KR20210036539A - Composition for enhancing surface property of aluminium sheet and method of enhancing using the same - Google Patents

Composition for enhancing surface property of aluminium sheet and method of enhancing using the same Download PDF

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KR20210036539A
KR20210036539A KR1020190118613A KR20190118613A KR20210036539A KR 20210036539 A KR20210036539 A KR 20210036539A KR 1020190118613 A KR1020190118613 A KR 1020190118613A KR 20190118613 A KR20190118613 A KR 20190118613A KR 20210036539 A KR20210036539 A KR 20210036539A
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aluminum plate
surface quality
composition
aluminum
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KR102264345B1 (en
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김건수
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현대제철 주식회사
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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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/10—Etching compositions
    • C23F1/14—Aqueous compositions
    • C23F1/16—Acidic compositions
    • C23F1/20—Acidic compositions for etching aluminium or alloys thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
    • B22D11/003—Aluminium alloys

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
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  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
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Abstract

The present invention provides a method for improving the surface quality of an aluminum plate. According to the present invention, the method for improving the surface quality of an aluminum plate comprises the steps of: forming an aluminum plate by an aluminum strip casting process; and chemical chamfering by immersing the aluminum plate in a composition consisting of 30 to 40 vol.% of hydrochloric acid, 6 to 10 vol.% of nitric acid, 5 to 10 vol.% of hydrofluoric acid, the remainder of water, and unavoidable impurities.

Description

알루미늄 판재의 표면 품질 개선 조성물 및 이를 이용한 개선 방법{COMPOSITION FOR ENHANCING SURFACE PROPERTY OF ALUMINIUM SHEET AND METHOD OF ENHANCING USING THE SAME} Surface quality improvement composition of aluminum plate and improvement method using the same {COMPOSITION FOR ENHANCING SURFACE PROPERTY OF ALUMINIUM SHEET AND METHOD OF ENHANCING USING THE SAME}

본 발명은 표면 품질 개선 조성물 및 이를 이용한 개선 방법에 관한 것으로서, 더욱 상세하게는, 알루미늄 판재의 표면 품질 개선 조성물 및 이를 이용한 개선 방법이다. The present invention relates to a composition for improving surface quality and an improvement method using the same, and more particularly, to a composition for improving surface quality of an aluminum plate and an improvement method using the same.

알루미늄 스트립 캐스팅 공정 특성상 용탕을 직접 압연하여 급랭시키기 때문에 응고무늬나 역편석과 같은 표면 주조 결함을 수반하며, 고합금계일수록 이러한 문제점이 두드러진다. 한편, 알루미늄 스트립 캐스팅 공정으로 주조된 판재는 두께가 약 3 내지 10mm 정도로 얇기 때문에 표면 결함 제거를 위한 종래의 물리적 면삭 공정을 적용하는 것이 용이하지 않다. Due to the characteristics of the aluminum strip casting process, since the molten metal is directly rolled and quenched, surface casting defects such as solidification patterns or reverse segregation are accompanied, and this problem becomes more prominent in the higher alloy system. On the other hand, since the plate material cast by the aluminum strip casting process is as thin as about 3 to 10 mm in thickness, it is not easy to apply the conventional physical chamfering process for removing surface defects.

관련 선행기술로는 한국등록특허 제1009481500000호(등록일:2010.03.10)가 있다.As a related prior art, there is Korean Patent Registration No. 1009481500000 (Registration Date: 2010.03.10).

본 발명이 해결하고자 하는 과제는 알루미늄 스트립 캐스팅 공정으로 주조된 판재의 표면 품질을 개선하는 조성물 및 상기 조성물을 이용한 알루미늄 스트립 캐스팅 공정으로 주조된 판재의 표면 품질의 개선 방법을 제공하는 것이다.The problem to be solved by the present invention is to provide a composition for improving the surface quality of a plate cast by an aluminum strip casting process, and a method for improving the surface quality of a plate cast by an aluminum strip casting process using the composition.

상기 목적을 달성하기 위한 본 발명의 일 실시예에 따른 알루미늄 판재의 표면 품질 개선 조성물은 염산: 30 ~ 40 vol.%, 질산: 6 ~ 10 vol.%, 불산: 5 ~ 10 vol.% 및 나머지가 물과 불가피한 불순물로 이루어진다. The composition for improving the surface quality of an aluminum plate according to an embodiment of the present invention for achieving the above object is hydrochloric acid: 30 to 40 vol.%, nitric acid: 6 to 10 vol.%, hydrofluoric acid: 5 to 10 vol.%, and the rest of the composition. Is made up of water and inevitable impurities.

상기 목적을 달성하기 위한 본 발명의 일 실시예에 따른 알루미늄 판재의 표면 품질 개선 방법은 알루미늄 스트립 캐스팅 공정으로 알루미늄 판재를 형성하는 단계; 상기 알루미늄 판재를 염산: 30 ~ 40 vol.%, 질산: 6 ~ 10 vol.%, 불산: 5 ~ 10 vol.% 및 나머지가 물과 불가피한 불순물로 이루어진 조성물에 침지함으로써 화학적 면삭하는 단계; 를 포함한다. A method for improving the surface quality of an aluminum plate according to an embodiment of the present invention for achieving the above object comprises: forming an aluminum plate by an aluminum strip casting process; Chemical cleaning by immersing the aluminum plate in a composition consisting of hydrochloric acid: 30 to 40 vol.%, nitric acid: 6 to 10 vol.%, hydrofluoric acid: 5 to 10 vol.%, and the remainder of water and inevitable impurities; Includes.

