KR950018651A - 표면외관, 내식성 및 용접성이 우수한 크로메이트 피막형성방법 - Google Patents

표면외관, 내식성 및 용접성이 우수한 크로메이트 피막형성방법 Download PDF

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KR950018651A
KR950018651A KR1019930028644A KR930028644A KR950018651A KR 950018651 A KR950018651 A KR 950018651A KR 1019930028644 A KR1019930028644 A KR 1019930028644A KR 930028644 A KR930028644 A KR 930028644A KR 950018651 A KR950018651 A KR 950018651A
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chromate
coating
corrosion resistance
weldability
surface appearance
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KR1019930028644A
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KR960008152B1 (ko
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김상헌
김황식
신정철
이규헌
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조말수
포항종합제철 주식회사
백덕현
재단법인산업과학기술연구소
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Priority to KR1019930028644A priority Critical patent/KR960008152B1/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
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C09D133/08—Homopolymers or copolymers of acrylic acid esters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • 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
    • C23C22/26—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 organic compounds
    • C23C22/27—Acids

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

본 발명은 크로메이트 처리용액과 방법을 개선함으로서 표면외관 및 내식성이 우수하고 또한 전기스팟 용접성이 우수한 크로메이트 피막을 형성시키는 방법을 제공하고자 하는데, 그 목적이 있다.
본 발명은 아연도금강판에 크로메이트 피막을 형성시키는 방법에 있어서, 총크롬농도 : 5-25g/ℓ, 상기 총크롬농도 대비 환원된 크롬3가 이온비율 : 20-50%, 실리카 고형분 : 80-100g/ℓ, 아크릴 에멀젼 수지 고형분 : 0.1-20g/ℓ로 조성되고, 초산, 인산 및 개미산 중에서 선택된 1종 또는 2종 이상이 첨가되어 용액의 pH가 3-4로 조절된 크로메이트 처리용액을 상기 강판에 도포한 후 수세처리없이 건조하여 피막부착량을 100-1000mg/㎡, 상기 피막중의 Cr부착량을 30-200mg/㎡가 되도록 하는 것을 특징으로 하는 표면외관, 내식성 및 용접성이 우수한 크로메이트 피막 형성방법에 관한 것을 그 요지로 한다.

Description

표면외관, 내식성 및 용접성이 우수한 크로메이트 피막 형성방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (3)

  1. 아연계 도금강판에 크로메이트 피막을 형성시키는 방법에 있어서, 총 크롬농도 : 5-25g/ℓ, 상기 총크롬농도 대비 환원된 크롬3가 이온비율 : 20-50%, 실리카 고형분 : 80-100g/ℓ, 아크릴 에멀젼 수지 고형분 : 0.1-20g/ℓ로 조성되고, 초산, 인산 및 개미산 중에서 선택된 1종 또는 2종 이상이 첨가되어 용액의 pH가 3-4로 조절된 크로메이트 처리용액을 상기 강판에 도포한 후 수세처리없이 건조하여 피막부착량 : 100-1000mg/㎡, 상기 피막중의 Cr부착량을 30-200mg/㎡이 되도록 하는 것을 특징으로 하는 표면외관, 내식성 및 용접성이 우수한 크로메이트 피막 형성방법.
  2. 제1항에 있어서, 총크롬 농도가 무수크롬산, 중크롬산 나트륨 및 중크롬산 칼륨 중에서 선택된 1종 또는 2종 이상과 스트론티움 크로메이트를 첨가하여 조성되고, 상기 스트론티움 크로메이트의 첨가량은 총 크롬농도의 1-20%가 되도록 첨가하는 것을 특징으로 하는 표면외관, 내식성 및 용접성이 우수한 크로메이트 피막 형성방법.
  3. 제1항 또는 제2항에 있어서, 실리카 고형분은 상기 실리카 표면이 알루미네이트 이온으로 처리되고, 그 실리카 평균입자크기가 18-22um인 콜로이달 실리카로 이루어진 것을 특징으로 하는 표면외관, 내식성 및 용접성이 우수한 크로메이트 피막 형성방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019930028644A 1993-12-20 1993-12-20 표면외관, 내식성 및 용접성이 우수한 크로메이트 피막형성방법 KR960008152B1 (ko)

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KR1019930028644A KR960008152B1 (ko) 1993-12-20 1993-12-20 표면외관, 내식성 및 용접성이 우수한 크로메이트 피막형성방법

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KR1019930028644A KR960008152B1 (ko) 1993-12-20 1993-12-20 표면외관, 내식성 및 용접성이 우수한 크로메이트 피막형성방법

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KR950018651A true KR950018651A (ko) 1995-07-22
KR960008152B1 KR960008152B1 (ko) 1996-06-20

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