JPH01108354A - Member for dipping in hot dip galvanizing bath - Google Patents
Member for dipping in hot dip galvanizing bathInfo
- Publication number
- JPH01108354A JPH01108354A JP26577087A JP26577087A JPH01108354A JP H01108354 A JPH01108354 A JP H01108354A JP 26577087 A JP26577087 A JP 26577087A JP 26577087 A JP26577087 A JP 26577087A JP H01108354 A JPH01108354 A JP H01108354A
- Authority
- JP
- Japan
- Prior art keywords
- dipping
- dip galvanizing
- alloy
- hot dip
- 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.)
- Granted
Links
- 238000005246 galvanizing Methods 0.000 title abstract description 15
- 238000007598 dipping method Methods 0.000 title abstract 5
- 238000007654 immersion Methods 0.000 claims description 10
- 229910045601 alloy Inorganic materials 0.000 abstract description 18
- 239000000956 alloy Substances 0.000 abstract description 18
- 230000007797 corrosion Effects 0.000 abstract description 14
- 238000005260 corrosion Methods 0.000 abstract description 14
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 13
- 229910052725 zinc Inorganic materials 0.000 abstract description 13
- 239000011701 zinc Substances 0.000 abstract description 13
- 229910052721 tungsten Inorganic materials 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 230000005856 abnormality Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 2
- 229910052804 chromium Inorganic materials 0.000 abstract 2
- 229910052759 nickel Inorganic materials 0.000 abstract 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000007751 thermal spraying Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 10
- 239000011159 matrix material Substances 0.000 description 5
- 238000005275 alloying Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910001182 Mo alloy Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000143973 Libytheinae Species 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 210000004894 snout Anatomy 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、亜鉛溶融メッキ用のポットロールやその軸受
部材、サポートロール、スナウトのようなメッキ浴中に
浸漬された状態で使用される溶融亜鉛メッキ用浴中浸漬
部材に関するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to pot rolls for hot-dip galvanizing, their bearing members, support rolls, and snouts that are used while immersed in a plating bath. This invention relates to a member immersed in a galvanizing bath.
（従来の技術）
自動車用防錆鋼板の溶融亜鉛メッキ処理等に用いられる
亜鉛溶融メッキ用ロールやその軸受部材等の溶融亜鉛メ
ッキ用浴中浸漬部材は、１２Ｃｒ系ステンレスなどのス
テンレス鋼よりなるものが−ａに使用されているが、こ
のようなものは使用中に他物との接触によって浸漬部材
裏面に疵が付いて局部的腐食が生じ、これが製品不良の
原因となるうえに耐久性に乏しいため１週間程度で取替
えなければならない、このような問題点をなくすため溶
融亜鉛メッキ浴中ロールについて本発明者等が特開昭５
９−１５３８７５号公報により開示されているように、
基材裏面に重量％でＷ：１０〜３０％、Ｎｉ：１５％以
下のＣｏ基自溶合金よりなる溶射層を形成したものを先
に提案した。(Prior art) Parts immersed in a bath for hot-dip galvanizing, such as rolls for hot-dip galvanizing and their bearing members used in hot-dip galvanizing treatment of rust-proof steel sheets for automobiles, are made of stainless steel such as 12Cr stainless steel. is used in -a, but during use, contact with other objects causes scratches on the back of the immersed member, causing local corrosion, which not only causes product defects, but also reduces durability. In order to eliminate this problem, the rolls in hot-dip galvanizing baths have to be replaced every week or so due to insufficient galvanizing.
As disclosed by Publication No. 9-153875,
It was previously proposed that a sprayed layer made of a Co-based self-fluxing alloy containing 10 to 30% W and 15% or less Ni by weight was formed on the back surface of the base material.
