JP2002060960A - Method for producing balackened galvanized steel sheet excellent in color tone stability - Google Patents
Method for producing balackened galvanized steel sheet excellent in color tone stabilityInfo
- Publication number
- JP2002060960A JP2002060960A JP2000258104A JP2000258104A JP2002060960A JP 2002060960 A JP2002060960 A JP 2002060960A JP 2000258104 A JP2000258104 A JP 2000258104A JP 2000258104 A JP2000258104 A JP 2000258104A JP 2002060960 A JP2002060960 A JP 2002060960A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- color tone
- zinc
- zinc phosphate
- temperature
- 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.)
- Withdrawn
Links
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
- C23C22/78—Pretreatment of the material to be coated
- C23C22/80—Pretreatment of the material to be coated with solutions containing titanium or zirconium compounds
-
- 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
- C23C22/07—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 phosphates
- C23C22/08—Orthophosphates
- C23C22/12—Orthophosphates containing zinc cations
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)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、りん酸亜鉛処理に
よる黒色化亜鉛系めっき鋼板の製造方法の改良に関す
る。The present invention relates to an improvement in a method for producing a blackened zinc-based plated steel sheet by zinc phosphate treatment.
【０００２】[0002]
【従来の技術】建築物の屋根材などの分野では、屋根の
高級感や風合いのため、黒色化亜鉛系めっき鋼板が用い
られており、このような、黒色化亜鉛系めっき鋼板の量
産製造方法として、連続ラインにおいて亜鉛系めっき鋼
板を短時間でりん酸亜鉛処理する技術が、特開平８−２
１８１８１号公報に開示されている。2. Description of the Related Art In the field of roofing materials for buildings and the like, blackened zinc-based plated steel sheets are used because of the high-grade feeling and texture of the roof. Japanese Patent Laid-Open No. 8-2 discloses a technique for treating zinc-based coated steel sheets in a continuous line with zinc phosphate in a short time.
No. 18,181.
【０００３】この方法においては、亜鉛系めっき鋼板を
脱脂して、水洗した後、Ｔｉ水酸化物粒子含有弱アルカ
リ表面調整剤処理液で処理して、Ｎｉイオン含有りん酸
亜鉛処理剤処理液をスプレ−することにより皮膜付着量
が２ｇ／ｍ2以上のリン酸亜鉛皮膜を形成し、鋼板の色
調を明度指数Ｌ値で４５〜６０にするために、前記表面
調整剤処理液のＴｉ水酸化物粒子濃度を３０〜１００ｐ
ｐｍとし、かつ、前記りん酸亜鉛処理剤処理液の全酸度
を、処理液１０ｍｌをフェノ−ルフタレインを指示薬と
して中和するのに要する１／１０ＮのＮａＯＨ水溶液滴
定量が４０〜８０ｍｌ、Ｎｉイオン濃度を３．５〜７．
０ｇ／ｌ、温度を６５℃以上にする工程で製造される。In this method, a zinc-based plated steel sheet is degreased, washed with water, and then treated with a treatment liquid containing a weak alkali surface conditioner containing Ti hydroxide particles to obtain a treatment liquid containing a zinc phosphate containing Ni ions. In order to form a zinc phosphate coating having a coating adhesion amount of 2 g / m 2 or more by spraying and to adjust the color tone of the steel sheet to a lightness index L value of 45 to 60, Ti hydroxide of the surface conditioning agent treatment liquid was used. Object particle concentration 30 ~ 100p
pm, and the total acidity of the zinc phosphate treating agent-treated solution was 40 to 80 ml for a 1 / 10N NaOH aqueous solution required for neutralizing 10 ml of the treated solution with phenolphthalein as an indicator, and the Ni ion concentration. 3.5 to 7.
It is manufactured in a step of setting the temperature to 0 g / l and a temperature of 65 ° C. or higher.
