JP2020158802A - Stainless steel material excellent in fingerprint resistance and method for manufacturing the same - Google Patents
Stainless steel material excellent in fingerprint resistance and method for manufacturing the same Download PDFInfo
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- 238000009736 wetting Methods 0.000 description 2
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- 229940117972 triolein Drugs 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Coating With Molten Metal (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
本発明は、耐指紋性に優れるステンレス鋼材およびその製造方法に関する。 The present invention relates to a stainless steel material having excellent fingerprint resistance and a method for producing the same.
普通鋼は、耐食性を付与するためにＡｌ系めっきを設けることが知られている（特許文献１を参照）。それに対し、ステンレス鋼は、普通鋼に比べて耐食性を備えているので、通常、防食用のめっき処理を施さないで、無垢の表面状態で使用される。また、外観上の意匠性や美観を付与するため、あるいは防眩性を付与するため、ヘアライン仕上げ（以下、「ＨＬ仕上げ」と記載することもある。）を施すことがある（特許文献２の段落０００２を参照）。ヘアライン仕上げは、鋼表面を所定の番手の研磨手段により、連続した研磨目が付くように仕上げる処理をいう。ＨＬ仕上げが施されたステンレス鋼材は、建材、電気機器、装飾品などの外装材として広く使用される。 It is known that ordinary steel is provided with Al-based plating in order to impart corrosion resistance (see Patent Document 1). On the other hand, since stainless steel has corrosion resistance as compared with ordinary steel, it is usually used in a solid surface state without being subjected to anticorrosion plating. In addition, a hairline finish (hereinafter, may be referred to as "HL finish") may be applied in order to impart an appearance design and aesthetics, or to impart antiglare properties (Patent Document 2). See paragraph 0002). Hairline finishing refers to a process of finishing a steel surface by a polishing means having a predetermined number so as to have continuous polishing marks. HL-finished stainless steel materials are widely used as exterior materials for building materials, electrical equipment, ornaments, and the like.
無垢で使用されるステンレス鋼材は、その使用環境により指紋が付着すると、指紋模様が浮き上がって目立ちやすいという問題がある。ＨＬ仕上げによる研磨目が付与されたステンレス鋼材においても、この指紋模様の目立ちやすい状況に変わりなかった。 The stainless steel material used in solid has a problem that the fingerprint pattern is raised and easily conspicuous when fingerprints are attached depending on the usage environment. Even in the stainless steel material to which the polished grain was given by the HL finish, the situation where the fingerprint pattern was conspicuous did not change.
本発明は、表面に付着した指紋模様を目立ちにくくして、耐指紋性を改善したステンレス鋼材およびその製造方法を提供することを目的とする。 An object of the present invention is to provide a stainless steel material having improved fingerprint resistance by making the fingerprint pattern adhering to the surface inconspicuous and a method for producing the same.
本発明者らは、上記の課題について検討し、ステンレス鋼材の表面の指紋模様を目立たないようにする点で、白い色感を付与するＡｌ系めっき層を設けるとともに、当該めっき層の上に有機樹脂を含む被覆層を設けることが、耐指紋性にとって効果的であることを見出した。さらに、ステンレス鋼材の表面のＡｌ系めっき層に対してヘアラインを形成した後も、耐指紋性の効果を維持できることを見出して、本発明に至った。具体的には、本発明は、以下のものを提供する。 The present inventors have examined the above problems, and in order to make the fingerprint pattern on the surface of the stainless steel material inconspicuous, an Al-based plating layer that imparts a white color is provided, and an organic plating layer is provided on the plating layer. It has been found that providing a coating layer containing a resin is effective for fingerprint resistance. Furthermore, they have found that the effect of fingerprint resistance can be maintained even after the hairline is formed on the Al-based plating layer on the surface of the stainless steel material, and have reached the present invention. Specifically, the present invention provides the following.
（１）本発明は、Ａｌ系めっき層を有するステンレス鋼材であって、前記Ａｌ系めっき層は、ヘアラインが形成された表面性状を有しており、前記Ａｌ系めっき層の上に有機樹脂を含む被覆層を有する、耐指紋性に優れるステンレス鋼材である。 (1) The present invention is a stainless steel material having an Al-based plating layer, and the Al-based plating layer has a surface texture on which hairlines are formed, and an organic resin is placed on the Al-based plating layer. It is a stainless steel material having a coating layer containing it and having excellent fingerprint resistance.
