KR20120050732A - Electroplated steel sheet having hair line appearance and method for manudacturing the same - Google Patents
Electroplated steel sheet having hair line appearance and method for manudacturing the same Download PDFInfo
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- KR20120050732A KR20120050732A KR1020100112135A KR20100112135A KR20120050732A KR 20120050732 A KR20120050732 A KR 20120050732A KR 1020100112135 A KR1020100112135 A KR 1020100112135A KR 20100112135 A KR20100112135 A KR 20100112135A KR 20120050732 A KR20120050732 A KR 20120050732A
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- steel sheet
- hairline
- plating layer
- electroplated steel
- treatment
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 58
- 239000010959 steel Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 claims abstract description 7
- 238000007747 plating Methods 0.000 claims description 51
- 239000010410 layer Substances 0.000 claims description 36
- 239000003973 paint Substances 0.000 claims description 16
- 238000005530 etching Methods 0.000 claims description 15
- 238000009713 electroplating Methods 0.000 claims description 12
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 10
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 9
- 239000011247 coating layer Substances 0.000 claims description 8
- 229910017061 Fe Co Inorganic materials 0.000 claims description 6
- PMVSDNDAUGGCCE-TYYBGVCCSA-L Ferrous fumarate Chemical compound [Fe+2].[O-]C(=O)\C=C\C([O-])=O PMVSDNDAUGGCCE-TYYBGVCCSA-L 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 238000010306 acid treatment Methods 0.000 claims description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 5
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 claims description 5
- 230000008021 deposition Effects 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims 2
- 229910052804 chromium Inorganic materials 0.000 claims 2
- 239000011651 chromium Substances 0.000 claims 2
- 238000005260 corrosion Methods 0.000 abstract description 18
- 230000007797 corrosion Effects 0.000 abstract description 17
- 229910045601 alloy Inorganic materials 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 abstract description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- 239000011701 zinc Substances 0.000 abstract 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract 1
- 229910017052 cobalt Inorganic materials 0.000 abstract 1
- 239000010941 cobalt Substances 0.000 abstract 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 229910052725 zinc Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 12
- 229910001220 stainless steel Inorganic materials 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000005498 polishing Methods 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000010960 cold rolled steel Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910007567 Zn-Ni Inorganic materials 0.000 description 1
- 229910007614 Zn—Ni Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 201000009240 nasopharyngitis Diseases 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
-
- 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
- C23C2/265—After-treatment by applying solid particles to the molten coating
-
- 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
-
- 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
- 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
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
-
- 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
- C25D3/04—Electroplating: Baths therefor from solutions of chromium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
Description
본 발명은 헤어라인 외관을 갖는 전기도금강판 및 그의 제조방법에 관한 것으로서, 보다 상세하게는 스테인레스 강재의 용도와 동일하게 사용할 수 있는 내식성 및 광택성이 우수한 헤어라인 외관을 갖는 전기도금강판 및 그의 제조방법에 관한 것이다.The present invention relates to an electroplated steel sheet having a hairline appearance and a method of manufacturing the same, and more particularly, to an electroplated steel sheet having a hairline appearance excellent in corrosion resistance and glossiness, which can be used in the same manner as the use of stainless steel, and its manufacture. It is about a method.
일반적으로 스테인레스 강재는 미려한 표면외관을 지니기 위하여 표면 마무리가 행해지게 되는데, 표면 마무리의 대표적인 예로는 강재 표면에 헤어라인 무늬를 형성하는 방법이 있다. 이러한 헤어라인 마무리는 강재의 표면을 적당한 연마재로 연마하여 연마자국이 남도록 함으로써 연마표면이 머리카락처럼 길게 연속적으로 라인이 형성되도록 하는 마무리 방법을 의미한다. 따라서, 이러한 표면 마무리가 행해지는 스테인레스 강재는 내식성이 우수하면서도 미려한 표면외관을 갖고 있는 대표적인 강재로 알려져 있으며, 건축물이나 차량 등의 내장재나 외장재 등에 널리 사용되고 있다.
