JP3256339B2 - Black steel sheet excellent in workability and weldability and method for producing the same - Google Patents
Black steel sheet excellent in workability and weldability and method for producing the sameInfo
- Publication number
- JP3256339B2 JP3256339B2 JP18518193A JP18518193A JP3256339B2 JP 3256339 B2 JP3256339 B2 JP 3256339B2 JP 18518193 A JP18518193 A JP 18518193A JP 18518193 A JP18518193 A JP 18518193A JP 3256339 B2 JP3256339 B2 JP 3256339B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- steel sheet
- weldability
- workability
- 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
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- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は自動車、家電、建材等の
分野の材料として好適な加工性および溶接性に優れた黒
色鋼板およびその製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a black steel sheet excellent in workability and weldability suitable as a material for fields such as automobiles, home appliances, and building materials, and a method for producing the same.
【０００２】[0002]
【従来の技術】自動車、家電、建材等に用いられている
黒色化処理鋼板は、黒色化処理後の着色皮膜を保護する
ため透明な有機樹脂皮膜をあるいは特開平2-217480号公
報に開示されているように着色顔料を添加した有機樹脂
皮膜を数μm 施している。また耐蝕性を得るために樹脂
塗布前にクロメート処理したり、樹脂中にクロム酸を含
有させたりしている。2. Description of the Related Art A blackened steel sheet used for automobiles, home appliances, building materials and the like is disclosed in Japanese Patent Application Laid-Open No. 2-217480, which discloses a transparent organic resin film for protecting a colored film after the blackening treatment. As described above, an organic resin film to which a coloring pigment is added is applied to several μm. In order to obtain corrosion resistance, a chromate treatment is performed before coating the resin, or chromic acid is contained in the resin.
【０００３】このようにして製造された鋼板は美麗な黒
色外観を呈しているが、実際にユーザーで打ち抜きや折
り曲げ、さらには絞り等の加工を施すと、かじりを生じ
たり、絞りきれずに加工の途中で鋼板が割れるなどの不
具合を生じることが多々あった。[0003] The steel plate manufactured in this way has a beautiful black appearance, but if the user actually performs processing such as punching and bending, and further drawing, the galling occurs and the steel sheet is processed without being completely drawn. In many cases, problems such as cracking of the steel plate occurred during the process.
【０００４】[0004]
【発明が解決しようとする課題】本発明の目的は、これ
らの問題点を解決し、加工性および溶接性に優れた黒色
鋼板およびその製造方法を提供することである。SUMMARY OF THE INVENTION It is an object of the present invention to solve these problems and to provide a black steel sheet excellent in workability and weldability, and a method for producing the same.
【０００５】[0005]
【課題を解決するための手段】本発明は、陽極酸化黒色
皮膜を有するZn−Ni合金めっき鋼板の表面に、水分散型
アクリル樹脂からなる溶液に、平均粒子径が 0.5〜10μ
m のポリオレフィンワックスおよびクロム酸を添加した
水溶液を陽極電解処理したZn−Ni合金めっき鋼板上に塗
布し、到達板温80〜 150℃で乾燥処理し、形成した、ア
クリル樹脂 100重量部に対しポリオレフィンワックスを
1〜20重量部およびクロム酸を 0.2〜 1.0重量部含有す
る厚み 0.5〜 2μm の有機樹脂複合皮膜を有することを
特徴とする加工性および溶接性に優れた黒色鋼板であ
り、また本発明は、水分散型アクリル樹脂からなる溶液
の不揮発分 100重量部に対して、平均粒子径が 0.5〜10
μmのポリオレフィンワックスを 1〜20重量部およびク
ロム酸を 0.2〜 1.0重量部添加した水溶液を陽極電解処
理したZn−Ni合金めっき鋼板上に塗布し、到達板温80〜
150℃で乾燥処理し、厚み 0.5〜 2μm の有機樹脂複合
皮膜を形成したことを特徴とする加工性および溶接性に
優れた黒色鋼板の製造方法である。SUMMARY OF THE INVENTION The present invention relates to a water-dispersed Zn-Ni alloy coated steel sheet having an anodized black film.
Acrylic resin solution with average particle size of 0.5 to 10μ
m polyolefin wax and chromic acid added
Aqueous solution is coated on anodic electrolytic Zn-Ni alloy plated steel sheet.
