JP2693180B2 - Stainless steel plate with excellent water repellency - Google Patents
Stainless steel plate with excellent water repellencyInfo
- Publication number
- JP2693180B2 JP2693180B2 JP63196415A JP19641588A JP2693180B2 JP 2693180 B2 JP2693180 B2 JP 2693180B2 JP 63196415 A JP63196415 A JP 63196415A JP 19641588 A JP19641588 A JP 19641588A JP 2693180 B2 JP2693180 B2 JP 2693180B2
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- water repellency
- steel plate
- weight
- excellent water
- 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 - Fee Related
Links
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、撥水性に優れたFe−Cr−Alステンレス鋼板
に関し、たとえば流し台のカウンタ天板などのように、
撥水性が要求される厨房設備および給排水衛生設備など
に、有利に実施することができる撥水性に優れたステン
レス鋼板に関する。Description: TECHNICAL FIELD The present invention relates to a Fe—Cr—Al stainless steel sheet having excellent water repellency, such as a counter top plate of a sink.
The present invention relates to a stainless steel plate having excellent water repellency, which can be advantageously applied to kitchen equipment and water supply / drainage sanitary equipment that require water repellency.
従来の技術 厨房および一般家庭用として、シンク、調理台、ガス
台、ガスレンジ天板などに使用されているステンレス鋼
板は、一般に、SUS430またはSUS304などの鋼板であり、
その表面仕上げは、一般には2B仕上げであるが、加工状
況によつては2D仕上げが行われ、また光輝焼鈍（BA）仕
上げ、および＃400または＃350研磨仕上げおよびヘアラ
イン仕上げが行われている。2. Description of the Related Art Stainless steel sheets used for kitchens and general households such as sinks, cooktops, gas stoves, and gas cooktops are generally steel sheets such as SUS430 or SUS304.
The surface finish is generally a 2B finish, but depending on the processing conditions, a 2D finish is performed, a bright annealing (BA) finish, and a # 400 or # 350 polishing finish and a hairline finish are performed.
発明が解決すべき課題 このような従来からのステンレス鋼板では、耐食性は
優れているけれども、撥水性が不充分である。したがつ
て、そのステンレス鋼板の表面に水滴が付着しやすく、
そのため水あかが残り易く、清潔感を保ちにくいという
問題がある。Problems to be Solved by the Invention Such conventional stainless steel sheets have excellent corrosion resistance, but insufficient water repellency. Therefore, water drops tend to adhere to the surface of the stainless steel plate,
Therefore, there is a problem that water marks tend to remain and it is difficult to maintain a clean feeling.
本発明の目的は、水滴などの付着を防いで撥水性を向
上したステンレス鋼板を提供することである。An object of the present invention is to provide a stainless steel plate having improved water repellency by preventing adhesion of water drops and the like.
課題を解決するための手段 本発明は、Fe−Cr−Alステンレス鋼板の液体が接触す
る表面に、酸化処理によつてアルミナウイスカを生成す
ることを特徴とする撥水性に優れたステンレス鋼板であ
る。Means for Solving the Problems The present invention is a stainless steel plate having excellent water repellency, which is characterized in that a surface of a Fe-Cr-Al stainless steel plate in contact with a liquid produces alumina whiskers by an oxidation treatment. .
また本発明では、ステンレス鋼は、Cr12〜28重量％、
Al1〜６重量％を含有することを特徴とする。Further, in the present invention, stainless steel, Cr12 ~ 28 wt%,
It is characterized by containing 1 to 6% by weight of Al.
また本発明では、アルミナウイスカは、0.1μｍ以上
の長さを有することを特徴とする。Further, in the present invention, the alumina whiskers are characterized by having a length of 0.1 μm or more.
作 用 本発明に従えば、Fe−Cr−Alステンレス鋼板の表面に
アルミナウイスカが生成されているので、撥水性を向上
することができるとともに、そのアルミナウイスカによ
つて耐食性もまた向上される。Operation According to the present invention, since the alumina whiskers are formed on the surface of the Fe-Cr-Al stainless steel sheet, the water repellency can be improved, and the alumina whiskers also improve the corrosion resistance.
実施例 第１図は、本発明の一実施例の拡大断面図である。母
材となるFe−Cr−Alステンレス鋼板１の表面に、微細な
突起状のアルミナウイスカ２が酸化処理によつて生成さ
れる。このアルミナウイスカ２によつて、その表面に水
などの液体が接触したときの撥水性が発揮される。Embodiment FIG. 1 is an enlarged sectional view of an embodiment of the present invention. On the surface of the Fe-Cr-Al stainless steel plate 1 which is the base material, fine protruding alumina whiskers 2 are formed by the oxidation treatment. The alumina whiskers 2 exhibit water repellency when a liquid such as water comes into contact with the surface thereof.
