JPH04180600A - Electropolishing solution for stainless steel - Google Patents

Electropolishing solution for stainless steel

Info

Publication number
JPH04180600A
JPH04180600A JP30998790A JP30998790A JPH04180600A JP H04180600 A JPH04180600 A JP H04180600A JP 30998790 A JP30998790 A JP 30998790A JP 30998790 A JP30998790 A JP 30998790A JP H04180600 A JPH04180600 A JP H04180600A
Authority
JP
Japan
Prior art keywords
stainless steel
acid
steel material
salts
current density
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.)
Pending
Application number
JP30998790A
Other languages
Japanese (ja)
Inventor
Chiaki Taguchi
千秋 田口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP30998790A priority Critical patent/JPH04180600A/en
Publication of JPH04180600A publication Critical patent/JPH04180600A/en
Pending legal-status Critical Current

Links

Landscapes

  • ing And Chemical Polishing (AREA)

Abstract

PURPOSE:To completely remove the scales on the surface of a stainless steel material and to easily produce a stainless steel material having an excellent mirror finished surface by electropolishing a stainless steel material in an aq. soln. of hypophosphorous acid, phosphorous acid or their salts. CONSTITUTION:A stainless steel material is dipped in an aq. soln. of hypophosphorous acid, phosphorous acid or the salts such as sodium hypophosphite and potassium phosphite, and a current is applied with the material as an anode. The protrusion on the stainless steel material surface is selectively dissolved by the ions activated by the current application and smoothed, and a stainless steel material having an excellent mirror finished surface is stably obtained.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はステンレス鋼のスケールの除去、並びに加工材
などを鏡面にするための電解研磨液に関するものである
。今日、エレクトロニクス、化学プラント、建材等に用
いるステンレス鋼の鏡面化は多彩化し、その用途は広範
である。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an electrolytic polishing liquid for removing scale from stainless steel and for making processed materials mirror-finished. Nowadays, mirror finishing of stainless steel used in electronics, chemical plants, building materials, etc. is diversified, and its applications are wide-ranging.

〔従来の技術〕[Conventional technology]

ステンレス鋼の焼鈍スケールは通常ショツトブラスト或
いはパフ研磨後、硫酸ナトリウム→硝弗酸→硝酸ナトリ
ウムなどの水溶液中で電解研磨を行なっている。一方、
溶接スケールな−どはリン酸を主成分とし、これに硫酸
、硝酸、゛シュウ酸、クエン酸などを付加した混酸或は
硝弗酸などの水溶液に浸種(化学研磨)するか、電解研
磨を行なっている。このほか、砥石による機械研磨もひ
ろく行なわれている。
Stainless steel annealing scales are usually shot blasted or puff polished and then electrolytically polished in an aqueous solution such as sodium sulfate → nitric hydrofluoric acid → sodium nitrate. on the other hand,
Welding scale, etc., should be immersed (chemically polished) in a mixed acid containing phosphoric acid as a main component and added with sulfuric acid, nitric acid, oxalic acid, citric acid, etc., or in an aqueous solution such as nitric-fluoric acid, or electrolytically polished. I am doing it. In addition, mechanical polishing using whetstones is also widely practiced.

然し乍ら、工業界のステンレス鋼に関する鏡面率(平滑
度)の要求は止まるところを知らない。
However, there is no end to the demand for specularity (smoothness) for stainless steel in the industrial world.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

本発明はステンレス鋼のスケールを除去すると共に更に
これを優れた鏡面にする安易な電解研磨液を開発するこ
とにある。
The object of the present invention is to develop a simple electrolytic polishing solution that removes scale from stainless steel and also gives it an excellent mirror finish.

〔課題を解決するための手段〕[Means to solve the problem]

今日、ステンレス鋼の鏡面を目的とする電解研磨液の殆
どはリン酸を主成分とするものである。
Today, most of the electrolytic polishing solutions intended for polishing stainless steel have phosphoric acid as a main component.