【０００４】[0004]
【発明が解決しようとする課題】この方法は、連続ライ
ンにおいて短時間で黒色化処理が可能なため、生産性に
優れたものであるが、この方法を用い連続ラインで鋼帯
を処理する場合には、希に、鋼帯の長手方向に色調むら
を発生することがあった。この程度の色調むらは、例え
ば屋根材などの外装建材として使用する場合には、外観
上の問題とはならないものであるが、近くで見ると色調
むらとわかるので、品質向上のためには解消する必要が
ある。This method is excellent in productivity because a blackening process can be performed in a short time in a continuous line, but is excellent in productivity. In some cases, uneven color tone may occur in the longitudinal direction of the steel strip. When used as exterior building materials, such as roofing materials, this degree of color unevenness is not a problem in appearance, but it can be seen from a close view as uneven color tone, so it is resolved to improve quality. There is a need to.
【０００５】本発明は、りん酸亜鉛処理による黒色化亜
鉛系めっき鋼板の製造方法において、短時間で色調のむ
らなく均一に黒色化処理することが可能であり、鋼帯間
における色調のむらも解消できる色調安定性に優れた製
造方法を提供するものである。According to the present invention, in a method for producing a blackened zinc-based plated steel sheet by zinc phosphate treatment, it is possible to uniformly blacken the color tone without unevenness in a short time and to eliminate the unevenness of the color tone between steel strips. An object of the present invention is to provide a production method having excellent color tone stability.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、本発明においては、亜鉛めっき鋼板または亜鉛系合
金めっき鋼板を脱脂して、水洗した後、Ｔｉ水酸化物粒
子含有弱アルカリ表面調整剤処理液で処理して、Ｎｉイ
オン含有りん酸亜鉛処理剤処理液をスプレ−することに
より皮膜付着量が２ｇ／ｍ2以上のりん酸亜鉛皮膜を形
成し、鋼板の色調を明度指数Ｌ値で４５〜６０にする黒
色化亜鉛系めっき鋼板の製造方法であって、前記脱脂後
の水洗温度を３０〜６０℃にし、かつ、表面調整剤処理
液の温度を３０〜４５℃にする色調安定性に優れた黒色
化亜鉛系めっき鋼板の製造方法が提供される。According to the present invention, a galvanized steel sheet or a zinc-based alloy-plated steel sheet is degreased, washed with water, and then adjusted for a weak alkali surface containing Ti hydroxide particles. A zinc phosphate coating having a coating weight of 2 g / m 2 or more is formed by spraying a treatment liquid with a zinc phosphate treatment agent containing Ni ions, and the color tone of the steel sheet is determined by a lightness index L value. A method for producing a blackened zinc-coated steel sheet, wherein the washing temperature after degreasing is set to 30 to 60 ° C and the temperature of the surface conditioning agent treatment liquid is set to 30 to 45 ° C. Provided is a method for producing a blackened zinc-based plated steel sheet having excellent resistance.
【０００７】[0007]
【発明の実施の形態】脱脂後の水洗温度を３０〜６０℃
に調整すると、後工程で使用する表面調整剤処理液の温
度低下が抑制されるので、りん酸亜鉛結晶の析出核が鋼
板全面に均一かつ多数形成され緻密な結晶が形成され
る。よって色調の明度指数Ｌ値が均一でばらつきが小さ
くなる。水洗温度が３０℃未満であると表面調整剤処理
液温度が低下し、りん酸亜鉛結晶の核形成が不均一とな
るので、りん酸亜鉛結晶が粗大になり色調の明度指数Ｌ
値が上昇する。水洗温度が６０℃を超えると表面調整剤
処理液温度が上昇し、処理液のＴｉ水酸化物粒子が凝集
沈殿して濃度が低下する。以上のことから水洗水の液温
度は３０〜６０℃とする。BEST MODE FOR CARRYING OUT THE INVENTION The washing temperature after degreasing is 30 to 60 ° C.
