JPH0811819B2 - Roll for molten metal plating with excellent metal pick-up resistance - Google Patents
Roll for molten metal plating with excellent metal pick-up resistanceInfo
- Publication number
- JPH0811819B2 JPH0811819B2 JP24407686A JP24407686A JPH0811819B2 JP H0811819 B2 JPH0811819 B2 JP H0811819B2 JP 24407686 A JP24407686 A JP 24407686A JP 24407686 A JP24407686 A JP 24407686A JP H0811819 B2 JPH0811819 B2 JP H0811819B2
- Authority
- JP
- Japan
- Prior art keywords
- roll
- resistance
- metal
- pick
- silicic acid
- 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
【発明の詳細な説明】 （産業上の利用分野） 本発明は耐メタルピックアップ性に優れた溶融金属メ
ッキ用ロールに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a roll for hot-dip metal plating excellent in metal pick-up resistance.
（従来の技術及び問題点） 通常、溶融金属メッキ浴直後のロールや浴内ロールは
耐食性、耐摩耗性を向上させるためにその表面に自溶合
金を溶射し、再溶融処理を施した後使用されているが、
溶融金属の付着面に合金化（以下メタルピックアップと
称する）が起り、通板材に傷を付けやすい欠点がある。
これを防止するため、セラミックスなどの溶射ロールが
試みられているが、溶射皮膜内には無数の気孔や微細な
クラックが存在するため、金属浸透および物理的吸着を
生じ、メタルピックアップが生ずる。そこで、溶射皮膜
内の無数の気孔や微細なクラックを封孔処理によって充
填しようという試みが種々なされている。しかし、使用
温度が通常、350℃以上であるため一般の封孔処理剤の
使用温度限界（200℃）を越えている。(Prior art and problems) Usually, rolls immediately after the molten metal plating bath and rolls in the bath are sprayed with a self-fluxing alloy to improve their corrosion resistance and wear resistance, and then used after remelting treatment. Has been
There is a drawback that alloying (hereinafter referred to as a metal pickup) occurs on the surface on which the molten metal is attached, and the passing plate material is easily damaged.
In order to prevent this, thermal spraying rolls of ceramics or the like have been attempted, but since there are numerous pores and fine cracks in the thermal spray coating, metal penetration and physical adsorption occur, and metal pickup occurs. Therefore, various attempts have been made to fill innumerable pores and fine cracks in the thermal spray coating by a sealing treatment. However, since the operating temperature is usually 350 ° C or higher, the operating temperature limit (200 ° C) of the general sealing agent is exceeded.
高温での封孔処理剤として考えられているものに珪酸
ソーダやリン酸アルミニウムなどがあるが、これらは加
熱時に発泡するため溶射皮膜が割れたりはく離したりし
て封孔が不完全になる。これらの点に留意して種々実験
を試みた結果、本発明を完成した。Although there are sodium silicate, aluminum phosphate, and the like that are considered as sealing agents at high temperature, these cause foaming when heated, so that the thermal spray coating cracks or peels off, resulting in incomplete sealing. The present invention has been completed as a result of conducting various experiments while paying attention to these points.
（問題点を解決するための手段） 本発明の要旨とするところは、溶射ロールに純粋な無
水珪酸のコロイド溶液を用いて封孔処理を施したことを
特徴とする耐メタルピックアップ性に優れた溶融金属メ
ッキ用ロールにある。(Means for Solving the Problems) The gist of the present invention is that the spraying roll is subjected to a sealing treatment using a colloidal solution of pure anhydrous silicic acid, which is excellent in metal pickup resistance. It is on a roll for hot metal plating.
本発明で使用する無水珪酸のコロイド溶液は無水珪酸
を超微粒子化して水中に分散させたもので、化学反応に
よる発泡がなく、分散質に水を使用しているため溶射皮
膜内に毛細管現象で容易に浸透する。更に浸透性を高め
るためには分散質にアルコールを１〜20％添加すればよ
い。アルコールを20％以上添加すると溶媒和している無
水珪酸のコロイドは分散質とのイオン結合がアルコール
との結合に置換されるため無水珪酸が塩析する。コロイ
ドを安定化するためにホルムアミド，エチルアミン，エ
タノールアミンのようなアミン類を１〜10％添加するこ
とができる。ただし、10％以上添加すると塩析を起し易
くなる。The colloidal solution of silicic acid anhydride used in the present invention is ultrafine particles of silicic acid anhydride and dispersed in water. There is no foaming due to a chemical reaction, and since water is used as the dispersoid, capillarity occurs in the thermal spray coating. Penetrates easily. To further enhance the permeability, 1-20% of alcohol may be added to the dispersoid. When alcohol is added in an amount of 20% or more, the solvated silicic acid colloid replaces the ionic bond with the dispersoid by the bond with alcohol, and the silicic acid salt is salted out. In order to stabilize the colloid, 1-10% of amines such as formamide, ethylamine and ethanolamine can be added. However, if 10% or more is added, salting out tends to occur.
