JPH01205095A - Method for electrolytically developing color on stainless steel - Google Patents
Method for electrolytically developing color on stainless steelInfo
- Publication number
- JPH01205095A JPH01205095A JP3110188A JP3110188A JPH01205095A JP H01205095 A JPH01205095 A JP H01205095A JP 3110188 A JP3110188 A JP 3110188A JP 3110188 A JP3110188 A JP 3110188A JP H01205095 A JPH01205095 A JP H01205095A
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- aqueous solution
- treatment
- electrolytic
- oxide film
- 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.)
- Granted
Links
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 58
- 239000010935 stainless steel Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims description 20
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 45
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Substances [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 41
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 17
- 239000007864 aqueous solution Substances 0.000 claims description 37
- 238000004040 coloring Methods 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 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 description 4
- 238000011161 development Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 241000416536 Euproctis pseudoconspersa Species 0.000 description 1
- 241001122767 Theaceae Species 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） この発明はステンレスの電解発色法に関する。[Detailed description of the invention] (Industrial application field) This invention relates to an electrolytic coloring method for stainless steel.
（従来技術）
従来、ステンレスに発色を行う方法としては、クロム酸
と硫酸とを含む水溶液中にステンレスを浸漬してその表
面に多孔質の酸化皮膜を形成することによって発色した
後、発色のために用いられた硫酸の濃度に比べて低濃度
の硫酸とクロム酸とを含む水溶液を別途に準備し、その
水溶液中でステンレスに陰極電解処理を行うことによっ
て、その表面の酸化皮膜を硬化する方法がある。(Prior art) Conventionally, the method for coloring stainless steel is to immerse the stainless steel in an aqueous solution containing chromic acid and sulfuric acid to form a porous oxide film on its surface, and then to develop the color. A method of hardening the oxide film on the surface of stainless steel by separately preparing an aqueous solution containing sulfuric acid and chromic acid at a lower concentration than that of the sulfuric acid used in the process, and subjecting stainless steel to cathodic electrolysis treatment in that aqueous solution. There is.
また、別の方法としては、クロム酸と硫酸とを含む水溶
液中にステンレスを浸漬し、そのステンレスに陽極電解
処理を行うことによってその表面を発色する方法、ある
いは、その水溶液と同じ水溶液中において、ステンレス
に陽極電解処理と陰極電解処理とを交互に繰り返して行
うことによって酸化皮膜による発色と同時にその酸化皮
膜を硬化する方法がある。Another method is to immerse stainless steel in an aqueous solution containing chromic acid and sulfuric acid, and then subject the stainless steel to anodic electrolysis treatment to color the surface. There is a method in which stainless steel is alternately subjected to anodic electrolytic treatment and cathodic electrolytic treatment to develop color and simultaneously harden the oxide film.
（発明が解決しようとする問題点）
これらの従来技術による発色法は、すでに工業生産化さ
れそれによって品質的にも優れたものが市場に供給され
ているが、いずれの方法も６価のクロムを含む有害な水
溶液を用いるので、公害処理に要する設備費や処理費が
高価になる。そして、それが発色製品の原価に折り込ま
れるため、必ずしも経済的に安価な製品が供給されてい
るとは言えない。(Problems to be Solved by the Invention) These conventional coloring methods have already been industrialized and products with excellent quality have been supplied to the market, but all of these methods use hexavalent chromium. Since a harmful aqueous solution containing pollutants is used, equipment costs and processing costs required for pollution treatment are expensive. Since this cost is included in the cost of the colored product, it cannot necessarily be said that economically inexpensive products are being supplied.
しかも、従来技術による発色法では、非常に腐食性の強
い薬品を用いるため、生産設備の損耗程度が大きく、そ
の点からみても不利な作業を強いられている。In addition, the conventional coloring method uses highly corrosive chemicals, which causes a large amount of wear and tear on production equipment, which is disadvantageous from that point of view as well.
それゆえに、この発明の主たる目的は、害の少ない水溶
液を用いてステンレスの表面を発色することができる、
ステンレスの電解発色法を提供することである。Therefore, the main purpose of this invention is to enable coloring of stainless steel surfaces using a less harmful aqueous solution.
An object of the present invention is to provide an electrolytic coloring method for stainless steel.