Fe−Cr−Alステンレス鋼の成分を次のように限定する
とともに、下記のような表面性状を得ることによつて、
撥水性が向上し、しかも耐食性を向上したステンレス鋼
板を実現することができる。By limiting the components of Fe-Cr-Al stainless steel as follows, by obtaining the following surface texture,
A stainless steel plate having improved water repellency and improved corrosion resistance can be realized.
Cr: Crはステンレス鋼の必須元素であり、12重量％未満で
は耐食性、耐酸化性がなくなる。またCrが28重量％を超
えると、鋼が脆くなり、放射体に加工できなくなるので
12重量％以上、28重量％以下に限定する。Cr: Cr is an essential element of stainless steel, and if it is less than 12% by weight, corrosion resistance and oxidation resistance are lost. If Cr exceeds 28% by weight, the steel becomes brittle and cannot be processed into a radiator.
It is limited to 12% by weight or more and 28% by weight or less.
Al: 1.0重量％未満では高温酸化処理で形成される酸化皮
膜が、Fe、Cr酸化物主体となり、アルミナウイスカが生
成されず、また耐食性がなくなる。Alが多いほど、本発
明の目的を達成することができるが、6.0重量％を超え
ると鋼が脆くなり、鋼板の製造が困難となるため、1.0
重量％以上、6.0重量％以下に限定する。If Al is less than 1.0% by weight, the oxide film formed by high-temperature oxidation treatment mainly contains Fe and Cr oxides, alumina whiskers are not formed, and corrosion resistance is lost. As the amount of Al increases, the object of the present invention can be achieved, but if it exceeds 6.0% by weight, the steel becomes brittle, and it becomes difficult to manufacture a steel sheet.
It is limited to more than 6.0% by weight.
この鋼板にアルミナを形成するに先立ち、表面を粗く
する。この表面粗度を得るために、鋼板の表面にブラス
ト処理を行う。ブラスト処理は、粗度100〜400番のアル
ミナや炭化珪素の砥粒や直径0.05〜1.0mmの鉄球や鉄グ
リツドを投射し、表面粗度をRaでたとえば0.2〜1.0μｍ
以上に粗くする。Prior to forming alumina on this steel sheet, the surface is roughened. To obtain this surface roughness, the surface of the steel sheet is blasted. In the blasting treatment, abrasive grains of alumina or silicon carbide having a roughness of 100 to 400, iron balls or iron grids having a diameter of 0.05 to 1.0 mm are projected, and the surface roughness Ra is, for example, 0.2 to 1.0 μm.
Make it coarser than above.
次に大気などの酸化性雰囲気中で850〜1000℃で１〜
４時間保持して高温酸化処理を行い、表面に長さ0.1μ
ｍ以上のアルミナウイスカを形成させることにより、撥
水性と耐食性を向上することができる。Next, at 850-1000 ℃ in an oxidizing atmosphere such as air,
Hold for 4 hours and perform high temperature oxidation treatment, and the surface length is 0.1μ
Water repellency and corrosion resistance can be improved by forming alumina whiskers of m or more.
この高温酸化処理温度は、850℃未満または1000℃を
超えると、アルミナウイスカが形成されず、酸化皮膜は
平滑なアルミナになり撥水性と耐食性が得られないた
め、850℃以上1000℃以下に限定する。また処理時間は
１時間以上とする。１時間未満の酸化処理ではアルミナ
ウイスカの長さが0.1μｍ以上にならないので、１時間
以上とする。If the temperature of this high-temperature oxidation treatment is lower than 850 ° C or higher than 1000 ° C, alumina whiskers will not be formed, and the oxide film will become smooth alumina and water repellency and corrosion resistance cannot be obtained, so it is limited to 850 ° C or higher and 1000 ° C or lower. To do. The processing time is 1 hour or more. Since the length of the alumina whiskers does not become 0.1 μm or more when the oxidation treatment is performed for less than 1 hour, it is set to 1 hour or more.
ただし、鋼板のAl含有量が３重量％未満の場合や、ブ
ラスト処理の投射速度が遅く、鋼板表面に充分な加工歪
みを与えられない場合、高温酸化処理のみではアルミナ
ウイスカの長さが短く、密度が低いことがある。このと
きには予備酸化処理として、酸素濃度0.1％以下の雰囲
気中に700〜1000℃で10秒以上熱処理すると、鋼板表面
に厚さ1000Å未満の高純度のアルミナ酸化皮膜が形成さ
れ、次に上記高温酸化処理を行うとアルミナウイスカが
生成しやすくなる。However, when the Al content of the steel sheet is less than 3% by weight, or when the projection speed of the blast treatment is slow and sufficient processing strain cannot be given to the steel sheet surface, the length of the alumina whiskers is short only by high temperature oxidation treatment, May have low density. At this time, as a preliminary oxidation treatment, if heat treatment is performed at 700 to 1000 ° C for 10 seconds or more in an atmosphere with an oxygen concentration of 0.1% or less, a high-purity alumina oxide film with a thickness of less than 1000Å is formed on the surface of the steel sheet, and then the high temperature oxidation described above is performed. Alumina whiskers are likely to be formed by the treatment.
