JPH0230376B2 - - Google Patents
Info
- Publication number
- JPH0230376B2 JPH0230376B2 JP61278173A JP27817386A JPH0230376B2 JP H0230376 B2 JPH0230376 B2 JP H0230376B2 JP 61278173 A JP61278173 A JP 61278173A JP 27817386 A JP27817386 A JP 27817386A JP H0230376 B2 JPH0230376 B2 JP H0230376B2
- Authority
- JP
- Japan
- Prior art keywords
- steel
- plating
- hot
- zinc
- 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
- 238000007747 plating Methods 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 2
- 239000000112 cooling gas Substances 0.000 claims description 2
- 239000011701 zinc Substances 0.000 description 17
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 14
- 229910052725 zinc Inorganic materials 0.000 description 14
- 229910001335 Galvanized steel Inorganic materials 0.000 description 8
- 239000008397 galvanized steel Substances 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 238000004040 coloring Methods 0.000 description 4
- 230000001747 exhibiting effect Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- -1 zinc metals Chemical class 0.000 description 2
- 239000010953 base metal Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Landscapes
- Heat Treatment Of Sheet Steel (AREA)
- Coating With Molten Metal (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、鉄鋼に黄色の着色メツキを形成する
ための方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for forming yellow colored plating on steel.
従来技術
従来、溶融亜鉛を用いてメツキを施した溶融亜
鉛メツキ鋼は、建築、土木、電力通信、運輸、農
業及び水産等の部門での材料や施設に至る広範囲
な分野において耐食材料として使用されている。Conventional technology Hot-dip galvanized steel, which is plated using hot-dip zinc, has been used as a corrosion-resistant material in a wide range of fields, including materials and facilities in sectors such as architecture, civil engineering, power communications, transportation, agriculture, and fisheries. ing.
一方、近年、鉄鋼製品の用途の多様化に伴い、
特に、鉄塔、照明用ポール、ガードレール、種々
の仮設用架台、外板等では、従来の溶融亜鉛メツ
キ鋼のような金属色のものよりも周囲の環境に適
合して美観性を呈する着色溶融亜鉛メツキ鋼が要
望されるようになり、今後、建築、土木、電力通
信等のほかに、運輸、農業及び水産等の部門にお
いても着色溶融亜鉛メツキ鋼の巾広い需要が見込
まれる。 On the other hand, in recent years, with the diversification of uses for steel products,
In particular, for steel towers, lighting poles, guardrails, various temporary structures, exterior panels, etc., colored molten zinc is used, which matches the surrounding environment and has a more aesthetic appearance than conventional hot-dip galvanized steel. Galvanized steel is now in demand, and in the future, wide demand for colored hot-dip galvanized steel is expected in sectors such as transportation, agriculture, and fisheries, in addition to construction, civil engineering, power communications, etc.
而して、従来の溶融亜鉛メツキ鋼の着色法とし
ては、該メツキ鋼に塗装により着色することが主
として行われているが、溶融亜鉛メツキ鋼のメツ
キ被膜中のZnは活性なため、塗料の油分の構成
分である脂肪酸が徐々にアルカリ分解して亜鉛石
けんを形成するようになる。そのため、着色に用
いた塗料の皮膜がメツキ皮膜表面に付着せずに剥
離するに至る欠点がある。 Therefore, the conventional coloring method for hot-dip galvanized steel is mainly to color the galvanized steel by painting, but since Zn in the plating film of hot-dip galvanized steel is active, it is difficult to apply the paint. Fatty acids, which are the constituents of oil, gradually decompose with alkaline to form zinc soap. Therefore, there is a drawback that the paint film used for coloring does not adhere to the surface of the plating film and peels off.
したがつて、従来はこのような欠点を防ぐため
に、鉄鋼に溶融亜鉛を用いてメツキを施し、つい
で得られたメツキ鋼を大気中に１〜３週間暴露し
て上記メツキ皮膜上にさらにZn（OH）2、ZnO、
ZnCO3およびZnCl2等の腐食生成物を形成させ、
ついでメツキ鋼の表面をクリーニングした後、着
色のための塗装を施すという煩雑な操作を行うこ
とが余儀なくされている。 Therefore, conventionally, in order to prevent such defects, steel is plated using molten zinc, and the plated steel obtained is then exposed to the atmosphere for 1 to 3 weeks to further coat the plated film with Zn ( OH) 2 , ZnO,
formation of corrosion products such as ZnCO 3 and ZnCl 2 ,
Then, after cleaning the surface of the plated steel, it is necessary to carry out the complicated operation of applying a coating for coloring.