상기 알루미늄 판재의 표면 품질 개선 방법에서, 상기 화학적 면삭하는 단계는 상기 조성물을 25 내지 50℃의 온도로 유지하는 것을 특징으로 할 수 있다. In the method for improving the surface quality of the aluminum plate, the chemical shaping may be characterized in that the composition is maintained at a temperature of 25 to 50°C.

상기 알루미늄 판재의 표면 품질 개선 방법에서, 상기 화학적 면삭하는 단계는 상기 알루미늄 판재를 상기 조성물을 수용하는 수용부에 15 내지 60초 동안 침지함으로써 화학적 면삭하는 단계를 포함할 수 있다. In the method for improving the surface quality of the aluminum plate, the chemical chamfering may include chemical chamfering by immersing the aluminum plate in a receiving portion accommodating the composition for 15 to 60 seconds.

상기 알루미늄 판재의 표면 품질 개선 방법에서, 상기 화학적 면삭하는 단계는 상기 알루미늄 판재의 표면 응고 무늬의 편석부 내지 역편석 결함이 우선 부식되는 단계를 포함할 수 있다. In the method for improving the surface quality of the aluminum plate, the chemical chamfering may include a step of first corroding a segregation portion or a reverse segregation defect of the surface solidification pattern of the aluminum plate.

상기 알루미늄 판재의 표면 품질 개선 방법은, 상기 화학적 면삭하는 단계 후에 상기 알루미늄 판재를 압연하는 단계;를 더 포함할 수 있다. The method for improving the surface quality of the aluminum plate may further include rolling the aluminum plate after the chemical chamfering step.

본 발명의 실시예에 따르면, 알루미늄 스트립 캐스팅 공정으로 주조된 판재의 표면 품질을 효과적으로 개선하는 조성물 및 상기 조성물을 이용한 알루미늄 스트립 캐스팅 공정으로 주조된 판재의 표면 품질의 개선 방법을 구현할 수 있다. According to an embodiment of the present invention, a composition for effectively improving the surface quality of a plate cast by an aluminum strip casting process and a method for improving the surface quality of a plate cast by an aluminum strip casting process using the composition can be implemented.

도 1은 본 발명의 일 실시예에 따른 알루미늄 판재의 표면 품질 개선 방법을 도해하는 도면이다.
도 2는 본 발명의 일 실시예에 따른 알루미늄 판재의 표면 품질 개선 방법에서, 스트립 캐스팅 주조법으로 구현한 후 화학적 면삭을 수행하기 전의 알루미늄 판재의 표면 결함을 촬영한 사진이다.
도 3은 본 발명의 일 실시예에 따른 알루미늄 판재의 표면 품질 개선 방법에서, 적정 시간 동안 침지함으로써 화학적 면삭을 수행한 알루미늄 판재의 표면을 미침지부와 비교하여 촬영한 사진이다.
도 4는 본 발명의 일 실시예에 따른 알루미늄 판재의 표면 품질 개선 방법에서, 적정 시간을 초과하여 침지함으로써 화학적 면삭을 수행한 알루미늄 판재의 표면을 미침지부와 비교하여 촬영한 사진이다. 1 is a diagram illustrating a method of improving the surface quality of an aluminum plate according to an embodiment of the present invention.
FIG. 2 is a photograph of a surface defect of an aluminum plate before chemical chamfering after implementing a strip casting casting method in a method for improving the surface quality of an aluminum plate according to an embodiment of the present invention.
3 is a photograph taken by comparing the surface of an aluminum plate subjected to chemical chamfering by immersing for an appropriate time in a method of improving the surface quality of an aluminum plate according to an embodiment of the present invention compared to an unimmersed portion.
4 is a photograph taken by comparing the surface of an aluminum plate subjected to chemical chamfering by being immersed for more than an appropriate time in the method for improving the surface quality of an aluminum plate according to an exemplary embodiment of the present invention compared to a non-immersed portion.

이하에서는 본 발명의 일 실시예에 따른 알루미늄 판재의 표면 품질 개선 조성물 및 알루미늄 판재의 표면 품질 개선 방법을 상세하게 설명한다. 후술되는 용어들은 본 발명에서의 기능을 고려하여 적절하게 선택된 용어들로서, 이러한 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다. Hereinafter, a composition for improving surface quality of an aluminum plate and a method for improving surface quality of an aluminum plate according to an embodiment of the present invention will be described in detail. Terms to be described later are terms appropriately selected in consideration of functions in the present invention, and definitions of these terms should be made based on the contents throughout the present specification.