Cloth and dried at a plate temperature of 80-150 ° C, and polyolefin wax was added to 100 parts by weight of the formed acrylic resin.
A black steel sheet excellent in workability and weldability characterized by having an organic resin composite film having a thickness of 0.5 to 2 μm containing 1 to 20 parts by weight and chromic acid of 0.2 to 1.0 part by weight, and the present invention also provides: The average particle diameter is 0.5 to 10 based on 100 parts by weight of the nonvolatile content of the solution comprising the water-dispersed acrylic resin.
An aqueous solution containing 1 to 20 parts by weight of a polyolefin wax of 1 to 20 parts by weight and 0.2 to 1.0 parts by weight of chromic acid was applied on a Zn-Ni alloy-plated steel plate subjected to anodic electrolysis, and the reached plate temperature of 80 to
This is a method for producing a black steel sheet excellent in workability and weldability , characterized in that an organic resin composite film having a thickness of 0.5 to 2 μm is formed by drying at 150 ° C.
【０００６】Zn−Ni合金めっき鋼板の陽極電解処理は、
塩素酸塩溶液中で通常の陽極電解処理を施せばよい。The anodic electrolytic treatment of a Zn—Ni alloy plated steel sheet
Normal anodic electrolysis may be performed in a chlorate solution.
【０００７】[0007]
【作用】本発明者らは、樹脂中にポリオレフィンワック
スを添加することにより加工性に優れた性状を確保する
ことができることを見出した。ポリオレフィンワックス
の平均粒子径を 0.5〜10μm に限定したのは、 0.5μm
未満では加工性に効果がなく、10μm を超えると水分散
性が悪く沈降しやすくなり好ましくないからである。The present inventors have found that by adding a polyolefin wax to a resin, properties excellent in processability can be ensured. The average particle size of polyolefin wax was limited to 0.5 to 10 μm
If it is less than 10 μm, there is no effect on workability, and if it exceeds 10 μm, water dispersibility is poor and sedimentation is likely to occur, which is not preferable.
【０００８】ポリオレフィンワックスの添加量はベース
樹脂固形分 100重量部に対して、 1〜20重量部である。
1 重量部未満では加工性に効果がなく、20重量部を超え
ると成形時にパウダリングが生じやすくなり、型に付着
したりして好ましくない。ベース樹脂の水分散型アクリ
ル樹脂は特に指定されるものではないが、水分散のため
に用いられている乳化剤が塗装後の耐蝕性に悪影響を及
ぼさないよう、あるいはクロム酸を添加した場合樹脂が
固化したり、膜張りなどの悪影響のないものを選ぶ必要
がある。The addition amount of the polyolefin wax is 1 to 20 parts by weight based on 100 parts by weight of the solid content of the base resin.
If the amount is less than 1 part by weight, there is no effect on workability. If the amount is more than 20 parts by weight, powdering tends to occur during molding, and it is not preferable because it adheres to a mold. The water-dispersible acrylic resin of the base resin is not particularly specified, but the emulsifier used for water dispersion does not adversely affect the corrosion resistance after coating, or the resin is added when chromic acid is added. It is necessary to select a material that does not have a bad effect such as solidification or film coating.
【０００９】本発明では、さらにクロム酸を 0.2〜 1.0
重量部添加する。 0.2重量部未満では耐食性が不足し、
1.0重量部を超えると導電性がなくなりスポット溶接が
出来なくなったり、アース性がなくなるなどの不都合が
生じるので好ましくない。以上の組成の溶液を陽極電解
処理後のZn−Ni合金めっき鋼板上にロールコータ等で塗
布し、到達板温80〜 150℃で乾燥処理する。80℃未満で
は乾燥が不充分で密着性が劣化する。また 150℃超えで
は樹脂の劣化が早まるので好ましくない。In the present invention, the chromic acid is further added at 0.2 to 1.0.
Add by weight. If it is less than 0.2 parts by weight, corrosion resistance is insufficient,
Exceeding 1.0 part by weight is not preferable because it causes disadvantages such as loss of conductivity and spot welding and loss of grounding. The solution having the above composition is applied on a Zn—Ni alloy plated steel sheet after the anodic electrolytic treatment by a roll coater or the like, and dried at a reached sheet temperature of 80 to 150 ° C. If the temperature is lower than 80 ° C., the drying is insufficient and the adhesion is deteriorated. If the temperature exceeds 150 ° C., deterioration of the resin is accelerated, which is not preferable.