本発明では次亜リン酸あるいは亜リン酸、並びにこれら
の各種の塩を含む電解液を作成し、鏡面試験を行なった
。尚、鏡面率の測定には光輝度測定装置を用いた。
In the present invention, an electrolytic solution containing hypophosphorous acid, phosphorous acid, and various salts thereof was prepared, and a mirror surface test was conducted. Note that a brightness measuring device was used to measure the specularity.

〔作用〕[Effect]

リン酸より亜リン酸、亜リン酸より次亜リン酸の方が還
元力は強い。これらに直流を通電するとイオンは著しく
活性化する。この活性化されたイオン(例えばH,po
;、H,POコ)はステンレス鋼の凸部を選択的に溶解
するため、平滑化し、鏡面が得られるものと考えられる
Phosphorous acid has a stronger reducing power than phosphoric acid, and hypophosphorous acid has a stronger reducing power than phosphorous acid. When direct current is applied to these, the ions are significantly activated. This activated ion (e.g. H, po
;, H, PO) selectively melts the convex parts of the stainless steel, so it is thought that the stainless steel is smoothed and a mirror surface is obtained.

〔実施例〕〔Example〕

ステンレス鋼の代表的なもの、即ち5US304および
5US430(50x 50 X 1M板)で以ッテ試
験を行なった。
Tests were conducted on representative stainless steels, namely 5US304 and 5US430 (50 x 50 x 1M plates).

この試験片を焼鈍(850℃、2時間)し、スケールを
つくり、リン酸を含む従来の電解研磨液と本発明の次亜
リン酸、亜リン酸、並びにこれらの塩を含む電解研磨液
とで鏡面率の比較を行なった。
This test piece was annealed (850°C, 2 hours) to form a scale, and then mixed with a conventional electropolishing solution containing phosphoric acid and an electropolishing solution containing hypophosphorous acid, phosphorous acid, and salts thereof of the present invention. We compared the mirror surface ratio.

電解研磨液、並びに電解条件は下記の如くである。The electrolytic polishing solution and electrolytic conditions are as follows.

