore, when sprayed and used on an actual roll, cracks and peeling often occur in the sprayed coating, which is unsuitable as a protective coating.
【０００６】また、非酸化物セラミックスは酸化物セラ
ミックスと同様に密着性と機械強度に乏しく、これの改
善のために金属成分の添加が不可欠となる。例えば特開
平４−１１６１４７の溶射材料はＣｏ、Ｃｒなどを混合
したサーメット材料であるが、亜鉛合金の侵食があり、
表面にドロスの付着がある。Further, non-oxide ceramics are poor in adhesion and mechanical strength like oxide ceramics, and addition of a metal component is indispensable for improving the adhesion and mechanical strength. For example, the thermal spray material of JP-A-4-116147 is a cermet material in which Co, Cr, etc. are mixed, but there is erosion of the zinc alloy,
There is adhesion of dross on the surface.
【０００７】また、特開平５−７８８０１では、Ｆｅ−
Ａｌはドロスとほぼ同じ成分でドロスの付着が著しく、
また特開平５−３３１１３では、非酸化性セラミックス
にＦｅ−Ａｌを０．１〜２０％添加した溶射材料が示さ
れており、Ａｌを添加すると亜鉛の拡散速度が低下し、
Ａｌ添加効果が大きいと強調しているが、一方酸化物セ
ラミックスは金属とのマッチングが悪いので、酸化物セ
ラミックスにＡｌを添加することによりもたらされる効
果は乏しいと指摘している。In Japanese Patent Laid-Open No. 5-78801, Fe-
Al has almost the same composition as dross, and the adhesion of dross is remarkable,
Further, JP-A-5-33113 discloses a thermal spray material in which 0.1 to 20% of Fe-Al is added to non-oxidizing ceramics. When Al is added, the diffusion rate of zinc decreases,
It is emphasized that the Al addition effect is large, but on the other hand, since the oxide ceramics have a poor matching with the metal, it is pointed out that the effect provided by adding Al to the oxide ceramics is poor.
【０００８】上記の溶融亜鉛めっき関連設備用溶射皮膜
の性能要求としては、（１）耐溶融亜鉛合金侵食性、
（２）耐ドロス付着性、（３）緻密性および（４）機械
強度である。The performance requirements of the above-mentioned thermal spray coating for hot dip galvanizing-related equipment include (1) hot-dip zinc alloy erosion resistance,
(2) Dross resistance, (3) denseness, and (4) mechanical strength.
【０００９】セラミックスは上記の（１）、（２）項の
特性を備える材料であるが、セラミックスは靭性が小さ
く、金属溶射皮膜に比べて気孔率が大きく、またセラミ
ックスは基材金属表面との界面における拡散が容易では
なく、接合力が小さく、金属溶射皮膜に比べて使用中に
皮膜の剥離の恐れがあるので、前述のような提案がなさ
れているが、前記溶射皮膜の性能要件を充分満足する溶
射材料が開発されていない。Ceramics are materials having the above-mentioned characteristics (1) and (2), but ceramics have a low toughness and a large porosity as compared with a metal spray coating. Since the diffusion at the interface is not easy, the bonding force is small, and the coating may peel off during use as compared with the metal spray coating, the proposal as described above has been made, but the performance requirements of the spray coating are sufficient. No satisfactory thermal spray material has been developed.
【００１０】したがって本発明の目的は、部材表面に形
成された溶射皮膜を有し、該皮膜が耐溶融亜鉛合金侵食
性、耐ドロス付着性ともに優れていて、かつ緻密性およ
び十分な機械強度をもち耐剥離性を備えたものであるよ
うな亜鉛めっき浴用浸漬部材を提供することにある。Therefore, an object of the present invention is to have a thermal spray coating formed on the surface of a member, the coating being excellent in both molten zinc alloy erosion resistance and dross adhesion resistance, and being dense and having sufficient mechanical strength. It is an object of the present invention to provide a dipping member for a galvanizing bath, which has mochi peel resistance.