発明が解決しようとする課題
本発明者は、溶融亜鉛メツキ鋼の着色における
叙上の問題点に鑑みなされたものであつて、鉄鋼
材料に溶融亜鉛によるメツキと黄色の特定な色相
の着色を同時に形成するための着色メツキ方法を
提供することを課題とする。Problems to be Solved by the Invention The present inventor has devised an invention in view of the above-mentioned problems in coloring hot-dip galvanized steel. It is an object of the present invention to provide a colored plating method for forming.
以下本発明を詳しく説明する。 The present invention will be explained in detail below.
発明の構成
本発明の特徴は、Ti0.2重量％〜0.5重量％及び
Mn0.05〜0.15重量％を含有する溶融メツキ用亜
鉛合金を用い、浴温度580〜600℃で鉄鋼母材にメ
ツキを施し、ついでこれを500〜520℃の温度の雰
囲気中で20〜30秒加熱した後、水冷もしくは温水
冷又は冷却ガスで冷却することにより、鉄鋼に黄
色に色相を呈する着色メツキを形成することにあ
る。Structure of the Invention The present invention is characterized by Ti0.2% to 0.5% by weight and
Using a zinc alloy for hot-dip plating containing 0.05 to 0.15% Mn by weight, plating is applied to the steel base material at a bath temperature of 580 to 600°C, and then this is applied for 20 to 30 seconds in an atmosphere at a temperature of 500 to 520°C. After heating, the purpose is to form a colored plating exhibiting a yellow hue on the steel by cooling with water, hot water, or cooling gas.
課題を解決するための手段
本発明において、溶融亜鉛合金に使用する亜鉛
地金としては、JISH2107に規定される主として
蒸留亜鉛地金１種（純度98.5％以上）、最純亜鉛
地金（純度99.99％以上）並びに特殊亜鉛地金が
例示し得、これらの亜鉛地金に不可避的に含まれ
る不純物は、例えば蒸留亜鉛地金１種では
Pb1.2wt％以下、Cd0.1wt％以下、Fe0.020wt％
以下であるが、本発明ではこれらの不純物の含量
が合計で1.5wt％未満の亜鉛地金を用いることが
好ましい。なお、これらの亜鉛地金のうち、蒸留
亜鉛地金は通常のフラツクスでメツキ可能であ
り、かつメツキ皮膜の色彩濃度も高くなるので実
用上好ましい。Means for Solving the Problems In the present invention, the zinc ingots used for the molten zinc alloy are primarily distilled zinc ingots (purity of 98.5% or higher), type 1 distilled zinc ingots (purity of 99.99%), and purest zinc ingots (purity of 99.99%) as specified in JISH2107. % or more) and special zinc ingots, and the impurities unavoidably contained in these zinc ingots are, for example, in one type of distilled zinc ingot.
Pb1.2wt% or less, Cd0.1wt% or less, Fe0.020wt%
As described below, in the present invention, it is preferable to use a zinc metal having a total content of these impurities of less than 1.5 wt%. Of these zinc metals, distilled zinc metals are practically preferred because they can be plated with ordinary flux and the color density of the plating film is high.
本発明においては、上述したような亜鉛地金に
Ti0.2〜0.5重量％とMn0.05〜0.15重量％を添加、
含有させた溶融亜鉛合金の浴を用いメツキを行
う。なお、Tiを0.3重量％及びMnを0.1重量％含
有する溶融亜鉛合金の浴を用いることが特に好ま
しい。 In the present invention, the zinc base metal as described above is used.
Added Ti0.2~0.5% by weight and Mn0.05~0.15% by weight,
Plating is performed using a bath containing molten zinc alloy. Note that it is particularly preferable to use a bath of molten zinc alloy containing 0.3% by weight of Ti and 0.1% by weight of Mn.