上記予備酸化処理においては、雰囲気中の酸素濃度が
0.1％を超えると酸化皮膜にFeやCrが混入し、アルミナ
ウイスカが形成しなくなるので0.1％以下とする。また7
00℃未満や10秒間未満では生成酸化皮膜が薄いので効果
がなく、1000℃を超えると鋼板の結晶粒が粗大化して脆
くなり、加工することが不可能となるので700〜1000℃
で10秒以上に限定する。In the pre-oxidation treatment, the oxygen concentration in the atmosphere
If it exceeds 0.1%, Fe and Cr are mixed in the oxide film, and alumina whiskers do not form, so the content is made 0.1% or less. Also 7
If the temperature is less than 00 ° C or less than 10 seconds, there is no effect because the oxide film formed is thin.
Limit to 10 seconds or more.
本発明に用いるFe−Cr−Alステンレス鋼の成分C,Si,
およびMnは、次のように定められる。Fe-Cr-Al stainless steel components used in the present invention C, Si,
And Mn are defined as follows.
C: Ｃは母材および溶接部の靭性および延性を劣化させ
る。このため本発明の素材を製造する過程で、板切れ、
耳割れ、曲げ割れを生じ、著しく製造性を損なう。その
ためＣを0.03重量％以下に限定する。C: C deteriorates the toughness and ductility of the base material and weld. For this reason, in the process of manufacturing the material of the present invention,
It causes ear cracks and bending cracks and significantly impairs manufacturability. Therefore, C is limited to 0.03% by weight or less.
Si: Siは高温の耐酸化性を向上させるが、母材および溶接
部の延性を著しく阻害するので、1.0重量％以下に限定
する。Si: Si improves the oxidation resistance at high temperatures, but since it significantly impairs the ductility of the base material and the weld, it is limited to 1.0% by weight or less.
Mn: Mnは母材および溶接部の靭性を劣化させ、かつ高温で
耐酸化性を損なうので、1.0重量％以下に限定する。Mn: Mn deteriorates the toughness of the base material and the welded part and impairs the oxidation resistance at high temperatures, so it is limited to 1.0% by weight or less.
一般にFe−Cr−Alステンレス鋼には鋼板の靭性を高め
製造しやすくするためと、耐酸化性を向上させる目的で
0.5重量％までのTi、Nb、Zrを添加したり、酸化皮膜の
耐剥離性を向上させる目的で0.3重量％までのＹ、Ce、L
a、Ndなどの希土類元素を添加したりするが、これらの
元素を添加したFe−Cr−Alステンレス鋼も本発明に好適
である。In general, Fe-Cr-Al stainless steel is used for the purpose of increasing the toughness of the steel sheet and making it easier to manufacture, and for improving the oxidation resistance.
Add Ti, Nb, Zr up to 0.5% by weight or Y, Ce, L up to 0.3% by weight for the purpose of improving the peel resistance of the oxide film.
Although rare earth elements such as a and Nd are added, Fe-Cr-Al stainless steel added with these elements is also suitable for the present invention.
本件発明者の実験結果を述べる。 The experimental results of the present inventor will be described.
撥水性に関して、Cr20重量％、Al5重量％を含有するF
e−Cr−Alステンレス鋼板を光輝焼鈍（BA）仕上げ後、
大気雰囲気で925℃、８時間保持擦ると、表面にアルミ
ナウイスカが長さ２μｍ生成した。この試験片に第２図
のように常温にて水を滴下させ、水滴３の接触角θを測
定したところ、135゜であつた。Regarding water repellency, F containing 20% by weight of Cr and 5% by weight of Al
After bright annealing (BA) finishing of e-Cr-Al stainless steel plate,
After rubbing at 925 ° C. for 8 hours in the air, alumina whiskers having a length of 2 μm were formed on the surface. Water was dropped on this test piece at room temperature as shown in FIG. 2, and the contact angle θ of the water drop 3 was measured and found to be 135 °.
耐食性に関して、前述のアルミナウイスカが形成され
たステンレス鋼板に対して、日本工業規格JIS Z2371塩
水噴霧試験を４時間行つたところ、全く発錆が見られな
かつた。Regarding the corrosion resistance, when the Japanese Industrial Standard JIS Z2371 salt spray test was carried out for 4 hours on the stainless steel plate on which the above-mentioned alumina whiskers were formed, no rust was observed.