（２）本発明は、前記Ａｌ系めっき層の付着量は、前記ステンレス鋼材の片面当たりで３０〜２００ｇ／ｍ２である、（１）に記載の耐指紋性に優れるステンレス鋼材である。 (2) The present invention is the stainless steel material having excellent fingerprint resistance according to (1), wherein the adhesion amount of the Al-based plating layer is 30 to 200 g / m 2 per one side of the stainless steel material.
（３）本発明は、前記ヘアラインは、研磨レベルが＃８０〜＃１０００の番手で研磨された表面粗さである、（１）または（２）に記載の耐指紋性に優れるステンレス鋼材である。 (3) In the present invention, the hairline is a stainless steel material having excellent fingerprint resistance according to (1) or (2), which has a surface roughness polished with a polishing level of # 80 to # 1000. ..
（４）本発明は、前記有機樹脂は、ポリエステル系、ウレタン系、アクリル系、ポリオレフィン系およびフッ素系からなる群から選択される少なくとも１種である、（１）〜（３）のいずれかに記載の耐指紋性に優れるステンレス鋼材である。 (4) The present invention comprises any one of (1) to (3), wherein the organic resin is at least one selected from the group consisting of polyester-based, urethane-based, acrylic-based, polyolefin-based and fluorine-based. The described stainless steel material having excellent fingerprint resistance.
（５）本発明は、前記Ａｌ系めっき層を有する前記ステンレス鋼材にヘアライン研磨仕上げ処理を施して、前記めっき層の表面にヘアラインを形成した後、前記めっき層の上に前記有機樹脂を含む被覆層を形成する、（１）〜（４）のいずれかに記載のステンレス鋼材を製造する方法である。 (5) In the present invention, the stainless steel material having the Al-based plating layer is subjected to a hairline polishing finish treatment to form a hairline on the surface of the plating layer, and then the plating layer is coated with the organic resin. The method for producing a stainless steel material according to any one of (1) to (4), which forms a layer.
本発明によれば、ステンレス鋼材の表面の指紋模様を目立たないようにする点で、良好な耐指紋性を有するステンレス鋼材が得られる。また、ステンレス鋼材の表面のＡｌ系めっき層に対してヘアライン研磨が施された後も、この耐指紋性に優れる効果を維持したステンレス鋼材を提供することができる。 According to the present invention, a stainless steel material having good fingerprint resistance can be obtained in that the fingerprint pattern on the surface of the stainless steel material is made inconspicuous. Further, it is possible to provide a stainless steel material that maintains the effect of excellent fingerprint resistance even after hairline polishing is applied to the Al-based plating layer on the surface of the stainless steel material.
以下、本発明の実施形態について説明する。本発明は、これらの記載により限定されるものではない。 Hereinafter, embodiments of the present invention will be described. The present invention is not limited to these descriptions.
本発明は、Ａｌ系めっき層を有するステンレス鋼材であって、前記Ａｌ系めっき層は、ヘアラインが形成された表面性状を有しており、前記Ａｌ系めっき層の上に有機樹脂を含む被覆層を有する、耐指紋性に優れるステンレス鋼材である。 The present invention is a stainless steel material having an Al-based plating layer, and the Al-based plating layer has a surface texture on which hairlines are formed, and a coating layer containing an organic resin on the Al-based plating layer. It is a stainless steel material having excellent fingerprint resistance.
（めっき層）
前記Ａｌ系めっき層の付着量は、ステンレス鋼材の片面当たりで、３０〜２００ｇ／ｍ２であることが好ましい。付着量が３０ｇ／ｍ２未満であると、当該Ａｌ系めっき層によって付与される白色の程度が弱くなり、また、ヘアライン仕上げによってめっき層の下地部分が露出する割合が高まり、鋼指紋模様が目立ちやすさを十分に抑制できない。付着量の増加は、耐指紋性に影響しないけれども、めっき層にヘアライン仕上げを施した際に、めっき層から飛散する微粉末の量が増加して作業環境の悪化を招くおそれがある。そのため、２００ｇ／ｍ２以下の範囲で形成すればよい。
(Plating layer)
The amount of adhesion of the Al-based plating layer is preferably 30 to 200 g / m 2 per one side of the stainless steel material. When the adhesion amount is less than 30 g / m 2 , the degree of whiteness imparted by the Al-based plating layer is weakened, and the proportion of the base portion of the plating layer exposed by the hairline finish is increased, and the steel fingerprint pattern is conspicuous. Ease cannot be suppressed sufficiently. Although the increase in the amount of adhesion does not affect the fingerprint resistance, when the hairline finish is applied to the plating layer, the amount of fine powder scattered from the plating layer may increase, resulting in deterioration of the working environment. Therefore, it may be formed in the range of 200 g / m 2 or less.