In this case, the decrease in the temperature of the surface conditioner treatment solution used in the subsequent step is suppressed, so that the precipitation nuclei of zinc phosphate crystals are formed uniformly and in large numbers on the entire surface of the steel sheet, and dense crystals are formed. Therefore, the lightness index L value of the color tone is uniform and the variation is small. If the washing temperature is lower than 30 ° C., the temperature of the surface treating agent treatment liquid decreases, and the nucleation of zinc phosphate crystals becomes non-uniform, so that the zinc phosphate crystals become coarse and the lightness index L of the color tone L
Value rises. If the washing temperature exceeds 60 ° C., the temperature of the surface conditioning agent treatment liquid increases, and the Ti hydroxide particles of the treatment liquid aggregate and precipitate, and the concentration decreases. From the above, the liquid temperature of the washing water is set to 30 to 60 ° C.
【０００８】表面調整剤処理液の温度を３０〜４５℃に
調整すると、りん酸亜鉛結晶の析出核が鋼板全面に均一
かつ数多く形成されるようになるので、りん酸亜鉛処理
を施したときに、りん酸亜鉛結晶の円滑な成長による緻
密な結晶になり、色調の明度指数Ｌ値が均一、かつ、バ
ラツキが小さくなる。液温度が３０℃未満では核形成が
不均一なため、りん酸亜鉛結晶が粗大になり、色調の明
度指数Ｌ値が上昇し、かつ、バラツキが大きくなる。一
方、液温度が４５℃を超えると色調の明度指数Ｌ値が平
衡になり、かつ、表面調整剤処理液のＴｉ水酸化物粒子
が凝集沈殿して濃度が低下するため表面調整剤の補給が
必要となりコストの増大となる。このため、表面調整剤
処理液の温度は３０〜４５℃とする。If the temperature of the surface conditioner treatment liquid is adjusted to 30 to 45 ° C., the precipitation nuclei of zinc phosphate crystals are formed uniformly and in large numbers on the entire surface of the steel sheet. The zinc phosphate crystal becomes a dense crystal due to the smooth growth, and the lightness index L of the color tone is uniform and the variation is small. If the solution temperature is lower than 30 ° C., the nucleation is not uniform, so that the zinc phosphate crystal becomes coarse, the lightness index L value of the color tone increases, and the dispersion increases. On the other hand, when the liquid temperature exceeds 45 ° C., the lightness index L value of the color tone becomes equilibrium, and the Ti hydroxide particles of the surface conditioner treatment liquid are coagulated and precipitated to lower the concentration. Required and cost increases. For this reason, the temperature of the surface conditioner treatment liquid is set to 30 to 45 ° C.
【０００９】[0009]
【実施例】板厚０．４ｍｍ、板幅９１４ｍｍの溶融Ｚｎ
めっきステンレス鋼帯のに、連続塗装ラインの前処理設
備で次の工程、処理条件でりん酸亜鉛処理を施した。ラ
インスピードは６０ｍ／ｍｉｎである。塗装前処理設備
は、図２に示すように溶融Ｚｎめっきステンレス鋼板の
通板方向（５）に向かって脱脂処理槽（１）、水洗処理
槽（２），表面調整処理槽（３），りん酸亜鉛処理槽
（４）となっている。 （１）脱脂処理 液温６５℃のアルカリ系脱脂剤で５秒間スプレー処理し
た。 （２）水洗処理 水温５０℃の工業用水で５秒間スプレ−処理した。 （３）表面調整処理 Ｔｉ水酸化物粒子含有弱アルカリ表面調整剤［日本パ−
カライジング（株）製、商品名；ＰＬ−Ｚ］をＴｉ水酸
化物粒子濃度が３０〜１００ｐｐｍになるように水で希
釈して、２０〜４５℃で２０秒間浸隻処理した。 （４）りん酸亜鉛処理 Ｎｉイオン含有りん酸亜鉛処理剤［日本パ−カライジン
グ（株）製、商品名；ＰＢ−３７Ｍ］を水でＮｉイオン
が４〜６ｇ／ｌ、１／１０ＮのＮａＯＨ水溶液による滴
定量の全酸度が６０〜８０ｍｌになるように希釈すると
ともに、液温７０℃でスプレ−処理した。 （５）乾燥処理 １００℃の温風で２０秒間乾燥した。EXAMPLE: Fused Zn having a thickness of 0.4 mm and a width of 914 mm