【００１０】このような樹脂皮膜を厚み 0.5〜 2μm 形
成する。 0.5μm 未満では美麗な外観に仕上がらない。
また 2μm を超えるとスポット溶接を行う場合にナゲッ
トが形成されないばかりでなく、パウダリングも発生し
やすくなり加工性の点でも好ましくない。以下に本発明
の効果について実施例を以て説明する。[0010] Such a resin film is formed to a thickness of 0.5 to 2 µm. If the thickness is less than 0.5 μm, a beautiful appearance cannot be obtained.
On the other hand, if it exceeds 2 μm, not only nuggets are not formed when spot welding is performed, but also powdering is liable to occur, which is not preferable in view of workability. Hereinafter, effects of the present invention will be described with reference to examples.
【００１１】[0011]
１、黒色化処理 Zn−Ni合金めっき鋼板（付着量20ｇ／ｍ2 、Ni含有率12
％、下地鋼板ＳＰＣＣ相当 板厚 0.7mm）を用い、NaCl
O3 50 ｇ／ｌ、Na2SO4 100ｇ／ｌ、ｐＨ1.5 、50℃の黒
化処理液で75Ａ／dm2 、150 Ｃ／dm2 の条件で陽極電解
を行い黒化させたものを樹脂皮覆に供した。樹脂皮覆前
のＬ値＝8 、Ｇ値＝0.5 であった。 ２、樹脂被覆 水分散型アクリル樹脂として、日本パーカライジング
（株）製の3966AX（商品名）を使用した。ポリオレフィ
ンワックスは、サンノプコ（株）製、三洋化成（株）
製、旭化成（株）製のものを使用した。1, blackening treatment Zn-Ni alloy plated steel sheet (coating weight 20 g / m 2, Ni content 12
%, Base plate steel plate equivalent to SPCC, plate thickness 0.7mm)
O 3 50 g / l, Na 2 SO 4 100 g / l, pH 1.5, a blackening treatment solution of 50 ° C., subjected to anodic electrolysis under the conditions of 75 A / dm 2 , 150 C / dm 2 It was subjected to resin skin covering. L value before resin coating = 8, G value = 0.5. 2. Resin coating 3966AX (trade name) manufactured by Nippon Parkerizing Co., Ltd. was used as the water-dispersed acrylic resin. The polyolefin wax is manufactured by Sannopco, Sanyo Chemical Co., Ltd.
Manufactured by Asahi Kasei Corporation.
【００１２】表１に実施例、比較例ならびに耐食性、溶
接性、加工性を示した。耐食性は塩水噴霧試験（JIS Z2
371)により行い 200時間後の白錆発生率５％を基準とし
た。溶接性は加圧力 150Kg 40RのＲ型Cu−Cr電極で7.5k
A の電流を流したときに、通電されてナッゲトが形成さ
れたか否かにより評価した。Table 1 shows Examples, Comparative Examples, and corrosion resistance, weldability and workability. Corrosion resistance is measured by salt spray test (JIS Z2
371), based on a white rust occurrence rate of 5% after 200 hours. Weldability is 7.5k with 150kg 40R R type Cu-Cr electrode
The evaluation was made based on whether or not a nugget was formed when the current of A was passed when the current was passed.
【００１３】加工性のうち絞り性は無塗油の試験片を円
筒深絞り試験機で、しわ押え圧 1.0kg、ポンチ径33mm、
絞り比2.18で加工し割れの有無で、一方パウダリング性
はその時の壁面の樹脂の剥がれの有無で評価した。Of the workability, the drawability is determined by pressing a non-oiled test piece with a cylindrical deep drawing tester using a wrinkle holding pressure of 1.0 kg, a punch diameter of 33 mm,
Processing was performed at a drawing ratio of 2.18, and the presence of cracks was evaluated. On the other hand, the powdering property was evaluated based on the presence or absence of peeling of the resin on the wall surface at that time.
【００１４】[0014]
【表１】 [Table 1]
【００１５】[0015]
【発明の効果】以上のように本発明によれば、加工性が
著しく改善され、耐食性、溶接性も損なうことがない。
これによって家電、建材、自動車用品の生産性が著しく
向上する。As described above, according to the present invention, workability is remarkably improved, and corrosion resistance and weldability are not impaired.
