JP3388882B2 - Blackened Zn-Al alloy plated steel sheet - Google Patents
Blackened Zn-Al alloy plated steel sheetInfo
- Publication number
- JP3388882B2 JP3388882B2 JP13653194A JP13653194A JP3388882B2 JP 3388882 B2 JP3388882 B2 JP 3388882B2 JP 13653194 A JP13653194 A JP 13653194A JP 13653194 A JP13653194 A JP 13653194A JP 3388882 B2 JP3388882 B2 JP 3388882B2
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- plated steel
- blackened
- alloy
- crystal
- 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
【０００１】[0001]
【産業上の利用分野】本発明は、家電製品の部材や建材
に好適な耐候性に優れた黒色化Ｚｎ−Ａｌ系合金めっき
鋼板に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blackened Zn-Al alloy-plated steel sheet having excellent weather resistance, which is suitable as a member for home electric appliances and a building material.
【０００２】[0002]
【従来技術】Ｚｎ−５％Ａｌ合金やＺｎ−５５％Ａｌ合
金のようなＺｎ−Ａｌ系合金をめっきしたＺｎ−Ａｌ系
合金めっき鋼板は、耐食性に優れているので、従来より
家電製品の部材や建材に幅広く使用されているが、家電
製品の部材向けには黒色のものが好まれている。Ｚｎ−
Ａｌ系合金めっき鋼板を黒色化する方法として、一般的
に行われている方法は黒色塗料を塗装する方法である。
しかし、黒色塗膜は太陽光線を吸収し易いため、耐候性
が劣るという問題があった。2. Description of the Related Art Zn-Al alloy-plated steel sheets plated with Zn-Al alloys such as Zn-5% Al alloy and Zn-55% Al alloy are excellent in corrosion resistance, and therefore have been conventionally used as members of home electric appliances. It is widely used for building materials, but black ones are preferred for home appliances. Zn-
A commonly used method for blackening an Al-based alloy-plated steel sheet is to apply a black paint.
However, there is a problem that the black coating film is inferior in weather resistance because it easily absorbs sunlight.
【０００３】[0003]
【発明が解決しようとする課題】本発明はこの耐候性の
問題を解決した黒色化Ｚｎ−Ａｌ系合金めっき鋼板を提
供するものである。DISCLOSURE OF THE INVENTION The present invention provides a blackened Zn-Al alloy plated steel sheet which solves the problem of weather resistance.
【０００４】[0004]
【課題を解決するための手段】本発明は、Ｚｎ−Ａｌ系
合金めっき鋼板の表面に、結晶中にＮｉを１〜３mass％
含有し、結晶粒の大きさが５〜２０μｍで、板面に対し
て（１１１）面と（２２１）面の配向を示す結晶が混在
するリン酸亜鉛結晶を形成し、色差計による明度指数Ｌ
値で２５〜４０にした。According to the present invention , Ni is contained in the crystal in an amount of 1 to 3 mass% on the surface of a Zn-Al alloy plated steel sheet.
Containing, the crystal grain size is 5 to 20 μm, and
Crystals with (111) and (221) orientations are mixed
Zinc phosphate crystals are formed which, lightness colorimeter L
The value was 25-40.
【０００５】[0005]
【作用】本発明では、無機質のリン酸亜鉛結晶で黒色化
してあるので、耐候性に優れている。また、黒色化度が
色差計による明度指数Ｌ値で２５〜４０であると、重厚
感のある外観を呈する。In the present invention, since it is blackened with the inorganic zinc phosphate crystal, it has excellent weather resistance. Further, when the degree of blackening is 25 to 40 as the lightness index L value measured by a color difference meter, a profound appearance is exhibited.
【０００６】リン酸亜鉛結晶による黒色化は、リン酸亜
鉛処理状態により変化するので、本発明者らは黒色化度
が色差計による明度指数Ｌ値で２５〜４０になる結晶状
態を検討した結果、結晶中にＮｉを１〜３mass％含有さ
せ、結晶粒の大きさを５〜２０μｍにするとともに、板
面に対して（１１１）面と（２２１）面の配向を示す結
晶を主成分の（０２０）面と（０４０）面の配向を示す
結晶中に混在させることが必要であることを見いだし
た。Since the blackening due to zinc phosphate crystals changes depending on the zinc phosphate treatment state, the present inventors have examined the crystal state in which the degree of blackening is 25 to 40 as the lightness index L value by a color difference meter. , Containing Ni in an amount of 1 to 3 mass% and having a crystal grain size of 5 to 20 μm, and a crystal whose main component is (111) plane and (221) plane orientation ( It has been found that it is necessary to mix them in a crystal showing the orientation of the (020) plane and the (040) plane.