In general, stainless steel is a surface finish to have a beautiful surface appearance, a representative example of the surface finish is a method of forming a hairline pattern on the steel surface. This hairline finishing means a finishing method in which the surface of the steel is polished with a suitable abrasive so that polishing marks remain, so that the polishing surface is continuously formed as long as hair. Therefore, stainless steels having such a surface finish are known as representative steels having excellent corrosion resistance and beautiful surface appearance, and are widely used in interior materials and exterior materials such as buildings and vehicles.
그러나, 스테인레스 강판은 가격이 높아 비경제적이며, 헤어라인 무늬 형성 후에는 지문자국이나 외부 오염 방지를 위해 추가 도장을 행하나 스테인레스 표면과 도장의 부착성 등에 문제가 존재하게 된다. 또한, 표면 마무리를 위해 강판에 헤어라인이 인쇄된 필름을 붙이기도 하는데 필름의 인쇄무늬가 다양하지 못해 사용하는데 한계가 있다.
However, stainless steel sheet is expensive and uneconomical, and after the hairline pattern is formed, additional coating is performed to prevent fingerprint marks and external contamination, but there are problems such as adhesion between the stainless surface and the coating. In addition, a hairline-printed film is attached to the steel sheet for surface finishing, but the printed pattern of the film is not diverse, so there is a limit to use.
비용의 한계를 극복하기 위하여 도금된 강판에 헤어라인을 형성하여 도장 또는 필름을 사용하는 경우도 있으나, 도금 후에는 헤어라인의 형체가 불명확하게 되는 문제가 있으며, 헤어라인 무늬를 발생시키기 위하여, 도금된 표면을 다시 제거해야하므로, 내식성과 광택성이 감소하게 되는 문제가 발생하며, 비싼 도금재가 제거되기 때문에 결과적으로 비용 또한 상승하게 된다.In order to overcome the limitation of the cost, the hairline is formed on the plated steel sheet to use the coating or film, but after plating, the shape of the hairline becomes unclear. In order to generate the hairline pattern, the plating is performed. Since the surface must be removed again, there is a problem of reducing corrosion resistance and glossiness, and as a result, expensive plating material is removed, resulting in a cost increase.
본 발명의 일측면은 알루미늄 또는 스테인레스 강재의 용도와 동일하게 사용할 수 있는 내식성 및 광택성이 우수한 헤어라인 외관을 갖는 전기도금강판 및 그의 제조방법을 제공하고자 하는 것이다.One aspect of the present invention is to provide an electroplated steel sheet having a hairline appearance excellent in corrosion resistance and gloss that can be used in the same way as the use of aluminum or stainless steel and its manufacturing method.
본 발명은 Zn-Fe, Zn-Fe-Ni 및 Zn-Fe-Co로 이루어진 그룹으로부터 선택된 1종 이상의 철계 아연합금 도금층을 포함하며, 상기 도금층의 경도가 90~500Hv인 헤어라인 외관을 갖는 전기도금강판을 제공한다.The present invention comprises at least one iron-based zinc alloy plating layer selected from the group consisting of Zn-Fe, Zn-Fe-Ni and Zn-Fe-Co, the plating layer of the electroplating having a hairline appearance of 90 ~ 500Hv hardness Provide the steel sheet.
이 때, 상기 도금층의 부착량은 1~40g/m2인 것이 바람직하며, 광택도는 70이상인 것이 바람직하다. 또한, 상기 전기도금강판은 인산처리, 크로메이트 처리 및 크롬 프리 처리로 이루어지는 그룹으로부터 선택된 1종 이상의 후처리가 행해진 것이 바람직하며, 상기 전기도금강판은 투명 클리어 도료, 반투명 클리어 도료 또는 유색 도료를 포함하는 도막층이 형성된 것이 바람직하다.
At this time, it is preferable that the adhesion amount of the said plating layer is 1-40 g / m <2> , and it is preferable that glossiness is 70 or more. In addition, the electroplated steel sheet is preferably one or more post-treatment selected from the group consisting of phosphoric acid treatment, chromate treatment and chromium-free treatment, the electroplating steel sheet comprises a transparent clear paint, translucent clear paint or colored paint It is preferable that a coating film layer was formed.