This significantly improves the productivity of home appliances, building materials, and automotive products.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｃ２５Ｄ 11/34 ３０３ Ｃ２５Ｄ 11/34 ３０３ (56)参考文献 特開 平４−313368（ＪＰ，Ａ) 特開 平２−217480（ＪＰ，Ａ) 特開 平３−219086（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B32B 15/08 B05D 7/14 - 7/18 ──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. 7 Identification symbol FI C25D 11/34 303 C25D 11/34 303 (56) References JP-A-4-313368 (JP, A) JP-A-2-217480 (JP, A) JP-A-3-219086 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B32B 15/08 B05D 7 /14-7/18
Claims (2)
っき鋼板の表面に、水分散型アクリル樹脂からなる溶液
に、平均粒子径が 0.5〜10μm のポリオレフィンワック
スおよびクロム酸を添加した水溶液を陽極電解処理した
Zn−Ni合金めっき鋼板上に塗布し、到達板温80〜 150℃
で乾燥処理し、形成した、アクリル樹脂 100重量部に対
しポリオレフィンワックスを 1〜20重量部およびクロム
酸を 0.2〜 1.0重量部含有する厚み 0.5〜 2μm の有機
樹脂複合皮膜を有することを特徴とする加工性および溶
接性に優れた黒色鋼板。1. A solution comprising an aqueous dispersion type acrylic resin on a surface of a Zn—Ni alloy plated steel sheet having an anodized black film.
In addition, a polyolefin wax having an average particle size of 0.5 to 10 μm
Anodized electrolytic solution of chromium and chromic acid
Apply on Zn-Ni alloy plated steel plate, reach plate temperature 80 ~ 150 ℃
Characterized by having a 0.5 to 2 μm thick organic resin composite film containing 1 to 20 parts by weight of polyolefin wax and 0.2 to 1.0 parts by weight of chromic acid based on 100 parts by weight of acrylic resin formed by drying with Processability and melting
Black steel plate with excellent contact .
揮発分 100重量部に対して、平均粒子径が 0.5〜10μm
のポリオレフィンワックスを 1〜20重量部およびクロム
酸を 0.2〜 1.0重量部添加した水溶液を陽極電解処理し
たZn−Ni合金めっき鋼板上に塗布し、到達板温80〜 150
℃で乾燥処理し、厚み 0.5〜 2μm の有機樹脂複合皮膜
を形成したことを特徴とする加工性および溶接性に優れ
た黒色鋼板の製造方法。2. An average particle diameter of 0.5 to 10 μm with respect to 100 parts by weight of a nonvolatile content of a solution comprising an aqueous dispersion type acrylic resin.
An aqueous solution containing 1 to 20 parts by weight of a polyolefin wax and 0.2 to 1.0 parts by weight of chromic acid was applied onto a Zn-Ni alloy-plated steel plate that had been subjected to anodic electrolysis, and the reached plate temperature was 80 to 150.
A method for producing a black steel sheet having excellent workability and weldability , characterized by forming an organic resin composite film having a thickness of 0.5 to 2 μm by drying at a temperature of 400 ° C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18518193A JP3256339B2 (en) | 1993-07-27 | 1993-07-27 | Black steel sheet excellent in workability and weldability and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18518193A JP3256339B2 (en) | 1993-07-27 | 1993-07-27 | Black steel sheet excellent in workability and weldability and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0740501A JPH0740501A (en) | 1995-02-10 |
| JP3256339B2 true JP3256339B2 (en) | 2002-02-12 |
Family
ID=16166264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18518193A Expired - Fee Related JP3256339B2 (en) | 1993-07-27 | 1993-07-27 | Black steel sheet excellent in workability and weldability and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3256339B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19905134A1 (en) * | 1999-02-09 | 2000-09-28 | Hillebrand Walter Gmbh & Co Kg | Passivation process |
| AU779227B2 (en) * | 1999-03-04 | 2005-01-13 | Henkel Corporation | Composition and process for treating metal surfaces |
| US6899770B1 (en) | 1999-03-04 | 2005-05-31 | Henkel Corporation | Composition and process for treating metal surfaces |
-
1993
- 1993-07-27 JP JP18518193A patent/JP3256339B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0740501A (en) | 1995-02-10 |
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|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |