JPS6354793B2 - - Google Patents
Info
- Publication number
- JPS6354793B2 JPS6354793B2 JP61023886A JP2388686A JPS6354793B2 JP S6354793 B2 JPS6354793 B2 JP S6354793B2 JP 61023886 A JP61023886 A JP 61023886A JP 2388686 A JP2388686 A JP 2388686A JP S6354793 B2 JPS6354793 B2 JP S6354793B2
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- acid
- surface treatment
- treatment
- present
- 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
Links
- 238000000034 method Methods 0.000 claims description 29
- 229910001220 stainless steel Inorganic materials 0.000 claims description 15
- 239000010935 stainless steel Substances 0.000 claims description 15
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 14
- 238000004381 surface treatment Methods 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- 235000011007 phosphoric acid Nutrition 0.000 claims description 7
- 239000003973 paint Substances 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 5
- 238000010422 painting Methods 0.000 claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 4
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims 1
- 238000011282 treatment Methods 0.000 description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 239000007788 liquid Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- 229920000298 Cellophane Polymers 0.000 description 1
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000001263 FEMA 3042 Substances 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 1
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Penta-digallate-beta-D-glucose Natural products OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- LRBQNJMCXXYXIU-QWKBTXIPSA-N gallotannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@H]2[C@@H]([C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-QWKBTXIPSA-N 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000000174 gluconic acid Substances 0.000 description 1
- 235000012208 gluconic acid Nutrition 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 229940033123 tannic acid Drugs 0.000 description 1
- 235000015523 tannic acid Nutrition 0.000 description 1
- 229920002258 tannic acid Polymers 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/24—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
- C23C22/33—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds containing also phosphates
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Description
［産業上の利用分野］
本発明は、ステンレス鋼の表面に塗装下地皮膜
を形成するための表面処理方法に関する。
［従来の技術及び問題点］
ステンレス鋼板材の表面処理法としては、蓚酸
塩皮膜化成法、リン酸塩処理液で陰極電解処理し
た後同一処理液でリン酸塩皮膜を化成させる方法
（特公昭54−29979、特公昭57−47277）などがあ
るが、前者は高温長時間を要する浸漬処理法であ
つて、塗装下地としては密着性、耐食性に問題が
あり、後者は電解と化成の２段処理法であつて、
塗装下地としては密着性、耐食性に問題があり、
後者は電解と化成の２段処理法であつて、何れも
作業能率が劣りステンレス鋼シート又はストリツ
プの連続処理には適しない。
また、ステンレス鋼はそれ自体が耐食性を有す
るために表面清浄後塗装する方法が実施されてお
り、この方法では塗装一時密着性に優れてはいる
が、耐水二次密着性が極めて悪いといつた問題を
有する。
［問題点を解決するための手段］
本発明は、以上の現状に鑑みてなされたもので
あつて、表面清浄なステンレス鋼板材を処理液に
低温短時間接触させ、その後水洗することなく乾
燥し、次いで塗装するという高速連続処理に適し
た表面処理方法を提供しようとするものである。
本発明は、クロム酸と、シリカと、PO4、リン
酸の重合物又は縮合物とを含むステンレス鋼用表
面処理方法に関するものである。
シリカは微細粉状のもの又はコロイド状のもの
が好ましく、その濃度は固形分として１〜10ｇ／
で、特に好ましくは２〜５ｇ／である。
次にオルトリン酸、重合リン酸、縮合リン酸の
濃度はＰに換算して0.1〜５ｇ／である。
有機酸又はその誘導体を任意的に含有させるこ
とができ、有機酸としては例えばクエン酸、酒石
酸、グルコン酸、コハク酸、タンニン酸、リンゴ
酸、安息香酸、乳酸等を挙げることができる。
濃度としては0.01〜100ｇ／が好ましく、特
に好ましくは0.1〜５ｇ／である。
任意に添加できる有機高分子化合物としてはエ
ポキシ系、アクリル系、ウレタン系、ポリエチレ
ン系、酢酸ビニル系、塩化ゴム系、ポリビニルピ
ロリドン（PVP）、ポリビニルアルコール
（PVA）等の水系樹脂及びデンプン、ゼラチン等
から１種又は２種以上を選んで用いることがで
き、濃度は固形分として好ましくは0.005〜50
ｇ／であり、特に好ましくは0.01〜５ｇ／で
ある。
又、本発明における表面処理液の濡れ性を向上
させるために該当処理液に界面活性剤を含ませる
ことができ、本発明における表面処理液と相溶性
のあるものであればその種類を特定するものでは
ない。界面活性剤の濃度は0.001〜10ｇ／が好
ましく、特に好ましくは0.01〜0.5ｇ／である。
［作用］
本発明の表面処理方法によると、約15〜35℃の
温度でステンレス鋼板を約20秒以内接触させると
いう極めて簡単な操作で処理を行うことができ、
処理後ステンレス鋼板に付着した余剰の処理液を
例えば絞りロールで絞り、その後板温約70℃で約
２分間熱風乾燥するだけでそのまま塗装すること
ができる。処理液の接触法としては例えば浸漬法
が挙げられるが、その他ロール法、フローコート
法等も使用することができ、此等の方法を特定す
るものではない。かくしてクロム酸、リン酸塩及
びシリカがステンレス鋼表面に強固に結合し塗装
下地として優れた性能を発揮するのである。
［実施例］
以下に実施例により本発明の効果を詳述する。
［実施例］
供試材：JISGステンレス鋼板SUS304系で寸法
は、100×200mmのものを使用した。
処理法：
清 浄→水洗→本発明による処理
アルカリ脱脂（表―１の通り）
→ロール絞り→熱風乾燥
（板温度70℃２分）
塗装法：
以上の処理板を室温に放冷後溶剤エポキシ塗
料（商品名エマコート、富士工業(株)製）をロー
ル塗布したのち24時間常温乾燥し約100μの乾
燥膜厚とした。
試験法：
上記塗装板を１昼夜室温放置後、ゴバン目試
験を行つた。100ケのゴバン目を付けたのちセ
ロテープを圧着し急に引き剥したときのゴバン
目の塗膜の残存目数を示し、もつて一次密着性
を評価した。
100／100…全く塗膜がはく離しない
０／100…完全はく離
別に上記塗装板90℃の温水に10時間浸漬後
取り出して余剰の水を拭き取り１時間室内放
置後に前記と同様のゴバン目試験を行い、も
つて耐水二次密着性を評価した。
比較例
実施例の場合と同一の供試材をアルカリ脱脂水
洗後夫々次の処理を行つた。
比較例１…処理液として表―１の比較例１に記載
の組成のもの（シリカ、アルミナを含まない
もの）を用い、表―１の処理条件で供試材を
処理したのち実施例と同様に行つたもの。
比較例２…処理液として表―１の比較例２に記載
の組成のもの（シリカ、アルミナを含まない
もの）で供試材を表―１の処理条件で処理し
たのち、実施例と同様に行つたもの。
比較例３…供試材を表面清浄後は表面処理皮膜を
形成せず熱風乾燥し、以下実施例と同様に塗
装したもの。
試験結果の考察
本発明の表面処理液方法の実施例によつて得ら
れた塗装下地皮膜を用いた塗装板と比較例の方法
によつて得られた塗装板を比較すると、本発明の
方法によつた場合は耐水二次密着性において全く
欠陥が認められなかつたのに対し、比較例１，２
と表面処理皮膜を形成しなかつた比較例３では、
ゴバン目試験の結果が著しく劣り、本発明の方法
がすぐれていることが判明した。処理方法と試験
結果を次の表に示す。
[Industrial Application Field] The present invention relates to a surface treatment method for forming a coating base film on the surface of stainless steel. [Prior art and problems] Surface treatment methods for stainless steel plates include the oxalate film formation method, and the method of cathodic electrolytic treatment using a phosphate treatment solution and then chemical formation of a phosphate film using the same treatment solution (Tokuko Showa). 54-29979, Japanese Patent Publication No. 57-47277), but the former is a dipping treatment method that requires high temperatures and long periods of time, and has problems with adhesion and corrosion resistance as a paint base, while the latter requires a two-step process of electrolysis and chemical formation. It is a processing method,
As a paint base, there are problems with adhesion and corrosion resistance.
The latter is a two-stage treatment method of electrolysis and chemical formation, and both have poor working efficiency and are not suitable for continuous treatment of stainless steel sheets or strips. In addition, since stainless steel itself has corrosion resistance, a method is used in which the surface is cleaned and then painted. Although this method has excellent temporary adhesion, it has been said that the secondary adhesion to water is extremely poor. have a problem [Means for Solving the Problems] The present invention has been made in view of the above-mentioned current situation, and is a method of bringing a surface-clean stainless steel plate into contact with a treatment liquid at a low temperature for a short period of time, and then drying it without washing with water. The purpose of the present invention is to provide a surface treatment method suitable for high-speed continuous processing of coating, followed by painting. The present invention relates to a method for surface treatment of stainless steel containing chromic acid, silica, PO 4 , and a polymer or condensate of phosphoric acid. Silica is preferably in the form of fine powder or colloid, and its concentration is 1 to 10 g/solid content.
