JPH03180496A - Method for smoothing and cleaning steel surface - Google Patents
Method for smoothing and cleaning steel surfaceInfo
- Publication number
- JPH03180496A JPH03180496A JP31911989A JP31911989A JPH03180496A JP H03180496 A JPH03180496 A JP H03180496A JP 31911989 A JP31911989 A JP 31911989A JP 31911989 A JP31911989 A JP 31911989A JP H03180496 A JPH03180496 A JP H03180496A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- soln
- cleaning
- smoothing
- purity material
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 64
- 239000010959 steel Substances 0.000 title claims abstract description 64
- 238000004140 cleaning Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims description 22
- 238000009499 grossing Methods 0.000 title claims description 15
- KWSLGOVYXMQPPX-UHFFFAOYSA-N 5-[3-(trifluoromethyl)phenyl]-2h-tetrazole Chemical compound FC(F)(F)C1=CC=CC(C2=NNN=N2)=C1 KWSLGOVYXMQPPX-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910000365 copper sulfate Inorganic materials 0.000 claims abstract description 5
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims abstract description 5
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 claims abstract description 5
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 claims abstract description 5
- 229910001379 sodium hypophosphite Inorganic materials 0.000 claims abstract description 5
- 239000000243 solution Substances 0.000 claims description 14
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 abstract description 21
- 230000007797 corrosion Effects 0.000 abstract description 21
- 239000000463 material Substances 0.000 abstract description 20
- 238000007747 plating Methods 0.000 abstract description 19
- 239000012535 impurity Substances 0.000 abstract description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 13
- 238000011109 contamination Methods 0.000 abstract description 10
- 229910052802 copper Inorganic materials 0.000 abstract description 10
- 239000010949 copper Substances 0.000 abstract description 10
- 238000010828 elution Methods 0.000 abstract description 8
- 229910052759 nickel Inorganic materials 0.000 abstract description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract description 3
- 239000002253 acid Substances 0.000 abstract description 2
- 239000003792 electrolyte Substances 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 229910000851 Alloy steel Inorganic materials 0.000 abstract 1
- 229910000975 Carbon steel Inorganic materials 0.000 abstract 1
- 239000010962 carbon steel Substances 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 230000008595 infiltration Effects 0.000 abstract 1
- 238000001764 infiltration Methods 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000005498 polishing Methods 0.000 description 29
- 239000000126 substance Substances 0.000 description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000000047 product Substances 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 239000010410 layer Substances 0.000 description 8
- 238000011282 treatment Methods 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000008151 electrolyte solution Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000006061 abrasive grain Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000011538 cleaning material Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910001453 nickel ion Inorganic materials 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、鋼の表面の平滑清浄化処理方法に関し、詳細
には不純物の混入を嫌う高純度物質の製造、貯蔵、移送
、又は処理用の機器、装置、構造物等（以降、高純度物
質処理装置等という）を構成する普通鋼や低合金ｆｉ（
以降、鋼という）の表面を平滑にし清浄化する平滑清浄
化処理方法に関する。Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a method for smoothing and cleaning the surface of steel, and more specifically, for manufacturing, storing, transporting, or processing high-purity substances that do not want to be contaminated with impurities. Ordinary steel and low alloy fi(
The present invention relates to a smoothing and cleaning treatment method for smoothing and cleaning the surface of steel (hereinafter referred to as steel).
（従来の技術）
上記高純度物質処理装置等は、ボンベ、配管反応塔等の
如く、外気と遮断された所謂密閉状態の部分が多く、該
密閉部分では腐食が起こり難いので、その構成材料とし
て鋼が使用される。該密閉部分を構成する鋼は、高純度
物質自１体、又は高純度物質製造用の原料や中間体（以
降、高純度物質等という）と接触する。かかる装置等に
おいては、当然に不純物の混入が嫌われ、その混入を極
力防止することが必要である。(Prior Art) The above-mentioned high-purity substance processing equipment, etc. has many parts, such as cylinders and pipe reaction towers, in a so-called sealed state that are cut off from the outside air, and since corrosion is unlikely to occur in these sealed parts, it is recommended to use steel is used. The steel constituting the sealed portion comes into contact with the high-purity substance itself or with raw materials or intermediates for producing the high-purity substance (hereinafter referred to as high-purity substance, etc.). In such devices, contamination with impurities is naturally disliked, and it is necessary to prevent such contamination as much as possible.
