JPH0232349B2 - - Google Patents
Info
- Publication number
- JPH0232349B2 JPH0232349B2 JP61278177A JP27817786A JPH0232349B2 JP H0232349 B2 JPH0232349 B2 JP H0232349B2 JP 61278177 A JP61278177 A JP 61278177A JP 27817786 A JP27817786 A JP 27817786A JP H0232349 B2 JPH0232349 B2 JP H0232349B2
- Authority
- JP
- Japan
- Prior art keywords
- steel
- plating
- hot
- zinc
- 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.)
- Expired - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 239000011701 zinc Substances 0.000 claims description 19
- 238000007747 plating Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 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 6
- 238000005260 corrosion Methods 0.000 description 6
- 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
- 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
- 230000004580 weight loss Effects 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
- 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
- 238000007598 dipping method Methods 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
- 238000007654 immersion Methods 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
- -1 zinc metals Chemical class 0.000 description 1
Landscapes
- 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、鉄鋼に暗赤色の着色メツキを形成す
る方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for forming a dark red colored plating on steel.
ここでいう“暗赤色”とは鈍い色調の赤色を意
味する。 "Dark red" here means a dull red color.
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 a wide range of demand for colored hot-dip galvanized steel is expected in the future, not only in construction, civil engineering, and power communications, but also in sectors such as transportation, agriculture, and fisheries.
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
母材に溶融亜鉛によるメツキと暗赤色の特定な色
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 proposed an invention that was created in view of the above-mentioned problems in coloring hot-dip galvanized steel. An object of the present invention is to provide a colored plating method for simultaneously 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、0.2〜0.5重量％Ti−0.05〜
0.15重量％Mn−Znの組成を有する溶融亜鉛合金
の浴を用いて浴温度580〜600℃で鉄鋼母材にメツ
キを施し、次いでこれを500〜520℃の温度の雰囲
気中で30〜70秒加熱した後、水冷もしくは温水冷
することにより、鉄鋼母材に暗赤色の色相を呈す
る着色メツキを形成することにある。Structure of the Invention The characteristics of the present invention are as follows: 0.2 to 0.5 wt% Ti-0.05 to
A steel base material is plated using a bath of molten zinc alloy having a composition of 0.15% by weight Mn-Zn at a bath temperature of 580 to 600°C, and then plated in an atmosphere at a temperature of 500 to 520°C for 30 to 70 seconds. The purpose is to form a colored plating exhibiting a dark red hue on the steel base material by cooling with water or hot water after heating.
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、JIS Ｈ 2107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 mainly distilled zinc ingots (1st class (purity 98.5% or higher)) and purest zinc ingots ( (purity of 99.99% or higher) and special zinc ingots, and the impurities unavoidably contained in these zinc ingots are, for example, distilled zinc ingots of one type.
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 metal is practically preferred because it can be plated with ordinary flux and has a high concentration.
本発明においては、上述したような亜鉛地金に
Tiを0.2〜0.5重量％、好ましくは0.3重量％及び
Mnを0.05〜0.15重量％、好ましくは0.1重量％添
加、含有させた溶融亜鉛合金の浴を用いてメツキ
を行う。 In the present invention, the zinc base metal as described above is used.
0.2-0.5% by weight, preferably 0.3% by weight of Ti and
Plating is carried out using a bath of molten zinc alloy containing 0.05 to 0.15% by weight, preferably 0.1% by weight of Mn.
上記組成の溶融亜鉛合金の浴を用いて暗赤色の
着色メツキを形成するには、該浴に580〜600℃の
浴温度で鉄鋼母材を１分以上浸漬し、次いで鉄鋼
母材を引上げて500〜520℃の温度の雰囲気中（例
えば炉内）で30〜70秒加熱した後、直ちに水冷も
しくは温水冷を行つて、暗赤色の色相を呈する酸
化膜から成る着色メツキを形成する。 To form a dark red colored plating using a bath of molten zinc alloy with the above composition, the steel base material is immersed in the bath for at least 1 minute at a bath temperature of 580 to 600°C, and then the steel base material is pulled up. After heating for 30 to 70 seconds in an atmosphere at a temperature of 500 to 520°C (for example, in a furnace), water cooling or hot water cooling is immediately performed to form a colored plating consisting of an oxide film exhibiting a dark red hue.
