JP2835403B2 - Method for producing Zn or Zn alloy plated stainless steel sheet - Google Patents
Method for producing Zn or Zn alloy plated stainless steel sheetInfo
- Publication number
- JP2835403B2 JP2835403B2 JP14217789A JP14217789A JP2835403B2 JP 2835403 B2 JP2835403 B2 JP 2835403B2 JP 14217789 A JP14217789 A JP 14217789A JP 14217789 A JP14217789 A JP 14217789A JP 2835403 B2 JP2835403 B2 JP 2835403B2
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- steel sheet
- producing
- alloy
- plating 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.)
- Expired - Lifetime
Links
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- Electroplating Methods And Accessories (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、めっき密着性ならびに耐候性に優れたステ
ンレス鋼板の製造に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to the production of stainless steel sheets excellent in plating adhesion and weather resistance.
近年の環境汚染は著しく、アメリカあるいはヨーロッ
パなどでは社会問題となっており、日本においても外装
用建材の腐食が急激に進行して大きな問題となってい
る。また、自動車の車体についても道路の凍結を防止で
きるために食塩が散布されるなど、鋼板に要求される耐
食性は一段と厳しくなっており、従来のステンレス鋼に
さえ錆が生じることから、耐候性を改善した高耐候性ス
テンレス鋼板の開発が望まれていた。In recent years, environmental pollution has been remarkable and has become a social problem in the United States and Europe, and in Japan, corrosion of exterior building materials has rapidly progressed and has become a major problem. In addition, the corrosion resistance required for steel plates is becoming even more severe, such as spraying salt on the body of automobiles to prevent freezing of the road. Development of an improved high weather resistance stainless steel plate has been desired.
このような状況のもとで、ステンレス鋼材の表面をZn
あるいはZn合金で被覆し、被覆層の犠性防食によってス
テンレス鋼板を保護し、耐候性が改良することは既に提
案されている。これにより、ステンレス鋼の耐穴あき
性、耐コスメティックコロージョン性が改善され、Znあ
るいはZn合金めっきが施されたステンレス鋼板が現在、
各方面で用いられ、その量も増大している。Under these circumstances, the surface of stainless steel
Alternatively, it has already been proposed that the stainless steel plate is coated with a Zn alloy to protect the stainless steel plate by sacrificial corrosion protection of the coating layer and the weather resistance is improved. As a result, the perforation resistance and cosmetic corrosion resistance of stainless steel have been improved, and stainless steel sheets plated with Zn or Zn alloy are now available.
It is used in various fields, and its amount is increasing.
しかしながら、ステンレス鋼板は表面に不動態皮膜を
有していることから、ZnあるいはZn合金めっきのめっき
密着性が悪い。特にきびしい成形加工が施されるとめっ
き皮膜が剥離し易くなり、優れた耐候性が得られない問
題があった。そこで、一般的にめっきの前処理として脱
脂、酸洗につづいてNiストライクめっきが施されてい
る。しかし、この方法では用途が限定されるとともに、
経済的に不利である。However, since the stainless steel sheet has a passivation film on the surface, the plating adhesion of Zn or Zn alloy plating is poor. In particular, when severe molding is performed, the plating film is easily peeled off, and there is a problem that excellent weather resistance cannot be obtained. Therefore, Ni strike plating is generally performed after degreasing and pickling as plating pretreatment. However, this method has limited applications and
Economically disadvantaged.
以上のことから、安価でしかもめっき密着性ならびに
耐候性に優れたステンレス鋼板が望まれていた。From the above, a stainless steel plate which is inexpensive and excellent in plating adhesion and weather resistance has been desired.
本発明の目的は従来技術の問題点を解決し、安価でし
かもめっき密着性ならびに耐候性に優れたZnあるいはZn
合金めっきを施したステンレス表面処理鋼板の製造方法
を提供することである。An object of the present invention is to solve the problems of the prior art, and use Zn or Zn which is inexpensive and has excellent plating adhesion and weather resistance.
An object of the present invention is to provide a method for producing a stainless steel sheet having an alloy plating.
本発明はステンレス鋼板にZnあるいはZn合金を電気め
っきする際に、ステンレス鋼板に電解脱脂、酸洗を行
い、その後Znめっき浴あるいはZn合金めっき浴中でステ
ンレス鋼板を陽極として不動態皮膜を活性化する電解処
理を行い、直ちにZnあるいはZn合金めっき浴中で電気め
っきを施すことを特徴とするステンレス表面処理鋼板の
製造方法を提供する。In the present invention, when electroplating a stainless steel sheet with Zn or a Zn alloy, the stainless steel sheet is subjected to electrolytic degreasing and pickling, and then the passivation film is activated using the stainless steel sheet as an anode in a Zn plating bath or a Zn alloy plating bath. The present invention provides a method for producing a stainless steel sheet with a surface treatment, characterized in that an electrolytic treatment is performed and electroplating is immediately performed in a Zn or Zn alloy plating bath.
