JP2612127B2 - Hot-dip galvanizing bath immersion member with excellent durability - Google Patents
Hot-dip galvanizing bath immersion member with excellent durabilityInfo
- Publication number
- JP2612127B2 JP2612127B2 JP4053698A JP5369892A JP2612127B2 JP 2612127 B2 JP2612127 B2 JP 2612127B2 JP 4053698 A JP4053698 A JP 4053698A JP 5369892 A JP5369892 A JP 5369892A JP 2612127 B2 JP2612127 B2 JP 2612127B2
- Authority
- JP
- Japan
- Prior art keywords
- hot
- immersion member
- dip galvanizing
- bath immersion
- bath
- 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 - Lifetime
Links
Landscapes
- Coating With Molten Metal (AREA)
- Coating By Spraying Or Casting (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、溶融亜鉛めっき浴内で
使用されるシンクロール、サポートロールおよびこれら
のロール軸、軸受けの溶融亜鉛に対する耐久性を向上せ
しめる技術に関するものであり、耐久性に優れた溶融亜
鉛めっき浴浸漬用部材を提供するものである。The present invention relates is a technique of improving the sink roll for use in a molten zinc plating bath, support rolls and their roll axes, the durability with respect to the bearing only in molten zinc, durability The present invention is to provide a hot-dip galvanizing bath immersion member having excellent heat resistance.
【０００２】[0002]
【従来の技術】溶融亜鉛めっき鋼板の用途が自動車、家
電用外板にまで拡大し、製品に対する表面品位の要求レ
ベルは従来にくらべて著しく厳格化してきた。しかして
溶融亜鉛めっき装置としては、例えば、図１に示すごと
く、鋼帯１をめっき浴２中へ導き、シンクロール３、サ
ポートロール４を介してめっきし上部へ引き上げるもの
である。このような溶融亜鉛めっき浴内で使用されるシ
ンクロール、サポートロールおよびこれらの軸、軸受け
部材としては、高Ｃｒ−Ｎｉステンレス系材料が使用さ
れてきたが、これらめっき浴浸漬部材は、使用と共に、
表面が溶融亜鉛に浸食される（粒界亜鉛脆化）、浴
成分との合金化反応による合金層の形成、あるいは、
可撓部でのミクロスリップによる摩耗の結果、表面に凹
凸を生ずる。かかる部材表面の劣化はめっき製品の表面
品位低下に結びつくことから、厳格製品の生産量増加と
共にロール等亜鉛めっき浴浸漬部材の取替え頻度は高ま
り、生産性低下を招いていた。2. Description of the Related Art The use of hot-dip galvanized steel sheets has been expanded to outer panels for automobiles and home appliances, and the required level of surface quality for products has been significantly stricter than before. As a hot-dip galvanizing apparatus, for example, as shown in FIG. 1, a steel strip 1 is guided into a plating bath 2, plated through a sink roll 3, a support roll 4, and pulled up. High Cr-Ni stainless steel materials have been used as sink rolls, support rolls, and their shafts and bearing members used in such a hot-dip galvanizing bath. ,
The surface is eroded by molten zinc (grain-boundary zinc embrittlement), forming an alloy layer by alloying reaction with bath components, or
As a result of abrasion due to microslip in the flexible portion, unevenness is generated on the surface. Since such deterioration of the member surface leads to deterioration of the surface quality of the plated product, the frequency of replacing the zinc plating bath immersion member such as a roll increases with the increase in the production amount of the strict product, resulting in a decrease in productivity.
【０００３】最近では、かかる問題を改善するためにＷ
Ｃ−Ｃｏ系溶射被覆を施す技術が開示されている（特開
平２−１２５８３３号公報）が、該技術をもってしても
亜鉛メッキ浴浸漬部材の寿命は２週間〜２か月であり十
分ではない。Recently, in order to improve such a problem, W
A technique for applying a C-Co-based thermal spray coating is disclosed (Japanese Patent Laid-Open No. 2-125833), but even with this technique, the life of a galvanizing bath immersion member is 2 weeks to 2 months, which is not sufficient. .
【０００４】また、セラミック系材料の溶射に関しても
検討が加えられているが、いずれも溶融亜鉛に対する耐
食性、皮膜の割れ、剥離等の問題が解決されるに至って
いない。[0004] Further, studies have been made on the thermal spraying of ceramic materials, but none of them has solved the problems such as corrosion resistance to molten zinc, cracking of the coating, and peeling.