（発明が解決しようとする問題点）
しかしながら、前記したような溶融亜鉛メッキ浴中ロー
ルは、耐摩耗性と耐食性の点で従来のステンレス系のも
のよりはるか優れたものではあるが、浴成分と反応して
合金層が形成されたり局部的な亜鉛との合金化が見られ
るためこれがロール裏面に凹凸を形成し、この凹凸がメ
ッキ製品裏面に疵を生じさせることとなるため寿命はせ
いぜい１ケ月程度であり、より耐食性、耐久性に優れた
ものとすることが業界において強く要望されていた。(Problems to be Solved by the Invention) However, although the hot-dip galvanized bath rolls described above are far superior to conventional stainless steel rolls in terms of wear resistance and corrosion resistance, Due to the reaction, an alloy layer is formed and local alloying with zinc is observed, which creates unevenness on the back of the roll, and these unevenness cause scratches on the back of the plated product, so the life is only one month at most. There was a strong demand in the industry for something with even better corrosion resistance and durability.
（問題点を解決するための手段）
本発明は前記のような問題点を解決するために種々の研
究を行った結果、従来のＣｏ基合金において形成されて
いた合金層および局部的な亜鉛との合金化の問題や疵つ
きの問題の解決にはＭｏ とＷが効果を発揮することを
発見し、これらの適量を含有させることにより浸漬部材
の裏面異常をなくして長寿命化させるとともに、メッキ
製品の品質を向上させるようにしたもので、浸漬部材本
体の少なくとも裏面が、重量％でＮｉ：１〜１０％、Ｃ
ｒ：１〜１０％、Ｗ：３０〜６０％含有し残部がＭｏか
らなる合金により形成されていることを特徴とするもの
である。(Means for Solving the Problems) As a result of various studies conducted in order to solve the above-mentioned problems, the present invention has been developed to improve the alloy layer and local zinc formation formed in conventional Co-based alloys. It was discovered that Mo and W are effective in solving the problems of alloying and scratching, and by including appropriate amounts of these, it is possible to eliminate abnormalities on the back side of immersed parts and extend the life of plated products. At least the back surface of the immersion member body is made of Ni: 1 to 10%, C: 1 to 10% by weight.
It is characterized by being formed of an alloy containing r: 1 to 10%, W: 30 to 60%, and the remainder being Mo.
本発明では浸漬部材本体の少なくとも裏面が前記したよ
うな合金により形成されたものであればよいので、全体
を前記合金により作られたものの外、５ＵＳ−３０４な
どで作られた主体裏面に前記合金の溶射被膜を形成する
ようにしてもよい。In the present invention, at least the back surface of the immersion member main body may be made of the above-mentioned alloy. Alternatively, a sprayed coating may be formed.
以下、浸漬部材本体の少なくとも裏面を形成する合金の
各成分を前記した範囲に限定した理由は次の通りである
。Hereinafter, the reason why each component of the alloy forming at least the back surface of the immersion member body is limited to the above-mentioned ranges is as follows.
Ｎｉ ： Ｎｉ は溶融亜鉛に濡れやすい成分であるが
、マトリックスの靭性を保持しＭｏ合金の溶融亜鉛浴中
での応力腐食を防止する効果がある。しかしながら、Ｍ
ｏの含有量が１％未満ではあまりにも少量で所期の効果
が期待できず、これに対し１０％を越えると耐食性低下
を生じるため、１〜１０％の範囲とした。Ni: Ni is a component that is easily wetted by molten zinc, but has the effect of maintaining the toughness of the matrix and preventing stress corrosion of the Mo alloy in a molten zinc bath. However, M
If the content of o is less than 1%, it is too small and the desired effect cannot be expected, whereas if it exceeds 10%, corrosion resistance will decrease, so it is set in the range of 1 to 10%.
Ｃｒ：Ｃｒはマトリックスを形成する元素であってマト
リックスを強化する効果があり、また、Ｎｉ と同じよ
うにＭｏ合金の溶融亜鉛浴中での応力腐食を防止する効
果がある。しがしながら、Ｃｒの含有量が１％未満では
あまりにも少量で所期の効果が期待できず、これに対し
て１０％を越えるとマトリックスの脆化が生じるため、
１〜１０％の範囲とした。Cr: Cr is an element that forms a matrix and has the effect of reinforcing the matrix, and, like Ni, has the effect of preventing stress corrosion of Mo alloys in a molten zinc bath. However, if the Cr content is less than 1%, it is too small and the desired effect cannot be expected, whereas if it exceeds 10%, the matrix becomes brittle.