【００１１】[0011]
【課題を解決するための手段】本発明者は上記目的を達
成すべく研究を進めた結果、セラミックス系溶射皮膜の
長所を利用し、その欠点は２層コーティングを行うこと
により、すなわち金属部材表面に（Ｆｅx Ａｌy 金属間
化合物＋酸化物セラミックス）サーメットを溶射し、そ
の上にさらにサーメット中のセラミックスと同種類のセ
ラミックスを溶射するようにすれば除くことができ、耐
溶融亜鉛合金侵食性および耐亜鉛合金付着性も優れると
共に耐剥離性にも優れた溶射皮膜を持つ浸漬用部材が得
られることを見いだし本発明に到達した。コーティング
の厚みは下層８０〜１２０μｍ、上層４０〜８０μｍが
適切である。As a result of researches aimed at achieving the above object, the present inventor has utilized the advantages of a ceramic-based thermal spray coating, and has the disadvantage of performing two-layer coating, that is, the surface of a metal member. (Fe x Al y intermetallic compound + oxide ceramics) can be removed by spraying a cermet and then spraying a ceramic of the same type as the ceramics in the cermet on top of it. Further, they have found that a dipping member having a sprayed coating having excellent zinc alloy adhesion and peeling resistance can be obtained, and the present invention has been accomplished. Appropriate coating thicknesses are 80 to 120 μm for the lower layer and 40 to 80 μm for the upper layer.
【００１２】すなわち本発明は、第１に、溶融亜鉛めっ
き浴中に浸漬して使用される表面に溶射皮膜が施された
部材であって、Ｆｅx Ａｌy 金属間化合物と酸化物セラ
ミックスとの混合物からなる溶射用粉末材料を部材表面
に直接溶射して形成したサーメット層と、さらにその上
に該サーメット中に含まれるものと同種類のセラミック
スからなる溶射用粉末材料を溶射して形成したセラミッ
クス層とからなる２層構造の耐剥離性皮膜が部材表面に
形成されていることを特徴とする耐溶融亜鉛合金侵食性
および耐亜鉛合金付着性に優れた溶融亜鉛めっき浴用浸
漬部材を提供することであり；第２に、前記サーメット
層のＦｅx Ａｌy 金属間化合物がｘ＝１〜３、ｙ＝１〜
５に相当する金属間化合物であり、混合される酸化物セ
ラミックスの添加量が金属間化合物と酸化物セラミック
スとの合計量を基準として５〜７０重量％である上記の
部材を提供することであり（ただし、上記Ｆｅx Ａｌy
においてＦｅとＡｌ間の結合は金属間化合物でなければ
ならない。Ｆｅ−Ａｌ間の単純な合金結合は耐Ｚｎ侵食
性が低く、保護皮膜として不適である。ＦｅＡｌ金属間
化合物の組成はＦｅ3 Ａｌ、ＦｅＡｌ2 、Ｆｅ3 Ａ
ｌ5 、ＦｅＡｌ8 （ｘ＝１〜３、ｙ＝１〜５）などがあ
るが、最も耐Ｚｎ侵食性が強いのはＦｅＡｌ2 、Ｆｅ3
Ａｌ5 である。）；第３に、前記酸化物セラミックスが
Ａｌ2 Ｏ3 、安定化もしくは部分安定化したＺｒＯ2 、
Ｃｒ2 Ｏ3 、ＺｒＳｉＯ4 およびスピネル（Ａｌ2 Ｏ3
・ＭｇＯ）のうちから選ばれる１種以上である上記第１
または第２に記載の部材を提供することである。That is, the present invention is, firstly, a member having a surface coated with a thermal spray coating, which is used by being immersed in a hot dip galvanizing bath, which comprises an Fe x Al y intermetallic compound and an oxide ceramic. A cermet layer formed by directly spraying a thermal spraying powder material composed of a mixture on the surface of a member, and a ceramic formed by further spraying a thermal spraying powder material made of the same kind of ceramic as that contained in the cermet layer on the cermet layer. To provide a dipping member for a hot-dip galvanizing bath, which is excellent in hot-dip zinc alloy erosion resistance and zinc-alloy adhesion resistance, characterized in that a delamination-resistant coating having a two-layer structure is formed on the surface of the member. by and; to a 2, Fe x Al y intermetallic compound x = 1 to 3 of the cermet layer, y =. 1 to
It is an intermetallic compound corresponding to 5, and the addition amount of the mixed oxide ceramics is 5 to 70% by weight based on the total amount of the intermetallic compound and the oxide ceramics. (However, the above Fe x Al y
In, the bond between Fe and Al must be an intermetallic compound. A simple alloy bond between Fe and Al has low Zn erosion resistance and is not suitable as a protective film. The composition of the FeAl intermetallic compound is Fe 3 Al, FeAl 2 , Fe 3 A
15 and FeAl 8 (x = 1 to 3, y = 1 to 5), etc., but the ones having the highest Zn erosion resistance are FeAl 2 and Fe 3
Is an Al 5. ); Third, the oxide ceramic is Al 2 O 3 , stabilized or partially stabilized ZrO 2 ,
Cr 2 O 3 , ZrSiO 4 and spinel (Al 2 O 3
.MgO) and the above-mentioned first which is one or more selected from
Or to provide the member described in the second.