Ａｌ系めっき層の組成は、Ａｌ、Ａｌ−Ｓｉ、Ａｌ−Ｚｎ、Ａｌ−Ｚｎ−Ｍｇ、Ａｌ−Ｚｎ−Ｍｇ−Ｃｕ、Ａｌ−Ｍｎ、Ａｌ−Ｍｇ、Ａｌ−Ｍｇ−Ｓｉ、Ａｌ−Ｌｉ、Ａｌ−Ｃｕ等の成分の組み合わせを含む合金組成を選択することができる。 The composition of the Al-based plating layer is Al, Al-Si, Al-Zn, Al-Zn-Mg, Al-Zn-Mg-Cu, Al-Mn, Al-Mg, Al-Mg-Si, Al-Li, An alloy composition containing a combination of components such as Al—Cu can be selected.
（ヘアライン）
ヘアラインは、研磨番手が＃８０〜＃１０００の範囲で研磨された表面粗さであることが好ましい。研磨番手が＃８０未満であると、ヘアラインの表面形態が粗くなり、意匠性や防眩性を付与する程度が低下する。また、ヘアライン仕上げよって、Ａｌ系めっき層の下地部分が露出する割合が高まり、鋼指紋模様の目立ちやすさを十分に抑制できない。他方で、研磨番手が＃１０００を超えると、表面が鏡面状態に近づくため、所望のヘアラインを得ることが困難になる。
(Hairline)
The hairline preferably has a surface roughness polished in the range of # 80 to # 1000. When the polishing count is less than # 80, the surface morphology of the hairline becomes rough, and the degree of imparting design and antiglare is reduced. Further, the hairline finish increases the proportion of the base portion of the Al-based plating layer exposed, and the conspicuousness of the steel fingerprint pattern cannot be sufficiently suppressed. On the other hand, when the polishing count exceeds # 1000, the surface approaches a mirror surface state, and it becomes difficult to obtain a desired hairline.
（有機樹脂の被覆層）
被覆層を形成するための有機樹脂は、ポリエステル系、ウレタン系、アクリル系、ポリオレフィン系およびフッ素系からなる群から選択されることが好ましい。被覆層には、これらの有機樹脂の２種以上を混合して用いることもできる。屋外環境で使用される場合は、耐候性の観点からフッ素系を用いることが好ましい。
(Coating layer of organic resin)
The organic resin for forming the coating layer is preferably selected from the group consisting of polyester-based, urethane-based, acrylic-based, polyolefin-based and fluorine-based. Two or more of these organic resins can be mixed and used for the coating layer. When used in an outdoor environment, it is preferable to use a fluorine-based material from the viewpoint of weather resistance.
（ステンレス鋼材）
本実施形態に係るステンレス鋼材には、オーステナイト系、フェライト系、マルテンサイト系など公知の素材を使用できる。本実施形態に係るステンレス鋼材は、板材、棒材、線材など所望の形状の製品として使用できる。さらにその板材などを加工して所望の形状の製品に適用できる。
(Stainless steel)
As the stainless steel material according to this embodiment, known materials such as austenitic stainless steel, ferrite stainless steel, and martensitic stainless steel can be used. The stainless steel material according to the present embodiment can be used as a product having a desired shape such as a plate material, a bar material, or a wire material. Further, the plate material or the like can be processed and applied to a product having a desired shape.
（製造方法）
本実施形態に係るステンレス鋼材は、Ａｌ系めっき層を有するステンレス鋼材にヘアライン研磨仕上げ処理を施して、前記めっき層の表面にヘアラインを形成した後、前記めっき層の上に有機樹脂を含む被覆層を形成し、製造することができる。
(Production method)
The stainless steel material according to the present embodiment is obtained by subjecting a stainless steel material having an Al-based plating layer to a hairline polishing finish treatment to form a hairline on the surface of the plating layer, and then a coating layer containing an organic resin on the plating layer. Can be formed and manufactured.