A液 リンfi ・−・−=−= ・= −・−・・−・・・
=・100%陽極電流密度・・・・・・・・・・・・・
・・・・・15〜30A / d m”温度・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・
90〜95℃−時間・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・10〜30分陰極・・・
・・・・・・・・・・・・・・・・・・・・・・・・・
・・ステンレス鋼板B液 リン酸−−−−−−−−・−44x 硫酸・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・40%クロム酸−= −−−−・−・・−
−−−−−−□=−6X陽極電流密度・・・・・・・・
・・・・・・・・・・30〜50A/dm’温度・・・
・・・・・・・・・・・・・・・・・・・・・・・・・
・・40〜50℃時間・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・45〜60分陰極・・
・・・・・−・・・・・・・・・・・・・・・・・・・
・ステンレス鋼板C液 次亜リン酸・・・・ ・−・・・・・・50%水・・・
・・・・・・・・・・・・・・・・・・・・・・・・・
・・・50%陽極電流密度・・・・・・・・・・・・・
・・・15〜30A / d m’湿温度・・・・・・
・・・・ ・・・・・・・・・・・・・・90〜95℃
時間・・・・・・・・・・・・・・・・・・・・・・・
・・10〜30分陰極・・・・・・・・・・・・・・・
・・・・・・・・・・・ステンレス鋼板り液 次亜リン酸アンモニウム・・・・・・50%水・・・・
・・・・・・・・・・・・−・・・・・・・・・・・・
・・・・・・50%陽極電流密度・・・・・・・・・・
・・・・・・・・・・・15〜30A/dm’温度・・
・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・90〜95℃時間・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・10〜
30分陰極・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・ステンレス鋼板E液 次亜リン酸ナトリウム・・・・・・・・・50%水・・
・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・50%陽極電流密度・・・・・・・
・・・・・・・・・・・・・・15〜30A/dm’温
度・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・90〜95℃時間・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・10
〜30分陰極・・・・・・・・・・・・・・・・・・・
・−・・・−・・・・・・・・ステンレス鋼板F液 亜リン酸・・・・・・・・・・・・・・・・・・・・・
・・・・・・50%水・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・50%陽極
電流密度・・・・・・・・・・・・・・・・・・・・・
15〜30A/dm”温度・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・90〜95
℃時間・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・10〜30分陰極・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・
・・ステンレス鋼板C液 亜リン酸カリウム・・・・・・・・・・・・・・・50
%水・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・50%陽極電流密度・・・
・・・・・・・・・・・・・・・・・・15〜30A/
dm”温度・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・90〜95℃時間・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・10〜30分陰極・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・ステンレス
鋼板H液 リン酸・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・50%次亜リン酸・・・・・・・・・
・・・・・・・・・・・・・・・25%水・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・25%陽極電流密度・・・・・・・・・・・
・・・・・・・・・・15〜30A/dゴ温度・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・
・−・・90〜95℃時間・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・10〜30
分陰極・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・ステンレス鋼板1液 リン酸−= ・−・= −・−・= ・=・・−=・=
 50%亜リン酸・・・・・・・・・・・・・・・・・
・・・・・・・・・・25%水・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・
25%陽極電流密度・・・・・・・・・・・・・・・・
・・・・・15〜30A / d m”温度・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・
・・・90〜95℃時間・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・10〜30分陰
極・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・−・・ステンレス鋼板J液 リン酸−・−・−−−−−−−−−−−・−−−−−−
−・・−・50%次亜リン酸ナトリウム・・・・−・・
・・25%水・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・25%陽極電流密
度・・・・・・・・・・・・・・・・・・・・・15〜
30分温度・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・90〜95℃時間・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・10〜30分陰極・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・ステンレス
鋼板に液 リン酸・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・50%亜リン酸カリウム・・・・・・
・・・・・・・・・25%水・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・2
5%陽極電流密度・・・・・・・・・・・・・・・・・
・・・・15〜30分温度・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・90〜95
℃時間・ ; ・ ・−−・・  10〜30分陰極 
・    ・・−ステンレス鋼板上記A−にの11種類
の電解研磨液を用い、上記条件でステンレス鋼の鏡面率
を測定した。結果は下記の如くである。
A liquid phosphorus fi ・−・−=−= ・= −・−・・−・・
=・100% anode current density・・・・・・・・・・・・・
...15~30A/dm" temperature...
・・・・・・・・・・・・・・・・・・・・・・・・
90~95℃-hour・・・・・・・・・・・・・・・・
・・・・・・・・・・・・10-30 minutes cathode...
・・・・・・・・・・・・・・・・・・・・・・・・
・・Stainless Steel Plate B Liquid Phosphoric Acid−−−−−−−−・−44x Sulfuric Acid・・・・・・・・・・・・・・・・・・・・・
・・・・・・40% chromic acid −= −−−−・−・・−
