JP6970199B2 - ステンレス鋼部品のための表面cts防食処理方法 - Google Patents
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- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
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- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/40—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
- C23C22/43—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates containing also hexavalent chromium compounds
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- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/40—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
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- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F17/00—Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/19—Iron or steel
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/36—Phosphatising
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- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D9/00—Electrolytic coating other than with metals
- C25D9/04—Electrolytic coating other than with metals with inorganic materials
- C25D9/08—Electrolytic coating other than with metals with inorganic materials by cathodic processes
- C25D9/10—Electrolytic coating other than with metals with inorganic materials by cathodic processes on iron or steel
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- Chemical Treatment Of Metals (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
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Description
PREN=1×Cr+3.3×Mo+20×N、
により、本発明の方法によって処理した種々のステンレス鋼表面のPREN値は、かなり増大しており、40〜58である。
PREN=1×Cr+3.3×Mo+20×N
により、本発明の方法で処理した304ステンレス鋼のPREN値は、47.58である。
Claims (12)
- ステンレス鋼表面の防食方法であって:
(1)水酸化ナトリウム溶液及びアルカリエッチング活性剤含有溶液を用いてステンレス鋼表面を同時に化学的脱脂及びアルカリエッチングした後、水で洗浄する工程;
(2)前記工程(1)で処理した前記ステンレス鋼表面を、酸化溶液で酸化した後、水で洗浄する工程;
(3)前記工程(2)で処理した前記ステンレス鋼表面を、カソードとして電解液に浸漬して電解した後、水で洗浄する工程;
(4)前記工程(3)で処理した前記ステンレス鋼表面を、温度50〜60℃及び湿度60〜70%に配置して硬化させる工程
を含み、
ここで、工程(1)において、アルカリエッチング活性剤はエトキシ変性ポリトリシロキサンである、
防食方法。 - 前記工程(1)において、前記水酸化ナトリウム溶液及び前記アルカリエッチング活性剤含有溶液は、80〜85℃であり;
前記水酸化ナトリウム溶液の濃度は6.5〜8%であり;
前記アルカリエッチング活性剤含有溶液の濃度は0.3〜0.5%であり;
前記化学的脱脂及びアルカリ処理によるエッチングは、10〜15分間実施され;
前記水での洗浄は、80〜85℃の温度の水を用いて3〜5分間実施することを特徴とする、請求項1に記載の防食方法。 - 前記工程(2)において、前記酸化溶液は、200〜300g/LのCrO3及び100〜150g/LのNa2MoO4を含有し;
前記酸化溶液の温度は75〜90℃であり;
前記酸化溶液のpHは、H2SO4溶液を酸化溶液に添加することによって0.4〜1.5に調節され;前記H2SO4溶液の濃度は98%であり;
酸化処理は15〜35分間実施し;
前記工程(2)における前記水での洗浄は、25〜40℃の水を用いて3〜5分間実施し;前記水のpHは>3である
ことを特徴とする、請求項1又は請求項2に記載の防食方法。 - 前記工程(3)において、前記電解液は、100〜150g/LのCrO3、100〜150g/LのNa2MoO4、200〜250g/LのH3PO4、50〜60g/LのNa2SiO3を含有することを特徴とする、請求項1から請求項3のいずれかに記載の防食方法。
- 前記工程(3)において、前記電解液の温度は40〜52℃であることを特徴とする、請求項1から請求項3のいずれかに記載の防食方法。
- 前記工程(3)において、前記電解液のpHは、H 2 SO 4 溶液を前記電解液に添加することによって0.5〜1.5に調節され;前記H 2 SO 4 溶液の濃度は98%であることを特徴とする、請求項1から請求項3のいずれかに記載の防食方法。
- 前記工程(3)において、前記電解は、40A/m 2 の初期電流強度で10〜25分間電解すること、及びその後、15〜30分の間に5A/m 2 まで徐々に低下される電流強度で電解することを含み、