ステンレス鋼材の表面にＡｌ系めっき層を形成するめっき方法としては、電気めっき、溶融めっき、蒸着などの公知のめっき手段を用いることができる。 As a plating method for forming an Al-based plating layer on the surface of a stainless steel material, known plating means such as electroplating, hot-dip galvanizing, and thin film deposition can be used.
（ヘアライン研磨仕上げ処理）
Ａｌ系めっき層を有するステンレス鋼材の表面に、ヘアライン研磨仕上げ処理を施す際は、公知の研磨方法を適用できる。例えば、所定の研磨番手を備えたベルトにより行うことができる。
(Hairline polishing finish)
A known polishing method can be applied when the hairline polishing finish treatment is applied to the surface of the stainless steel material having the Al-based plating layer. For example, it can be performed by a belt provided with a predetermined polishing count.
以下、本発明の実施例について説明する。本発明は、以下の実施例に限定されるものではない。 Hereinafter, examples of the present invention will be described. The present invention is not limited to the following examples.
板厚１．０ｍｍのＳＵＳ３０４のステンレス鋼板を基材として、溶融Ａｌ−９質量％Ｓｉめっきにより、片面当たり３０〜１２０ｇ／ｍ２の範囲で選定された付着量のめっき層を有する試験材を作製した。試験材を鏡面仕上げした後、＃８０〜＃３２０の範囲で選定された研磨番手によってヘアライン仕上げを施した。一部の試験材については、ヘアライン仕上げを行わず、２Ｂの光輝焼鈍処理を施した。 Using a SUS304 stainless steel sheet with a plate thickness of 1.0 mm as a base material, a test material having a plating layer with an adhesion amount selected in the range of 30 to 120 g / m 2 per side is produced by molten Al-9 mass% Si plating. did. After the test material was mirror-finished, a hairline finish was applied by a polishing count selected in the range of # 80 to # 320. Some of the test materials were not hairline-finished and were subjected to 2B bright annealing treatment.
その後、ロールコーターにより２μｍ厚みのフッ素系有機樹脂層を被覆した。フッ素系有機樹脂皮膜は、フッ素樹脂系の水系エマルジョン（フッ素樹脂の平均粒径９５ｎｍ）と、４Ａ属金属化合物と、エッチング剤とを混合して水系フッ素樹脂処理液を調整した。フッ素樹脂は、親水性官能基（カルボキシル其及びスルホン酸基）の量が１．８質量％、カルボキシル其／スルホン酸基のモル比が３５、数平均分子量が８４万、フッ素（Ｆ）原子の量が１４質量％のフッ素含有オレフィン樹脂（ヘキサフルオロプロピレン及びフッ化ビニリデンと３−（２−アリロキシブトキシカルボニカル）プロピオン酸及び３−メタクリロイルオキシプロパンスルホン酸との共重合体）を用いた。４Ａ族金族としては、フッ化ジルコニウムアンモニウムを用いた。エッチング剤としては、リン酸二水素アンモニウムを用いた。 Then, a 2 μm-thick fluorine-based organic resin layer was coated with a roll coater. The fluororesin-based organic resin film was prepared by mixing a fluororesin-based aqueous emulsion (average particle size of fluororesin of 95 nm), a metal compound of Group 4A, and an etching agent to prepare an aqueous fluororesin treatment liquid. Fluororesin has a hydrophilic functional group (carboxyl and sulfonic acid group) of 1.8% by mass, a molar ratio of carboxyl and sulfonic acid group of 35, a number average molecular weight of 840,000, and a fluororesin of fluorine (F) atoms. A fluorine-containing olefin resin having an amount of 14% by mass (a copolymer of hexafluoropropylene and vinylidene fluoride and 3- (2-allyloxybutoxycarbonical) propionic acid and 3-methacryloyloxypropanesulfonic acid) was used. Ammonium zirconium fluoride was used as the 4A gold group. Ammonium dihydrogen phosphate was used as the etching agent.
また、比較例として、Ａｌ系めっきを施さなかった試験材、ヘアライン仕上げを施さなかった試験材、有機樹脂層を被覆しなかった試験材を作製した。このように作製した各試験材は、表１〜表３のＮｏ．Ａ１〜Ｎｏ．Ｃ２４として示されており、耐指紋性の評価試験に供した。 Further, as a comparative example, a test material not subjected to Al-based plating, a test material not subjected to hairline finishing, and a test material not coated with an organic resin layer were produced. Each test material prepared in this way is described in No. 1 of Tables 1 to 3. A1 to No. Shown as C24, it was subjected to an evaluation test of fingerprint resistance.