【０００５】特開昭６０−２９４５７号公報には亜鉛浴
浸漬部材表面に酸化物系成分を主体とする陶磁器、ほう
ろう用釉薬を被覆形成せしめる技術が開示されている
が、最近の要求レベルに対しては更に改善が必要であ
る。Japanese Patent Application Laid-Open No. 60-29457 discloses a technique for coating a surface of a zinc bath immersion member with a glaze for porcelain or enamel mainly composed of an oxide-based component. Further improvements are needed.
【０００６】[0006]
【発明の目的】本発明はかかる問題を解決するため、溶
融亜鉛に対する耐久寿命に優れた溶融亜鉛めっき浴浸漬
用部材を提供し、該部材の使用寿命を向上せしめるもの
である。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a hot-dip galvanizing bath immersion member having excellent durability against hot-dip zinc, and improves the service life of the member.
【０００７】[0007]
【発明の構成】本発明者等は、上記問題点を解決するた
め種々の研究を行い、耐食性（耐粒界亜鉛脆化、耐合金
化）、耐摩耗性および耐剥離性（皮膜の密着性）に優れ
た表面溶射層を発明するに到ったものである。The present inventors have conducted various studies to solve the above-mentioned problems, and have investigated corrosion resistance (grain-boundary zinc embrittlement and alloying resistance), abrasion resistance and peeling resistance (coating adhesion). The present invention has led to the invention of a surface sprayed layer excellent in (1).
【０００８】すなわち、本発明の要旨は、 （１）部材表面の溶射被覆がＡｌ 2 Ｏ 3 、ＳｉＯ 2 によ
って構成され、ＳｉＯ 2 の含有率が５〜７０重量％であ
ることを特徴とする耐久性に優れた溶融亜鉛めっき浴浸
漬部材。 （２）部材表面にＴｉＯ 2 、ＭｇＯ、ＺｒＯ 2 、Ｃａ
Ｏ、ＳｉＣ、ＳｉＮの１種又は２種以上からなる溶射被
覆を施したことを特徴とする耐久性に優れた溶融亜鉛め
っき浴浸漬部材。 （３）部材表面の溶射被覆に、更にＴｉＯ 2 、ＭｇＯ、
ＺｒＯ 2 、ＣａＯ、ＳｉＣ、ＳｉＮの１種又は２種以上
を含有した上記（１）項記載の耐久性に優れた溶融亜鉛
めっき浴浸漬部材。 である。That is, the gist of the present invention is as follows: (1) The thermal spray coating on the member surface is made of Al 2 O 3 or SiO 2 .
And the content of SiO 2 is 5 to 70% by weight.
Durable hot dip galvanizing bath
Pickled members. (2) TiO 2 , MgO, ZrO 2 , Ca
Thermal spray coating consisting of one or more of O, SiC, SiN
Durable hot-dip zinc coated with a cover
Immersion bath immersion member. (3) TiO 2 , MgO,
One or more of ZrO 2 , CaO, SiC, SiN
(1) The molten zinc excellent in durability according to (1) above.
Plating bath immersion member. It is.
【０００９】Ａｌ2 Ｏ3 、ＳｉＯ2 、ＴｉＯ2 、Ｍｇ
Ｏ、ＺｒＯ2 、ＣａＯ等の酸化物は溶射被覆成分として
既知のものであるが、本発明者等は研究の結果、酸化物
の中でも特にこれらが溶融亜鉛めっき浴浸漬部材用皮膜
として優れることを見いだした。同様に金属炭化物、窒
化物の中でＳｉＣ、ＳｉＮが同等の特性を有するとの知
見を得たものである。Al 2 O 3 , SiO 2 , TiO 2 , Mg
Oxides such as O, ZrO 2 , and Ca O are known as thermal spray coating components. However, as a result of research, the present inventors have found that, among oxides, they are particularly excellent as coatings for hot-dip galvanizing bath immersion members. Was found. Similarly, it has been found that among metal carbides and nitrides, SiC and SiN have equivalent characteristics.