Zinc phosphate treatment was applied to the plated stainless steel strip in the pretreatment equipment of the continuous coating line under the following steps and processing conditions. The line speed is 60 m / min. As shown in FIG. 2, the pre-coating treatment equipment includes a degreasing tank (1), a rinsing tank (2), a surface conditioning tank (3), It is a zinc acid treatment tank (4). (1) Degreasing treatment A spray treatment was performed for 5 seconds with an alkaline degreasing agent at a liquid temperature of 65 ° C. (2) Rinsing treatment A spray treatment was performed for 5 seconds with industrial water having a water temperature of 50 ° C. (3) Surface conditioning treatment Weak alkali surface conditioning agent containing Ti hydroxide particles [Nippon Part
PL-Z] (manufactured by K. Rising Co., Ltd.) was diluted with water so that the concentration of Ti hydroxide particles became 30 to 100 ppm, and immersed at 20 to 45 ° C. for 20 seconds. (4) Zinc phosphate treatment A zinc phosphate treatment agent containing Ni ions [trade name: PB-37M, manufactured by Nippon Parkerizing Co., Ltd.] was treated with water and Ni ions were 4 to 6 g / l, 1 / 10N NaOH. The solution was diluted so that the total acidity determined by titration with an aqueous solution was 60 to 80 ml, and sprayed at a solution temperature of 70 ° C. (5) Drying treatment Drying was performed with hot air at 100 ° C. for 20 seconds.
【００１０】以上で得られた鋼帯の色調を、色差計（ミ
ノルタ製CR-300）により色調のばらつきを評価した。測
定は２０〜４５℃の表面調整液温度の各水準につきｎ数
３０で実施した。明度指数Ｌ値の平均値及び標準偏差３
σと表面調整液温度との関係示す図１から、温度２０℃
では３σが４、温度２５℃では３σが３、温度３０〜４
５℃では３σが２となり、本発明の表面調整液温度範囲
でＬ値のばらつきが低減され色調むらが改善されること
がわかる。The color tone of the steel strip obtained as described above was evaluated for variation in color tone using a color difference meter (CR-300 manufactured by Minolta). The measurement was carried out with n = 30 for each level of the surface conditioning liquid temperature of 20 to 45 ° C. Average value and standard deviation of lightness index L value 3
From FIG. 1 showing the relationship between σ and the surface conditioning liquid temperature, the temperature was 20 ° C.
Is 3 σ, 3 σ is 3 at a temperature of 25 ° C., and the temperature is 30 to 4
At 5 ° C., 3σ is 2, which indicates that the variation of the L value is reduced and the color tone unevenness is improved in the surface conditioning liquid temperature range of the present invention.
【００１１】[0011]
【発明の効果】以上のように、本発明によれば亜鉛系め
っき鋼板を短時間で色調のむらなく均一に黒色化処理す
ることが可能であり、鋼帯間における色調のむらも解消
できるため品質および生産性が向上する。As described above, according to the present invention, it is possible to blacken a galvanized steel sheet uniformly without unevenness of color tone in a short time, and to eliminate unevenness of color tone between steel strips. Productivity is improved.
【図１】明度指数Ｌ値と表面調整液温度の関係を示す
図。FIG. 1 is a diagram showing a relationship between a lightness index L value and a surface conditioning liquid temperature.
【図２】塗装前処理設備を示す図。FIG. 2 is a view showing a coating pretreatment facility.