該不純物混入の防止対策の一環として、前記高純度物質
処理装置等を構成する鋼は、該装置等を使用する前に、
その表面を平滑にし清浄化する平滑清浄化処理が行われ
る。かかる処理は、表面を滑らかにすると共に、実表面
積を小さくする事により、耐付着性を向上して不純物混
入の抑制を図るものである。As part of the measures to prevent the contamination of impurities, the steel constituting the high-purity substance processing equipment, etc. must be treated before using the equipment, etc.
A smoothing cleaning process is performed to smooth and clean the surface. This treatment aims to improve adhesion resistance and suppress contamination of impurities by smoothing the surface and reducing the actual surface area.
従来、上記鋼表面の平滑清浄化処理は、該表面を機械的
に研磨する方法により行われいた。該機械的研磨方法は
、例えば砥石や研磨紙で研磨した後、パフ研磨仕上げす
るものであり、表面を平滑にし得る。しかし、この研磨
により部分的に所謂バリ（鋭利な凸部）が形成され、又
、砥粒やパフ粉が研磨部に残留するので、それらに起因
して不純物混入が生し易いという問題点がある。即ち、
上記パリはその部分での付着性を増大せしめ、又、ハフ
粉等の研磨部残留物はそれ自体が不純物として混入する
ものである。又、ボンベ等の如く、狭小な口を有するも
のは、その部分を平滑化するのが難しく、又、平滑化に
長時間を要するという問題点がある。Conventionally, the above-mentioned smooth cleaning treatment of the steel surface has been carried out by mechanically polishing the surface. The mechanical polishing method involves, for example, polishing with a whetstone or abrasive paper and then finishing with puff polishing, which can smooth the surface. However, due to this polishing, so-called burrs (sharp protrusions) are formed in some areas, and abrasive grains and puff powder remain in the polished area, which causes the problem of easy contamination with impurities. be. That is,
The above-mentioned paris increases adhesion in that area, and residues from the polishing part such as hough powder are themselves mixed in as impurities. Further, in the case of a cylinder having a narrow opening, it is difficult to smooth the opening, and it takes a long time to smooth the opening.
そこで、上記ｉ械的研磨法に代えて、電解研磨法の採用
が試みられている。該電解研磨法は、鋼を陽極とし、電
解液中で陰極との間に電圧を印加して雷解し、鋼表面を
平屑にするものであり、′こ気化学的な方法である。上
記電解液としては、作業性の点からリン酸系の強酸が使
用されることが多い。例えばリン酸を６５部含む水？８
液が用いられる。上記電解研磨処理後は、水道水や工業
用水等の通常水を洗浄液に用いて洗浄された後、乾燥さ
れる。Therefore, attempts have been made to adopt an electrolytic polishing method instead of the mechanical polishing method described above. The electrolytic polishing method uses steel as an anode and applies a voltage between it and a cathode in an electrolytic solution to cause the steel surface to become flattened by lightning, and is a chemical method. As the electrolytic solution, a strong acid such as phosphoric acid is often used from the viewpoint of workability. For example, water containing 65 parts of phosphoric acid? 8
liquid is used. After the electrolytic polishing process, the substrate is washed using ordinary water such as tap water or industrial water as a cleaning liquid, and then dried.
（発明が解決しようとする課題）
上記電解研磨法によれば、前記機械的研磨法による場合
の問題点を生しることなく、鋼表面を平滑にし得るよう
になるという利点がある。(Problems to be Solved by the Invention) The electrolytic polishing method described above has the advantage that the steel surface can be smoothed without causing the problems caused by the mechanical polishing method.
ところが、上記電解研磨法は、電解研磨された面が極め
て化学的に活性であるため、電解研磨後の特に水洗又は
乾燥時に腐食されて粗面化し、膜状の腐食生成物が鋼表
面に付着残留する。これは、特に電解液の酸性が強い場
合に起こり易い。従って、上記従来の電解研磨法による
方法には、高純度物質処理装置等を構成する鋼表面を充
分に清浄化し得す、上記の如き膜状腐食生成物が付着し
ており、それらが高純度物質等に不純物として混入する
という問題点がある。However, in the electrolytic polishing method described above, since the electrolytically polished surface is extremely chemically active, the surface is corroded and roughened especially during washing or drying after electrolytic polishing, and a film of corrosion products adheres to the steel surface. remain. This is particularly likely to occur when the electrolyte is highly acidic. Therefore, in the conventional electrolytic polishing method described above, the above-mentioned film-like corrosion products adhere to the surface of the steel constituting the high-purity material processing equipment, etc., which can be sufficiently cleaned. There is a problem that it mixes into substances as impurities.