본 발명은 강판에 헤어라인 무늬를 형성하는 헤어라인 형성단계; 및 상기 헤어라인 무늬가 형성된 강판에 90~500Hv의 경도를 갖는 Zn-Fe, Zn-Fe-Ni 및 Zn-Fe-Co로 이루어진 그룹으로부터 선택된 1종 이상의 철계 아연합금을 전기도금하여 도금층을 형성하는 도금층 형성 단계를 포함하는 헤어라인 외관을 갖는 전기도금강판의 제조방법을 제공한다.The present invention provides a hairline forming step of forming a hairline pattern on a steel sheet; And electroplating at least one iron-based zinc alloy selected from the group consisting of Zn-Fe, Zn-Fe-Ni, and Zn-Fe-Co having a hardness of 90 to 500 Hv on the steel line patterned steel plate to form a plating layer. It provides a method for producing an electroplated steel sheet having a hairline appearance including the step of forming a plating layer.
이 때, 상기 도금층의 부착량은 1~40g/m2인 것이 바람직하며, 상기 도금층 형성 단계 후, pH가 1~6인 산용액으로 에칭을 행하는 단계를 추가로 포함할 수 있다. 상기 에칭은 0.1~30초동안 행하는 것이 바람직하다. 또한, 상기 전기도금강판은 인산처리, 크로메이트 처리 및 크롬 프리 처리로 이루어지는 그룹으로부터 선택된 1종 이상의 후처리를 행하는 단계를 추가로 포함할 수 있으며, 투명 클리어 도료, 반투명 클리어 도료 또는 유색 도료를 도포하는 도막층 형성 단계를 추가로 포함할 수 있다.At this time, the deposition amount of the plating layer is preferably 1 ~ 40g / m 2 , and after the plating layer forming step, may further comprise the step of etching with an acid solution having a pH of 1-6. The etching is preferably performed for 0.1 to 30 seconds. In addition, the electroplating steel sheet may further comprise the step of performing one or more post-treatment selected from the group consisting of phosphoric acid treatment, chromate treatment and chromium-free treatment, and applying a transparent clear paint, translucent clear paint or colored paint The coating layer forming step may be further included.
본 발명에 따르면, 연속라인을 이용하여 대량생산에 알맞은 내식성 및 광택성이 우수한 헤어라인 외관을 갖는 전기도금강판을 제공할 수 있다.According to the present invention, it is possible to provide an electroplated steel sheet having a hairline appearance excellent in corrosion resistance and glossiness suitable for mass production using a continuous line.
본 발명자들은 고가의 알루미늄 또는 스테인레스 강재를 대신하여 사용할 수 있으면서 우수한 내식성과 미려한 헤어라인 무늬를 갖는 강재에 대하여 연구를 행한 결과, 강판에 헤어라인을 우선적으로 형성한 뒤, 전기도금을 행하고, 이 때 형성되는 도금층의 경도를 적절히 제어함으로써 내식성 및 광택성이 우수한 헤어라인 외관을 가지는 전기도금강판을 제공할 수 있다는 사실을 인지하고, 이와 관련된 실험 등을 근거로 하여 본 발명을 완성하기에 이르렀다.
The present inventors conducted research on steels which can be used in place of expensive aluminum or stainless steels and have excellent corrosion resistance and beautiful hairline patterns. As a result, after forming hairlines on steel sheets preferentially, electroplating is performed. By properly controlling the hardness of the plated layer formed, it has been recognized that an electroplated steel sheet having a hairline appearance excellent in corrosion resistance and glossiness can be provided, and thus the present invention has been completed based on experiments and the like.
이하, 본 발명을 상세히 설명한다.
Hereinafter, the present invention will be described in detail.
본 발명이 제안하는 전기도금강판은 Zn-Fe, Zn-Fe-Ni 및 Zn-Fe-Co로 이루어진 그룹으로부터 선택된 1종 이상의 철계 아연합금 도금층을 포함하게 된다. 이러한 전기도금계들은 내식성이 양호하고, 전기도금으로 표면이 미려하여 양호한 헤얼라인 형상을 만들 수 있다. 물론, 상기 철계 아연합금은 불순물들을 불가피하게 함유하게 되는데, 이러한 사실은 당해 기술분야에서 통상의 지식을 가진 자에게는 자명하다 할 것이다. 이러한 철계 아연합금은 롤과의 접촉시 일정의 하중에서 헤어라인 손상이 없을 정도의 경도를 가지며, 내식성과 헤어라인을 동시에 확보할 수 있으며, 비용 또한 저렴하다는 장점이 있다.
