KR970703448A - 연료 탱크용 표면처리 강판(Surface-treated steel plate for fuel tanks) - Google Patents

연료 탱크용 표면처리 강판(Surface-treated steel plate for fuel tanks) Download PDF

Info

Publication number
KR970703448A
KR970703448A KR1019960704296A KR19960704296A KR970703448A KR 970703448 A KR970703448 A KR 970703448A KR 1019960704296 A KR1019960704296 A KR 1019960704296A KR 19960704296 A KR19960704296 A KR 19960704296A KR 970703448 A KR970703448 A KR 970703448A
Authority
KR
South Korea
Prior art keywords
weight
atomic
steel sheet
plating
cracks
Prior art date
Application number
KR1019960704296A
Other languages
English (en)
Other versions
KR100242614B1 (ko
Inventor
히로유키 나가이
요시히로 가와니시
에이지 가지야마
히로유키 가시와기
신이치 쓰치야
Original Assignee
고지마 마타오
스미토모킨조쿠코교 가부시키가이샤
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 고지마 마타오, 스미토모킨조쿠코교 가부시키가이샤 filed Critical 고지마 마타오
Publication of KR970703448A publication Critical patent/KR970703448A/ko
Application granted granted Critical
Publication of KR100242614B1 publication Critical patent/KR100242614B1/ko

Links

Classifications

    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/48—After-treatment of electroplated surfaces
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
    • C23C28/322—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only
    • C23C28/3225—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only with at least one zinc-based layer
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/56—Electroplating: Baths therefor from solutions of alloys
    • C25D3/565—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of zinc
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12611—Oxide-containing component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12785—Group IIB metal-base component
    • Y10T428/12792—Zn-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12785—Group IIB metal-base component
    • Y10T428/12792—Zn-base component
    • Y10T428/12799—Next to Fe-base component [e.g., galvanized]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12951—Fe-base component

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

Zn-X 합금 도금+크로메이트로 이루어진 염료 탱크용 표면처리 강판에서 도금 전체의 X 함유량이 Ni : 9 내지 18중량%, Co : 0.02 내지 3중량%, Mn : 25 내지 45중량% 또는 Cr : 8 내지 20중량%, 도금 부착량이 5 내지 40g/㎡, 금속 Cr 환산 부착량으로 10 내지 200㎎／㎡의 크로메이트 피막을 형성하고 적어도 탱크 내면측에 상당하는 Zn-Ni 도금 피막이 ① 표면에 균열이 있으며 이러한 균열 밀도가 1㎜×1㎜의 시야 내에서의 균열에 포위된 도금 영역이 개수로 나타내어, 1,000 내지 150,000개의 범위인 동시에 이러한 균열의 최대 폭이 0.5㎛ 이하이거나 ② ESCA를 사용하는 표면 분석으로 구한 X／(X+Zn) 원자 백분율 X2가 X1≠X2(단, Xi : 도금 피막 전체의 평균치)이며 Ni : 5 내지 25원자%, Co : 0.009 내지 10원자%, Mn : 15 내지 65원자% 또는 Cr : 5 내지 25원자%이다.

Description

연료 탱크용 표면처리 강판(Surface-treated steel plate for fuel tanks)
[도면의 간단한 설명]
제2도는 내연료 부식성에 미치는 도금 부착량의 영향을 나타내는 그래프이다.
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (2)