本発明の方法は、オーステナイト系、フェライト系そ
の他すべてのステンレス鋼に適用できる。The method of the present invention is applicable to austenitic, ferritic and all other stainless steels.
本発明の方法の構成要件のうち、電解脱脂、酸洗、Zn
めっきまたはZn合金めっきの方法は既知のいかなる方法
も採用できる。Among the constituent elements of the method of the present invention, electrolytic degreasing, pickling, Zn
Any known method can be employed for plating or Zn alloy plating.
本発明の製造方法に用いるステンレス鋼板はCrが25％
を越えると本発明の適正な活性化処理を行ってもめっき
密着性が低下するので、Cr含有量は25％以下のものを用
いることが望ましい。The stainless steel sheet used in the production method of the present invention has a Cr content of 25%
If the ratio exceeds the above range, even if the appropriate activation treatment of the present invention is performed, the plating adhesion will be reduced. Therefore, it is desirable to use a Cr content of 25% or less.
Ni含有量はめっき密着性に悪影響を及ぼさないため特
に限定しない。The Ni content is not particularly limited because it does not adversely affect plating adhesion.
電解脱脂は例えば５％のオルソケイ酸ナトリウム溶液
中で浴温40〜70℃のもとで実施する。その後水洗し酸洗
は、例えば５％の塩酸あるいは硫酸溶液中で遂行し、水
洗する。さらに本願発明方法の特徴であるステンレス鋼
板を陽極とする活性化電解処理は、既知ZnまたはZn合金
めっき浴中で遂行され、特別の電解浴を要しない。電解
処理は好ましくは50〜90℃の温度で、１〜1000クーロン
/dm2の電気量で遂行される。The electrolytic degreasing is performed, for example, in a 5% sodium orthosilicate solution at a bath temperature of 40 to 70 ° C. Thereafter, washing with water and pickling are performed in, for example, a 5% hydrochloric acid or sulfuric acid solution, followed by washing with water. Further, the activation electrolytic treatment using a stainless steel plate as an anode, which is a feature of the method of the present invention, is performed in a known Zn or Zn alloy plating bath, and does not require a special electrolytic bath. The electrolysis treatment is preferably at a temperature of 50-90 ° C., 1-1000 coulombs
Performed with an electricity quantity of / dm 2 .
ZnあるいはZn合金めっき浴中での通電量が１クーロン
/dm2未満ではほとんどその効果がない。また通電量が10
00クーロン/dm2を越えても特に好影響はないばかりかめ
っき液中に鋼成分が溶けるためめっき液の汚れが発生し
経済的に不利である。1 coulomb in the Zn or Zn alloy plating bath
Less than / dm 2 has little effect. Also, if the amount of electricity is 10
Even if it exceeds 00 coulomb / dm 2 , there is no particularly good effect, and since the steel component is dissolved in the plating solution, contamination of the plating solution occurs, which is economically disadvantageous.
〔発明の具体的開示〕 以下本発明を実施例によって具体的に説明する。[Specific Disclosure of the Invention] Hereinafter, the present invention will be specifically described with reference to examples.
実施例１〜６ 板厚0.5mmのSUS304冷延ステンレス鋼板を常法で電解
脱脂し、つづいて通常の酸洗を行い、その後第２表に示
すめっき液でステンレス鋼板を陽極とし、第１表に示す
条件で活性化電解処理を行った後、同一めっき液で第２
表に示す条件で電気めっきを施した。これらの試料を密
着に折り曲げ、その部位をセロテープ剥離試験を行い、
めっき層の剥離状態を20倍の顕微鏡で観察した。結果を
第３表に示す。Examples 1 to 6 A SUS304 cold-rolled stainless steel sheet having a thickness of 0.5 mm was electrolytically degreased by a conventional method, followed by ordinary pickling, and then the stainless steel sheet was used as an anode with a plating solution shown in Table 2; After performing the activating electrolytic treatment under the conditions shown in
Electroplating was performed under the conditions shown in the table. Bend these samples in close contact, and perform a cellophane peel test on that part.
The peeling state of the plating layer was observed with a microscope of 20 times. The results are shown in Table 3.