【００１０】Ａｌ2 Ｏ3 、ＳｉＯ2 が溶融亜鉛浴中で優
れた耐久性を有する最大の理由は、溶融亜鉛に対する濡
れ性がよい、即ち、亜鉛中での潤滑性がよいことから使
用中の耐摩耗性に優れる点である。併せて、溶融亜鉛と
の反応性も低く、耐粒界亜鉛脆化、耐合金化性など耐食
性についても良好である。The main reason that Al 2 O 3 and SiO 2 have excellent durability in a molten zinc bath is that they have good wettability to molten zinc, that is, because they have good lubricity in zinc, This is a point of excellent wear resistance. In addition, it has low reactivity with molten zinc, and has good corrosion resistance such as grain boundary zinc embrittlement resistance and alloying resistance.
【００１１】溶射被覆をＡｌ2 Ｏ3 、ＳｉＯ2 によって
構成する場合には、ＳｉＯ2 の含有率を５〜７０重量％
とすることが最も望ましい。Ａｌ2 Ｏ3 、ＳｉＯ2 は熱
膨張率、延性、硬度が異なるため、これらを複合溶射す
ることにより浴内浸漬過程もしくは浴から取り出す過
程、換言すれば加熱、冷却中の耐剥離性が向上する。Ｓ
ｉＯ2 は含有率が５重量％未満、７０重量％超ではかか
る効果が十分に得られない。When the thermal spray coating is made of Al 2 O 3 or SiO 2 , the content of SiO 2 is 5 to 70% by weight.
Is most desirable. Since Al 2 O 3 and SiO 2 have different coefficients of thermal expansion, ductility and hardness, they are subjected to composite thermal spraying to improve immersion in a bath or removal from a bath, in other words, peeling resistance during heating and cooling. . S
If the content of iO 2 is less than 5% by weight and more than 70% by weight, such effects cannot be sufficiently obtained.
【００１２】ＳｉＣ、ＳｉＮは、溶射被覆成分として溶
融亜鉛中での耐食性の観点で最も優れた特性を有する。SiC and SiN have the most excellent properties as a thermal spray coating component from the viewpoint of corrosion resistance in molten zinc.
【００１３】ＴｉＯ2 、ＭｇＯ、ＺｒＯ2 、ＣａＯ酸化
物も同様に亜鉛に対する耐食性が良い。TiO 2 , MgO, ZrO 2 , and CaO oxide also have good corrosion resistance to zinc.
【００１４】特開昭６０−２９４５７号公報には亜鉛浴
浸漬部材表面に酸化物系成分（Ｎａ 2 Ｏ、Ｋ2 Ｏ、Ｂ2
Ｏ5 、ＳｉＯ2 、ＭｇＯ、ＣａＯ、Ａｌ2 Ｏ3 、ＺｒＯ
2 ）を主成分とする陶磁器、ほうろう用釉薬を被覆形成
せしめる技術が開示されている。該技術は浴浸漬部材の
耐久性を向上せしめる効果はあるものの、めっき鋼板の
表面品位に対する要求が極めて厳格化した最近では、そ
の品位を維持するための部材寿命要求値を更に高める必
要がある。本発明は酸化物系皮膜、炭化物系皮膜、窒化
物系皮膜の溶射処理による耐久性向上技術を提供するも
のであり、釉薬被覆法と比較して耐久性が一段と優れ
る。この理由は溶射処理で得た本発明の皮膜が該開示技
術と比較して緻密で硬度が高く、溶融亜鉛浴での耐食
性、耐摩耗性に優れるためである。JP-A-60-29457 discloses a zinc bath.
Oxide-based components (Na Two O, KTwo O, BTwo
OFive , SiOTwo , MgO, CaO, AlTwo OThree , ZrO
Two ) As a main component, coated with ceramic and enamel glaze
A disclosed technique is disclosed. The technology is applied to bath immersion components.
Although it has the effect of improving the durability,
In recent years when the demand for surface quality has become extremely strict,
It is necessary to further increase the life expectancy of parts to maintain the quality of
It is necessary. The present invention relates to oxide-based coatings, carbide-based coatings,
To provide technology to improve durability by thermal spraying of material coatings
The durability is much better than the glaze coating method.
You. The reason for this is that the coating of the present invention obtained by the thermal spraying process was
Higher hardness and higher corrosion resistance in molten zinc bath
This is because of excellent heat resistance and wear resistance.
【００１５】本発明における溶射皮膜の厚みは、５〜５
００μｍとする必要がある。５μｍ未満では亜鉛浴中部
材の寿命向上効果が小さく、５００μｍを超える厚さで
は熱衝撃に対する溶射皮膜の密着性が低下する。The thickness of the thermal spray coating in the present invention is 5 to 5
It must be 00 μm. When the thickness is less than 5 μm, the effect of improving the life of the member in the zinc bath is small, and when the thickness exceeds 500 μm, the adhesion of the thermal spray coating to thermal shock is reduced.