（問題点を解決するための手段）
この発明は、ステンレスの表面に酸化皮膜を形成するこ
とによって発色を行うステンレスの電解発色法であって
、水酸化ナトリウムおよび水酸化カリウムの少なくとも
一方を含む水溶液を準備する工程と、水溶液中でステン
レスに陽極電解処理および陰極電解処理を交互に繰り返
して行う工程とを含む、ステンレスの電解発色法である
。(Means for Solving the Problems) The present invention is an electrolytic coloring method for stainless steel that develops color by forming an oxide film on the surface of the stainless steel, and the method uses an aqueous solution containing at least one of sodium hydroxide and potassium hydroxide. This is an electrolytic coloring method for stainless steel, which includes the steps of preparing stainless steel and alternately repeating anodic electrolytic treatment and cathodic electrolytic treatment of stainless steel in an aqueous solution.
（作用）
水酸化ナトリウムおよび水酸化カリウムの少なくとも一
方を含む水溶液中で、ステンレスに陽極電解処理および
陰極電解処理を交互に繰り返して行うことによって、ス
テンレスの表面に酸化皮膜が形成され、それによって、
ステンレスの表面が発色される。(Function) By alternately subjecting stainless steel to anodic electrolysis treatment and cathodic electrolysis treatment in an aqueous solution containing at least one of sodium hydroxide and potassium hydroxide, an oxide film is formed on the surface of the stainless steel, and thereby,
The stainless steel surface is colored.
なお、発色のための酸化皮膜を形成するためには、水溶
液中でステンレスに陽極電解処理だけを連続的に行えば
よいが、その場合、ジュール熱によると推定されるが水
溶液の温度が部分的に上昇し、その結果、酸化皮膜の形
成のされ方にむらが生じるおそれがある。それに対して
、この発明のように陽極電解処理と陰極電解処理とを交
互に繰り返して行えば、そのようなジュール熱が制御さ
れる。しかも、この陰極電解処理を行うことによって、
ステンレスの表面に対する洗浄効果も生じるので、陽極
電解処理中に、より純粋な酸化皮膜を形成することがで
き、酸化皮膜の色品質が向上される。In addition, in order to form an oxide film for color development, it is sufficient to continuously perform anodic electrolysis treatment on stainless steel in an aqueous solution, but in that case, the temperature of the aqueous solution is partially raised, presumably due to Joule heat. As a result, the oxide film may be formed unevenly. On the other hand, if anodic electrolytic treatment and cathodic electrolytic treatment are alternately repeated as in the present invention, such Joule heat can be controlled. Moreover, by performing this cathodic electrolytic treatment,
Since a cleaning effect is also produced on the surface of the stainless steel, a purer oxide film can be formed during the anodic electrolytic treatment, and the color quality of the oxide film is improved.
（発明の効果）
この発明によれば、水酸化ナトリウムおよび水酸化カリ
ウムの少なくとも一方を含む水溶液を用いてステンレス
を発色することができる。たとえば、水酸化ナトリウム
をＩｎ＋ｏｌ／ｊ！含む２０℃の水溶液中でステンレス
にＩＡ／ｄｍ”の電流密度で陽極電解処理および陰極電
解処理を１０秒間ずつ交互に繰り返して行うと、５分経
過後にゴールドに、８分経過後にレッドに、１１分経過
後に薄いブルーに、１５分経過後にゴールドがかったグ
リーンに、ステンレスが発色スる。(Effects of the Invention) According to the present invention, stainless steel can be colored using an aqueous solution containing at least one of sodium hydroxide and potassium hydroxide. For example, sodium hydroxide is In+ol/j! When stainless steel is alternately subjected to anodic electrolysis treatment and cathodic electrolysis treatment for 10 seconds each at a current density of IA/dm in an aqueous solution at 20°C containing 100% of stainless steel, it becomes gold after 5 minutes, red after 8 minutes, and 11%. The stainless steel develops a pale blue color after 15 minutes, and a gold-tinged green color after 15 minutes.
しかも、この発明における水溶液は、従来法におけるク
ロム酸と硫酸との混合溶液のような有毒性はなく、しか
も、腐食性もほとんどない。そのため、生産に伴う設備
費は廉価ですみ、日常必要とする処理費も低く抑えるこ
とができる。したがって、取り扱い上の簡便さに加え、
極めて経済的にを利なステンレスの電解発色法が得られ
る。Furthermore, the aqueous solution of the present invention is not as toxic as the mixed solution of chromic acid and sulfuric acid used in the conventional method, and is also hardly corrosive. Therefore, equipment costs associated with production are low, and daily processing costs can also be kept low. Therefore, in addition to ease of handling,
An extremely economical electrolytic coloring method for stainless steel can be obtained.