Electroplated steel sheet proposed by the present invention will include at least one iron-based zinc alloy plating layer selected from the group consisting of Zn-Fe, Zn-Fe-Ni and Zn-Fe-Co. These electroplating systems have good corrosion resistance, and the surface is beautiful by electroplating, which makes a good hairline shape. Of course, the iron-based zinc alloy will inevitably contain impurities, which will be apparent to those of ordinary skill in the art. The iron-based zinc alloy has a hardness such that there is no damage to the hairline at a constant load upon contact with the roll, and can secure corrosion resistance and hairline at the same time, and also has the advantage of low cost.
이 때, 상기 도금층의 경도가 90~500Hv인 것이 바람직한데, 상기 도금층의 경도가 90Hv미만인 경우에는 연속도금 혹은 제품 제조시에 충격 또는 압착에 의해 헤어라인 형태가 변하여 표면이 불량해지며, 경도가 500Hv인 경우에는 가공시 표면크랙 또는 도금층의 밀착성이 불량해지므로, 상기 도금층의 경도를 90~500Hv로 한정하는 것이 바람직하다. 보다 바람직한 도금층의 경도는 120~300이다.
In this case, it is preferable that the hardness of the plating layer is 90 to 500 Hv. If the hardness of the plating layer is less than 90 Hv, the shape of the hairline changes due to impact or compression during continuous plating or product manufacture, and the surface becomes poor. In the case of 500 Hv, since the adhesion of the surface crack or the plating layer is poor during processing, it is preferable to limit the hardness of the plating layer to 90 to 500 Hv. The hardness of the more preferable plating layer is 120-300.
또한, 상기 도금층의 부착량은 1~40g/m2의 범위를 갖는 것이 바람직하다. 상기 도금부착량이 1g/m2미만인 경우에는 도금량이 충분하지 않아 미도금이 발생하거나 도금층이 얇아 내식성이 불량해질 수 있으며, 도금부착량이 40g/m2를 초과하게 되면 강판의 헤어라인이 선명치 않아 품질이 떨어질 수 있으므로, 상기 도금부착량은 1~40g/m2의 범위로 한정하는 것이 바람직하다. 보다 바람직한 도금부착량은 5~20g/m2이다.
Moreover, it is preferable that the adhesion amount of the said plating layer has a range of 1-40 g / m <2> . If the plating amount is less than 1g / m 2, the plating amount is not enough to cause unplating or the plating layer is thin, which may result in poor corrosion resistance.When the plating amount exceeds 40g / m 2 , the hairline of the steel sheet is not clear, so Since this may fall, the plating deposition amount is preferably limited to the range of 1 ~ 40g / m 2 . More preferable plating adhesion amount is 5-20g / m <2> .
본 발명이 제안하는 전기도금강판은 광택도가 70이상을 갖게 되는데, 이러한 수준을 만족하게 됨으로써, 본 발명의 전기도금강판은 알루미늄재 또는 스테인레스재와 같은 재료를 대신하여 사용하는 것이 가능하게 된다.
The electroplated steel sheet proposed by the present invention has a glossiness of 70 or more, and by satisfying this level, the electroplated steel sheet of the present invention can be used in place of a material such as aluminum or stainless steel.
이하, 본 발명의 제조방법에 대하여 상세히 설명한다.
Hereinafter, the manufacturing method of the present invention will be described in detail.
우선적으로 소지강판에 헤어라인을 형성시키게 된다. 본 발명에서는 상기 헤어라인 형성 방법에 대하여 특별히 한정하지는 않으나, 롤 방식 혹은 물리적 수단으로서, 소지강판 연속공급장치 중에 다양한 수의 샌드페이퍼 혹은 물리적 연마 기기 또는 이와 관련된 공정 설비로 헤어라인 무늬가 형성되도록 하는 연마 방법이 바람직하게 사용될 수 있다. 이 때, 형성되는 헤어라인 무늬는 고객사의 요구에 따라 달라질 수 있으며, 통상의 냉연강판이면 본 발명의 소지강판으로 바람직하게 활용될 수 있다.
