KR100742832B1 - 스팡글이 없는 용융아연도금 강판, 그 제조방법 및 이에사용되는 장치 - Google Patents
스팡글이 없는 용융아연도금 강판, 그 제조방법 및 이에사용되는 장치 Download PDFInfo
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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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
- C23C2/0034—Details related to elements immersed in bath
- C23C2/00342—Moving elements, e.g. pumps or mixers
- C23C2/00344—Means for moving substrates, e.g. immersed rollers or immersed bearings
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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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
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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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
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- 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.]
- Y10T428/12736—Al-base component
- Y10T428/1275—Next to Group VIII or IB metal-base component
- Y10T428/12757—Fe
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- 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
- Y10T428/12972—Containing 0.01-1.7% carbon [i.e., steel]
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Abstract
Description
Claims (19)
- 용융아연도금층 표층부에 존재하는 Al중 50%이상의 Al이 결정입계 부근에 존재하며, 100배의 현미경으로 볼때 수지상정의 응고흔적이 없는 용융아연도금강판.
- 제 1항에 있어서, 상기 용융아연도금층에서 응고된 아연결정의 평균 결정조직 입자직경이 10~88㎛임을 특징으로 하는 용융아연도금강판.
- 제 1항에 있어서, 상기 용융아연도금강판 표면에서 임의로 선택된 반경 5 mm인 원형 면적에서 도금층에 형성된 산과 골의 높이 차이가 도금두께의 25 % 미만임을 특징으로 하는 용융아연도금강판.
- 제 1항 내지 3항중 어느 한항에 있어서, 상기 용융아연도금층에서 직경이 88㎛를 초과하는 아연 결정입자가 도금층 조직에 10% 미만으로 존재함을 특징으로 하는 용융아연도금강판.
- 제 1항 내지 3항중 어느 한항에 있어서, 상기 용융아연도금층은 표층부에 인이 0.1-500 mg/㎡으로 함유됨을 특징으로 하는 용융아연도금강판.
- 용융아연도금강판용 강판을 용융아연 도금하기 위하여 준비하는 단계;알루미늄이 0.13~0.3wt% 포함된 아연 도금액 욕조에 상기 강판을 침지하는 단계;상기 도금액이 부착된 상기 강판을 과잉의 도금액을 제거하기 위해 에어와이핑 단계;에어와이핑 처리된 상기 강판 표면에 용융아연도금처리온도-419℃의 강판온도를 분사개시 온도로 그리고 417-415℃의 강판온도를 분사종료 온도로 하여 물 및 수용액으로 구성되는 그룹으로 부터 선택된 최소 일종을 분사하는 단계;상기 분사된 물 또는 수용액 액적이 -1~-50 kV의 고전압으로 대전된 메쉬형태의 고전압 대전전극을 통과하는 단계; 및상기 대전전극을 통과한 액적이 상기 강판의 표면에 부착되어 용융아연의 응고핵으로 작용하는 단계;를 포함하며, 상기 분사된 물 또는 수용액 액적 중에서 상기 강판에 부착되는 액적 이외의 액적은 흡기 후드(suction hood)에 의하여 제거되는 단계를 포함하는 용융아연도금강판의 제조방법.
- 제 6항에 있어서, 상기 분사개시 온도는 420-419℃의 강판온도임을 특징으로 하는 용융아연도금강판의 제조방법.
- 제 6항에 있어서, 상기 물 또는 수용액은 2류체 분사노즐에 의하여 액적이 분사됨을 특징으로 하는 용융아연도금강판의 제조방법.
- 제 6항 내지 제 8항중 어느 한항에 있어서, 상기 수용액은 인산염의 농도를 인산으로 환산하여 0.01-5wt%를 함유하는 인산염 수용액임을 특징으로 하는 용융아연도금강판의 제조방법.
- 제 6항 내지 8항중 어느 한항에 있어서, 상기 용융아연도금층은 표층부에 인이 0.1-500 mg/㎡으로 함유됨을 특징으로 하는 용융아연도금강판의 제조방법.
- 제 6항에 있어서, 상기 액적은 물 또는 수용액 압력 0.3~5 kgf/㎠, 공기 압력 0.5~7 kgf/㎠ 그리고 물 또는 수용액 압력/공기압력의 비율이 1/10~8/10인 용융아연도금강판의 제조방법.
- 제 6항 있어서, 상기 분사되는 액적 중에서 도금조로 낙하되는 액적은 에어 커튼(air curtain)으로 취입되는 공기에 의하여 제거되는 용융아연도금강판의 제조방법.
- 삭제
- 제 6항에 있어서, 상기 고전압은 직류, 펄스 혹은 직류에 펄스 고전압을 부가하여 인가함을 특징으로 하는 용융아연도금강판의 제조방법.
- 제 14항에 있어서, 상기 펄스 고전압은 주파수가 1000Hz이하임을 특징으로 하는 용융아연도금강판의 제조방법.