−−−−−−□=−6X anode current density・・・・・・・・・
・・・・・・・・・30~50A/dm'Temperature...
・・・・・・・・・・・・・・・・・・・・・・・・
・40~50℃ time・・・・・・・・・・・・・・・
・・・・・・・・・・・・45-60 minutes cathode...
・・・・・・-・・・・・・・・・・・・・・・・・・
・Stainless steel plate C liquid hypophosphorous acid・・・・・・・・50% water・・・
・・・・・・・・・・・・・・・・・・・・・・・・
...50% anode current density...
...15-30A/d m' humidity temperature...
・・・・・・・・・・・・・・・・・・90~95℃
time·······················
・・10-30 minutes cathode・・・・・・・・・・・・・・・
・・・・・・・・・・・・Stainless steel plate solution Ammonium hypophosphite・・・50% water・・・・
・・・・・・・・・・・・-・・・・・・・・・・・・
・・・・・・50% anode current density・・・・・・・・・
・・・・・・・・・15~30A/dm'Temperature...
・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・90~95℃ time・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・10~
30 minutes cathode・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・Stainless steel plate E liquid Sodium hypophosphite・・・・・・50% water・・
・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・50% anode current density・・・・・・
・・・・・・・・・・・・・・・15~30A/dm'Temperature・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・90~95℃ time・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・10
~30 minutes cathode・・・・・・・・・・・・・・・・・・
・−・−・・・・・Stainless steel plate F liquid phosphorous acid・・・・・・・・・・・・・・・・・・・・・・
・・・・・・50% water・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・50% anode current density・・・・・・・・・・・・・・・・・・・・・
15-30A/dm" temperature...
・・・・・・・・・・・・・・・・・・90~95
°C time・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・10-30 minutes cathode・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
・・Stainless steel plate C liquid potassium phosphite・・・・・・・・・・・・・・・50
%water·······················
・・・・・・・・・・・・50% anode current density...
・・・・・・・・・・・・・・・15~30A/
dm” Temperature・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・90-95℃ time・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
・・・10-30 minutes cathode・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・Stainless steel plate H liquid phosphoric acid・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・50% hypophosphorous acid・・・・・・・・・
・・・・・・・・・・・・25% water・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・25% anode current density・・・・・・・・・・・・
......15-30A/d temperature...
・・・・・・・・・・・・・・・・・・・・・・・・
・-・90~95℃ time・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・10~30
Cathode・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・Stainless steel plate 1-liquid phosphoric acid −= ・−・= −・−・= ・=・・−=・=
50% phosphorous acid・・・・・・・・・・・・・・・・・・
・・・・・・・・・25% water・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
25% anode current density・・・・・・・・・・・・・・・
...15~30A/dm" temperature...
・・・・・・・・・・・・・・・・・・・・・・・・
・・・90~95℃ time・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・10-30 minutes Cathode・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・−・・Stainless steel plate J liquid phosphoric acid −・−・−−−−−−−−−−−・−−−
−・・−・50% Sodium hypophosphite・・・・−・・
・・25% water・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・25% anode current density・・・・・・・・・・・・・・・・・・15~
30 minutes temperature・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・90-95℃ time・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
...10-30 minutes cathode...
・・・・・・・・・・・・・・・・・・・・・・Liquid phosphoric acid on stainless steel plate・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・50% potassium phosphite・・・・・・
・・・・・・・・・25% water・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・2
5% anode current density・・・・・・・・・・・・・・・・・・
・・・15-30 minutes temperature・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・90~95
°C time: ; ・ ・---・・ 10 to 30 minutes Cathode
- Stainless Steel Plate The specularity of stainless steel was measured under the above conditions using the 11 types of electrolytic polishing solutions described in A- above. The results are as follows.