First, the hairline is formed on the steel sheet. In the present invention, the method for forming the hairline is not particularly limited, but as a roll method or physical means, polishing is performed so that a hairline pattern is formed by various numbers of sandpaper or physical polishing equipment or related process equipment in the continuous steel sheet supplying apparatus. The method can preferably be used. At this time, the hairline pattern to be formed may vary depending on the needs of the customer, if the common cold rolled steel sheet can be preferably used as the base steel sheet of the present invention.
이 후, 상기 헤어라인이 형성된 강판에 연속장치 혹은 단발장치를 이용하여 연속 전기도금을 행하게 된다. 이 때, Zn-Fe, Zn-Fe-Ni 및 Zn-Fe-Co로 이루어진 그룹으로부터 선택된 1종 이상의 철계 아연합금을 도금재로 활용하는 것이 바람직하며, 상기 철계 아연합금의 경도는 90~500Hv를 갖게 되는 것이 바람직하다. 물론 당해 기술분야에서 통상의 지식을 지닌 자라면 각 합금의 조성성분과 함량범위, 불순물들을 고려하여 경도 수준을 용이하게 제어하는 것이 가능하다.
Subsequently, continuous electroplating is performed on the steel plate on which the hairline is formed by using a continuous device or a single device. At this time, it is preferable to utilize at least one iron-based zinc alloy selected from the group consisting of Zn-Fe, Zn-Fe-Ni and Zn-Fe-Co as a plating material, the hardness of the iron-based zinc alloy is 90 ~ 500Hv It is desirable to have. Of course, those skilled in the art can easily control the hardness level in consideration of the compositional component, content range, impurities of each alloy.
상기 전기도금시 도금층의 부착량은 1~40g/m2의 범위를 갖는 것이 바람직한데, 상기와 같이 도금부착량을 제어함으로써, 내식성과 선명한 헤어라인을 동시에 확보할 수 있다.
In the electroplating, the deposition amount of the plating layer is preferably in the range of 1 to 40 g / m 2. By controlling the plating deposition amount as described above, corrosion resistance and clear hairline can be secured at the same time.
상기와 같이, 강판에 헤어라인을 우선적으로 형성한 뒤, 전기도금을 행할 경우, 헤어라인의 형체가 불명확하게 되는 문제점을 방지할 수 있으며, 도금 후 헤어라인을 형성한 강판과는 달리, 비싼 도금재가 제거되지 않아도 되므로, 비용 절감 측면에서 유리하다. 또한, 헤어라인 형성 뒤 도금을 행하기 때문에 균일한 표면을 갖는 강판을 생산할 수 있다는 점에서 유리한 장점이 있다.
As described above, when the hairline is first formed on the steel sheet and then electroplating, the problem of unclear shape of the hairline can be prevented and, unlike the steel sheet on which the hairline is formed after plating, expensive plating The ash does not have to be removed, which is advantageous in terms of cost reduction. In addition, since the plating is performed after the hairline is formed, there is an advantage in that a steel sheet having a uniform surface can be produced.
상기 도금층 형성 단계 후, pH가 1~6인 산용액으로 에칭을 행하는 단계를 추가로 포함할 수 있다. 상기 에칭 공정을 통해 우수한 광택도를 확보할 수 있게 되는데, pH가 1미만인 경우, 도금층의 과부식으로 인해 표면이 불량해질 수 있으며, 6을 초과하는 경우, 장시간 침지하여도 광택도의 향상이 일어나지 않게 되는 문제점이 있다. 따라서, 상기 에칭시 산용액의 pH는 1~6의 범위를 갖는 것이 바람직하다. 상기 산용액으로서는 황산 또는 염산 등의 물질을 사용할 수 있다.
After the plating layer forming step, it may further comprise the step of etching with an acid solution having a pH of 1-6. Through the etching process, it is possible to secure excellent glossiness. If the pH is less than 1, the surface may be deteriorated due to overcorrosion of the plating layer. If it exceeds 6, the glossiness may not be improved even if it is immersed for a long time. There is a problem that is not. Therefore, the pH of the acid solution at the time of etching preferably has a range of 1-6. As the acid solution, substances such as sulfuric acid or hydrochloric acid can be used.