The amount is particularly preferably 2 to 5 g/. Next, the concentration of orthophosphoric acid, polymerized phosphoric acid, and condensed phosphoric acid is 0.1 to 5 g/concentration in terms of P. An organic acid or a derivative thereof may optionally be contained, and examples of the organic acid include citric acid, tartaric acid, gluconic acid, succinic acid, tannic acid, malic acid, benzoic acid, and lactic acid. The concentration is preferably 0.01 to 100 g/, particularly preferably 0.1 to 5 g/. Organic polymer compounds that can be optionally added include water-based resins such as epoxy, acrylic, urethane, polyethylene, vinyl acetate, chlorinated rubber, polyvinylpyrrolidone (PVP), and polyvinyl alcohol (PVA), starch, and gelatin. One type or two or more types can be selected and used from the following, and the concentration is preferably 0.005 to 50 as solid content.
g/, particularly preferably 0.01 to 5 g/. Furthermore, in order to improve the wettability of the surface treatment liquid in the present invention, a surfactant can be included in the treatment liquid, and if it is compatible with the surface treatment liquid in the present invention, the type thereof is specified. It's not a thing. The concentration of the surfactant is preferably 0.001 to 10 g/, particularly preferably 0.01 to 0.5 g/. [Function] According to the surface treatment method of the present invention, the treatment can be carried out with an extremely simple operation of contacting a stainless steel plate at a temperature of about 15 to 35°C for about 20 seconds,
After treatment, the excess treatment liquid adhering to the stainless steel plate can be squeezed out using a squeezing roll, for example, and then the plate can be painted as is by simply drying it with hot air at a temperature of about 70°C for about 2 minutes. Examples of the contact method with the treatment liquid include a dipping method, but other methods such as a roll method and a flow coating method can also be used, and these methods are not limited to these methods. In this way, chromic acid, phosphate, and silica bond firmly to the stainless steel surface, providing excellent performance as a paint base. [Example] The effects of the present invention will be explained in detail with reference to Examples below. [Example] Test material: JISG stainless steel plate SUS304 series with dimensions of 100 x 200 mm was used. Treatment method: Cleaning → Water washing → Treatment according to the present invention Alkaline degreasing (as shown in Table 1) → Roll squeezing → Hot air drying (plate temperature 70°C for 2 minutes) Painting method: After cooling the above treated plate to room temperature, apply solvent epoxy. A paint (trade name: Emmacoat, manufactured by Fuji Kogyo Co., Ltd.) was applied with a roll and then dried at room temperature for 24 hours to give a dry film thickness of about 100μ. Test method: After the above-mentioned coated board was left at room temperature for one day and night, a cross-cut test was conducted. The primary adhesion was evaluated by showing the number of remaining stitches in the coating film when 100 stitches were applied, then cellophane tape was applied and suddenly peeled off, and the primary adhesion was evaluated. 100/100...The coating does not peel off at all 0/100...Complete peeling Separately, the above painted board is immersed in warm water at 90℃ for 10 hours, taken out, wiped off excess water, left indoors for 1 hour, and then subjected to the same goblin test as above. , Water resistance and secondary adhesion were evaluated. Comparative Example The same test materials as in the example were subjected to the following treatments after being degreased with alkaline and washed with water. Comparative Example 1: Using a treatment liquid with the composition shown in Comparative Example 1 in Table 1 (not containing silica or alumina), the sample material was treated under the treatment conditions shown in Table 1, and then treated in the same manner as in the example. The one I went to. Comparative Example 2: A sample material was treated with a treatment liquid having the composition shown in Comparative Example 2 in Table 1 (not containing silica or alumina) under the treatment conditions shown in Table 1, and then treated in the same manner as in the Example. What went. Comparative Example 3: After the surface of the test material was cleaned, it was dried with hot air without forming a surface treatment film, and then painted in the same manner as in the example. Consideration of test results Comparing the coated board using the coating base film obtained by the example of the surface treatment liquid method of the present invention and the coated board obtained by the method of the comparative example, it is found that the method of the present invention Comparative Examples 1 and 2 showed no defects in water-resistant secondary adhesion in the case of sagging.
In Comparative Example 3 in which no surface treatment film was formed,
It was found that the method of the present invention was superior, as the results of the cross-over test were significantly inferior. The treatment method and test results are shown in the table below.