  1. 도금 피막 전체의 합금 원소 X(X=Ni, Co, Mn 또는 Cr등)의 함유량이 각각 Ni : 9 내지 18중량%, Co : 0.02 내지 3중량%, Mn : 25 내지 45중량% 또는 Cr : 8 내지 20중량%, 한면당 도금 부착량이 5 내지 40g/㎡인 양면 Zn-X(X=Ni, Co, Mn 또는 Cr) 합금 전기 도금 강판의 적어도 탱크 내면측에 상당하는 도금 피막면위에 금속 Cr 환산 부착량으로 10 내지 200㎎／㎡의 크로메이트 피막을 형성한 표면처리 강판으로 이루어지고 적어도 탱크 내면측에 상당하는 도금 피막이 표면에 균열이 있으며 이러한 균일 밀도가 도금 피막표면의 1㎜×1㎜의 시야 내에서의 균열에 둘러싸인 영역의 개수로 나타내어, 1,000 내지 150,000개의 범위인 동시에 이러한 균열의 최대 폭이 0.5㎛ 이하임을 특징으로 하는 연료 탱크용 표면처리 강판.
  2. 도금 피막 전체의 합금 원소 X(X=Ni, Co, Mn 또는 Cr등)의 함유량이 각각 Ni : 9 내지 18중량%, Co : 0.02 내지 3중량%, Mn : 25 내지 45중량% 또는 Cr : 8 내지 20중량%, 한면당 도금 부착량이 5 내지 40g/㎡인 양면 Zn-X(X=Ni, Co, Mn 또는 Cr) 합금 전기 도금 강판의 적어도 탱크 내면측에 상당하는 도금 피막면 위에 금속 Cr 환산 부착량으로 10 내지 200㎎／㎡의 크로메이트 피막을 형성한 표면처리 강판으로 이루어지고 적어도 탱크 내면측에 상당하는 Zn-X 도금 피막의 ESCA를 사용하는 표면 분석으로 구한 X／(X+Zn) 원자 백분율 X2가 X1≠X2(단, Xi : 도금 피막 전체의 평균치)이며 Ni : 5 내지 25원자%, Co : 0.009 내지 10원자%, Mn : 15 내지 65원자% 또는 Cr : 5 내지 25원자%임을 특징으로 하는 연료 탱크용 표면처리 강판.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960704296A 1994-12-08 1995-12-08 연료-탱크용 표면처리 강판 KR100242614B1 (ko)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP30512594 1994-12-08
JP94-305125 1994-12-08
JP15039495 1995-06-16
JP95-150394 1995-06-16
PCT/JP1995/002516 WO1996017979A1 (fr) 1994-12-08 1995-12-08 Tole d'acier traitee en surface pour reservoirs de carburants

Publications (2)

Publication Number Publication Date
KR970703448A true KR970703448A (ko) 1997-07-03
KR100242614B1 KR100242614B1 (ko) 2000-03-02

Family

ID=26480000

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960704296A KR100242614B1 (ko) 1994-12-08 1995-12-08 연료-탱크용 표면처리 강판

Country Status (5)

Country Link
US (1) US5932359A (ko)
EP (1) EP0751240B1 (ko)
KR (1) KR100242614B1 (ko)
DE (1) DE69511250T2 (ko)
WO (1) WO1996017979A1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101449203B1 (ko) * 2012-12-27 2014-10-13 현대자동차주식회사 브레이크 호스피팅 코팅방법 및 코팅층

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69625365T2 (de) * 1996-06-06 2003-09-11 Sumitomo Metal Ind Oberflächenbehandeltes stahlblech mit hervorragenden korrosionseigenschaften nach der bearbeitung
US6387229B1 (en) 1999-05-07 2002-05-14 Enthone, Inc. Alloy plating
GB9910681D0 (en) * 1999-05-07 1999-07-07 Enthone Omi Benelux Bv Alloy plating
JP4072304B2 (ja) * 2000-05-12 2008-04-09 新日本製鐵株式会社 環境適合性に優れた自動車用燃料容器材料および自動車用燃料容器
MY160923A (en) * 2010-03-25 2017-03-31 Nippon Steel Corp Steel sheet for container excellent in corrosion resistance
JP5093409B2 (ja) * 2010-08-18 2012-12-12 新日本製鐵株式会社 耐食性に優れた飲料缶用鋼板
CN107208278B (zh) * 2015-02-03 2019-06-21 日本制铁株式会社 燃料罐用钢板

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5767186A (en) * 1980-10-08 1982-04-23 Nippon Steel Corp Steel plate for fuel container
JPS5845396A (ja) * 1981-09-11 1983-03-16 Nippon Steel Corp 燃料容器用Ｎｉ−Ｚｎ合金メツキ鋼板
JPS58117891A (ja) * 1981-12-30 1983-07-13 Nippon Steel Corp 自動車用両面異種電気合金メツキ鋼板
JPS60149786A (ja) * 1984-01-17 1985-08-07 Kawasaki Steel Corp 耐食性に優れた亜鉛系合金電気めつき鋼板の表面処理方法
US4707415A (en) * 1985-03-30 1987-11-17 Sumitomo Metal Industries, Ltd. Steel strips with corrosion resistant surface layers having good appearance
JPS62297490A (ja) * 1986-06-17 1987-12-24 Kawasaki Steel Corp 加工性、めつき密着性および溶接性に優れた黒色化表面処理鋼材
US4940639A (en) * 1988-07-07 1990-07-10 Sumitomo Metal Industries, Ltd. Zn-Ni alloy-plated steel sheet with improved impact adhesion
US5422192A (en) * 1989-10-06 1995-06-06 Usui Kokusai Sangyo Kaisha Ltd. Steel product with heat-resistant, corrosion-resistant plating layers
EP0453374B1 (en) * 1990-04-20 1995-05-24 Sumitomo Metal Industries, Ltd. Improved corrosion-resistant surface coated steel sheet
JPH0689473B2 (ja) * 1990-04-25 1994-11-09 新日本製鐵株式会社 耐食性の優れた防錆鋼板
JPH0781198B2 (ja) * 1990-08-01 1995-08-30 新日本製鐵株式会社 乾温交番環境にすぐれた防錆鋼板
JPH04337099A (ja) * 1991-05-14 1992-11-25 Sumitomo Metal Ind Ltd 耐衝撃密着性に優れた高耐食性表面処理鋼板
JPH0525679A (ja) * 1991-07-20 1993-02-02 Sumitomo Metal Ind Ltd 耐衝撃密着性に優れた高耐食性表面処理鋼板