또한, 상기 에칭시간은 0.1~30초동안 행하는 것이 바람직한데, 0.1초미만인 경우에는 에칭효과를 발휘하기 어려우며, 30초를 초과하게 되면 변색이 일어날 수 있으므로, 상기 에칭시간은 0.1~30초의 범위를 갖는 것이 바람직하다.
In addition, the etching time is preferably performed for 0.1 to 30 seconds, it is difficult to exhibit the etching effect when less than 0.1 seconds, since the discoloration may occur when exceeding 30 seconds, the etching time is in the range of 0.1 to 30 seconds It is desirable to have.
상기 에칭공정을 거친 후에는 강판에 인산처리, 크로메이트 처리 또는 크롬 프리 처리와 같은 후처리를 행할 수 있는데, 이러한 후처리 공정을 통해, 백청 또는 적층과 같은 녹을 방지할 수 있으며, 도막층 형성시 도금층과 도막층의 밀착성을 향상시킬 수 있다.
After the etching process, the steel sheet may be subjected to post-treatment such as phosphoric acid treatment, chromate treatment or chromium-free treatment. Through this post-treatment process, rust such as white blue or lamination may be prevented, and the plating layer may be formed when the coating layer is formed. The adhesiveness of a coating film layer can be improved.
상기 에칭공정 후에는 도막층 형성 공정을 추가로 포함할 수 있는데, 상기 도막층 형성 공정을 통해 강판의 내식성을 화보할 수 있으며, 외부오염을 방지할 수 있다. 상기 도막층 형성에 필요한 도료의 종류는 특별히 한정하지는 않으나, 본 발명에서는 투명 클리어 도료, 반투명 클리어 도료 또는 유색 도료를 사용하는 것이 바람직하다.
After the etching process may further include a coating layer forming process, through the coating layer forming process can be pictorial corrosion resistance of the steel sheet, it is possible to prevent external contamination. The kind of paint required for forming the coating layer is not particularly limited, but in the present invention, it is preferable to use a transparent clear paint, a translucent clear paint or a colored paint.
이하, 실시예를 통해 본 발명에 대해 상세히 설명한다. 다만, 하기 실시예는 본 발명을 보다 상세히 설명하기 위한 것일 뿐 본 발명의 권리범위를 한정하지는 않는다.
Hereinafter, the present invention will be described in detail with reference to Examples. However, the following examples are only intended to describe the present invention in more detail, and do not limit the scope of the present invention.
(실시예)(Example)
강판의 두께가 0.9mm인 저탄소 냉연강판에 번호수가 다른 벨트 샌드를 이용하여 헤어라인 무늬를 형성하였다. 이 때, 벨트속도는 4m/초, 연마시간은 3~4초였다. 상기 헤어라인이 형성된 강판에 Zn-Ni합금을 전기도금하였으며, 이 때 Ni의 함량과 도금시간을 조절하여 도금층의 경도와 도금량을 하기 표 1과 같이 다르게 하였다. 또한 에칭용액으로 황산을 이용하여 pH가 다른 용액을 만들어 에칭을 행하였다. 내식성은 JIS 규격을 만족하는 SST(염수분무실험)로 수행하였으며, 경도는 비커스 경도기로 측정하였다. 밀착성은 도금된 강판을 60도로 벤딩(bending) 후 테이프(tape)에 묻어나는 도금 입자로 평가하였다. 도금층의 헤어라인 형태의 평가는 헤어라인 형성 후 강판과 상기 헤어라인이 형성된 강판을 도금한 후의 헤어라인을 비교하여, 직선라인이 1cm2의 면적에서 라인 수가 보이지 않거나 직선으로 나타나지 않는 분율로 나타내었으며, 광택도는 반사각을 60도로 하여 광택기를 이용해 측정하였다. 상기 측정된 물성의 결과는 하기 표 1에 나타내었다.