初期電流強度は40A/m 2 であり、その後、前記電流強度は式i=3+A/t(式中、iは電流強度、単位はA/m 2 であり、tは時間、単位は分であり、Aは20〜30のパラメータである)に従って5A/m 2 まで徐々に低下される
ことを特徴とする、請求項1から請求項3のいずれかに記載の防食方法。 - 前記工程(3)において、前記電解の時間は25〜55分であることを特徴とする、請求項1から請求項3のいずれかに記載の防食方法。
- 前記工程(3)において、前記水での洗浄は、25〜40℃の水を用いて3〜5分間実施され;前記水のpHは>3であることを特徴とする、請求項1から請求項3のいずれかに記載の防食方法。
- 前記工程(4)において、配置することによる硬化処理の時間は3〜4時間であることを特徴とする、請求項1から請求項3のいずれかに記載の防食方法。
- 前記方法によって処理されるステンレス鋼は:ステンレス鋼板波形充填物、ステンレス鋼ワイヤメッシュ充填物、ステンレス鋼ルーズ充填物、ステンレス鋼トレープレート、ステンレス鋼フロート弁、ステンレス鋼締着具、及びステンレス鋼コネクタからなる群から選択される、請求項1から請求項3のいずれかに記載の防食方法。
- 請求項1から請求項11のいずれかに記載の防食方法のステンレス鋼の処理における使用であって、ステンレス鋼は:ステンレス鋼板波形充填物、ステンレス鋼ワイヤメッシュ充填物、ステンレス鋼ルーズ充填物、ステンレス鋼トレープレート、ステンレス鋼フロート弁、ステンレス鋼締着具、及びステンレス鋼コネクタからなる群から選択される、使用。
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CN201610673582.9A CN106435585B (zh) | 2016-08-16 | 2016-08-16 | 一种不锈钢件的表面cts抗腐蚀处理方法 |
CN201610673582.9 | 2016-08-16 | ||
PCT/CN2017/097656 WO2018033096A1 (zh) | 2016-08-16 | 2017-08-16 | 一种不锈钢件的表面cts抗腐蚀处理方法 |
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CN106399990B (zh) * | 2016-08-16 | 2019-09-20 | 深圳市诚达科技股份有限公司 | 一种基于不锈钢表面的抗结焦纳米材料及其制备方法 |
CN106567061B (zh) * | 2016-08-16 | 2019-09-20 | 深圳市诚达科技股份有限公司 | 一种基于不锈钢表面的纳米结晶材料及其制备方法 |
CN106435585B (zh) * | 2016-08-16 | 2019-07-12 | 深圳市诚达科技股份有限公司 | 一种不锈钢件的表面cts抗腐蚀处理方法 |
CN107675160B (zh) * | 2017-10-17 | 2019-01-22 | 河南省科学院能源研究所有限公司 | 一种奥氏体不锈钢设备化学清洗后的预膜工艺 |
CN109023449B (zh) * | 2018-08-21 | 2020-08-28 | 河北科技师范学院 | 一种超疏水镀层材料、超疏水镀层材料的制备方法及其应用 |
CN114107976B (zh) * | 2020-08-28 | 2023-07-04 | 湖北大学 | 一种基于碱性化学水热法制备黑色超疏水不锈钢的方法 |
CN114737194A (zh) * | 2021-01-07 | 2022-07-12 | 深圳市诚达科技股份有限公司 | 一种不锈钢材料的表面修复方法 |
CN112981056B (zh) * | 2021-02-08 | 2022-04-12 | 南昌大学 | 一种应用于含氧高温氯腐蚀环境的改性904l合金的制备方法 |
CN114108044B (zh) * | 2021-11-29 | 2023-09-15 | 深圳市诚达科技股份有限公司 | 一种常温下对奥氏体不锈钢设备表面进行处理的工艺 |
CN114657570B (zh) * | 2022-03-03 | 2023-10-20 | 青岛理工大学 | 一种z型异质结阴极保护光阳极膜及其制备方法和应用 |
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JPS59162254A (ja) | 1983-03-01 | 1984-09-13 | Takeshi Masumoto | 加工性に優れたFe基合金材料 |
JPH0668153B2 (ja) * | 1987-06-08 | 1994-08-31 | アベル株式会社 | クロム合金の表面処理法 |
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CN106567061B (zh) * | 2016-08-16 | 2019-09-20 | 深圳市诚达科技股份有限公司 | 一种基于不锈钢表面的纳米结晶材料及其制备方法 |
CN106435585B (zh) * | 2016-08-16 | 2019-07-12 | 深圳市诚达科技股份有限公司 | 一种不锈钢件的表面cts抗腐蚀处理方法 |
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- 2017-08-16 JP JP2019530532A patent/JP6970199B2/ja active Active
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EP3502316A4 (en) | 2020-04-22 |
US11319632B2 (en) | 2022-05-03 |
WO2018033096A1 (zh) | 2018-02-22 |
CN106435585A (zh) | 2017-02-22 |
DK3502316T3 (da) | 2023-06-19 |
HUE062088T2 (hu) | 2023-09-28 |
JP2019529719A (ja) | 2019-10-17 |
ES2948713T3 (es) | 2023-09-18 |
CN106435585B (zh) | 2019-07-12 |
PL3502316T3 (pl) | 2023-08-28 |
US20190186021A1 (en) | 2019-06-20 |
EP3502316B1 (en) | 2023-04-12 |
EP3502316A1 (en) | 2019-06-26 |
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