【００１３】[0013]
【作用】本発明の浸漬用部材に溶射によって形成された
皮膜はセラミックスと金属との接合が改善されており、
皮膜の下層として溶射された（ＦｅＡｌ2 ＋酸化物セラ
ミックス）は優れた耐亜鉛侵食性があるので、たとえ上
層のセラミックス皮膜の緻密性が低くて亜鉛が浸透して
も基材が侵食されない保護効果があり、被溶射材と同等
の膨脹係数を持つ皮膜が形成されるように調整できると
いう特徴がある。なお下層サーメット中に添加するセラ
ミックス量を５〜７０％としたのは、５％未満の場合は
セラミックスの体積率が小さすぎ、７０％を越える場合
はセラミックスの体積率が大きすぎて、結合層効果に乏
しくなるので５〜７０％とした。The film formed by thermal spraying on the immersion member of the present invention has improved bonding between ceramics and metal,
The (FeAl 2 + oxide ceramics) sprayed as the lower layer of the coating has excellent zinc erosion resistance, so even if the upper ceramic coating has low density, the base material will not be eroded even if zinc penetrates. There is a feature that it can be adjusted so that a film having an expansion coefficient equivalent to that of the material to be sprayed can be formed. The amount of ceramics added to the lower cermet was set to 5 to 70% because the volume ratio of ceramics was too small when it was less than 5% and the volume ratio of ceramics was too large when it was more than 70%. Since the effect becomes poor, it was set to 5 to 70%.
【００１４】[0014]
【実施例１】図１は本発明の実施例および比較例におい
て共通に用いられた実験装置の模式断面図である。この
図を参照して以下説明する。EXAMPLE 1 FIG. 1 is a schematic sectional view of an experimental apparatus commonly used in Examples of the present invention and Comparative Examples. A description will be given below with reference to this figure.
【００１５】加熱器１により内部が所定温度に保持され
た炉体８の底部に設けられた台６に載置されたるつぼ４
内に貯えられた溶融亜鉛−０．１％アルミニウム合金５
中に、回転軸９に直結保持された棒状試料（ＳＵＳ４０
３製、径２０mm、長さ２７５mm）が窓７を有する軟鉄製
円筒３内で回転するようにし、上記棒状試料に厚さ０．
１〜０．１５mmのサーメット層の（ＦｅＡｌ2 ８０wt%
＋Ａｌ2 Ｏ3 ２０wt%）皮膜を溶射し、その上にＡｌ2
Ｏ3 のセラミックス層を溶射した溶射サンプル２を用意
し、炉内にセットした後、炉内を４６０〜５５０℃の水
素−窒素雰囲気に調整して浸漬実験を行った。A crucible 4 placed on a table 6 provided at the bottom of a furnace body 8 whose inside is kept at a predetermined temperature by a heater 1.
Molten zinc-0.1% aluminum alloy stored inside 5
Inside the rod-shaped sample (SUS40
No. 3, diameter 20 mm, length 275 mm) is rotated in a soft iron cylinder 3 having a window 7, and the rod-shaped sample has a thickness of 0.
1 to 0.15 mm cermet layer (FeAl 2 80 wt%
+ Al 2 O 3 20wt%) film was sprayed, Al 2 thereon
A thermal spray sample 2 obtained by thermal spraying a ceramic layer of O 3 was prepared, set in the furnace, and then the furnace was adjusted to a hydrogen-nitrogen atmosphere at 460 to 550 ° C. to carry out an immersion experiment.