上記量のTi及びMnを含有させた溶融亜鉛合金
の浴を用いて黄色の着色メツキを形成するには、
該溶融亜鉛合金浴に、580〜600℃の浴温度で鉄鋼
母材を少くとも１分間浸漬し、次いで鉄鋼母材を
浴から引上げて500〜520℃の温度の雰囲気中（例
えば炉内）で20〜30秒間加熱した後、10秒程度水
冷して黄の色相を呈する酸化膜から成る着色メツ
キを形成する。 To form a yellow colored plating using a bath of molten zinc alloy containing the above amounts of Ti and Mn,
The steel base material is immersed in the molten zinc alloy bath for at least 1 minute at a bath temperature of 580-600°C, and then the steel base material is removed from the bath and placed in an atmosphere (e.g., in a furnace) at a temperature of 500-520°C. After heating for 20 to 30 seconds, it is cooled with water for about 10 seconds to form a colored plating consisting of an oxide film exhibiting a yellow hue.
すなわち、黄色の色相を呈する着色メツキを形
成するには、上記特定の組成の溶融亜鉛合金浴を
用い上記条件下でメツキを行つた後、500〜520℃
の温度の雰囲気中で20〜30秒加熱することが特に
重要であつて、このメツキ後の加熱を上記範囲外
で行うと均一な黄色の色相が得られなくなる。例
えば、上記加熱時間が30秒を越えると色相は縁色
が混ざるようになつて、所望の黄色の着色メツキ
は得られなくなる。 That is, in order to form a colored plating exhibiting a yellow hue, plating is performed under the above conditions using a molten zinc alloy bath with the above specific composition, and then heated at 500 to 520°C.
It is particularly important to heat the plate for 20 to 30 seconds in an atmosphere at a temperature of 20 to 30 seconds. If the heating after plating is carried out outside the above range, a uniform yellow hue will not be obtained. For example, if the heating time exceeds 30 seconds, the hue will become mixed with edge colors, making it impossible to obtain the desired yellow colored plating.
発明の効果
以上述べたとおり、本発明に従つて特定な組成
の溶融亜鉛合金の浴を用いて特定条件下に鉄鋼母
材にメツキを行い、次いで加熱して水冷もしくは
温水冷することにより、均一な黄色の色相を呈す
るメツキを形成することができるので、用途によ
り美観上黄色の色彩を呈することが望まれる材料
や施設のための耐腐食性材料を提供でき、かつ得
られる着色メツキは耐食性にも優れているので、
本発明による着色メツキを施した鉄鋼製品は広範
囲な分野での用途に有効に供することができる。Effects of the Invention As described above, according to the present invention, a steel base material is plated under specific conditions using a bath of molten zinc alloy with a specific composition, and then heated and cooled with water or hot water to uniformly plate the steel base material. Since it is possible to form plating that exhibits a yellow hue, it is possible to provide a corrosion-resistant material for materials and facilities that are desired to exhibit a yellow color for aesthetic purposes depending on the application, and the resulting colored plating has good corrosion resistance. is also excellent, so
Steel products coated with colored plating according to the present invention can be effectively used in a wide range of fields.
以下実施例により本発明とその効果を具体的に
説明する。 The present invention and its effects will be specifically explained below using Examples.
実施例
幅50mm、長さ100mm及び厚さ3.2mmの寸法のSS41
鋼板を80℃のアルカリ浴に30分間浸漬して脱脂を
行つた後、湯洗し、次いで10％の塩酸溶液で常温
に30分間浸漬して錆を除去した。Example SS41 with dimensions of width 50mm, length 100mm and thickness 3.2mm
The steel plate was immersed in an alkaline bath at 80°C for 30 minutes to degrease it, then washed in hot water, and then immersed in a 10% hydrochloric acid solution at room temperature for 30 minutes to remove rust.
次に、この鋼板を湯洗後、35％のZnCl2−
NH4Cl溶液60℃に30秒間浸漬してフラツクス処
理を行つた。 Next, after washing this steel plate with hot water, 35% ZnCl 2 −
Flux treatment was performed by immersing the sample in an NH 4 Cl solution at 60° C. for 30 seconds.