また、希釈剤としてのメトキシプロパノール１０ｇに、トリオレイン１．０ｇを添加しさらにＪＩＳ Ｚ８９０１に定められた試験用粉体１第１１種の関東ローム４００ｍｇを加えて攪拌して、指紋模擬スタンプを作製した。当該スタンプの押圧面の面積は、１１３ｍｍ２であった。 Further, 1.0 g of triolein was added to 10 g of methoxypropanol as a diluent, and 400 mg of Kanto loam of the 11th kind of test powder 1 specified in JIS Z8901 was added and stirred to prepare a fingerprint simulation stamp. did. The area of the pressing surface of the stamp was 113 mm 2 .
（耐指紋性の評価試験）
指紋模擬スタンプを９．８０Ｎの荷重で試験材の表面に押圧した。この押圧された試験材を用いて、以下の手順で色差に関するデータを得た。まず、指紋模擬スタンプの付着部分において任意に面積１５ｍｍ２ の１箇所を選定し、その箇所の色調（Ｅ０）を測定した。次いで、指紋模擬スタンプの付着部分より外側の周囲領域において、それぞれ異なる３箇所の色調（Ｅ１、Ｅ２、Ｅ３）を測定した。そして、上記Ｅ０と上記Ｅ１との色差（ΔＥ１）、上記Ｅ０と上記Ｅ２との色差（ΔＥ２）、上記Ｅ０と上記Ｅ３の色差（ΔＥ３）を算出した。ΔＥ１、ΔＥ２およびΔＥ３を平均して、色差の三点平均値（ΔＥ）とした。ΔＥが１．８０以下であるときを耐指紋性が良好であると判定した。
(Fingerprint resistance evaluation test)
The fingerprint simulation stamp was pressed against the surface of the test material with a load of 9.80 N. Using this pressed test material, data on color difference was obtained by the following procedure. First, one place having an area of 15 mm 2 was arbitrarily selected in the part where the fingerprint simulation stamp was attached, and the color tone (E0) of that place was measured. Next, three different color tones (E1, E2, E3) were measured in the peripheral region outside the portion to which the fingerprint simulation stamp was attached. Then, the color difference between the E0 and the E1 (ΔE1), the color difference between the E0 and the E2 (ΔE2), and the color difference between the E0 and the E3 (ΔE3) were calculated. ΔE1, ΔE2, and ΔE3 were averaged to obtain a three-point average value (ΔE) of the color difference. When ΔE was 1.80 or less, it was judged that the fingerprint resistance was good.
上記の色調Ｅは、ＣＩＥＬＡＢ（Ｌ＊ａ＊ｂ＊表色系）における、明度指数Ｌ＊、クロマネチックス指数ａ＊、ｂ＊によって、Ｅ＝（Ｌ＊２＋ａ＊２＋ｂ＊２）１／２で規定される。上記の色調及び色差は、ＪＩＳ ８７２２（色の測定方法−反射及び透過物体色）に準拠した測定方法により求めた。具体的には、分光測色計（コニカミノルタオプティクス株式会社製「ＣＭ３７００ｄ」）により、色差（ΔＥ）を測定した。 The above color tone E is E = (L * 2 + a * 2 + b * 2 ) 1 depending on the lightness index L *, the chromanetic index a *, and b * in the CIELAB (L * a * b * color system). Specified by / 2 . The above color tone and color difference were determined by a measurement method based on JIS 8722 (color measurement method-reflection and transmission object color). Specifically, the color difference (ΔE) was measured with a spectrophotometer (“CM3700d” manufactured by Konica Minolta Optex Co., Ltd.).
試験材における、めっき付着量（片面ｇ／ｍ２）、ヘアライン仕上げのＨＬ研磨番手（＃）、有機樹脂皮膜の有無、色差ΔＥの試験結果を、表１〜表３に示した。表２の「（光輝）」は、２Ｂ処理を意味する。 Tables 1 to 3 show the test results of the amount of plating adhered (g / m 2 on one side), the HL polishing count (#) for hairline finish, the presence or absence of an organic resin film, and the color difference ΔE in the test material. “(Bright)” in Table 2 means 2B processing.