【００１６】２週間以上浸漬した結果、供試された棒状
試料の溶射皮膜は溶融亜鉛と反応しにくく、極めて安定
度の高いものであることが確認された。As a result of the immersion for 2 weeks or more, it was confirmed that the sprayed coating of the rod-shaped sample tested did not easily react with molten zinc and had extremely high stability.
【００１７】[0017]
【実施例２】図１の実験装置を用いて、棒状試料にサー
メット層として（ＦｅＡｌ2 ８０wt% ＋ＺｒＯ2 ２０wt
% ）皮膜を、またその上にＺｒＯ2 のセラミックス層を
溶射した以外は、実施例１と同じ要領で浸漬実験を行っ
たところ、結果は同様に２週間後にも異常が認められな
かった。Example 2 Using the experimental apparatus of FIG. 1, a rod-shaped sample was used as a cermet layer (FeAl 2 80 wt% + ZrO 2 20 wt.
%) A dip experiment was conducted in the same manner as in Example 1 except that a ZrO 2 ceramic layer was sprayed on the coating, and no abnormalities were observed even after 2 weeks.
【００１８】[0018]
【比較例１】図１に示された実験装置を用い、棒状試料
にＷＣ−Ｃｏのサーメット層を溶射した溶射サンプルを
実施例１の要領に従い浸漬実験を行った。結果は溶射サ
ンプル全面にドロスが付着していた。COMPARATIVE EXAMPLE 1 Using the experimental apparatus shown in FIG. 1, a sprayed sample in which a WC-Co cermet layer was sprayed on a rod-shaped sample was subjected to an immersion experiment according to the procedure of Example 1. As a result, dross was attached to the entire surface of the sprayed sample.
【００１９】[0019]
【比較例２】図１に示された実験装置を用い、棒状試料
にコバルト基合金＋Ａｌ2 Ｏ3 のサーメット層を溶射
し、さらにその上にＺｒＯ2 のセラミックス層を溶射し
た溶射サンプルを用いて実施例１の要領に従い浸漬実験
を行った。供試された溶射サンプル上の皮膜を調べたと
ころ、浴中の亜鉛による侵食がＳＵＳ母材にまで及んで
いることが判明した。[Comparative Example 2] Using the experimental apparatus shown in FIG. 1, a bar-shaped sample was thermally sprayed with a cermet layer of cobalt-based alloy + Al 2 O 3 and further with a ceramic layer of ZrO 2 being thermally sprayed thereon. Immersion experiments were performed according to the procedure of Example 1. Examination of the coating on the sprayed samples tested revealed that the zinc in the bath was eroded to the SUS matrix.
【００２０】上記実施例および比較例で得られた実験結
果を表１にまとめて示す。The experimental results obtained in the above Examples and Comparative Examples are summarized in Table 1.
【００２１】[0021]
【表１】 [Table 1]
【００２２】[0022]
【実施例３】浴温を４５０〜４８０℃に保った自動車外
板用亜鉛メッキ浴の浴中で使用されるサポートロール駆
動軸（スピンドル）に実施例１と同様のサーメット層
（ＦｅＡｌ2 ８０wt% ＋Ａｌ2 Ｏ3 ２０wt% ）およびセ
ラミックス層（Ａｌ2 Ｏ3 ）の２層構造からなる表面被
覆を溶射により形成した。この部材を用いて自動車外板
に亜鉛メッキを施工した結果次の効果が確認された。 （１）ドロス巻き付きによりサポートロールの回転ブレ
が生じるのを有効に防止できた。 （２）スピンドルに巻き付いたドロスの除去作業が不要
となった。 （３）従来、ＳＵＳ４０３材を使用した場合、ドロスが
付着すると再使用不能で、母材として短命であったが、
本発明の方法に従って２層構造の溶射皮膜を形成すると
溶射皮膜を再生して再使用することが可能となり合金の
寿命が延びた。Example 3 The same cermet layer (FeAl 2 80 wt% as in Example 1) was applied to the support roll drive shaft (spindle) used in the bath of the galvanizing bath for automobile outer plates, the bath temperature of which was kept at 450 to 480 ° C. + Al 2 O 3 20 wt%) and a ceramic layer (Al 2 O 3 ) having a two-layer structure were formed by thermal spraying. The following effects were confirmed as a result of galvanizing an automobile outer plate using this member. (1) It was possible to effectively prevent the rotation blur of the support roll due to the dross winding. (2) It is no longer necessary to remove the dross around the spindle. (3) Conventionally, when SUS403 material was used, it could not be reused when dross adhered, and it was short-lived as a base material.