本発明はこの様な事情に着目してなされたものであって
、その目的は従来のものがもつ以上のような問題点を解
消し、高純度物質処理装置等を構成する鋼の表面を充分
に平滑清浄化し得、高純度物質等への不純物の混入を防
止し得る鋼の表面の平滑清浄化処理方法を提供しようと
するものである。The present invention has been made in view of these circumstances, and its purpose is to solve the above-mentioned problems of conventional methods, and to sufficiently cover the surface of steel constituting high-purity material processing equipment, etc. It is an object of the present invention to provide a method for smoothing and cleaning the surface of steel, which can clean the surface of steel and prevent contamination of high-purity substances with impurities.
（課題を解決するための手段）
上記の目的を遠戚するために、本発明は次のような構成
の鋼の表面の平滑清浄化処理方法としている。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a method for smoothing and cleaning the surface of steel having the following configuration.
即ち、本発明に係る鋼の表面の平滑清浄化処理方法は、
鋼の表面を平滑にし清浄化するに際し、鋼を電解研磨し
た後、硫酸ニッケル及び次亜リン酸ソーダを含む水溶液
、又は硫酸銅水溶液を洗浄液に用いて洗浄することを特
徴とする鋼の表面の平滑清浄化処理方法である。That is, the method for smoothing and cleaning the surface of steel according to the present invention is as follows:
When smoothing and cleaning the surface of steel, after electrolytically polishing the steel, the surface of steel is cleaned using an aqueous solution containing nickel sulfate and sodium hypophosphite, or an aqueous copper sulfate solution as a cleaning solution. This is a smooth cleaning treatment method.
（作 用）
本発明に係る鋼の表面の平滑清浄化処理方法は、上記の
如く、調を電解研磨するようにしているので、鋼表面が
平滑化されると共に、前述の如く極めて化学的に活性化
される。(Function) The method for smoothing and cleaning the surface of steel according to the present invention uses electrolytic polishing as described above, so that the surface of the steel is smoothed and is extremely chemically polished as described above. activated.
上記電解研磨後、洗浄液として硫酸ニッケル及び次亜リ
ン酸ソーダを含む水溶液、又は硫酸銅水溶液（以降、化
学洗浄液という）を用いて洗浄するようにしているので
、該洗浄により鋼表面の霊解研磨液が上記化学洗浄液で
置換され、除去（即ち洗浄）される。その結果洗浄され
ると共に、上記化学洗浄液が極めて化学的に活性な鋼表
面に接触することになる。After the above electrolytic polishing, cleaning is performed using an aqueous solution containing nickel sulfate and sodium hypophosphite, or an aqueous copper sulfate solution (hereinafter referred to as chemical cleaning solution), so that the surface of the steel can be spiritually polished by this cleaning. The liquid is replaced with the chemical cleaning solution and removed (ie, cleaned). As a result, the chemical cleaning solution comes into contact with a highly chemically active steel surface.
上記化学洗浄液は、清浄な鋼表面に接触すると、洗浄液
中のニッケル又は銅イオンが鋼表面に金属に化して析出
し、鋼表面を被覆（即ちメツキ）するという作用がある
。該メツキは、上記化学洗／７Ｉｔ！、と接触する鋼表
面が不活性である場合には、起こり難く、不均一なもの
になり易いが、該鋼表面が化学的に活性である場合には
、円滑に起こり易く、均一で良好なものになる。又、後
者の場合は上記の如くメツキが円滑に起こるので、上記
化学洗浄液と接触している間に腐食生成物を生しず、更
にメツキ後は耐食性の優れた二ンケルメッキ又は銅メツ
キ層で被覆されるので、腐食生成物を生しない、尚、メ
ツキは表面平滑度を損なわず、逆に向上させるものであ
るので、メン牛後の表面の平滑度は、電解研磨後の鋼表
面の平滑度と同等ちしくはそれ以上になる。When the above chemical cleaning liquid comes into contact with a clean steel surface, nickel or copper ions in the cleaning liquid convert into metal and precipitate on the steel surface, thereby coating (that is, plating) the steel surface. The plating was washed with the above chemical / 7It! If the steel surface that comes into contact with Become something. In the latter case, plating occurs smoothly as described above, so no corrosion products are generated while in contact with the chemical cleaning solution, and after plating, the plate is covered with a highly corrosion-resistant 2-nickel plating or copper plating layer. Since plating does not impair the surface smoothness, on the contrary it improves it, the smoothness of the surface after polishing is equal to the smoothness of the steel surface after electrolytic polishing. It will be equal to or more than that.
