JPH0641713A - Member for hot dipping metal bath - Google Patents
Member for hot dipping metal bathInfo
- Publication number
- JPH0641713A JPH0641713A JP19679892A JP19679892A JPH0641713A JP H0641713 A JPH0641713 A JP H0641713A JP 19679892 A JP19679892 A JP 19679892A JP 19679892 A JP19679892 A JP 19679892A JP H0641713 A JPH0641713 A JP H0641713A
- Authority
- JP
- Japan
- Prior art keywords
- hot
- dipping zinc
- molten metal
- zinc
- ceramic
- 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
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、溶融金属浴用部材、特
に連続亜鉛めっき装置を構成するスナウト、スナップロ
ールの駆動軸又はドロス回収装置等の構成部材に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a member for a molten metal bath, and more particularly to a member for constituting a continuous galvanizing apparatus such as a snout, a drive shaft of a snap roll or a dross recovery device.
【０００２】[0002]
【従来の技術】鋼板に亜鉛めっきを連続的に施すには、
鋼板をスナウトから溶融亜鉛浴槽に投入し、溶融亜鉛に
浸漬されているガイドロールの周囲を搬送すると共に、
一対のスナップロールを通じて浴槽から引き上げてい
た。この種の溶融亜鉛浴用部材は、以下の性能を必要と
する。2. Description of the Related Art For continuously galvanizing steel sheets,
Put the steel plate from the snout into the molten zinc bath and convey it around the guide roll immersed in the molten zinc,
It was pulled up from the bathtub through a pair of snap rolls. The molten zinc bath member of this type requires the following performances.
【０００３】（１）溶融亜鉛による侵食が発生しないこ
と。 （２）付着した亜鉛が容易に剥離すること。 （３）定期的に行われる部材の手入れ（酸洗）の際、耐
侵食皮膜が酸洗液に侵されないこと。 従来では、溶融亜鉛浴用部材に対しては、基材の表面に
Ｃｏ基合金あるいはＷＣ−Ｃｏ系サーメットを溶射して
皮膜を形成し、溶融亜鉛の侵食を防止していた。しか
し、前者は性能（１）に対してのみ効果があり、後者は
性能（１），（２）に対して効果があり、性能（１），
（２），（３）全てを満足する対策はなかった。即ち、
従来のセラミック皮膜は溶融亜鉛の侵食に対しては効果
的であるが、下盛皮膜や基材が侵食されてセラミック皮
膜に浮きや剥離を生じ、結果的に浴用部材は短寿命であ
った。(1) No corrosion by molten zinc occurs. (2) The attached zinc should be easily peeled off. (3) The erosion resistant film should not be attacked by the pickling solution during regular maintenance (pickling) of the members. Conventionally, for a member for a molten zinc bath, a Co-based alloy or a WC-Co based cermet is sprayed on the surface of a substrate to form a film, thereby preventing corrosion of the molten zinc. However, the former has an effect only on the performance (1), and the latter has an effect on the performances (1) and (2).
There were no measures to satisfy all of (2) and (3). That is,
Although the conventional ceramic coating is effective against the erosion of molten zinc, the underlying coating and the base material are eroded to cause floating and peeling of the ceramic coating, resulting in a short life of the bath member.
【０００４】[0004]
【発明の目的、構成、作用】以上の問題点に鑑み、本発
明の目的は、溶融金属に対する耐侵食特性に優れた溶融
金属浴用部材を提供することにある。以上の目的を達成
するため、本発明に係る溶融金属浴用部材は、基材の表
面に、Ｃｏ基合金からなる下盛層と、ＺｒＯ2系セラミ
ックからなる上盛層をそれぞれ溶射によって形成した。
溶射とは、アーク、ガス、火炎あるいはプラズマ等の高
温熱源により金属を溶融して基材へ溶着させる技術を広
く意味する。SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a molten metal bath member having excellent corrosion resistance against molten metal. In order to achieve the above object, the molten metal bath member according to the present invention has a base layer made of a Co-based alloy and a top layer made of ZrO 2 -based ceramic formed on the surface of the base material by thermal spraying.
The thermal spraying broadly means a technique of melting a metal by a high-temperature heat source such as arc, gas, flame or plasma and fusing it to a substrate.
【０００５】ここで、Ｃｏ基合金からなる下盛層は、溶
融金属の侵食に対して強い防御性能を発揮する。また、
ＺｒＯ2系セラミックからなる上盛層は、溶融金属との
濡れ性が悪く、付着凝固した金属を容易に取り除くこと
が可能である。Here, the underlayer made of a Co-based alloy exerts a strong defense performance against erosion of molten metal. Also,
The upper layer made of ZrO 2 -based ceramic has poor wettability with molten metal and can easily remove the adhered and solidified metal.