When the sprayed coating having a two-layer structure is formed according to the method of the present invention, the sprayed coating can be regenerated and reused, and the life of the alloy is extended.
【００２３】[0023]
【実施例４】２層構造の溶射皮膜として実施例２の場合
と同様に、サーメット層として（ＦｅＡｌ2 ８０wt% ＋
ＺｒＯ2 ２０wt% ）皮膜をその上のセラミックス層とし
てＺｒＯ2 を形成した以外は実施例３と同様のことを行
い、実施例３の場合と同様の効果が得られることを確認
した。[Example 4] As a sprayed coating of a two-layer structure, as in the case of Example 2, as a cermet layer (FeAl 2 80 wt% +
It was confirmed that the same effect as in the case of Example 3 was obtained by performing the same operation as in Example 3 except that ZrO 2 was formed by using a ZrO 2 20 wt%) film as a ceramic layer thereon.
【００２４】[0024]
【発明の効果】以上説明したように、本発明の溶射皮膜
を備えた浸漬部材では、溶射皮膜が下層はサーメット
層、上層はサーメット層に含まれるセラミックスと同種
類のセラミックス層という２層皮膜であるので、たとえ
セラミックス層の緻密性が低くて亜鉛が浸透しても基材
が侵されることがなく、耐溶融亜鉛侵食性および耐亜鉛
合金付着性と共に耐剥離性があり部材への優れた保護効
果を有している。As described above, in the immersion member provided with the thermal spray coating of the present invention, the thermal spray coating is a two-layer coating in which the lower layer is the cermet layer and the upper layer is a ceramic layer of the same kind as the ceramic contained in the cermet layer. Therefore, even if the density of the ceramic layer is low and the zinc penetrates, the base material is not eroded, and it is resistant to molten zinc erosion and zinc alloy adhesion as well as peeling-resistant, providing excellent protection for members. Have an effect.
【図１】本発明の実施例および比較例において、共通に
用いられた浸漬実験装置の模式断面図である。FIG. 1 is a schematic cross-sectional view of an immersion experimental apparatus commonly used in Examples and Comparative Examples of the present invention.
１ 加熱器 ２ 溶射サンプル ３ 軟鉄製円筒 ４ るつぼ ５ 溶融亜鉛−アルミニウム合金 ６ 台 ７ 窓 ８ 炉体 ９ 回転軸 1 Heater 2 Thermal Spray Sample 3 Soft Iron Cylinder 4 Crucible 5 Molten Zinc-Aluminum Alloy 6 Units 7 Window 8 Furnace Body 9 Rotating Shaft
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高 陽 埼玉県北葛飾郡鷲宮町鷲宮団地２−23− 506 (72)発明者 土屋 道彦 千葉県千葉市中央区川崎町１番地 川崎製 鉄株式会社千葉製鉄所内 (72)発明者 岸田 宏昭 千葉県千葉市中央区川崎町１番地 川崎製 鉄株式会社千葉製鉄所内 (72)発明者 村本 晴正 千葉県千葉市中央区川崎町１番地 川崎製 鉄株式会社千葉製鉄所内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Takayo 2-23-506 Washinomiya housing complex, Washimiya town, Kitakatsushika district, Saitama prefecture (72) Inventor Michihiko Tsuchiya 1 Kawasaki-cho, Chuo-ku, Chiba city Chiba prefecture Kawasaki Steel Co., Ltd. Chiba Co., Ltd. Inside the steel mill (72) Hiroaki Kishida 1st Kawasaki-cho, Chuo-ku, Chiba, Chiba Prefecture Kawasaki Steel Co., Ltd. Inside the Chiba Steel Works (72) Harumasa Muramoto 1st Kawasaki-cho, Chuo-ku, Chiba Prefecture Kawasaki Steel Co., Ltd. Chiba Works
Claims (3)
る表面に溶射皮膜が施された部材であって、Ｆｅx Ａｌ
y 金属間化合物と酸化物セラミックスとの混合物からな
る溶射用粉末材料を部材表面に直接溶射して形成したサ
ーメット層と、さらにその上に該サーメット中に含まれ
るものと同種類のセラミックスからなる溶射用粉末材料
を溶射して形成したセラミックス層とからなる２層構造
の耐剥離性皮膜が部材表面に形成されていることを特徴
とする耐溶融亜鉛合金侵食性および耐亜鉛合金付着性に
優れた溶融亜鉛めっき浴用浸漬部材。1. A member having a sprayed coating on the surface, which is used by being immersed in a hot-dip galvanizing bath, and comprising Fe x Al
y A cermet layer formed by directly spraying a powder material for thermal spraying consisting of a mixture of an intermetallic compound and oxide ceramics on the surface of a member, and a thermal spray consisting of the same kind of ceramics as that contained in the cermet layer. Excellent resistance to molten zinc alloy erosion and adhesion to zinc alloy, characterized in that a delamination resistant coating having a two-layer structure consisting of a ceramics layer formed by thermal spraying a powder material for use on the surface of the member is formed. Immersion member for hot dip galvanizing bath.