The range was 1 to 10%.
Ｗ ：Ｗは溶融亜鉛に濡れにくい性質をもっており、マ
トリックス形成元素としてマトリックスを強化する効果
がある。しかしながら、Ｗの含有量が３０％未満では耐
食性套よび耐摩耗性を増大させる効果に乏しくて浸漬部
材としてはこの点で不適当である。これに対し６０％を
越えると、耐食性は向上するが脆化して割れが生じやす
くなるうえに合金中のＭｏ成分が少なくなるので摺動部
での潤滑化効果が減少し、局部摩耗の原因となるので３
０〜６０％の範囲とした。W: W has the property of being difficult to wet with molten zinc, and has the effect of strengthening the matrix as a matrix-forming element. However, if the W content is less than 30%, the effect of increasing corrosion resistance and wear resistance is poor, and in this respect it is unsuitable for use as an immersion member. On the other hand, when it exceeds 60%, corrosion resistance improves, but it becomes brittle and cracks easily, and the Mo content in the alloy decreases, reducing the lubrication effect on sliding parts and causing local wear. Because it becomes 3
The range was 0 to 60%.
Ｍｏ：Ｍｏは本発明を構成するうえで特に重要な元素で
あって、溶融亜鉛に濡れにくい性質をもっており、潤滑
性を高める効果がある。そのため、他物との接触および
スリップによる合金層の形成や局部的な亜鉛との合金化
を防止でき、摺動部での局部摩耗にも効果を発揮する。Mo: Mo is a particularly important element in constituting the present invention, and has the property of being difficult to wet with molten zinc and has the effect of increasing lubricity. Therefore, formation of an alloy layer due to contact with other objects and slipping and local alloying with zinc can be prevented, and it is also effective against local wear at sliding parts.
次に、本発明に使用される合金と、Ｍｏ合金と、Ｍｏ−
Ｗ合金よりなる直径３．２１の各線材を曲げ角４５°に
変形させた試料を用意し、これを溶融亜鉛浴腐食試験機
の溶融亜鉛浴中に浸漬して実験を行った実験結果を表−
１に示す。Next, the alloy used in the present invention, Mo alloy, and Mo-
The results of an experiment were conducted by preparing a sample made of a W alloy wire with a diameter of 3.21 deformed to a bending angle of 45° and immersing it in a molten zinc bath of a molten zinc bath corrosion tester. −
Shown in 1.
この表−１によれば、本発明に使用される合金は、溶融
亜鉛浴中において優れた耐食性を有していることがわか
る。According to Table 1, it can be seen that the alloy used in the present invention has excellent corrosion resistance in a molten zinc bath.
実施例
次に、前記実験例の試料Ｎｏ４を用いた本発明の実施例
を従来のものと比較して述べる。EXAMPLE Next, an example of the present invention using Sample No. 4 of the above-mentioned experimental example will be described in comparison with a conventional example.
