KR960017917A - 내식성이 우수한 아연도금 강판용 크로메이트 처리용액의 제조방법 - Google Patents

내식성이 우수한 아연도금 강판용 크로메이트 처리용액의 제조방법 Download PDF

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KR960017917A
KR960017917A KR1019940028958A KR19940028958A KR960017917A KR 960017917 A KR960017917 A KR 960017917A KR 1019940028958 A KR1019940028958 A KR 1019940028958A KR 19940028958 A KR19940028958 A KR 19940028958A KR 960017917 A KR960017917 A KR 960017917A
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South Korea
Prior art keywords
chromate treatment
treatment solution
steel sheet
corrosion resistance
galvanized steel
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KR1019940028958A
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English (en)
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KR0124833B1 (ko
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이윤주
민광태
정재륜
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김만제
포항종합제철 주식회사
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Priority to KR1019940028958A priority Critical patent/KR0124833B1/ko
Publication of KR960017917A publication Critical patent/KR960017917A/ko
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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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • 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
    • C23C22/24—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 hexavalent chromium compounds
    • C23C22/30—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 hexavalent chromium compounds containing also trivalent chromium
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • 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
    • C23C22/24—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 hexavalent chromium compounds
    • C23C22/33—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 hexavalent chromium compounds containing also phosphates

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

본 발명은 크로메이트 처리용액의 성분과 그 조합비를 조정하므로서 내식식이 우수한 아연도금 강판용 크로메이트 처리영액을 제공하고자 하는데 그 목적이 있다. 본 발명은 무수크롬산（CrO3）의 농도가 10∼50g／ℓ인 무수크롬산 수용액에 환원제를 첨가하여 크롬 6가로부처 환원된 크롬 3가의 양을 용액중 총크롬농도의 15∼45％가 되도록 환원시킨 다음, 15∼40g／ℓ의 인산, 0.2∼0.6g／ℓ의 코발트 이온 및 의 실리카졸을 첨가하는 것을 특징으로 하는 내식성이 우수한 아연도금 강판용 크로메이트 처리용액의 제조방법을 제공함을 그 요지로 한다.

Description

내식성이 우수한 아연도금 강판용 크로메이트 처리용액의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (3)

  1. 무수크롬산（CrO3）의 농도가 10∼50g／ℓ인 무수크롬산 수용액에 환원제를 첨가하여 크롬6가로부터 환원된 크롬 3가의 양을 용액중 총크롬농도의 15∼45％가 되도록 환원시킨 다음, 15∼45g／ℓ의 인산, 0.2∼0.6g／ℓ의 코발트 이온 및 20~50g/ℓ의 실리카졸을 첨가하는 것을 특징으로 하는 내식성리 우수한 아연도금 강판용 크로메이드 처리용액의 제조방법,
  2. 제1항에 있어서, 상기 환원제는 에틸알콜, 메칠알콜, 및 에틸렌 글리콜로 이우어진 그룹중에서 선택된 1종 또는 2종 이상인 것을 특징으로 하는 내식성이 우수한 아연 도금강판용 크로메이트 처리용액의 제조방법.
  3. 제1항 또는 제2항에 있어서, 상기 코발드 이온은 CoSO4또는 CoSO4·7H2O 중에서 선택된 1종의 코발트 황화물 형태로 첨가됨을 특징으로 하는 내식성이 우수한 아연도금 강판용 크로메이트 처리용액의 제조방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940028958A 1994-11-05 1994-11-05 내식성이 우수한 아연도금강판용 크로메이트 처리용액의 제조방법 KR0124833B1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940028958A KR0124833B1 (ko) 1994-11-05 1994-11-05 내식성이 우수한 아연도금강판용 크로메이트 처리용액의 제조방법

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940028958A KR0124833B1 (ko) 1994-11-05 1994-11-05 내식성이 우수한 아연도금강판용 크로메이트 처리용액의 제조방법

Publications (2)

Publication Number Publication Date
KR960017917A true KR960017917A (ko) 1996-06-17
KR0124833B1 KR0124833B1 (ko) 1997-12-26

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KR1019940028958A KR0124833B1 (ko) 1994-11-05 1994-11-05 내식성이 우수한 아연도금강판용 크로메이트 처리용액의 제조방법

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