なお、この発明における水溶液はアルカリ性であるため
、発色に先だってステンレスには脱脂作用が施されるの
で、特別な脱脂浴や脱脂処理が不要となる。Note that since the aqueous solution in this invention is alkaline, the stainless steel is degreased prior to color development, so a special degreasing bath or degreasing treatment is not required.
この発明の上述の目的、その他の目的、特徴および利点
は、図面を参照して行う以下の実施例の詳細な説明から
一層明らかとなろう。The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.
（実施例）
第１Ａ図および第１Ｂ図はこの発明を実施するための電
解装置の一例を示し、第１Ａ図はその全体の図解図であ
り、第１Ｂ図は浴およびその周辺部分を示す図解図であ
る。(Example) Fig. 1A and Fig. 1B show an example of an electrolytic device for carrying out the present invention, Fig. 1A is a schematic diagram of the entire device, and Fig. 1B is a schematic diagram showing a bath and its surrounding parts. It is a diagram.
この電解装置１０は、定電流電源１２を含む。This electrolyzer 10 includes a constant current power supply 12.
この定電流電源１２は、その入力端にたとえば交流１０
０ないし２００Ｖの電源を接続することによって、その
出力端から任意の定電流が出力される。なお、この定電
流電源１２では、たとえばθ〜１０．ＯＡの任意の電流
値の直流定電流を出力することができ、たとえば電流通
過面積が１ｄｒｆの導体に、たとえばθ〜１０．ＯＡ／
ｄｎ（の電流密度の電流を流すことができる。This constant current power supply 12 has, for example, an AC current at its input terminal.
By connecting a power supply of 0 to 200V, any constant current is output from the output terminal. Note that in this constant current power supply 12, for example, θ to 10. The OA can output a DC constant current of any current value, for example, to a conductor with a current passing area of 1 drf, for example θ to 10. OA/
A current with a current density of dn can be passed.
定電流電源１２の出力端は、極性転換スイッチ１４の入
力端に接続される。この極性転換スイッチ１４は、その
入力端に入力された電流を、任意な時間経過とともにそ
の極性を切り換えて、その出力端から出力するためのも
のである。The output terminal of the constant current power supply 12 is connected to the input terminal of the polarity change switch 14. This polarity change switch 14 is for switching the polarity of the current input to its input end over an arbitrary period of time and outputting it from its output end.
したがって、この極性転換スイッチ１４の入力端に入力
された定電流は、その出力端から、任意の時間経過にと
もなって極性が切り換えられる電流として出力される。Therefore, the constant current input to the input terminal of the polarity change switch 14 is outputted from the output terminal as a current whose polarity is switched over an arbitrary period of time.
極性転換スイッチ１４の一方の出力端は、直列接続され
たたとえばデジタル表示やアナログ表示の電流計１６お
よび銅製の接続具ｔｅａを介して、ステンレス板２０に
接続される。このステンレス板２０としては、たとえば
５ＵＳ３０４ステンレス、５ＵＳ４３０ステンレスなど
のステンレスが用いられる。One output end of the polarity change switch 14 is connected to the stainless steel plate 20 via a series-connected ammeter 16 with, for example, a digital display or an analog display, and a copper connector tea. As the stainless steel plate 20, stainless steel such as 5US304 stainless steel or 5US430 stainless steel is used.
一方、極性転換スイッチ１４の他方の出力端は、銅製の
接続具１８ｂを介して、ステンレス板２０の対極として
の対極板２２に接続される。この対極板２２は、この実
施例では鉛で形成されているが、白金、チタン、ニオブ
、カーボンおよびステンレスなどの他の導電性金属で形
成されてもよい。On the other hand, the other output end of the polarity change switch 14 is connected to a counter electrode plate 22 as a counter electrode of the stainless steel plate 20 via a copper connector 18b. Although the return electrode plate 22 is made of lead in this embodiment, it may be made of other conductive metals such as platinum, titanium, niobium, carbon, and stainless steel.
これらのステンレス板２０および対極板２２は、浴２４
内の水溶液２６中で、所定間隔を隔てて対向するように
配置される。These stainless steel plate 20 and return electrode plate 22 are connected to the bath 24.
They are placed so as to face each other at a predetermined distance in the aqueous solution 26 inside.
浴２４内に溜められた水溶液２６は、電解質として水酸
化ナトリウムおよび水酸化カリウムの少なくとも一方を
含む。The aqueous solution 26 stored in the bath 24 contains at least one of sodium hydroxide and potassium hydroxide as an electrolyte.