【表】
［発明の効果］
本発明の表面処理方法により形成された皮膜
は、ステンレス鋼板材の表面に強固に付着しかつ
塗装において耐水二次密着性の優れた塗膜を形成
するのである。[Table] [Effects of the Invention] The film formed by the surface treatment method of the present invention firmly adheres to the surface of a stainless steel plate material and forms a coating film with excellent water-resistant secondary adhesion during painting.
Claims (1)
0.5〜10ｇ／と；シリカ１〜10ｇ／と；オル
トリン酸、重合リン酸、縮合リン酸の群から選ば
れた少なくとも１種でＰに換算して0.1〜0.5ｇ／
を含んだ水溶液を、ステンレス鋼板に塗布し、
さらに乾燥することにより塗装下地皮膜を形成す
ることを特徴とするステンレス鋼板に塗装下地皮
膜を形成するための表面処理方法。 ２ 界面活性剤を0.001〜10ｇ／の範囲で含む
特許請求の範囲第１項記載のステンレス鋼板の表
面処理方法。 ３ 前記界面活性剤を0.01〜0.5ｇ／含む特許
請求の範囲第２項に記載のステンレス鋼板の表面
処理方法。[Claims] 1. Using chromic acid as a base film for painting
0.5 to 10 g/; Silica 1 to 10 g/; At least one selected from the group of orthophosphoric acid, polymerized phosphoric acid, and condensed phosphoric acid, calculated as P, 0.1 to 0.5 g/
An aqueous solution containing is applied to a stainless steel plate,
A surface treatment method for forming a paint base film on a stainless steel plate, the method comprising forming a paint base film by further drying. 2. The method for surface treatment of a stainless steel sheet according to claim 1, which contains a surfactant in a range of 0.001 to 10 g/. 3. The method for surface treatment of a stainless steel sheet according to claim 2, wherein the surfactant is contained in an amount of 0.01 to 0.5 g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2388686A JPS62182283A (en) | 1986-02-07 | 1986-02-07 | Surface treating solution for stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2388686A JPS62182283A (en) | 1986-02-07 | 1986-02-07 | Surface treating solution for stainless steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62182283A JPS62182283A (en) | 1987-08-10 |
| JPS6354793B2 true JPS6354793B2 (en) | 1988-10-31 |
Family
ID=12122929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2388686A Granted JPS62182283A (en) | 1986-02-07 | 1986-02-07 | Surface treating solution for stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62182283A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20230130719A (en) | 2021-02-15 | 2023-09-12 | 제이에프이 스틸 가부시키가이샤 | Laser cutting method of steel strip, laser cutting equipment, cold rolling method, and manufacturing method of cold rolled steel strip |
| KR20230130699A (en) | 2021-02-15 | 2023-09-12 | 제이에프이 스틸 가부시키가이샤 | Laser cutting method of steel strip, laser cutting equipment, cold rolling method, and manufacturing method of cold rolled steel strip |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02159384A (en) * | 1988-12-14 | 1990-06-19 | Kawasaki Steel Corp | Stainless steel sheet for coating and coating steel sheet |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5210834A (en) * | 1975-06-02 | 1977-01-27 | Nippon Packaging Kk | Surface treatment of metal |
| JPS5419379A (en) * | 1977-07-14 | 1979-02-14 | Toshiba Corp | Semiconductor device |
| JPS6031903A (en) * | 1983-07-31 | 1985-02-18 | 松下電工株式会社 | Manufacture of irregular woody decorative board |
| JPS6041705A (en) * | 1983-07-21 | 1985-03-05 | シェル・オイル・カンパニ− | Communication cable |
-
1986
- 1986-02-07 JP JP2388686A patent/JPS62182283A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5210834A (en) * | 1975-06-02 | 1977-01-27 | Nippon Packaging Kk | Surface treatment of metal |
| JPS5419379A (en) * | 1977-07-14 | 1979-02-14 | Toshiba Corp | Semiconductor device |
| JPS6041705A (en) * | 1983-07-21 | 1985-03-05 | シェル・オイル・カンパニ− | Communication cable |
| JPS6031903A (en) * | 1983-07-31 | 1985-02-18 | 松下電工株式会社 | Manufacture of irregular woody decorative board |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20230130719A (en) | 2021-02-15 | 2023-09-12 | 제이에프이 스틸 가부시키가이샤 | Laser cutting method of steel strip, laser cutting equipment, cold rolling method, and manufacturing method of cold rolled steel strip |
| KR20230130699A (en) | 2021-02-15 | 2023-09-12 | 제이에프이 스틸 가부시키가이샤 | Laser cutting method of steel strip, laser cutting equipment, cold rolling method, and manufacturing method of cold rolled steel strip |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62182283A (en) | 1987-08-10 |
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