故に、前記の如く化学洗浄ｃ夜が極めて化学的に活性な
鋼表面に接触すると、腐食生成物を生しることなく、耐
食性に優れたニッケルメッキ又は銅メツキ層で被覆され
、該メツキ層の表面は電解研磨後の鋼表面と同等もしく
はそれ以上の平滑度になる。Therefore, as mentioned above, when chemical cleaning material comes into contact with an extremely chemically active steel surface, it is coated with a nickel plating or copper plating layer with excellent corrosion resistance without producing corrosion products, and the plating layer is coated with a nickel plating or copper plating layer with excellent corrosion resistance. The surface becomes as smooth as or better than the steel surface after electrolytic polishing.
従って、本発明に係る鋼の表面の平滑清浄化処理方法に
よれば、腐食生成物を生しることなく、表面の平滑度が
高く、且つ、耐食性に優れたニッケルメッキ又は銅メン
キ層で鋼表面を被覆し得るようになる。そのため、高純
度物質処理装置等を構成する鋼の表面を充分に平滑清浄
化し得、高純度物質等への不純物の混入を防止し得るよ
うになる。更に、上記の如き耐食性メツキ層で鋼表面が
被覆されるので、従来の電解研磨・水洗・乾燥処理によ
る場合に比較し、鋼の溶出が極めて生じ難くなり、その
ため銅溶出による不純物の混入がおこり難くなる。Therefore, according to the method for smoothing and cleaning the surface of steel according to the present invention, the surface of the steel is coated with a nickel plating or copper coating layer that does not produce corrosion products, has a high surface smoothness, and has excellent corrosion resistance. It becomes possible to coat the surface. Therefore, the surface of the steel constituting the high-purity substance processing equipment, etc. can be sufficiently smoothed and cleaned, and the contamination of impurities into the high-purity substance, etc. can be prevented. Furthermore, since the steel surface is coated with the above-mentioned corrosion-resistant plating layer, steel elution is extremely difficult to occur compared to conventional electrolytic polishing, water washing, and drying treatments, and as a result, contamination with impurities due to copper elution occurs. It becomes difficult.
尚、前記化学洗浄液による電解研磨後の鋼表面の洗浄は
、該鋼を化学洗浄液に浸漬する方法、該鋼表面に化学洗
浄液を流す方法、該鋼表面に化学洗浄液を吹き付ける方
法等により行うことができ、洗浄方法は限定されるもの
ではない。The steel surface after electrolytic polishing with the chemical cleaning solution can be cleaned by immersing the steel in the chemical cleaning solution, flowing the chemical cleaning solution onto the steel surface, spraying the chemical cleaning solution onto the steel surface, etc. The cleaning method is not limited.
前記鋼表面洗浄後は、化学洗浄液を除去するため水洗し
、その後乾燥すればよい、尚、該水洗・乾燥時には、前
記の如き耐食性メツキ層で鋼表面が被覆されているので
、腐食の発生及び腐食生成物の表面付着残留は起こらず
、かかる腐食生成物による不純物７昆人という問題点を
生じるものではない。After the steel surface has been cleaned, it may be washed with water to remove the chemical cleaning solution, and then dried. Note that during said water washing and drying, since the steel surface is covered with the above-mentioned corrosion-resistant plating layer, there is no possibility of corrosion occurring. Corrosion products do not remain attached to the surface, and the problem of impurities caused by such corrosion products does not occur.