【０００６】[0006]
【実施例】以下、本発明の実施例について添付図面を参
照して説明する。図１は鋼板に対する連続亜鉛めっき装
置を示し、主に、溶融亜鉛浴槽１とスナウト２とガイド
ロール３と一対のスナップロール４，４とで構成されて
いる。スナウト２は鋼板１０を溶融亜鉛に連続的に投入
するためのもので、窒素等の不活性ガスが充填されてい
る。ガイドロール３及びスナップロール４，４はそれぞ
れ支軸５，６，６を備え、図示しない駆動源に連結さ
れ、矢印方向に定速で回転駆動される。なお、この連続
亜鉛めっき装置には、図示しないが、他に、インゴット
投入装置、ドロス回収装置、ロール３，４，４の架台等
が設けられている。Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a continuous galvanizing apparatus for steel sheets, which is mainly composed of a molten zinc bath 1, a snout 2, a guide roll 3 and a pair of snap rolls 4, 4. The snout 2 is for continuously charging the steel sheet 10 into molten zinc, and is filled with an inert gas such as nitrogen. The guide roll 3 and the snap rolls 4 and 4 are provided with support shafts 5, 6 and 6, respectively, and are connected to a drive source (not shown), and are rotationally driven at a constant speed in the arrow direction. In addition, although not shown, the continuous galvanizing apparatus is provided with an ingot feeding device, a dross collecting device, a stand for the rolls 3, 4, 4 and the like.
【０００７】ところで、本発明者らは、前記スナップロ
ール４，４の支軸６，６と駆動源とを連結するスピンド
ルに、溶融亜鉛の付着成長を防ぐ対策を以下に説明する
ように施した。スピンドルの材質はＳＵＳ−３１６Ｌ
（ＪＩＳ規格）、直径は７０ｍｍである。まず、スピン
ドル基材の表面にＣｏ基合金（Ｃｏ−Ｃｒ）をガスプラ
ズマ溶射法によって溶射し、０．２ｍｍ厚さの下盛層を
形成した。さらに、その上にＺｒＯ2系セラミック（Ｚ
ｒＯ2-ＣａＯ）を同じくガスプラズマ溶射法によって溶
射し、０．３ｍｍ厚さの上盛層を形成した。さらに、上
盛層上にＳｉＯ2系セラミック（ＳｉＯ2）を塗布して封
孔処理を行い、サンドペーパーで仕上げた。By the way, the present inventors have taken a measure for preventing the adhesion and growth of molten zinc on the spindle connecting the support shafts 6 and 6 of the snap rolls 4 and 4 and the drive source as described below. . The material of the spindle is SUS-316L
(JIS standard), the diameter is 70 mm. First, a Co-based alloy (Co-Cr) was sprayed on the surface of the spindle base material by a gas plasma spraying method to form an underlayer layer having a thickness of 0.2 mm. Furthermore, ZrO 2 system ceramic (Z
rO 2− CaO) was also sprayed by a gas plasma spraying method to form a 0.3 mm thick overlay layer. Further, SiO 2 -based ceramic (SiO 2 ) was applied on the overlay layer to carry out a sealing treatment and finished with sandpaper.
【０００８】従来のスピンドル（表面処理は特に施され
てはいない）では３ヶ月の継続使用によって寿命がつき
ていたが、本発明を実施したスピンドルは３ヶ月の継続
使用後、酸洗いし、さらに３ヶ月使用して酸洗いし、さ
らに使用してもセラミック皮膜の損傷は見られなかっ
た。その理由として、Ｃｏ基合金からなる下盛層は、本
来的に溶融亜鉛の侵食に対して強い防御性能を有するこ
と、ＺｒＯ2系セラミックからなる上盛層は、溶融亜鉛
との濡れ性が悪く、溶融亜鉛の付着がそれ程進行せず、
付着凝固した亜鉛の除去が容易であることを挙げること
ができる。また、上盛層がＳｉＯ2系セラミックによっ
て封孔処理されているため、侵食に対する防御作用がよ
り効果的である。The conventional spindle (which has not been surface-treated) has a life of 3 months of continuous use, but the spindle of the present invention is pickled after 3 months of continuous use. No damage was observed on the ceramic coating even after 3 months of use and pickling. The reason for this is that the underlayer made of a Co-based alloy originally has a strong defense performance against the erosion of molten zinc, and the upper layer made of ZrO 2 -based ceramic has poor wettability with molten zinc. , The adhesion of molten zinc did not proceed so much,
It can be mentioned that zinc that has adhered and solidified can be easily removed. Moreover, since the upper layer is sealed with the SiO 2 ceramic, the protective action against erosion is more effective.
【０００９】なお、本発明に係る溶融金属浴用部材は前
記実施例に限定するものではなく、その要旨の範囲内で
種々に変更することができる。特に、本発明は、溶融亜
鉛のみならず他の種類の金属、例えば溶融アルミニウム
に対しても耐侵食特性を発揮する。また、Ｃｏ基自浴性
合金皮膜及びＺｒＯ2系セラミック皮膜を形成する溶融
金属浴用部材としては、前記駆動スピンドル以外にスナ
ウト、ドロス回収装置、ロール、ロール架台、インゴッ
ト投入装置等の種々の部材が適用可能であり、それぞれ
溶融金属に対する良好な耐侵食特性を発揮する。The member for molten metal bath according to the present invention is not limited to the above embodiment, but can be variously modified within the scope of the gist. In particular, the present invention exhibits corrosion resistance properties not only for molten zinc but also for other types of metals, such as molten aluminum. As the member for the molten metal bath for forming the Co-based self-bathing alloy film and the ZrO 2 -based ceramic film, various members such as a snout, a dross recovery device, a roll, a roll mount, and an ingot feeding device other than the drive spindle are used. Applicable and each exhibits good erosion resistance to molten metal.