【０００７】結晶中のＮｉ含有率が１mass％未満である
と、明度指数Ｌ値が前記範囲にならず、３mass％を超え
ると、結晶が粗大化し、密着性が低下する。また、結晶
粒の大きさが５μｍ未満であると、結晶が白色化し、明
度指数Ｌ値が４０を超えてしまう。一方、２０μｍを超
えると、リン酸亜鉛処理の際に処理ムラが発生し、外観
が不均一になる。さらに、板面に対して（１１１）面と
（２２１）面の配向を示す結晶が混在していないと、明
度指数Ｌ値が２５〜４０の範囲より外れてしまう。If the Ni content in the crystal is less than 1 mass%, the lightness index L value does not fall within the above range, and if it exceeds 3 mass%, the crystal becomes coarse and the adhesiveness deteriorates. If the size of the crystal grain is less than 5 μm, the crystal becomes white and the lightness index L value exceeds 40. On the other hand, if it exceeds 20 μm, uneven treatment occurs during the zinc phosphate treatment, resulting in a non-uniform appearance. Further, if the crystals showing the orientations of the (111) plane and the (221) plane are not mixed with the plate surface, the lightness index L value is out of the range of 25 to 40.
【０００８】本発明の黒色化Ｚｎ−Ａｌ系合金めっき鋼
板は、リン酸亜鉛結晶が脆いので、需要家での加工に耐
えるようにクリヤ−塗料を塗装して、結晶を保護するの
が好ましい。塗料としては公知の樹脂のものの使用でよ
く、例えば、エポキシ系、塩化ビニル系、アクリル系、
フッ素系などのものを使用すればよい。塗装厚は５μｍ
未満の場合、リン酸亜鉛結晶の剥離を十分抑制できず、
２５μｍを超えると加工の際に塗膜剥離が生じる恐れが
あるので、５〜２５μｍが適している。In the blackened Zn-Al alloy-plated steel sheet of the present invention, zinc phosphate crystals are brittle, and therefore it is preferable to apply a clear paint to protect the crystals so as to withstand processing by consumers. A known resin may be used as the paint, for example, an epoxy type, a vinyl chloride type, an acrylic type,
Fluorine-based materials may be used. Coating thickness is 5 μm
If less than, it is not possible to sufficiently suppress the peeling of zinc phosphate crystals,
If it exceeds 25 μm, peeling of the coating film may occur during processing, so 5 to 25 μm is suitable.
【０００９】リン酸亜鉛結晶による黒色化は、めっき層
のＺｎ−Ａｌ系合金が２％以下の添加元素（例えば、Ｓ
ｉ、Ｍｇ、Ｌａ、Ｃｅ、Ｃｕ、Ｂｅ、Ｔｉ、Ｃｒ、Ｎｉ
等）を含んでいても、また、不可避的不純物（例えば、
Ｐｂ、Ｓｎ、Ｆｅ等）を含んでいても黒色化できる。The blackening by the zinc phosphate crystal is caused by the addition element (for example, S
i, Mg, La, Ce, Cu, Be, Ti, Cr, Ni
Etc.), but also inevitable impurities (eg,
Even if it contains Pb, Sn, Fe, etc., it can be blackened.
【００１０】[0010]
【実施例】溶融Ｚｎ−５％Ａｌ合金めっき鋼板、溶融Ｚ
ｎ−５５％Ａｌ合金めっき鋼板をＮｉイオン含有浸漬型
リン酸亜鉛処理剤［日本パ−カライジング（株）製パル
ボンド３７］の処理液に浸漬した後、アクリル系樹脂ク
リヤ−塗料を塗装した。なお、リン酸亜鉛結晶の結晶粒
大きさ、結晶配向性、Ｎｉ含有率は浸漬時間、処理液温
度により変化させた。次に、この塗装鋼板の表面を色差
計で測定して、明度指数Ｌ値が２５〜４０のものを○、
４０超を×で評価した。また、試験片に円筒絞り加工試
験（ポンチ径；４０ｍｍφ、絞り比；２：１、しわ押
え；５８８０Ｎ、高さ；１５ｍｍ）を施して、側壁部の
リン酸亜鉛皮膜および塗膜の剥離状態を剥離なし○、一
部剥離△、全面剥離×で評価した。この結果を表１に示
す。[Example] Hot-dip Zn-5% Al alloy plated steel sheet, hot-dip Z
The n-55% Al alloy-plated steel sheet was dipped in a treatment liquid of a Ni ion-containing immersion zinc phosphate treatment agent [Palbond 37 manufactured by Nippon Parkerizing Co., Ltd.] and then an acrylic resin clear paint was applied. The crystal grain size, crystal orientation, and Ni content of the zinc phosphate crystals were changed depending on the immersion time and the treatment liquid temperature. Next, the surface of this coated steel sheet was measured with a color difference meter, and those with a lightness index L value of 25 to 40 were evaluated as
Over 40 was evaluated by x. In addition, a cylindrical drawing test (punching diameter: 40 mmφ, drawing ratio: 2: 1, wrinkle retainer: 5880 N, height: 15 mm) was applied to the test piece to confirm the peeling state of the zinc phosphate coating and coating on the side wall No peeling was evaluated as ○, partial peeling was evaluated as Δ, and entire surface was peeled as ×. The results are shown in Table 1.