（実施例）
尖旌拠上
厚み：２ｍｓ、幅：２０Ｉｌ１ｍ、 長さ：１１００
ＩＩ１の鋼板（ＳＳ４１）について、８５％リン酸二６
５部と９６％硫酸：３５部とを含む水溶液（５０°Ｃ）
を電解液とし、２０＾／ｄ−の電流密度で１０分間通電
して電解研磨した後、濃度ｌＯ％の硫酸銅水溶ｉ’ｆｌ
（５０’Ｃ）中に３分間浸漬して洗浄し、次いで水洗し
た後、乾燥した。(Example) Tip top thickness: 2ms, width: 20Il1m, length: 1100
For II1 steel plate (SS41), 85% di6 phosphate
Aqueous solution (50°C) containing 5 parts and 35 parts of 96% sulfuric acid
was used as an electrolytic solution, and after electropolishing by applying current for 10 minutes at a current density of 20^/d-, copper sulfate aqueous solution i'fl with a concentration of 10% was applied.
(50'C) for 3 minutes, then washed with water, and then dried.
このようにすると、腐食の発生及び腐食生成物の表面付
着残留を全く生しることなく、平清な銅メツキ層で被覆
された鋼板が得られた。In this way, a steel plate coated with a clear copper plating layer was obtained without any occurrence of corrosion or residual corrosion products adhering to the surface.
上記得られた鋼板についてよ面粗度を測定して平滑度を
調べたところ、平滑度は電解研磨後の鋼表面と同等の高
水準であった。When the surface roughness of the obtained steel plate was measured and the smoothness was examined, the smoothness was found to be at a high level equivalent to that of the steel surface after electrolytic polishing.
又、上記鋼板（以降、ａ材という）、並びに、上記と同
様の電解研磨をした後水洗・乾燥したもの（以降、ｂ材
という）、及び、電解研磨をせずに上記と同様の条件で
洗浄処理した後水洗・乾燥したもの（以降、Ｃ材という
）を、別々に８０″Ｃのイオン交換水に２４０Ｈｒ浸漬
した後、該水中の鉄量及び銅量を分析し、これらの溶出
量を求めた。尚、Ｃ材は電解研磨をしていないので洞メ
ツキが不均一に被覆され、ミクロ的観察により部分的に
鋼面が露出していることが確認された。In addition, the above-mentioned steel plate (hereinafter referred to as "A material"), the same electrolytic polishing as above, then washed and dried (hereinafter referred to as "B material"), and the steel plate prepared under the same conditions as above without electrolytic polishing. After washing, washing and drying (hereinafter referred to as C material), the material was separately immersed in ion-exchanged water at 80"C for 240 hours, and the amount of iron and copper in the water was analyzed, and the amount of these eluted was determined. Since C material was not electrolytically polished, the hole plating was unevenly covered, and microscopic observation confirmed that the steel surface was partially exposed.
その結果、ｂ材は鉄溶出量が１００ＰＩ”Ｍであり、Ｃ
材は鉄溶出量が２００ＰＰＭであり、いづれも鉄の溶出
が認められた。ａ材の場合は、鉄ａ ： ＩＯＰＰＭ未
満であり、防食効果のあることが確認された。As a result, the iron elution amount of material b was 100 PI”M, and the C
The iron elution amount of the materials was 200 PPM, and iron elution was observed in all cases. In the case of material A, the iron a content was less than IOPPM, and it was confirmed that it had an anticorrosive effect.
尖詣炎ｌ
実施例Ｉの場合と同様の鋼板ζこついて同様の条件で電
解研磨した後、硫酸ニッケル：３０ｇ／Ｉ及び次亜リン
酸ソーダ：１５ｇ／ｌを含む水溶液（５０°Ｃ）中に２
分間浸漬して洗浄し、次いで水洗・乾燥した。After electropolishing the same steel plate ζ as in Example I under the same conditions, it was polished in an aqueous solution (50°C) containing 30 g/l of nickel sulfate and 15 g/l of sodium hypophosphite. to 2
It was washed by soaking for a minute, then washed with water and dried.
このようにすると、腐食の発生及び腐食生成物の表面付
着残留を全く生しることなく、平滑なニッケルメッキ層
で被覆された鋼板が得られた。In this way, a steel plate coated with a smooth nickel plating layer was obtained without any occurrence of corrosion or residual corrosion products adhering to the surface.