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101449203B1 (ko) * 2012-12-27 2014-10-13 현대자동차주식회사 브레이크 호스피팅 코팅방법 및 코팅층

Also Published As

Publication number Publication date
DE69511250D1 (de) 1999-09-09
KR100242614B1 (ko) 2000-03-02
US5932359A (en) 1999-08-03
EP0751240A4 (ko) 1997-01-08
DE69511250T2 (de) 2000-02-03
EP0751240A1 (en) 1997-01-02
EP0751240B1 (en) 1999-08-04
WO1996017979A1 (fr) 1996-06-13

Similar Documents

Publication Publication Date Title
KR890700471A (ko) 고내식성 표면처리강판
KR950000924A (ko) 복합아연 또는 아연합금 전기도금 금속판 및 그 제조 방법
KR970703448A (ko) 연료 탱크용 표면처리 강판(Surface-treated steel plate for fuel tanks)
Townsend Coated Steel Sheets for Corrosion-Resistant Automobiles
TW475002B (en) Perforative corrosion resistant galvanized steel sheet
KR910021499A (ko) 도금성과 용접성이 뛰어난 표면 처리강판 및 그 제조방법
GB2101010A (en) Weldable paint-coated steel sheets having excellent corrosion resistance
GB2227252A (en) Electroplating steel sheets with fe-b alloy prior to hot-dip metal coating
CA2261749A1 (en) Rustproof steel sheet for automobile fuel tank with excellent resistance weldability corrosion resistance and press moldability
US3484350A (en) Method of producing trim members
KR920021742A (ko) 2개의 전기도금층을 지닌 윤활성, 내식성 및 도장가공성에 뛰어난 전기 아연 도금 강판
KR910001090A (ko) 복수의 도금층을 갖인. 가공성. 내식성 및 내수도료 밀착성이 우수한 전기도금강판
KR960034463A (ko) 아연계 도금강판용의 전해 크로메이트욕 및 그것을 사용한 내식성, 내지문성 및 내크롬 용출성이 우수한 전해 크로메이트처리 아연계 도금강판의 제조방법
KR870009053A (ko) 고내식성 표면 처리강판
KR960023229A (ko) 내식성이 우수한 아연-철계합금 전기도금강판의 제조방법
JPS6465296A (en) Very thin material for welded can having superior seam weldability, corrosion resistance and coatability
JPS5531124A (en) Chrome plated steel plate excelling in weldability
Blekkenhorst et al. Corrosion Control by the Application of Various Low Alloy Steels in Marine Environments
JPS6050195A (ja) めっき層濃度傾斜型Ζｎ合金めつき鋼板
KR100244631B1 (ko) 도장후 내식성 및 가공성이 우수한 아연-철합금 전기도금 강판 제조방법
KR940014887A (ko) 아연-알루미늄 합금도금강판
Bragard et al. STEEL SHEETS WITH ZINC-BASED COATINGS, THEIR BEHAVIOR IN MANUFACTURING OPERATIONS, THEIR PROPERTIES IN SERVICE
TH45972A (th) แผ่นเหล็กกล้าที่เคลือบสังกะสีที่ปรับสภาพด้วยฟอสเฟทที่มีความทนทานต่อการกัดกร่อนและความสามารถในการทาสีได้อย่างยอดเยี่ยม
TH24910B (th) แผ่นเหล็กกล้าที่เคลือบสังกะสีที่ปรับสภาพด้วยฟอสเฟทที่มีความทนทานต่อการกัดกร่อนและความสามารถในการทาสีได้อย่างยอดเยี่ยม
KR920008223A (ko) 두가지 도금층을 가진 전착 도장성 및 프레스 성형성이 우수한 철-아연 합금 도금 강판

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20081110

Year of fee payment: 10

LAPS Lapse due to unpaid annual fee