本発明は、厨房および一般家庭用として撥水性が要求
される流し台カウンタ天板、シンク、調理台、ガス台、
およびガスレンジ天板に用いることができ、その他広範
囲に撥水性が要求される部分に使用することができる。The present invention provides a sink counter top plate, a sink, a cooking table, a gas table, which is required to have water repellency for kitchens and general households.
It can also be used for a gas range top plate, and can be used for other parts where water repellency is required in a wide range.
発明の効果 以上のように本発明によれば、Fe−Cr−Alステンレス
鋼板の表面にアルミナウイスカを生成することによつ
て、撥水性と耐食性を向上することができ、しかも安価
に量産することが可能になる。As described above, according to the present invention, by forming alumina whiskers on the surface of the Fe-Cr-Al stainless steel sheet, water repellency and corrosion resistance can be improved, and mass production is possible at low cost. Will be possible.
第１図は本発明の一実施例の拡大断面図、第２図は撥水
性を説明するための断面図である。 １……ステンレス鋼板、２……アルミナウイスカ、３…
…水滴FIG. 1 is an enlarged sectional view of an embodiment of the present invention, and FIG. 2 is a sectional view for explaining water repellency. 1 ... Stainless steel plate, 2 ... Alumina whisker, 3 ...
... water drops
───────────────────────────────────────────────────── フロントページの続き (72)発明者 村上 寅太 大阪府大阪市東区平野町５丁目１番地 大阪瓦斯株式会社内 (72)発明者 中野 元 大阪府大阪市東区平野町５丁目１番地 大阪瓦斯株式会社内 (72)発明者 石井 和秀 千葉県千葉市川崎町１番地 川崎製鉄株 式会社技術研究本部内 (72)発明者 広野 種生 東京都千代田区内幸町２丁目２番３号 川崎製鉄株式会社鉄鋼技術本部内 (56)参考文献 特開 平１−279741（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Torata Murakami 5-1, Hirano-cho, Higashi-ku, Osaka City, Osaka Prefecture Osaka Gas Co., Ltd. (72) Inventor Gen Moto Nakano, 5-chome, Hirano-cho, Higashi-ku, Osaka City, Osaka Gas Co., Ltd. (72) Inventor Kazuhide Ishii 1 Kawasaki-cho, Chiba City, Chiba Prefecture Kawasaki Steel Co., Ltd. Corporate Technology Research Division (72) Inventor Hirono Species 2-3 2-3 Uchisaiwaicho, Chiyoda-ku, Tokyo Kawasaki Steel Iron and Steel Engineering Headquarters Co., Ltd. (56) Reference JP-A-1-279741 (JP, A)
Claims (3)
る表面に、酸化処理によつてアルミナウイスカを生成す
ることを特徴とする撥水性に優れたステンレス鋼板。1. A stainless steel sheet having excellent water repellency, which is characterized in that alumina whiskers are produced by an oxidation treatment on the surface of a Fe-Cr-Al stainless steel sheet in contact with a liquid.
６重量％を含有することを特徴とする請求項第１項記載
の撥水性に優れたステンレス鋼板。2. Stainless steel is Cr12-28 wt%, Al1-
6. The stainless steel sheet having excellent water repellency according to claim 1, containing 6% by weight.
を有することを特徴とする請求項第１項記載の撥水性に
優れたステンレス鋼板。3. The stainless steel sheet having excellent water repellency according to claim 1, wherein the alumina whiskers have a length of 0.1 μm or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63196415A JP2693180B2 (en) | 1988-08-05 | 1988-08-05 | Stainless steel plate with excellent water repellency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63196415A JP2693180B2 (en) | 1988-08-05 | 1988-08-05 | Stainless steel plate with excellent water repellency |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0247248A JPH0247248A (en) | 1990-02-16 |
| JP2693180B2 true JP2693180B2 (en) | 1997-12-24 |
Family
ID=16357477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63196415A Expired - Fee Related JP2693180B2 (en) | 1988-08-05 | 1988-08-05 | Stainless steel plate with excellent water repellency |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2693180B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0630744A (en) * | 1992-07-13 | 1994-02-08 | Ndc Co Ltd | Material for keeping freshness of perishable food |
| EP0893476A1 (en) | 1997-07-23 | 1999-01-27 | Daicel Chemical Industries, Ltd. | Thermoplastic resin composition |
| JP2009521660A (en) * | 2005-12-21 | 2009-06-04 | エクソンモービル リサーチ アンド エンジニアリング カンパニー | Corrosion resistant material for suppressing fouling, heat transfer device having improved corrosion resistance and fouling resistance, and method for suppressing fouling |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01279741A (en) * | 1988-05-02 | 1989-11-10 | Osaka Gas Co Ltd | Heat exchange device |
-
1988
- 1988-08-05 JP JP63196415A patent/JP2693180B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0247248A (en) | 1990-02-16 |
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