上記得られた鋼板について表面粗度を測定して平滑度を
調べたところ、平滑度は電解研磨後の鋼表面と同等の高
水準であった。When the surface roughness of the obtained steel plate was measured and the smoothness was examined, the smoothness was found to be at a high level equivalent to that of the steel surface after electrolytic polishing.
又、上記鋼＋７Ｎ（以降、Ａ材という）、並びに、上記
と同様の電解研磨をした後水洗・乾燥したもの（以降、
Ｂ材という）、及び、電解研磨をせずに上記と同様の条
件で洗浄処理した後水洗・乾燥したもの（以降、Ｃ材と
いう）を、同時に室温の大気中に３日間放置して発錆性
試験を行った。その結果、Ｂ材及びＣ材は全面発錆して
いたが、Ａ材は全く発錆が認められなかった。In addition, the above-mentioned steel +7N (hereinafter referred to as A material) and the same electrolytic polishing as above, then washed and dried (hereinafter referred to as
Material B) and material that was washed and dried under the same conditions as above without electrolytic polishing (hereinafter referred to as material C) were left in the air at room temperature for 3 days to develop rust. A sex test was conducted. As a result, materials B and C were completely rusted, but material A was not observed to have any rust at all.
（発明の効果）
本発明に係る鋼の表面の平滑清浄化処理方法によれば、
高純度物質処理装置等を構成する鋼の表面を充分に平滑
清浄化し得、高純度物質等への不鈍物の？昆入を防止し
得るようになる。上記に加えて、耐食性メンキ層で鋼表
面が被覆されるので、従来の電解研磨・水洗・乾燥処理
による場合に比較し、鋼の溶出が極めて生し難くなり、
そのため銅溶出による不純物のｄ人が極めて起こり難く
なるという効果も得られる。(Effect of the invention) According to the method for smoothing and cleaning the surface of steel according to the present invention,
Is it possible to sufficiently smooth and clean the surface of steel constituting high-purity substance processing equipment, etc., and prevent dulling of high-purity substances? It becomes possible to prevent contamination. In addition to the above, since the steel surface is coated with a corrosion-resistant coating layer, steel elution is extremely difficult to occur compared to conventional electrolytic polishing, water washing, and drying treatments.
Therefore, it is possible to obtain the effect that impurities due to copper elution are extremely unlikely to occur.
Claims (1)
研磨した後、硫酸ニッケル及び次亜リン酸ソーダを含む
水溶液、又は硫酸銅水溶液を洗浄液に用いて洗浄するこ
とを特徴とする鋼の表面の平滑清浄化処理方法。(1) When smoothing and cleaning the surface of the steel, the steel is electrolytically polished and then cleaned using an aqueous solution containing nickel sulfate and sodium hypophosphite, or an aqueous copper sulfate solution as a cleaning solution. A method for cleaning and smoothing the surface of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31911989A JPH03180496A (en) | 1989-12-08 | 1989-12-08 | Method for smoothing and cleaning steel surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31911989A JPH03180496A (en) | 1989-12-08 | 1989-12-08 | Method for smoothing and cleaning steel surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03180496A true JPH03180496A (en) | 1991-08-06 |
Family
ID=18106676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31911989A Pending JPH03180496A (en) | 1989-12-08 | 1989-12-08 | Method for smoothing and cleaning steel surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03180496A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8201619B2 (en) | 2005-12-21 | 2012-06-19 | Exxonmobil Research & Engineering Company | Corrosion resistant material for reduced fouling, a heat transfer component having reduced fouling and a method for reducing fouling in a refinery |
| US8286695B2 (en) | 2005-12-21 | 2012-10-16 | Exxonmobil Research & Engineering Company | Insert and method for reducing fouling in a process stream |
-
1989
- 1989-12-08 JP JP31911989A patent/JPH03180496A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8201619B2 (en) | 2005-12-21 | 2012-06-19 | Exxonmobil Research & Engineering Company | Corrosion resistant material for reduced fouling, a heat transfer component having reduced fouling and a method for reducing fouling in a refinery |
| US8286695B2 (en) | 2005-12-21 | 2012-10-16 | Exxonmobil Research & Engineering Company | Insert and method for reducing fouling in a process stream |
| US8469081B2 (en) | 2005-12-21 | 2013-06-25 | Exxonmobil Research And Engineering Company | Corrosion resistant material for reduced fouling, a heat transfer component having reduced fouling and a method for reducing fouling in a refinery |
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