上述のように、暗赤色の特定な色相の着色メツ
キを形成するには、上記特定な組成の溶融亜鉛合
金の浴を用い、かつ上記特定な浴温度で鉄鋼母材
にメツキを施し、次いで特定な温度条件に加熱
し、温水冷することが重要であつて、上記範囲外
の条件下では所望の暗赤色の着色メツキは得られ
ない。 As mentioned above, in order to form colored plating with a specific dark red hue, plating is applied to the steel base material using a bath of molten zinc alloy having the above specific composition and at the specific bath temperature, and then It is important to heat to a certain temperature condition and cool with hot water; under conditions outside the above range, the desired dark red colored plating cannot be obtained.
発明の効果
以上述べたとおり、本発明によると鉄鋼母材に
暗赤色の特定な色相を呈する着色メツキを形成し
得るので、用途により美観上暗赤色の色彩を有す
ることが望まれる材料や施設のための耐食性材料
を提供することができ、したがつて、メツキ鋼の
利用分野を拡張し得る利点がある。Effects of the Invention As described above, according to the present invention, a colored plating exhibiting a specific dark red hue can be formed on a steel base material. Therefore, there is an advantage that the field of application of plated steel can be expanded.
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、次いで塩酸の10％溶液に常温
で30分間浸漬して錆を除去した。次に、この鋼板
を湯洗後、35％のZnCl2−NH4Cl溶液に60℃で30
秒間浸漬してフラツクス処理を行つた。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 for 30 minutes at room temperature to remove rust. Next, after washing this steel plate with hot water, it was soaked in a 35% ZnCl 2 −NH 4 Cl solution at 60°C for 30 minutes.
Flux treatment was performed by dipping for a second.
このようにして前処理した鋼板を、0.3wt％Ti
−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、次いで
浴から引上げて500〜520℃の温度の炉内に30〜70
秒滞留させた後、炉内から取り出し、直ちに40〜
60℃の温度の温水冷を行つた。 The steel plate pretreated in this way was treated with 0.3wt%Ti
-580 to 600 for plating bath with composition of 0.1wt%Mn-Zn
Plating is applied by immersion at a temperature of 1 minute at a temperature of 30 to 70 degrees Celsius, then removed from the bath and placed in a furnace at a temperature of 500 to 520 degrees Celsius.
After leaving it for a few seconds, take it out of the furnace and immediately
Hot water cooling at a temperature of 60°C was performed.
このようにして得られた鋼板面には暗赤色の色
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 dark red 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60ｇ／m2であつた。 A corrosion test using salt water spray was carried out for 240 hours on the obtained colored plated steel plate test piece, and as a result, the corrosion weight loss was 60 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腐食試験による腐食減
量は120〜150ｇ／m2に達する。 Incidentally, in the case of a normal steel plate hot-dip galvanized using distilled zinc ingot, the corrosion weight loss in the above corrosion test reaches 120 to 150 g/m 2 .
Claims (1)
Znの組成を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500〜520℃の温度の雰囲気中で30〜
70秒加熱した後、水冷もしくは温水冷することを
特徴とする鉄鋼に暗赤色の着色メツキを形成する
方法。1 0.2 to 0.5 wt% Ti-0.05 to 0.15 wt% Mn-
Using a zinc alloy for hot-dip plating with a composition of Zn,
Plating the steel base material at a bath temperature of 580 to 600℃,
This is then heated in an atmosphere at a temperature of 500 to 520℃ for 30 to 30 minutes.
A method of forming a dark red colored plating on steel, which is characterized by heating for 70 seconds and then cooling with water or hot water.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61278177A JPS63130760A (en) | 1986-11-21 | 1986-11-21 | Formation of dark red 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 |
|---|---|---|---|
| JP61278177A JPS63130760A (en) | 1986-11-21 | 1986-11-21 | Formation of dark red colored plating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63130760A JPS63130760A (en) | 1988-06-02 |
| JPH0232349B2 true JPH0232349B2 (en) | 1990-07-19 |
Family
ID=17593661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61278177A Granted JPS63130760A (en) | 1985-06-17 | 1986-11-21 | Formation of dark red colored plating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63130760A (en) |
-
1986
- 1986-11-21 JP JP61278177A patent/JPS63130760A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63130760A (en) | 1988-06-02 |
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