【００１０】[0010]
【発明の効果】以上の説明で明らかなように、本発明に
よれば、溶融金属浴用部材の基材の表面に、Ｃｏ基合金
からなる下盛層と、ＺｒＯ2系セラミックからなる上盛
層とをそれぞれ溶射によって形成したため、溶融金属に
よる侵食が発生せず、付着した溶融金属が容易に剥離
し、定期的な酸洗時にセラッミク皮膜が酸洗液に侵され
ることなく、長寿命化を達成できる。As is apparent from the above description, according to the present invention, the underlayer made of a Co-based alloy and the upper layer made of ZrO 2 -based ceramic are formed on the surface of the base material of the member for molten metal bath. Since and are formed by thermal spraying respectively, corrosion by molten metal does not occur, the adhered molten metal is easily peeled off, and the ceramic coating is not attacked by the pickling solution during regular pickling, achieving a longer life. it can.
【図１】本発明に係る浴用部材及び浴槽を用いた連続亜
鉛めっき装置の概略構成図。FIG. 1 is a schematic configuration diagram of a bath member and a continuous galvanizing apparatus using a bath according to the present invention.
１…溶融亜鉛浴槽 ２…スナウト ３…ガイドロール ４…スナップロール １０…被めっき鋼板 1 ... Molten zinc bath 2 ... Snout 3 ... Guide roll 4 ... Snap roll 10 ... Steel plate to be plated
Claims (2)
層と、ＺｒＯ2系セラミックからなる上盛層とをそれぞ
れ溶射によって形成したことを特徴とする溶融金属浴用
部材。1. A member for a molten metal bath, characterized in that a lower layer made of a Co-based alloy and an upper layer made of a ZrO 2 -based ceramic are formed on the surface of a base material by thermal spraying, respectively.
ことを特徴とする請求項１記載の溶融金属浴用部材。2. The member for a molten metal bath according to claim 1, wherein the surface of the overlay layer is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19679892A JPH0641713A (en) | 1992-07-23 | 1992-07-23 | Member for hot dipping metal bath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19679892A JPH0641713A (en) | 1992-07-23 | 1992-07-23 | Member for hot dipping metal bath |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0641713A true JPH0641713A (en) | 1994-02-15 |
Family
ID=16363828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19679892A Pending JPH0641713A (en) | 1992-07-23 | 1992-07-23 | Member for hot dipping metal bath |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0641713A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996027694A1 (en) * | 1995-03-08 | 1996-09-12 | Tocalo Co., Ltd. | Member having composite coating and process for producing the same |
| EP0927774A1 (en) * | 1997-04-28 | 1999-07-07 | 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 |
| KR100419178B1 (en) * | 1999-12-13 | 2004-02-14 | 주식회사 포스코 | Additional Ceramic Roll for Reducing Drosses in CGL Line |
| KR100501504B1 (en) * | 2000-12-26 | 2005-07-18 | 주식회사 포스코 | The method of prevention of iron dissolution and dross adhesion on pot structure in zinc pot |
-
1992
- 1992-07-23 JP JP19679892A patent/JPH0641713A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996027694A1 (en) * | 1995-03-08 | 1996-09-12 | Tocalo Co., Ltd. | Member having composite coating and process for producing the same |
| GB2313847A (en) * | 1995-03-08 | 1997-12-10 | Tocalo Co Limited | Member having composite coating and process for producing the same |
| GB2313847B (en) * | 1995-03-08 | 1998-12-09 | Tocalo Co Ltd | Member having composite coating and process for producing the same |
| US6129994A (en) * | 1995-03-08 | 2000-10-10 | Tocalo Co., Ltd. | Member having composite coating and process for producing the same |
| DE19681296C2 (en) * | 1995-03-08 | 2003-01-23 | Tocalo Co Ltd | Composite coating element and method of making the same |
| EP0927774A1 (en) * | 1997-04-28 | 1999-07-07 | 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 |
| EP0927774A4 (en) * | 1997-04-28 | 2003-06-04 | Nippon Steel Hardfacing | Member for molten metal bath, provided with composite sprayed coating having excellent corrosion resistance and peeling resistance against molten metal |
| KR100419178B1 (en) * | 1999-12-13 | 2004-02-14 | 주식회사 포스코 | Additional Ceramic Roll for Reducing Drosses in CGL Line |
| KR100501504B1 (en) * | 2000-12-26 | 2005-07-18 | 주식회사 포스코 | The method of prevention of iron dissolution and dross adhesion on pot structure in zinc pot |
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