無水珪酸のコロイド溶液により封孔された溶射ロール
は分散質が気化した後、無水珪酸が溶射皮膜内の気孔お
よび微細なクラックに結晶として封孔されたものにな
る。無水珪酸は化学的に安定で高温下においても酸化、
還元されることなく、封孔効果を失なわない。従って、
加熱時に発泡して皮膜に割れやはく離を発生することも
なく封孔処理を行うことができる。分散質を気化させる
とき、常温で自然気化させるとコロイド溶液の濃度が徐
々に高くなり、析出時に大きな結晶となるため封孔効果
が向上する。以上述べたように本発明の無水珪酸のコロ
イド溶液を用いて封孔処理を行うことにより耐メタルピ
ックアップ性に著しく優れた溶融金属メッキ溶ロールが
えられる。After the dispersoid is vaporized, the thermal spray roll sealed with the colloidal solution of silicic acid anhydride is the one in which the silicic acid anhydride is sealed as crystals in the pores and fine cracks in the thermal spray coating. Silicic anhydride is chemically stable and oxidizes even at high temperatures,
It is not reduced and does not lose its sealing effect. Therefore,
The sealing treatment can be performed without foaming during heating and cracking or peeling of the film. When the dispersoid is vaporized, if it is naturally vaporized at room temperature, the concentration of the colloidal solution gradually increases, and large crystals are formed at the time of precipitation, so that the sealing effect is improved. As described above, by performing the pore-sealing treatment using the silicic acid anhydride colloidal solution of the present invention, a molten metal plating molten roll having extremely excellent metal pickup resistance can be obtained.
以下実施例について説明する。 Examples will be described below.
（実施例） 封孔処理剤は無水珪酸20％のコロイド溶液を用いた。
次に封孔処理工程は、（イ）常温で溶射皮膜表面に塗
布、（ロ）乾燥するまで30分自然放置、（ハ）上記
（イ）（ロ）を10回繰返す、（ニ）表面仕上げ研摩、
（ホ）上記（イ）〜（ハ）を繰返す、（ヘ）サンドペー
パ＃240で溶射皮膜表面に付着した余剰の珪酸の除去、
の各工程からなる。(Example) As a pore-sealing agent, a colloidal solution of silicic acid 20% was used.
Next, in the sealing treatment process, (a) coating on the surface of the thermal spray coating at room temperature, (b) leaving it for 30 minutes to dry, (c) repeating the above (a) and (b) 10 times, (d) surface finishing Polishing,
(E) Repeating the above (a) to (c), (f) removing excess silicic acid adhering to the surface of the thermal spray coating with sandpaper # 240,
It consists of each process.
以上の封孔処理を実機に適用した結果を第１表に示し
た。本発明の無水珪酸封孔処理したロールは封孔処理の
ないロールと比べて、溶融金属の浸入や物理的吸着がな
いため耐メタルピックアップ性が著しく向上し、ロール
の連続使用期間を大幅に延長することができた。Table 1 shows the results of applying the above sealing treatment to an actual machine. The anhydrous silicic acid-sealed roll of the present invention has a significantly improved metal pickup resistance because it has no infiltration or physical adsorption of molten metal and significantly extends the continuous use period of the roll, as compared with a roll having no sealing treatment. We were able to.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 土井 成王 愛知県東海市東海町５−３ 新日本製鐵株 式會社名古屋製鐵所構内日鉄ハード株式会 社内 (56)参考文献 特開 昭54−69259（ＪＰ，Ａ) 特開 昭60−92427（ＪＰ，Ａ) 特開 昭63−100169（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Naruo Doi 5-3 Tokai-cho, Tokai-shi, Aichi Nippon Steel Co., Ltd. Shikikaisha Nagoya Works, Nippon Steel Hard Co., Ltd. In-house (56) References 54-69259 (JP, A) JP-A-60-92427 (JP, A) JP-A-63-100169 (JP, A)
Claims (1)
ロイド溶液を用いて封孔処理を施してなることを特徴と
する耐メタルピックアップ性に優れた溶融金属メッキ用
ロール。1. A roll for hot-dip metal plating excellent in metal pick-up resistance, characterized in that the sprayed coating layer on the roll surface is subjected to sealing treatment using a colloidal solution of silicic acid anhydride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24407686A JPH0811819B2 (en) | 1986-10-16 | 1986-10-16 | Roll for molten metal plating with excellent metal pick-up resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24407686A JPH0811819B2 (en) | 1986-10-16 | 1986-10-16 | Roll for molten metal plating with excellent metal pick-up resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63100162A JPS63100162A (en) | 1988-05-02 |
| JPH0811819B2 true JPH0811819B2 (en) | 1996-02-07 |
Family
ID=17113376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24407686A Expired - Lifetime JPH0811819B2 (en) | 1986-10-16 | 1986-10-16 | Roll for molten metal plating with excellent metal pick-up resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0811819B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0344455A (en) * | 1989-07-12 | 1991-02-26 | Sumitomo Metal Ind Ltd | Highly corrosion resistant roll and its production |
| JP2612983B2 (en) * | 1991-11-06 | 1997-05-21 | 朝日化学工業株式会社 | Roll with corrosion resistance to molten metal |
| JPH06228721A (en) * | 1992-12-02 | 1994-08-16 | Praxair St Technol Inc | Melting resistant metal eroding sealing material and production thereof |
| JP5653084B2 (en) * | 2010-06-25 | 2015-01-14 | 株式会社クボタ | Iron-based member subjected to surface treatment and surface treatment method of iron-based member |
-
1986
- 1986-10-16 JP JP24407686A patent/JPH0811819B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63100162A (en) | 1988-05-02 |
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