5US(304)焼鈍 :  A   l   67〃
   1 B  1 78 ■ //     l   G   l   87/、1H
188 //1I184 //      IJ    :、    831  
    : 〃    i  K  ′  84 □ 〔発明の効果〕 従来公知のリン酸を主成分とする電解研磨液を用い、ス
テンレス鋼を処理した場合の鏡面率は62〜78%であ
ったが、本発明の次亜リン酸、亜リン酸、並びにこれら
の塩を含む電解研磨液でステンレス鋼を処理した場合の
鏡面率は83〜92%と飛躍的に向上することが判明し
た。
5US (304) Annealing: Al 67〃
1 B 1 78 ■ // l G l 87/, 1H
188 //1I184 // IJ:, 831
: 〃 i K ′ 84 □ [Effect of the invention] When stainless steel was treated with a conventionally known electrolytic polishing solution containing phosphoric acid as a main component, the mirror surface ratio was 62 to 78%, but the mirror surface ratio of the present invention was It has been found that when stainless steel is treated with an electrolytic polishing solution containing hypophosphorous acid, phosphorous acid, and salts thereof, the specularity is dramatically improved to 83 to 92%.

Claims (1)

【特許請求の範囲】[Claims] 次亜リン酸、亜リン酸あるいはこれらの塩を含む水溶液
を用いてステンレス鋼を電解研磨する。
Stainless steel is electrolytically polished using an aqueous solution containing hypophosphorous acid, phosphorous acid, or their salts.
JP30998790A 1990-11-14 1990-11-14 Electropolishing solution for stainless steel Pending JPH04180600A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30998790A JPH04180600A (en) 1990-11-14 1990-11-14 Electropolishing solution for stainless steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30998790A JPH04180600A (en) 1990-11-14 1990-11-14 Electropolishing solution for stainless steel

Publications (1)

Publication Number Publication Date
JPH04180600A true JPH04180600A (en) 1992-06-26

Family

ID=17999775

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30998790A Pending JPH04180600A (en) 1990-11-14 1990-11-14 Electropolishing solution for stainless steel

Country Status (1)

Country Link
JP (1) JPH04180600A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006138110A2 (en) * 2005-06-13 2006-12-28 Cabot Microelectronics Corporation Controlled electrochemical polishing method
JP2014043596A (en) * 2012-08-24 2014-03-13 Taseto:Kk Electrolytic solution
JP2020109217A (en) * 2020-04-20 2020-07-16 株式会社Ihi Treatment method of stainless steel component

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006138110A2 (en) * 2005-06-13 2006-12-28 Cabot Microelectronics Corporation Controlled electrochemical polishing method
WO2006138110A3 (en) * 2005-06-13 2007-06-07 Cabot Microelectronics Corp Controlled electrochemical polishing method
US7998335B2 (en) 2005-06-13 2011-08-16 Cabot Microelectronics Corporation Controlled electrochemical polishing method
JP2014043596A (en) * 2012-08-24 2014-03-13 Taseto:Kk Electrolytic solution
JP2020109217A (en) * 2020-04-20 2020-07-16 株式会社Ihi Treatment method of stainless steel component

Similar Documents

Publication Publication Date Title
US4009115A (en) Composition and method for cleaning aluminum at low temperatures
JP3278472B2 (en) Phosphate conversion coating compositions and methods
CN105018948B (en) A kind of 304 austenitic stainless steel acid washing method of hot rolling
JPS6167770A (en) Plating method of magnesium and magnesium alloy
US3597283A (en) Phosphating solutions for use on ferrous metal and zinc surfaces
JP6626205B2 (en) Film forming treating agent for composite chemical conversion film for magnesium alloy and film forming method
JPS59166677A (en) Improvement for producing phosphate salt film
JPH11193498A (en) Cathodic-protection coating of magnesium or its alloy and its production
WO2010050131A1 (en) Treatment solution for chemical conversion of metal material and method for treatment
USRE32661E (en) Cleaning aluminum at low temperatures
JPH07126859A (en) Hexavalent chromium-free surface treating agent for chemical conversion for aluminum and aluminum alloy
US4678519A (en) Method of zinc phosphatization, activation and refining bath used in said method and corresponding concentrate
JPH09502768A (en) Pre-cleaning for phosphating metal surfaces
CN105256296B (en) A kind of 35CrMnSi steel normal cryochemistry conversion fluid and preparation method thereof
JPH04180600A (en) Electropolishing solution for stainless steel
US3454483A (en) Electrodeposition process with pretreatment in zinc phosphate solution containing fluoride
KR20090012634A (en) Method of treating surface of magnesium product
US2593448A (en) Method and composition for treating aluminum and aluminum alloys
JPH0411629B2 (en)
US2472864A (en) Composition for and method of chemically coating aluminum
US2462197A (en) Etching method
US2386078A (en) Electropolishing bath
JP2005325403A (en) Surface treatment method for aluminum die-cast material
US3505129A (en) Chemical coating process for metal
US2955061A (en) Fluoride coating on zirconium