このように前処理した鋼板を、0.3％Tiwt％−
0.1wt％Mn−Znの組成のメツキ浴に580〜600℃
の温度で１分間浸漬してメツキを施し、ついで浴
から引上げて500〜520℃の温度の炉内に20〜30秒
滞留させた後、炉内から取り出し、直ちに40〜60
℃の温水に10秒浸漬して温水冷を行つた。 The steel plate pretreated in this way was heated to 0.3%Tiwt%−
580-600℃ in plating bath with composition of 0.1wt%Mn-Zn
It is immersed for 1 minute at a temperature of
It was immersed in warm water at ℃ for 10 seconds and cooled in hot water.
このようにして得られた鋼板面には鮮やかな黄
色の色相を呈する酸化膜から成るメツキ層が形成
された。 A plating layer consisting of an oxide film exhibiting a bright yellow hue was formed on the surface of the steel sheet thus obtained.
得られた着色メツキ鋼板の試験片について塩水
噴霧による腐食試験を240時間にわたつて行つた
結果、腐食減量は48ｇ／m2であつた。 A corrosion test using salt water spray was carried out for 240 hours on the obtained test piece of the colored plated steel plate, and as a result, the corrosion weight loss was 48 g/m 2 .
因に、蒸留亜鉛地金を用いて溶融亜鉛メツキを
施した通常の鋼板では上記の腐食減量は120〜150
ｇ／m2に達する。 Incidentally, the above corrosion loss for ordinary steel sheets hot-dip galvanized using distilled zinc ingot is 120 to 150.
g/ m2 .
Claims (1)
％を含有する溶融メツキ用亜鉛合金を用い、浴温
度580乃至600℃で鉄鋼母材にメツキを施し、次い
でこれを500乃至520℃の温度の雰囲気中で20〜30
秒加熱した後、水冷もしくは温水冷又は冷却ガス
で冷却することを特徴とする鉄鋼に黄色の着色メ
ツキを形成する方法。1 Using a zinc alloy for hot-dip plating containing 0.2 to 0.5% by weight of Ti and 0.05 to 0.15% by weight of Mn, a steel base material is plated at a bath temperature of 580 to 600℃, and then this is heated to 500 to 520℃. In an atmosphere of temperature 20-30
A method for forming yellow colored plating on steel, which is characterized by heating for seconds and then cooling with water, hot water, or cooling gas.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61278173A JPS63130756A (en) | 1986-11-21 | 1986-11-21 | Formation of yellow colored plating |
| US07/116,613 US5022937A (en) | 1986-11-21 | 1987-11-03 | Colored zinc coating |
| DE87117097T DE3787347T2 (en) | 1986-11-21 | 1987-11-19 | Colored zinc coating. |
| EP87117097A EP0269005B1 (en) | 1986-11-21 | 1987-11-19 | Colored zinc coating |
| KR1019870013074A KR920004502B1 (en) | 1986-11-21 | 1987-11-20 | Method for forming coloured zinc coating on iron or steel surfaces |
| US07/694,750 US5141782A (en) | 1985-06-17 | 1991-05-02 | Colored zinc coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61278173A JPS63130756A (en) | 1986-11-21 | 1986-11-21 | Formation of yellow colored plating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63130756A JPS63130756A (en) | 1988-06-02 |
| JPH0230376B2 true JPH0230376B2 (en) | 1990-07-05 |
Family
ID=17593606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61278173A Granted JPS63130756A (en) | 1985-06-17 | 1986-11-21 | Formation of yellow colored plating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63130756A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5198026A (en) * | 1989-04-27 | 1993-03-30 | Nippon Mining Co., Ltd. | Colored zinc powder, its method of production and method for producing colored article |
| JP2009280896A (en) * | 2008-05-23 | 2009-12-03 | Kowa Industry Co Ltd | Pipe joint |
| JP7107474B1 (en) * | 2021-12-03 | 2022-07-27 | 日本製鉄株式会社 | Zn-based plated steel sheet |
-
1986
- 1986-11-21 JP JP61278173A patent/JPS63130756A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63130756A (en) | 1988-06-02 |
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