【００１１】[0011]
【表１】
（注１）鋼板のＡは溶融Ｚｎ−５％Ａｌ合金めっき鋼
板、Ｂは溶融Ｚｎ−５５％Ａｌ合金めっき鋼板である。
（注２）Ｎｉ含有率はmass％である。[Table 1] (Note 1) A of the steel sheet is a hot-dip Zn-5% Al alloy-plated steel sheet, and B is a hot-dip Zn-55% Al alloy-plated steel sheet. (Note 2) The Ni content is mass%.
【００１２】[0012]
【発明の効果】以上のように、本発明の黒色化Ｚｎ−Ａ
ｌ系合金めっき鋼板は、黒色化皮膜がリン酸亜鉛結晶で
あるので、耐候性に優れている。As described above, the blackened Zn-A of the present invention is used.
The 1-based alloy-plated steel sheet has excellent weather resistance because the blackened film is zinc phosphate crystals.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平１−255675（ＪＰ，Ａ) 特開 昭60−204888（ＪＰ，Ａ) 特開 平５−237450（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C23C 22/00 - 22/86 B05D 3/10 C23C 2/06 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-1-255675 (JP, A) JP-A-60-204888 (JP, A) JP-A-5-237450 (JP, A) (58) Field (Int.Cl. 7 , DB name) C23C 22/00-22/86 B05D 3/10 C23C 2/06
Claims (2)
に、結晶中にＮｉを１〜３mass％含有し、結晶粒の大き
さが５〜２０μｍで、板面に対して（１１１）面と（２
２１）面の配向を示す結晶が混在するリン酸亜鉛結晶を
形成し、色差計による明度指数Ｌ値で２５〜４０にした
ことを特徴とする黒色化Ｚｎ−Ａｌ系合金めっき鋼板。1. The surface of a Zn-Al alloy-plated steel sheet contains 1 to 3 mass% of Ni in the crystal and has a large crystal grain size.
Is 5 to 20 μm, and the (111) plane and (2
21) A blackened Zn-Al alloy-plated steel sheet, characterized in that a zinc phosphate crystal in which crystals exhibiting a plane orientation are mixed and a lightness index L value by a color difference meter is set to 25 to 40.
したことを特徴とする黒色化Ｚｎ−Ａｌ系合金めっき鋼
板。2. A blackened Zn-Al alloy-plated steel sheet having a clear coating film formed on the steel sheet according to claim 1 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13653194A JP3388882B2 (en) | 1994-05-26 | 1994-05-26 | Blackened Zn-Al alloy plated steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13653194A JP3388882B2 (en) | 1994-05-26 | 1994-05-26 | Blackened Zn-Al alloy plated steel sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07316834A JPH07316834A (en) | 1995-12-05 |
| JP3388882B2 true JP3388882B2 (en) | 2003-03-24 |
Family
ID=15177372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13653194A Expired - Fee Related JP3388882B2 (en) | 1994-05-26 | 1994-05-26 | Blackened Zn-Al alloy plated steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3388882B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004360056A (en) * | 2003-06-09 | 2004-12-24 | Nisshin Steel Co Ltd | BLACKENED HOT DIP Zn-Al-Mg BASED ALLOY PLATED STEEL SHEET, AND ITS PRODUCTION METHOD |
-
1994
- 1994-05-26 JP JP13653194A patent/JP3388882B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07316834A (en) | 1995-12-05 |
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Legal Events
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|---|---|---|---|
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Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20021224 |
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