１：脱脂処理槽 ２：水洗処理槽 ３：表面調整処理槽 ４：リン酸亜鉛処理槽 1: Degreasing tank 2: Rinse tank 3: Surface treatment tank 4: Zinc phosphate treatment tank
───────────────────────────────────────────────────── フロントページの続き (72)発明者 伊藤亮 大阪府堺市石津西町５番地 日新製鋼株式 会社堺製造所内 Ｆターム(参考） 4K026 AA02 AA04 AA07 AA13 AA22 BA04 BA11 BB01 CA16 CA18 CA23 DA06 DA13 DA16 EA08 EA11 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Ryo Ito 5 Ishizu Nishimachi, Sakai City, Osaka Prefecture F-term in Nisshin Steel Co., Ltd. Sakai Works (reference) 4K026 AA02 AA04 AA07 AA13 AA22 BA04 BA11 BB01 CA16 CA18 CA23 DA06 DA13 DA16 EA08 EA11
Claims (1)
鋼板を脱脂して水洗した後、Ｔｉ水酸化物粒子含有弱ア
ルカリ表面調整剤処理液で処理して、Ｎｉイオン含有リ
ン酸亜鉛処理剤処理液をスプレ−することにより皮膜付
着量が２ｇ／ｍ2以上のリン酸亜鉛皮膜を形成し、鋼板
の色調を明度指数Ｌ値で４５〜６０にする黒色化亜鉛系
めっき鋼板の製造方法であって、前記脱脂後の水洗温度
を３０〜６０℃にし、かつ、表面調整剤処理液の温度を
３０〜４５℃にすることを特徴とする色調安定性に優れ
た黒色化亜鉛系めっき鋼板の製造方法。1. A zinc-plated steel sheet or a zinc-based alloy-plated steel sheet is degreased and washed with water, and then treated with a treatment solution of a weakly alkaline surface conditioner containing Ti hydroxide particles to obtain a treatment solution of a zinc phosphate treatment agent containing Ni ions. To form a zinc phosphate coating having a coating weight of 2 g / m 2 or more by spraying, and to adjust the color tone of the steel sheet to a lightness index L value of 45 to 60. A method for producing a blackened zinc-based plated steel sheet having excellent color tone stability, wherein the water washing temperature after the degreasing is set to 30 to 60 ° C and the temperature of the surface conditioning agent treatment liquid is set to 30 to 45 ° C. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000258104A JP2002060960A (en) | 2000-08-23 | 2000-08-23 | Method for producing balackened galvanized steel sheet excellent in color tone stability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000258104A JP2002060960A (en) | 2000-08-23 | 2000-08-23 | Method for producing balackened galvanized steel sheet excellent in color tone stability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002060960A true JP2002060960A (en) | 2002-02-28 |
Family
ID=18746457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000258104A Withdrawn JP2002060960A (en) | 2000-08-23 | 2000-08-23 | Method for producing balackened galvanized steel sheet excellent in color tone stability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002060960A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007117043A1 (en) * | 2006-04-07 | 2007-10-18 | Nippon Paint Co., Ltd. | Surface conditioning composition, method for producing the same, and surface conditioning method |
| EP2302096A3 (en) * | 2009-09-03 | 2012-06-13 | Mazda Motor Corporation | Method for treatment of a metallic surface |
| US10072338B2 (en) | 2006-04-07 | 2018-09-11 | Chemetall Gmbh | Surface conditioning composition, method for producing the same, and surface conditioning method |
| JP2019203181A (en) * | 2018-05-25 | 2019-11-28 | Ｊｆｅスチール株式会社 | Method for producing chemically plated steel sheet |
-
2000
- 2000-08-23 JP JP2000258104A patent/JP2002060960A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007117043A1 (en) * | 2006-04-07 | 2007-10-18 | Nippon Paint Co., Ltd. | Surface conditioning composition, method for producing the same, and surface conditioning method |
| US9096935B2 (en) | 2006-04-07 | 2015-08-04 | Chemetall Gmbh | Surface conditioning composition, method for producing the same, and surface conditioning method |
| US10072338B2 (en) | 2006-04-07 | 2018-09-11 | Chemetall Gmbh | Surface conditioning composition, method for producing the same, and surface conditioning method |
| EP2302096A3 (en) * | 2009-09-03 | 2012-06-13 | Mazda Motor Corporation | Method for treatment of a metallic surface |
| US8506728B2 (en) | 2009-09-03 | 2013-08-13 | Mazda Motor Corporation | Surface treatment method of metal material |
| JP2019203181A (en) * | 2018-05-25 | 2019-11-28 | Ｊｆｅスチール株式会社 | Method for producing chemically plated steel sheet |
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