- 아연도금조 상부에 위치하여 도금된 강판의 도금 부착량을 조절하는 한쌍의 에어 나이프; 에어 나이프 상부의 분사조 내에 강판을 향하여 위치하는 하나 또는 그 이상의 물 또는 수용액 분사노즐; 상기 분사노즐과 강판사이에 위치한 메쉬 형태의 대전전극; 및 상기 분사조 상단에 위치하는 흡기후드를 포함하는 용융아연도금 강판의 제조장치.
- 제 16항에 있어서, 상기 분사조 하단에 에어 커튼을 추가로 포함하여 아연도금조로부터 올라오는 기류를 차단함을 특징으로 하는 용융아연도금 강판의 제조장치.
- 제 17항에 있어서, 상기 에어 커튼은 강판 표면에 평행한 슬릿(slit) 모양의 공기 분사 구멍을 가지고 있음을 특징으로 하는 용융아연도금 강판의 제조장치.
- 삭제
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US (1) | US7914851B2 (ko) |
EP (1) | EP1831419B1 (ko) |
JP (1) | JP4460610B2 (ko) |
KR (1) | KR100742832B1 (ko) |
CN (1) | CN101115858B (ko) |
AU (1) | AU2005320450B2 (ko) |
BR (1) | BRPI0519664A2 (ko) |
CA (1) | CA2592530C (ko) |
MX (1) | MX2007007844A (ko) |
TR (1) | TR200704440T1 (ko) |
WO (1) | WO2006070995A1 (ko) |
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KR101171449B1 (ko) * | 2009-12-28 | 2012-08-06 | 주식회사 포스코 | 심가공성 및 극저온 접합취성이 우수한 용융아연도금강판 및 그 제조방법 |
WO2012099284A1 (ko) * | 2011-01-20 | 2012-07-26 | 주식회사 포스코 | 심가공성 및 극저온 접합취성이 우수한 용융아연도금강판 및 그 제조방법 |
WO2017111484A1 (ko) | 2015-12-22 | 2017-06-29 | 주식회사 포스코 | 표면 품질 및 저온 취성 파괴 저항성이 우수한 용융 아연계 도금강판 |
US11078564B2 (en) | 2015-12-22 | 2021-08-03 | Posco | Hot-dip galvanized steel sheet with excellent surface quality and resistance to low temperature brittle fracture |
US10982309B2 (en) | 2016-08-22 | 2021-04-20 | Posco | Hot-rolled galvanized steel sheet having excellent galling resistance, formability and sealer-adhesion property and method for manufacturing same |
WO2019125020A1 (ko) | 2017-12-24 | 2019-06-27 | 주식회사 포스코 | 저온 밀착성과 가공성이 우수한 용융아연도금강판 및 그 제조방법 |
KR20190077199A (ko) | 2017-12-24 | 2019-07-03 | 주식회사 포스코 | 저온 밀착성과 가공성이 우수한 용융아연도금강판 및 그 제조방법 |
US11338551B2 (en) | 2017-12-24 | 2022-05-24 | Posco | Hot-dip galvanized steel sheet having excellent low-temperature adhesion and workability |
WO2020111798A1 (ko) | 2018-11-29 | 2020-06-04 | 주식회사 포스코 | 표면외관 및 저온 접합취성이 우수한 용융아연도금강판 |
KR20200064814A (ko) | 2018-11-29 | 2020-06-08 | 주식회사 포스코 | 표면외관 및 저온 접합취성이 우수한 용융아연도금강판 |
US11801665B2 (en) | 2018-11-29 | 2023-10-31 | Posco Co., Ltd | Hot-dip galvanized steel sheet having excellent surface appearance and low-temperature bonding brittleness |
KR20220028261A (ko) | 2020-08-28 | 2022-03-08 | 포스코강판 주식회사 | 표면 스팽글 패턴이 형성된 내식성이 우수한 Zn-Mg-Al 도금강판 및 그 제조방법 |
Also Published As
Publication number | Publication date |
---|---|
WO2006070995A1 (en) | 2006-07-06 |
CA2592530A1 (en) | 2006-07-06 |
JP2008525641A (ja) | 2008-07-17 |
AU2005320450A1 (en) | 2006-07-06 |
MX2007007844A (es) | 2008-02-19 |
JP4460610B2 (ja) | 2010-05-12 |
EP1831419A4 (en) | 2009-08-12 |
BRPI0519664A2 (pt) | 2009-03-03 |
CN101115858B (zh) | 2010-05-12 |
CN101115858A (zh) | 2008-01-30 |
KR20060076214A (ko) | 2006-07-04 |
AU2005320450B2 (en) | 2011-01-20 |
TR200704440T1 (tr) | 2007-08-21 |
CA2592530C (en) | 2010-05-11 |
EP1831419B1 (en) | 2012-06-13 |
US20080206592A1 (en) | 2008-08-28 |
EP1831419A1 (en) | 2007-09-12 |
US7914851B2 (en) | 2011-03-29 |
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