【００１６】溶射皮膜の成分としては、下記イ）、また
はロ）とハ）の全ての組合せが可能である。 イ）Ａｌ 2 Ｏ 3 、ＳｉＯ 2 かつＳｉＯ 2 の含有率が５〜
７０重量％ ロ）ＴｉＯ 2 、ＭｇＯ、ＺｒＯ 2 、ＣａＯ、ＳｉＣ、Ｓ
ｉＮの１種又は２種以上 ハ）Ａｌ 2 Ｏ 3 、ＳｉＯ 2 かつＳｉＯ 2 の含有率が５〜
７０重量％、更にＴｉＯ 2 、ＭｇＯ、ＺｒＯ 2 、Ｃａ
Ｏ、ＳｉＣ、ＳｉＮの１種又は２種以上 As the components of the thermal spray coating, any combination of the following a) or b) and c) is possible. B) Al 2 O 3 , SiO 2 and the content of SiO 2 is 5
70% by weight b) TiO 2 , MgO, ZrO 2 , CaO, SiC, S
One or more of iN c) Al 2 O 3 , SiO 2 and the content of SiO 2 is 5
70% by weight, TiO 2 , MgO, ZrO 2 , Ca
One or more of O, SiC and SiN
【００１７】溶射を施す母材ロールの成分に関しては、
特に規定する必要がない。１２Ｃｒ系ステンレス鋼、２
５Ｃｒ−１２Ｎｉ系ステンレス鋼をはじめ通常のロール
素材に適用可能である。With respect to the components of the base material roll to be sprayed,
There is no need to specify. 12Cr stainless steel, 2
It is applicable to ordinary roll materials including 5Cr-12Ni stainless steel.
【００１８】溶射の方法、溶射後の熱処理等については
特に規定する必要はなく、通常のプラズマ溶射をはじめ
とする方法を適用することができる。The method of thermal spraying, heat treatment after thermal spraying and the like need not be particularly specified, and a method such as ordinary plasma thermal spraying can be applied.
【００１９】表面粗さをはじめとする表面仕上げに関し
ても特に規定する必要はなく、全ての仕様に適用可能で
ある。There is no need to particularly define the surface finish including the surface roughness, and the present invention can be applied to all specifications.
【００２０】このような本発明による部材は、溶融亜鉛
めっき浴のサポートロール、シンクロール、これらのロ
ール軸、軸受からなる浸漬部材として用いることができ
る。Such a member according to the present invention includes a support roll and a sink roll for a hot-dip galvanizing bath,
It can be used as an immersion member consisting of a tool shaft and a bearing .
【００２１】[0021]
【実施例】２５Ｃｒ−１２Ｎｉ系ステンレス鋼を母材と
する２５０φのサポートロールに対して表１に示す各組
成の表面溶射層を施した。溶射皮膜の厚みは２００μ
ｍ、溶射後の表面粗度はＲａ＝３．０μｍ。EXAMPLE A surface sprayed layer of each composition shown in Table 1 was applied to a 250φ support roll made of 25Cr-12Ni stainless steel as a base material. Thermal spray coating thickness is 200μ
m, the surface roughness after thermal spraying was Ra = 3.0 μm.
【００２２】連続溶融亜鉛めっきラインのめっき浴中で
使用し、耐久寿命を測定した。めっき浴の組成はＡｌ：
０．１４重量％、Ｆｅ：０．０３重量％、残部Ｚｎおよ
び不可避的不純物であり、めっき浴温度は４６０℃であ
る。寿命の判定は、めっき鋼板にすり疵が発生した時点
とした。It was used in a plating bath of a continuous hot-dip galvanizing line, and its durable life was measured. The composition of the plating bath is Al:
0.14% by weight, Fe: 0.03% by weight, the balance being Zn and inevitable impurities, and the plating bath temperature was 460 ° C. The life was determined at the time when a scratch occurred on the plated steel sheet.