A hairline pattern was formed on a low carbon cold rolled steel sheet having a thickness of 0.9 mm using a belt sand having a different number. At this time, the belt speed was 4 m / sec, and the polishing time was 3 to 4 seconds. Zn-Ni alloy was electroplated on the steel plate on which the hairline was formed, and the hardness and plating amount of the plating layer were changed as shown in Table 1 by adjusting the content of Ni and the plating time. In addition, sulfuric acid was used as an etching solution to produce a solution having a different pH, and etching was performed. Corrosion resistance was performed by SST (salt spray test) satisfying JIS standards, the hardness was measured by Vickers hardness tester. Adhesion was evaluated by plated steel sheets plated particles buried in a tape after bending at 60 degrees. Evaluation of the hair-line form of the coating layer, as compared to hair line after plating the hairline is formed after the steel sheet and the hairline is formed in the steel sheet, straight line showed a fraction that does not appear as a straight line or not the number of lines in an area of 1cm 2 , Glossiness was measured using a polisher with a reflection angle of 60 degrees. Results of the measured physical properties are shown in Table 1 below.
- 헤어라인 형상 감소분율 : 1cm2 면적에서 도금층에서 헤어라인 감소가 3%이하이면 ○, 3~5%이면 △, 5%를 초과하면 ×
- 광택도 : 도금된 헤어라인 광택도가 75이상이면 ○, 70~75이면 △, 70 미만이면 ×
- 밀착성 : 60도로 벤딩시 압축응력 및 인장응력을 받는 쪽 모두 도금층에 파우더링이 발생하지 않을 경우 양호, 발견될 경우 불량-Corrosion resistance evaluation: When the time when white blue or lamination appears in the plated layer during the SST evaluation is 3 hours or more, ○, 2 to 3 hours, △, less than 2 hours ×
-Hairline shape reduction rate: ○ If the hairline reduction in the plating layer is less than 3% in the area of 1cm 2 , △, 3 ~ 5%, △, 5%
-Glossiness: If plated hairline glossiness is 75 or more, ○, 70 ~ 75, △, less than 70 ×
-Adhesiveness: Good when both the compressive and tensile stresses are not bent in the plated layer when bending at 60 degrees, and poor when found
상기 표 1에서 알 수 있듯이, 본 발명에 부합되는 발명재 1 내지 6은 헤어라인의 형상이 감소되는 분율이 3%이하로, 우수한 헤어라인 외관을 갖는 강판이 제조되었음을 알 수 있고, 내식성, 광택도, 밀착성 모두 우수한 결과를 나타내고 있음을 알 수 있다.
As can be seen in Table 1, Inventive Materials 1 to 6 in accordance with the present invention has a fraction of less than 3% of the shape of the hairline is reduced, it can be seen that a steel sheet having an excellent hairline appearance was produced, corrosion resistance, gloss Also, it can be seen that the adhesiveness shows excellent results.
그러나, 비교재 1의 경우, 도금층의 경도가 낮아 헤어라인 형상이 상당량 감소되었음을 알 수 있고, 광택도와 밀착성 또한 불량하였다. 반대로, 도금층의 경도가 높은 비교재 2의 경우에는 밀착성이 감소되는 경향을 나타내었다.
However, in the case of Comparative Material 1, the hardness of the plating layer was low, it can be seen that the hairline shape was significantly reduced, the gloss and adhesion was also poor. On the contrary, in the case of Comparative Material 2 having a high hardness of the plating layer, the adhesion tended to decrease.
비교재 3의 경우에는 도금량이 부족하여 충분한 내식성을 확보하지 못하고 있음을 알 수 있고, 도금량이 많은 비교재 4의 경우, 헤어라인 형상의 감소 분율이 높아지고, 광택도 또한 낮아지는 결과를 나타내었다.
In the case of the comparative material 3, it was found that the plating amount was insufficient and sufficient corrosion resistance was not secured. In the case of the comparative material 4 having a large plating amount, the reduced fraction of the hairline shape was increased, and the glossiness was also lowered.
비교재 5의 경우, 에칭액의 산성도가 높아 충분한 광택도를 확보하지 못할 뿐만 아니라 헤어라인의 형상 또한 소폭 감소하었으며, 비교재 6의 경우, 산성도가 낮아 충분한 광택도를 확보하지 못하였다.In the case of Comparative Material 5, the acidity of the etching solution was not enough to secure sufficient glossiness, and the shape of the hairline was also slightly reduced. In the case of Comparative Material 6, the acidity was low and sufficient glossiness was not obtained.
Claims (11)
An electroplated steel sheet comprising at least one iron-based zinc alloy plating layer selected from the group consisting of Zn-Fe, Zn-Fe-Ni, and Zn-Fe-Co, wherein the hardness of the plating layer is 90 to 500 Hv.