表１に示すように、本発明の範囲に含まれる試験材Ｎｏ．Ａ１〜Ｎｏ．Ａ１２は、色差ΔＥが１．８０以下であり、指紋付着部とその外側領域との色調の差が小さかった。そのため、試験材の表面を目視したときに指紋模様が目立ちにくく、耐指紋性に優れることが分かった。 As shown in Table 1, the test material No. included in the scope of the present invention. A1 to No. In A12, the color difference ΔE was 1.80 or less, and the difference in color tone between the fingerprint attachment portion and the outer region thereof was small. Therefore, it was found that the fingerprint pattern is inconspicuous when the surface of the test material is visually observed, and the fingerprint resistance is excellent.
それに対し、表２のＮｏ．Ｂ１〜Ｂ１２は、Ａｌ系めっき層を有しない例であり、ステンレス鋼板の表面にヘアライン仕上げを施した試験材（Ｎｏ．Ｂ１〜Ｎｏ．Ｂ５）、当該ヘアライン仕上げを行った後に有機樹脂層を被覆した試験材（Ｎｏ．Ｂ７〜Ｎｏ．Ｂ１１）である。表２に示すように、これらの試験材は、いずれも、色差ΔＥが１．８０を大きく上回り、指紋付着部とその外側領域との色調の差が大きかった。そのため、各試験材の表面の指紋模様が目立って視認され、耐指紋性が劣っていた。また、ヘアライン仕上げに代えて光輝処理を施した試験材（Ｎｏ．Ｂ６、Ｎｏ．１２）についても、上記の例と同様に、色差ΔＥが１．８０を大きく上回り、耐指紋性が劣っていた。 On the other hand, No. in Table 2 B1 to B12 are examples that do not have an Al-based plating layer, and are a test material (No. B1 to No. B5) in which a hairline finish is applied to the surface of a stainless steel sheet, and an organic resin layer is coated after the hairline finish is performed. Test materials (No. B7 to No. B11). As shown in Table 2, the color difference ΔE of each of these test materials greatly exceeded 1.80, and the difference in color tone between the fingerprint-attached portion and the outer region thereof was large. Therefore, the fingerprint pattern on the surface of each test material was conspicuously visually recognized, and the fingerprint resistance was inferior. Further, also in the test materials (No. B6, No. 12) which were subjected to a brilliant treatment instead of the hairline finish, the color difference ΔE greatly exceeded 1.80 and the fingerprint resistance was inferior, as in the above example. ..
また、表３のＮｏ．Ｃ１〜Ｃ２４は、Ａｌ系めっき層を有する例であり、表３に示すように、Ａｌ系めっき層を有するステンレス鋼板である試験材（Ｎｏ．Ｃ１〜Ｎｏ．Ｃ６）、Ａｌ系めっき層を有するステンレス鋼板にヘアライン仕上げを施した試験材（Ｎｏ．Ｃ７〜Ｎｏ．Ｃ１８）、Ａｌ系めっき層を有するステンレス鋼板に有機樹脂層を被覆した試験材（Ｎｏ．Ｃ１９〜Ｎｏ．Ｃ２４）である。表３に示すように、これらの試験材は、いずれも、色差ΔＥが１．８０を大きく上回り、指紋付着部とその外側領域との色調の差が大きかった。そのため、各試験材の表面の指紋模様が目立って視認され、耐指紋性が劣っていた。 In addition, No. in Table 3 C1 to C24 are examples having an Al-based plating layer, and as shown in Table 3, have a test material (No. C1 to No. C6) which is a stainless steel plate having an Al-based plating layer, and an Al-based plating layer. These are a test material (No. C7 to No. C18) in which a hairline finish is applied to a stainless steel sheet, and a test material (No. C19 to No. C24) in which an organic resin layer is coated on a stainless steel sheet having an Al-based plating layer. As shown in Table 3, the color difference ΔE of each of these test materials greatly exceeded 1.80, and the difference in color tone between the fingerprint-attached portion and the outer region thereof was large. Therefore, the fingerprint pattern on the surface of each test material was conspicuously visually recognized, and the fingerprint resistance was inferior.
（意匠性に関する評価）
また、表１の試験材Ｎｏ．Ａ１〜Ｎｏ．Ａ１２について、それらの表面を目視で観察した。いずれも、ヘアラインが形成された表面性状を有するため、意匠性に優れていた。
(Evaluation of design)
In addition, the test material No. in Table 1 A1 to No. For A12, their surfaces were visually observed. All of them have a surface texture on which hairlines are formed, and therefore have excellent designability.