（実施例）
図面に示すように、浸漬部材（１）としてのロール軸受
部材を、基材裏面に本発明に用いる合金組成範囲にある
前記実験例の試料Ｎｏ４の合金が溶射されたものとする
一方、溶融亜鉛メッキ用のポットロール（２）としても
同種の合金が基材裏面に溶射されものを使用して自動車
用鋼板用のストリップ（４）の溶融亜鉛メッキ処理を溶
融亜鉛メッキ浴（３）中で行ったところ、浸漬部材（１
＞とじての軸受部材の局部摩耗が少なく、回転不良によ
る生産トラブルおよび製品への疵入りをなくすとともに
、軸受部材の寿命の延長が顕著であった。なお、この実
施例と従来のものとの使用結果を表−２に示す、この表
から明らかなように、本発明のものは従来のものと比較
して、浸漬部材の耐食性が向上しており、局部摩耗防止
対策として有効であることがわかった。(Example) As shown in the drawings, a roll bearing member serving as the immersion member (1) is assumed to have the alloy of sample No. 4 of the above experimental example, which is within the alloy composition range used in the present invention, sprayed on the back surface of the base material. On the other hand, a hot-dip galvanizing pot roll (2) with the same type of alloy sprayed on the back side of the base material is used to carry out the hot-dip galvanizing process of the automotive steel strip (4) in the hot-dip galvanizing bath (3). ), the immersion member (1
> There was less local wear on the bearing member during closing, eliminating production troubles and product defects due to poor rotation, and significantly extending the life of the bearing member. The usage results of this example and the conventional one are shown in Table 2. As is clear from this table, the corrosion resistance of the immersed member of the present invention is improved compared to the conventional one. This was found to be effective as a measure to prevent local wear.
（発明の効果）
前記説明から明らかなように、本発明によれば耐食性の
点でＣｏ基自溶合金よりなる溶射層を基材裏面に形成し
た従来のものより優れたものとなって局部的な亜鉛との
合金化がなくなり、寿命を５０日程度に延長できるうえ
に生産トラブルが発生することがな（、厳格化する自動
車用防錆鋼板の品質を向上させることができる優れた効
果があり、従来の溶融亜鉛メッキ用浴中浸漬部材の問題
点を解決したものとして業界の発展に寄与するところ極
めて大きいものがある。(Effects of the Invention) As is clear from the above description, the present invention is superior in terms of corrosion resistance to the conventional one in which a sprayed layer made of a Co-based self-fluxing alloy is formed on the back surface of a base material. This eliminates alloying with zinc, which extends the service life to about 50 days and eliminates production troubles. , which has solved the problems of conventional bath immersion members for hot-dip galvanizing, has greatly contributed to the development of the industry.
第１図は本発明の浸漬部材の使用状況の１例を示す説明
図である。
（ｌ）：浸漬部材、（２）：ポットロール、（３）：溶
融亜鉛メッキ浴、（４）＝ストリップ。
第１図
４ストソ、ブーFIG. 1 is an explanatory diagram showing an example of the usage situation of the immersion member of the present invention. (l): immersion member, (2): pot roll, (3): hot-dip galvanizing bath, (4) = strip. Figure 1 4 Stroso, Boo
Claims (1)
１０％、Ｃｒ：１〜１０％、Ｗ：３０〜６０％含有し残
部がＭｏからなる合金により形成されていることを特徴
とする溶融亜鉛メッキ用浴中浸漬部材。At least the back surface of the immersion member main body contains Ni: 1 to 1% by weight
10% of Cr, 1 to 10% of W, and 30 to 60% of W, with the remainder being Mo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26577087A JP2572400B2 (en) | 1987-10-21 | 1987-10-21 | Immersion member in hot-dip galvanizing bath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26577087A JP2572400B2 (en) | 1987-10-21 | 1987-10-21 | Immersion member in hot-dip galvanizing bath |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01108354A true JPH01108354A (en) | 1989-04-25 |
| JP2572400B2 JP2572400B2 (en) | 1997-01-16 |
Family
ID=17421789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26577087A Expired - Lifetime JP2572400B2 (en) | 1987-10-21 | 1987-10-21 | Immersion member in hot-dip galvanizing bath |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2572400B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5619234A (en) * | 1993-03-15 | 1997-04-08 | Kabushiki Kaisha Toshiba | Ink-jet recording apparatus which allows shifting or changing of ink position or direction |
-
1987
- 1987-10-21 JP JP26577087A patent/JP2572400B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5619234A (en) * | 1993-03-15 | 1997-04-08 | Kabushiki Kaisha Toshiba | Ink-jet recording apparatus which allows shifting or changing of ink position or direction |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2572400B2 (en) | 1997-01-16 |
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