なお、この発明における水溶液２６としては、水酸化ナ
トリウムおよび水酸化カリウムの濃度が０．１〜２．
０ ｍｏｌ／Ｉ！の範囲にあることが好ましい。In addition, as for the aqueous solution 26 in this invention, the density|concentration of sodium hydroxide and potassium hydroxide is 0.1-2.
0 mol/I! It is preferable that it is in the range of .
すなわち、水溶液２６中の水酸化ナトリウムおよび水酸
化カリウムの濃度を０． １ ｍｏｌ／ｊ！未満の濃度
にすると、電解の効果が乏しく発色のための酸化皮膜を
形成し難くなるのであまり好ましくない。逆に、水酸化
ナトリウムおよび水酸化カリウムを２． ０ ｍｏｌ／
Ａを超える濃度にすると、電流の流れにむらが生じやす
く色むらの原因になるのであまり好ましく゛ない。That is, the concentration of sodium hydroxide and potassium hydroxide in the aqueous solution 26 is set to 0. 1 mol/j! If the concentration is less than that, the electrolytic effect will be poor and it will be difficult to form an oxide film for color development, which is not very preferable. Conversely, 2. sodium hydroxide and potassium hydroxide. 0 mol/
If the concentration exceeds A, it is not very preferable because it tends to cause unevenness in current flow and causes uneven coloring.
また、この水溶液２６の温度は常温であることが好まし
い。すなわち、たとえば特別に加熱した温度の高い水溶
液を用いれば、電解のための電流の分布が不均一になり
やすく色むらが生じやすくなるからである。Moreover, it is preferable that the temperature of this aqueous solution 26 is room temperature. That is, for example, if a specially heated aqueous solution with a high temperature is used, the distribution of electric current for electrolysis tends to become non-uniform, and color unevenness tends to occur.
そして、この発明では、上述した水溶液２６中で、ステ
ンレスに、陽極電解処理および陰極電解処理を交互に繰
り返して行うことによって、ステンレスの表面に酸化皮
膜が形成され、この酸化皮膜によってステンレスの表面
が発色される。この場合、電解処理のための電流密度は
、好ましくは、０．１〜５Ａ／ｄｒｒｒの範囲で選ばれ
る。すなわち、その電流密度を０．１Ａ／ｄｍ未満の値
にすると、電解の効果が乏しくなり発色のための酸化皮
膜を形成し難（なるからである。逆に、その電流密度を
５ Ａ／ｄ ｒｆを超える値にすると、電流の流れにむ
らが生じやすく色むらの原因になりやすいからである。In the present invention, an oxide film is formed on the surface of the stainless steel by alternately repeating anodic electrolysis treatment and cathode electrolysis treatment on the stainless steel in the above-mentioned aqueous solution 26, and this oxide film coats the surface of the stainless steel. Colored. In this case, the current density for the electrolytic treatment is preferably selected in the range of 0.1 to 5 A/drrr. That is, if the current density is set to a value less than 0.1 A/dm, the electrolytic effect becomes poor and it becomes difficult to form an oxide film for coloring. This is because if the value exceeds rf, the current flow tends to be uneven, which tends to cause color unevenness.
実験例１
まず、水酸化ナトリウムを０．０５，０．５゜１、 ０
． １． ５． ２． ０． ２． ５ ｍｏｌ／ｎ含
む水溶液をそれぞれ準備した。Experimental example 1 First, add sodium hydroxide to 0.05, 0.5°1, 0
．． 1. 5. 2. 0. 2. Aqueous solutions each containing 5 mol/n were prepared.
そして、これらの水溶液中で、厚さ０．８ｍｍ。In these aqueous solutions, the thickness was 0.8 mm.
縦１０００ｍｍ、横１０００ｍｍのへヤーライン仕上げ
された５ＵＳ３０４ステンレス鋼板に、別表１に示すそ
れぞれの条件で陽極電解処理と陰極電解処理とを１０秒
間ずつ交互に繰り返して行って、ステンレス鋼板の表面
に酸化皮膜を形成した。この場合、別表１に示す電流密
度は陽極電解処理および陰極電解処理における電流密度
であり、浴温は水溶液の浴温であり、電解時間は陽極電
解処理および陰極電解処理のすべての時間である。A 5US304 stainless steel plate with a hairline finish measuring 1000 mm long and 1000 mm wide was subjected to anodic electrolytic treatment and cathodic electrolytic treatment alternately for 10 seconds under each of the conditions shown in Attached Table 1 to form an oxide film on the surface of the stainless steel plate. was formed. In this case, the current density shown in Attached Table 1 is the current density in the anodic electrolytic treatment and the cathodic electrolytic treatment, the bath temperature is the bath temperature of the aqueous solution, and the electrolysis time is the entire time of the anodic electrolytic treatment and the cathodic electrolytic treatment.