The electroplating steel sheet having a hairline appearance according to claim 1, wherein the deposition amount of the plating layer is 1 to 40 g / m 2 .
The electroplated steel sheet having a hairline appearance according to claim 1, wherein the electroplated steel sheet has glossiness of 70 or more.
The electroplated steel sheet according to any one of claims 1 to 3, wherein the electroplated steel sheet is subjected to at least one post-treatment selected from the group consisting of phosphoric acid treatment, chromate treatment and chromium free treatment. Plated steel sheet.
The electroplated steel sheet of claim 4, wherein the electroplated steel sheet has a hairline appearance in which a coating layer including a transparent clear paint, a translucent clear paint, or a colored paint is formed on the plating layer.
상기 헤어라인 무늬가 형성된 강판에 90~500Hv의 경도를 갖는 Zn-Fe, Zn-Fe-Ni 및 Zn-Fe-Co로 이루어진 그룹으로부터 선택된 1종 이상의 철계 아연합금을 전기도금하여 도금층을 형성하는 도금층 형성 단계를 포함하는 헤어라인 외관을 갖는 전기도금강판의 제조방법.
A hairline forming step of forming a hairline pattern on the steel sheet; And
Plating layer to form a plating layer by electroplating at least one iron-based zinc alloy selected from the group consisting of Zn-Fe, Zn-Fe-Ni and Zn-Fe-Co having a hardness of 90 ~ 500Hv on the steel line patterned steel sheet Method for producing an electroplated steel sheet having a hairline appearance comprising the step of forming.
7. The method of claim 6, wherein the plating layer has an adhesion amount of 1 to 40 g / m 2 .
The method of claim 6, further comprising etching the acid solution having a pH of 1 to 6 after the plating layer forming step.
The method of claim 8, wherein the etching is performed for 0.1 to 30 seconds.
The electroplated steel sheet according to any one of claims 6 to 9, further comprising the step of performing at least one post-treatment selected from the group consisting of phosphoric acid treatment, chromate treatment and chromium free treatment. Manufacturing method.
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| KR101510555B1 (en) * | 2013-11-18 | 2015-04-09 | 주식회사 포스코 | Metal member having excellent image clarity |
| KR20160111572A (en) | 2015-03-16 | 2016-09-27 | 포스코강판 주식회사 | Manufacturing Apparatus of Coated Steel Sheet Having Hairline Pattern and Coated Steel Sheet Thereof |
| WO2018230716A1 (en) * | 2017-06-16 | 2018-12-20 | 新日鐵住金株式会社 | Plated steel material |
| JP2021046597A (en) * | 2019-09-20 | 2021-03-25 | 日本製鉄株式会社 | Plated steel sheet |
| JP2021046598A (en) * | 2019-09-20 | 2021-03-25 | 日本製鉄株式会社 | Plated steel sheet |
| EP3901332A4 (en) * | 2018-12-19 | 2022-01-26 | Posco | Electroplated steel sheet having excellent surface appearance, and manufacturing method therefor |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101510555B1 (en) * | 2013-11-18 | 2015-04-09 | 주식회사 포스코 | Metal member having excellent image clarity |
| KR20160111572A (en) | 2015-03-16 | 2016-09-27 | 포스코강판 주식회사 | Manufacturing Apparatus of Coated Steel Sheet Having Hairline Pattern and Coated Steel Sheet Thereof |
| WO2018230716A1 (en) * | 2017-06-16 | 2018-12-20 | 新日鐵住金株式会社 | Plated steel material |
| JP6447800B1 (en) * | 2017-06-16 | 2019-01-09 | 新日鐵住金株式会社 | Plated steel |
| US11078590B2 (en) | 2017-06-16 | 2021-08-03 | Nippon Steel Corporation | Plated steel |
| EP3901332A4 (en) * | 2018-12-19 | 2022-01-26 | Posco | Electroplated steel sheet having excellent surface appearance, and manufacturing method therefor |
| JP2021046597A (en) * | 2019-09-20 | 2021-03-25 | 日本製鉄株式会社 | Plated steel sheet |
| JP2021046598A (en) * | 2019-09-20 | 2021-03-25 | 日本製鉄株式会社 | Plated steel sheet |
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