【００２３】[0023]
【表１】 [Table 1]
【００２４】[0024]
【発明の効果】以上の如く、本発明の溶融亜鉛めっき浴
浸漬部材を用いることにより該部材の耐久寿命が大幅に
向上し、生産性の向上が可能となる。加えて、浴浸漬部
材の表面品位が安定し、めっき鋼板表面品質の安定維持
に貢献するものである。As described above, by using the hot dip galvanizing bath member of the present invention, the durable life of the member is greatly improved, and the productivity can be improved. In addition, the surface quality of the bath immersion member is stabilized, contributing to the stable maintenance of the surface quality of the plated steel sheet.
【図１】溶融亜鉛メッキ装置の該概略図。FIG. 1 is a schematic view of a hot-dip galvanizing apparatus.
１…鋼帯 ２…めっき浴 ３…シンクロール ４…サポートロール 1. Steel strip 2. Plating bath 3. Sink roll 4. Support roll
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大藏隆彦 東京都港区虎ノ門２丁目10番１号 日本 鉱業株式会社内 (56)参考文献 特開 平５−195178（ＪＰ，Ａ) 実開 平３−74656（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Takahiko Okura 2-10-1 Toranomon, Minato-ku, Tokyo Japan Mining Co., Ltd. (56) References JP-A-5-195178 (JP, A) −74656 (JP, U)
Claims (3)
Ｏ 2 によって構成され、ＳｉＯ 2 の含有率が５〜７０重
量％であることを特徴とする耐久性に優れた溶融亜鉛め
っき浴浸漬部材。 The thermal spray coating on the member surface is made of Al 2 O 3 or Si.
It is composed of O 2 and the content of SiO 2 is 5 to 70 weight
% Durable hot-dip zinc alloy
Immersion bath immersion member.
2 、ＣａＯ、ＳｉＣ、ＳｉＮの１種又は２種以上からな
る溶射被覆を施したことを特徴とする耐久性に優れた溶
融亜鉛めっき浴浸漬部材。 (2)TiO on the member surface Two , MgO, ZrO
Two , CaO, SiC, and SiN.
Durable thermal spray coating
Hot-dip galvanized bath immersion member.
ＭｇＯ、ＺｒＯMgO, ZrO 2Two 、ＣａＯ、ＳｉＣ、ＳｉＮの１種又は, CaO, SiC, SiN or
２種以上を含有した請求項１記載の耐久性に優れた溶融2. The durable melt according to claim 1, which contains two or more kinds.
亜鉛めっき浴浸漬部材。Zinc plating bath immersion member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4053698A JP2612127B2 (en) | 1992-03-12 | 1992-03-12 | Hot-dip galvanizing bath immersion member with excellent durability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4053698A JP2612127B2 (en) | 1992-03-12 | 1992-03-12 | Hot-dip galvanizing bath immersion member with excellent durability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05311369A JPH05311369A (en) | 1993-11-22 |
| JP2612127B2 true JP2612127B2 (en) | 1997-05-21 |
Family
ID=12950039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4053698A Expired - Lifetime JP2612127B2 (en) | 1992-03-12 | 1992-03-12 | Hot-dip galvanizing bath immersion member with excellent durability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2612127B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10306362A (en) * | 1997-04-28 | 1998-11-17 | Nippon Steel Hardfacing Co Ltd | Member for hot dip metal bath in which composite sprayed coating excellent in corrosion resistance to hot dip metal and peeling resistance is formed |
| JP4571250B2 (en) * | 1999-02-15 | 2010-10-27 | トーカロ株式会社 | Roll for molten metal plating bath and method for producing the same |
| FR2816325B1 (en) * | 2000-11-07 | 2003-08-08 | A F Electrification | METHOD FOR PRESERVING A SUPPORTING MEMBER OF THE EFFECTS OF A GALVANIZATION BATH TREATMENT TO WHICH THE PIECE IT IS SUPPORTING AND SUPPORTING MEMBER PRODUCED |
| CN104152838B (en) * | 2014-07-16 | 2016-09-07 | 江苏南山冶金机械制造有限公司 | A kind of pottery sinking roller and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2758340A1 (en) * | 1977-12-27 | 1979-07-05 | Pfister Waagen Gmbh | HYDROSTATIC ACTUATOR |
| JPH0518498Y2 (en) * | 1987-09-09 | 1993-05-17 | ||
| JPH04112973A (en) * | 1990-08-31 | 1992-04-14 | Shimadzu Corp | Radial pump or motor |
-
1992
- 1992-03-12 JP JP4053698A patent/JP2612127B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05311369A (en) | 1993-11-22 |
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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: 19961217 |