（耐食性に関する評価）
さらに、試験材の耐食性を評価するため、表４に示す条件で、試験材に対して、塩水噴霧、乾燥及び湿潤の各処理をこの順で繰り返す複合サイクル試験（ＣＣＴ）を行った。表４に示すように、塩水噴霧処理は、５質量％ＮａＣｌ濃度の塩水が噴霧された温度３５℃の雰囲気に２時間保持した。乾燥処理は、温度６０℃、湿度３０％の雰囲気に４時間保持した。湿潤処理は、温度５０℃、湿度９５％の雰囲気に２時間保持した。塩水噴霧、乾燥及び湿潤の各処理による１サイクルは８時間で行われた。
(Evaluation of corrosion resistance)
Further, in order to evaluate the corrosion resistance of the test material, a combined cycle test (CCT) was performed on the test material under the conditions shown in Table 4 by repeating each treatment of salt spray, drying and wetting in this order. As shown in Table 4, the salt water spray treatment was maintained for 2 hours in an atmosphere at a temperature of 35 ° C. in which salt water having a concentration of 5% by mass NaCl was sprayed. The drying treatment was carried out in an atmosphere having a temperature of 60 ° C. and a humidity of 30% for 4 hours. The wet treatment was maintained in an atmosphere having a temperature of 50 ° C. and a humidity of 95% for 2 hours. One cycle of salt spray, drying and wetting treatments was performed in 8 hours.
試験材に１５０サイクルのＣＣＴを行った後、試験材の端面からのエッジクリープ量を測定し、得られた測定値により試験材の耐食性を評価した。表１の試験材Ｎｏ．Ａ４（めっき付着量９０ｇ／ｍ２、ＨＬ研磨番手＃１５０）、Ｎｏ．Ａ９（６０ｇ／ｍ２、＃３２０）、Ｎｏ．１０（９０ｇ／ｍ２、＃３２０）を用いて、上記のＣＣＴを行った。いずれの試験材においても、エッジクリープ量が４ｍｍ未満であって、良好な耐食性が維持されることを確認した。 After performing 150 cycles of CCT on the test material, the amount of edge creep from the end face of the test material was measured, and the corrosion resistance of the test material was evaluated from the obtained measured values. Test material No. in Table 1 A4 (plating adhesion amount 90 g / m 2 , HL polishing count # 150), No. A9 (60 g / m 2 , # 320), No. The above CCT was performed using 10 (90 g / m 2 , # 320). It was confirmed that the edge creep amount was less than 4 mm and good corrosion resistance was maintained in all the test materials.
Claims (5)
前記Ａｌ系めっき層は、ヘアラインが形成された表面性状を有しており、
前記Ａｌ系めっき層の上に有機樹脂を含む被覆層を有する、
耐指紋性に優れるステンレス鋼材。 A stainless steel material having an Al-based plating layer.
The Al-based plating layer has a surface texture on which hairlines are formed.
A coating layer containing an organic resin is provided on the Al-based plating layer.
Stainless steel material with excellent fingerprint resistance.
A hairline polishing finish treatment is applied to the stainless steel material having the Al-based plating layer to form a hairline on the surface of the Al-based plating layer, and then a coating layer containing the organic resin is formed on the Al-based plating layer. The method for producing a stainless steel material according to any one of claims 1 to 4.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06212401A (en) * | 1993-01-14 | 1994-08-02 | Sumitomo Metal Ind Ltd | Clad stainless steel sheet |
| JPH07157891A (en) * | 1993-12-08 | 1995-06-20 | Nippon Steel Corp | Manufacturing method of aluminum-chromium alloy plated steel sheet |
| WO2013176219A1 (en) * | 2012-05-23 | 2013-11-28 | 新日鐵住金株式会社 | Al alloy-plated steel material having hairline appearance |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06212401A (en) * | 1993-01-14 | 1994-08-02 | Sumitomo Metal Ind Ltd | Clad stainless steel sheet |
| JPH07157891A (en) * | 1993-12-08 | 1995-06-20 | Nippon Steel Corp | Manufacturing method of aluminum-chromium alloy plated steel sheet |
| WO2013176219A1 (en) * | 2012-05-23 | 2013-11-28 | 新日鐵住金株式会社 | Al alloy-plated steel material having hairline appearance |
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