本発明によるめっきはいずれも優れためっき密着性を
示した。All of the platings according to the present invention exhibited excellent plating adhesion.
同じSUS304冷延ステンレス鋼板を第２表に示す浴およ
び条件で、活性化電解処理を施すことなく、ZnおよびZn
合金めっきした。結果は第３表に示す。比較例のめっき
密着性が貧弱である。The same SUS304 cold-rolled stainless steel sheet was treated with Zn and Zn in the bath and conditions shown in Table 2 without activating electrolytic treatment.
Alloy plated. The results are shown in Table 3. The plating adhesion of the comparative example is poor.
SUS316およびSUS430ステンレス鋼板についても同様に
実施したが、本発明によるめっき鋼板は剥離を起さなか
ったが、活性化電解処理を施さないめっき鋼板はめっき
が剥離した。The same process was performed for SUS316 and SUS430 stainless steel sheets. The plated steel sheet according to the present invention did not cause peeling, but the plated steel sheet not subjected to the activating electrolytic treatment peeled.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 渡辺 栄次 大阪府堺市石津西町５ 日新製鋼株式会 社阪神研究所内 (56)参考文献 特開 平１−132792（ＪＰ，Ａ) 特開 昭63−192892（ＪＰ，Ａ) 特開 昭63−11691（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) C25D 5/00 - 7/12────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Eiji Watanabe 5 Ishizu Nishimachi, Sakai City, Osaka Prefecture Nisshin Steel Co., Ltd. Hanshin Laboratory (56) References JP-A-1-132792 (JP, A) JP-A-63 -192892 (JP, A) JP-A-63-11691 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) C25D 5/00-7/12
Claims (2)
あるいはZn合金を電気めっきする際に、ステンレス鋼板
に電解脱脂、酸洗を行い、その後Znめっき浴あるいはZn
合金めっき浴中でステンレス鋼板を陽極として不動態皮
膜を活性化する電解処理を行い、直ちにZnあるいはZn合
金めっき浴中で電気めっきを施すことを特徴とするステ
ンレス表面処理鋼板の製造方法。1. A stainless steel sheet having a Cr content of 25% or less
Alternatively, when electroplating a Zn alloy, a stainless steel plate is subjected to electrolytic degreasing and pickling, and then a Zn plating bath or a Zn
A method for producing a stainless steel surface-treated steel sheet, comprising: performing an electrolytic treatment for activating a passive film using a stainless steel sheet as an anode in an alloy plating bath; and immediately performing electroplating in a Zn or Zn alloy plating bath.
〜90℃のZnめっき浴あるいはZn合金めっき浴中で１〜10
00クーロン/dm2通電して施すものである、請求項１に記
載のステンレス表面処理鋼板の製造方法。2. An electrolytic treatment for activating a passive film is performed at 50 ° C.
1-10 in Zn plating bath or Zn alloy plating bath at ~ 90 ° C
2. The method for producing a stainless steel surface-treated steel sheet according to claim 1, wherein the method is performed by applying a current of 00 coulomb / dm 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14217789A JP2835403B2 (en) | 1989-06-06 | 1989-06-06 | Method for producing Zn or Zn alloy plated stainless steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14217789A JP2835403B2 (en) | 1989-06-06 | 1989-06-06 | Method for producing Zn or Zn alloy plated stainless steel sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0310095A JPH0310095A (en) | 1991-01-17 |
| JP2835403B2 true JP2835403B2 (en) | 1998-12-14 |
Family
ID=15309158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14217789A Expired - Lifetime JP2835403B2 (en) | 1989-06-06 | 1989-06-06 | Method for producing Zn or Zn alloy plated stainless steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2835403B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05239686A (en) * | 1992-02-28 | 1993-09-17 | Sumitomo Metal Ind Ltd | Zn electroplating method for cr steel |
| DE10035102B4 (en) * | 2000-07-19 | 2005-05-04 | Dr.-Ing. Max Schlötter GmbH & Co KG | Process for coating hardened steel or cast iron components with zinc-nickel alloys and coated substrates obtainable by this process |
| JP5806099B2 (en) * | 2011-12-02 | 2015-11-10 | Ｊｆｅスチール株式会社 | Surface treatment method for fuel cell separator |
| JP2014210959A (en) * | 2013-04-19 | 2014-11-13 | 日東電工株式会社 | Plating apparatus, plating method, manufacturing method of wiring circuit board, and wiring circuit board |
-
1989
- 1989-06-06 JP JP14217789A patent/JP2835403B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0310095A (en) | 1991-01-17 |
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