そして、各ステンレス鋼板の表面に形成された酸化皮膜
の色を調べた。その結果も別表１に合わせて示した。The color of the oxide film formed on the surface of each stainless steel plate was then examined. The results are also shown in Attached Table 1.
この実験結果より、水酸化ナトリウムを含む水溶液中で
ステンレスに陽極電解処理および陰極電解処理を交互に
繰り返して行えば、ステンレスの表面を発色することが
わかる。The experimental results show that if stainless steel is alternately subjected to anodic electrolytic treatment and cathodic electrolytic treatment in an aqueous solution containing sodium hydroxide, the surface of stainless steel develops color.
実験例２
この実験例では、まず、水酸化カリウムを０゜５．１．
０，１．５，２．０ ｍｏｌ／ｊ！含む水溶液をそれぞ
れ準備した。Experimental Example 2 In this experimental example, first, potassium hydroxide was heated to 0°5.1.
0, 1.5, 2.0 mol/j! Aqueous solutions containing each were prepared.
そして、これらの水溶液中で、実験例１と同様なステン
レス鋼板に、別表２に示すそれぞれの条゛件で陽極電解
処理および陰極電解処理を５秒間ずつ交互に繰り返して
行って、ステンレス鋼板の表面に酸化皮膜を形成した。Then, in these aqueous solutions, the same stainless steel plate as in Experimental Example 1 was subjected to anodic electrolytic treatment and cathodic electrolytic treatment alternately for 5 seconds each under the respective conditions shown in Attached Table 2, and the surface of the stainless steel plate was An oxide film was formed on the surface.
そして、各ステンレス鋼板の表面に形成された酸化皮膜
の色を調べて、その結果を別表２に示した。Then, the color of the oxide film formed on the surface of each stainless steel plate was examined, and the results are shown in Attached Table 2.
この実験結果より、水酸化カリウムを含む水溶液中でス
テンレスに陽極電解処理および陰極電解処理を交互に繰
り返して行っても、ステンレスの表面が発色することが
わかる。The experimental results show that even when stainless steel is alternately subjected to anodic electrolytic treatment and cathodic electrolytic treatment in an aqueous solution containing potassium hydroxide, the surface of stainless steel develops color.
上述の各実験例１および２では、第１Ａ図および第１Ｂ
図に示す電解装置を用いて実験を行った・なお、上述の
実験例１および２では、水酸化ナトリウムおよび水酸化
カリウムの一方を含む水溶液が用いられているが、この
発明では、水溶液として水酸化ナトリウムおよび水酸化
カリウムを含む水溶液が用いられてもよい。In each of Experimental Examples 1 and 2 described above, FIGS. 1A and 1B
Experiments were conducted using the electrolyzer shown in the figure. In Experimental Examples 1 and 2 above, an aqueous solution containing either sodium hydroxide or potassium hydroxide was used, but in this invention, the aqueous solution was water. Aqueous solutions containing sodium oxide and potassium hydroxide may be used.