化合物がｘ＝１〜３、ｙ＝１〜５に相当する金属間化合
物であり、混合される酸化物セラミックスの添加量が金
属間化合物と酸化物セラミックスとの合計量を基準とし
て５〜７０重量％である請求項１記載の部材。2. The Fe x Al y intermetallic compound of the cermet layer is an intermetallic compound corresponding to x = 1 to 3 and y = 1 to 5, and the added amount of the oxide ceramics mixed is an intermetallic compound. The member according to claim 1, which is 5 to 70% by weight based on the total amount of the oxide ceramics and the oxide ceramics.
安定化もしくは部分安定化したＺｒＯ2 、Ｃｒ2 Ｏ3 、
ＺｒＳｉＯ4 およびスピネル（Ａｌ2 Ｏ3 ・ＭｇＯ）の
うちから選ばれる１種以上である請求項１または２記載
の部材。3. The oxide ceramics is Al 2 O 3 ,
Stabilized or partially stabilized ZrO 2 , Cr 2 O 3 ,
The member according to claim 1 or 2, which is one or more selected from ZrSiO 4 and spinel (Al 2 O 3 .MgO).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7022257A JP2982944B2 (en) | 1995-01-17 | 1995-01-17 | Immersion member for hot-dip galvanizing bath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7022257A JP2982944B2 (en) | 1995-01-17 | 1995-01-17 | Immersion member for hot-dip galvanizing bath |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08199329A true JPH08199329A (en) | 1996-08-06 |
| JP2982944B2 JP2982944B2 (en) | 1999-11-29 |
Family
ID=12077729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7022257A Expired - Fee Related JP2982944B2 (en) | 1995-01-17 | 1995-01-17 | Immersion member for hot-dip galvanizing bath |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2982944B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998049364A1 (en) * | 1997-04-28 | 1998-11-05 | Nippon Steel Hardfacing Co., Ltd. | Member for molten metal bath, provided with composite sprayed coating having excellent corrosion resistance and peeling resistance against molten metal |
| WO2018116856A1 (en) * | 2016-12-21 | 2018-06-28 | 旭硝子株式会社 | Method for forming sprayed film of intermetallic compound film, sprayed film, method for producing metal product having sprayed film, and glass conveying roll |
-
1995
- 1995-01-17 JP JP7022257A patent/JP2982944B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998049364A1 (en) * | 1997-04-28 | 1998-11-05 | Nippon Steel Hardfacing Co., Ltd. | Member for molten metal bath, provided with composite sprayed coating having excellent corrosion resistance and peeling resistance against molten metal |
| WO2018116856A1 (en) * | 2016-12-21 | 2018-06-28 | 旭硝子株式会社 | Method for forming sprayed film of intermetallic compound film, sprayed film, method for producing metal product having sprayed film, and glass conveying roll |
| JPWO2018116856A1 (en) * | 2016-12-21 | 2019-10-24 | Ａｇｃ株式会社 | Method for forming intermetallic compound sprayed coating, sprayed coating, method for producing metal product having sprayed coating, and roll for glass conveyance |
| EP3561143A4 (en) * | 2016-12-21 | 2020-04-29 | Agc Inc. | Method for forming sprayed film of intermetallic compound film, sprayed film, method for producing metal product having sprayed film, and glass conveying roll |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2982944B2 (en) | 1999-11-29 |
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