第１Ａ図および第１Ｂ図はこの発明を実施するための電
解装置の一例を示し、第１Ａ図はその全体の図解図であ
り、第１Ｂ図は浴およびその周辺部分を示す図解図であ
る。
図において、ｌＯは電解装置、１２は定電流電源、１４
は極性転換スイッチ、１６は電流計、１８ａおよび１８
ｂは接続具、２０はステンレス板、２２は対極板、２４
は浴、２６は水溶液を示す。
特許出願人 近畿薬品工業株式会社
代理人 弁理士 岡 １） 全 啓
表１
表２FIG. 1A and FIG. 1B show an example of an electrolytic device for carrying out the present invention, FIG. 1A is an illustrative diagram of the entire device, and FIG. 1B is an illustrative diagram showing a bath and its surrounding parts. In the figure, lO is an electrolytic device, 12 is a constant current power supply, and 14
is a polarity change switch, 16 is an ammeter, 18a and 18
b is a connecting tool, 20 is a stainless steel plate, 22 is a return electrode plate, 24
indicates a bath, and 26 indicates an aqueous solution. Patent Applicant Kinki Pharmaceutical Co., Ltd. Agent Patent Attorney Oka 1) Zenkei Table 1 Table 2
Claims (1)
て発色を行うステンレスの電解発色法であって、 水酸化ナトリウムおよび水酸化カリウムの少なくとも一
方を含む水溶液を準備する工程、および前記水溶液中で
前記ステンレスに陽極電解処理および陰極電解処理を交
互に繰り返して行う工程を含む、ステンレスの電解発色
法。 ２ 前記水溶液中の前記水酸化ナトリウムおよび水酸化
カリウムの濃度を０．１〜２．０ｍｏｌ／ｌとした、特
許請求の範囲第１項記載のステンレスの電解発色法。 ３ 前記水溶液の温度を常温にした、特許請求の範囲第
１項または第２項記載のステンレスの電解発色法。 ４ 前記陽極電解処理および前記陰極電解処理における
電流密度を０．１〜５Ａ／ｄｍ＾２にした、特許請求の
範囲第１項ないし第３項のいずれかに記載のステンレス
の電解発色法。[Scope of Claims] 1. An electrolytic coloring method for stainless steel that develops color by forming an oxide film on the surface of stainless steel, comprising: preparing an aqueous solution containing at least one of sodium hydroxide and potassium hydroxide; An electrolytic coloring method for stainless steel, comprising the steps of alternately repeating anodic electrolysis treatment and cathodic electrolysis treatment on the stainless steel in an aqueous solution. 2. The stainless steel electrolytic coloring method according to claim 1, wherein the concentration of the sodium hydroxide and potassium hydroxide in the aqueous solution is 0.1 to 2.0 mol/l. 3. The stainless steel electrolytic coloring method according to claim 1 or 2, wherein the temperature of the aqueous solution is kept at room temperature. 4. The stainless steel electrolytic coloring method according to any one of claims 1 to 3, wherein the current density in the anodic electrolytic treatment and the cathodic electrolytic treatment is 0.1 to 5 A/dm^2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3110188A JPH06958B2 (en) | 1988-02-12 | 1988-02-12 | Electrolytic coloring method for stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3110188A JPH06958B2 (en) | 1988-02-12 | 1988-02-12 | Electrolytic coloring method for stainless steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01205095A true JPH01205095A (en) | 1989-08-17 |
| JPH06958B2 JPH06958B2 (en) | 1994-01-05 |
Family
ID=12322010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3110188A Expired - Fee Related JPH06958B2 (en) | 1988-02-12 | 1988-02-12 | Electrolytic coloring method for stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06958B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06299394A (en) * | 1991-03-25 | 1994-10-25 | Aberu Kk | Electrolytic color developing method for stainless steel |
| JP2005247629A (en) * | 2004-03-04 | 2005-09-15 | Komatsu Electronic Metals Co Ltd | Cooler and ingot manufacturing apparatus |
| CN107084978A (en) * | 2017-05-05 | 2017-08-22 | 葛翕禹 | A kind of quick discriminating food-grade stainless steel method |
| CN116695131A (en) * | 2023-08-03 | 2023-09-05 | 苏闽(张家港)新型金属材料科技有限公司 | Production method of deep-processing alloy wire, alkali washing device and method |
-
1988
- 1988-02-12 JP JP3110188A patent/JPH06958B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06299394A (en) * | 1991-03-25 | 1994-10-25 | Aberu Kk | Electrolytic color developing method for stainless steel |
| JP2005247629A (en) * | 2004-03-04 | 2005-09-15 | Komatsu Electronic Metals Co Ltd | Cooler and ingot manufacturing apparatus |
| JP4606753B2 (en) * | 2004-03-04 | 2011-01-05 | Ｓｕｍｃｏ Ｔｅｃｈｘｉｖ株式会社 | Cooler and ingot manufacturing equipment |
| CN107084978A (en) * | 2017-05-05 | 2017-08-22 | 葛翕禹 | A kind of quick discriminating food-grade stainless steel method |
| CN116695131A (en) * | 2023-08-03 | 2023-09-05 | 苏闽(张家港)新型金属材料科技有限公司 | Production method of deep-processing alloy wire, alkali washing device and method |
| CN116695131B (en) * | 2023-08-03 | 2023-10-27 | 苏闽(张家港)新型金属材料科技有限公司 | Production method of deep-processing alloy wire, alkali washing device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06958B2 (en) | 1994-01-05 |
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