일반적으로, 알루미늄 스트립 캐스팅 공정 특성상 용탕을 직접 압연하여 급랭시키기 때문에 응고무늬나 역편석과 같은 표면 주조 결함을 수반하며, 고합금계일수록 이러한 문제점이 두드러진다. 한편, 알루미늄 스트립 캐스팅 공정으로 주조된 판재는 두께가 약 3 내지 10mm 정도로 얇기 때문에 표면 결함 제거를 위한 종래의 물리적 면삭 공정(예를 들어, 밴드쏘 타입 공정, 그라인더 타입 공정)을 적용하는 것이 용이하지 않다. In general, due to the characteristics of the aluminum strip casting process, since the molten metal is directly rolled and quenched, surface casting defects such as solidification patterns or reverse segregation are accompanied, and this problem becomes more pronounced in a high alloy system. On the other hand, since the plate material cast by the aluminum strip casting process is as thin as about 3 to 10 mm, it is not easy to apply a conventional physical chamfering process (for example, a band saw type process, a grinder type process) to remove surface defects. not.

본 발명에서는 특정 조성 범위를 가지는 조성물을 이용하여 알루미늄 판재의 표면 주조 결함을 부식시키는 화학적 면삭 공정을 도입하여 알루미늄 판재의 외관을 개선하고자 한다. In the present invention, by using a composition having a specific composition range, it is intended to improve the appearance of the aluminum plate by introducing a chemical chamfering process to corrode the surface casting defects of the aluminum plate.

알루미늄 판재의 표면 품질 개선 조성물Composition for improving surface quality of aluminum plate

본 발명의 일 실시예에 따른 알루미늄 판재의 표면 품질 개선 조성물은 염산: 30 ~ 40 vol.%, 질산: 6 ~ 10 vol.%, 불산: 5 ~ 10 vol.% 및 나머지가 물과 불가피한 불순물로 이루어진다. The composition for improving the surface quality of an aluminum plate according to an embodiment of the present invention includes hydrochloric acid: 30 to 40 vol.%, nitric acid: 6 to 10 vol.%, hydrofluoric acid: 5 to 10 vol.%, and the rest of water and inevitable impurities. Done.

상기 알루미늄 판재의 표면 품질 개선 조성물에서, 염산의 부피분율이 30 vol.% 미만인 경우, 질산의 부피분율이 6 vol.% 미만인 경우, 불산의 부피분율이 5 vol.% 미만인 경우, 알루미늄 판재의 표면 응고 무늬의 편석부 내지 역편석 결함이 우선 부식되는 효과가 나타나지 않는다. In the composition for improving the surface quality of the aluminum sheet, when the volume fraction of hydrochloric acid is less than 30 vol.%, the volume fraction of nitric acid is less than 6 vol.%, and the volume fraction of hydrofluoric acid is less than 5 vol.%, the surface of the aluminum sheet is surfaced. The segregation part of the solidified pattern or the reverse segregation defect does not show the effect of corrosion first.

상기 알루미늄 판재의 표면 품질 개선 조성물에서, 염산의 부피분율이 40 vol.% 초과하는 경우, 질산의 부피분율이 10 vol.% 초과하는 경우, 불산의 부피분율이 10 vol.% 초과하는 경우, 알루미늄 판재의 부식이 과도하게 진행되어 표면 미관이 오히려 열화되는 현상이 발생할 수 있다. In the composition for improving the surface quality of the aluminum sheet, when the volume fraction of hydrochloric acid exceeds 40 vol.%, the volume fraction of nitric acid exceeds 10 vol.%, and the volume fraction of hydrofluoric acid exceeds 10 vol.%, aluminum Due to excessive corrosion of the plate, the appearance of the surface may be rather deteriorated.

알루미늄 판재의 표면 품질 개선 방법How to improve the surface quality of aluminum plate

도 1은 본 발명의 일 실시예에 따른 알루미늄 판재의 표면 품질 개선 방법을 도해하는 도면이다. 1 is a diagram illustrating a method of improving the surface quality of an aluminum plate according to an embodiment of the present invention.

도 1을 참조하면, 본 발명의 일 실시예에 따른 알루미늄 판재의 표면 품질 개선 방법은 스트립 캐스터(200)에서 알루미늄 스트립 캐스팅 공정으로 알루미늄 판재(100)를 형성하는 단계(S100); 상기 알루미늄 판재(100)를 염산: 30 ~ 40 vol.%, 질산: 6 ~ 10 vol.%, 불산: 5 ~ 10 vol.% 및 나머지가 물과 불가피한 불순물로 이루어진 조성물(350)에 침지함으로써 화학적 면삭하는 단계(S200); 를 포함한다. Referring to FIG. 1, a method of improving the surface quality of an aluminum plate according to an embodiment of the present invention includes forming an aluminum plate 100 by an aluminum strip casting process in a strip caster 200 (S100); Chemically by immersing the aluminum plate 100 in a composition 350 consisting of hydrochloric acid: 30 to 40 vol.%, nitric acid: 6 to 10 vol.%, hydrofluoric acid: 5 to 10 vol.%, and water and inevitable impurities. Chamfering (S200); Includes.

화학적 면삭하는 단계(S200) 후에, 상기 주조로 구현된 합금을 균질화 열처리하는 단계; 상기 균질화 열처리된 합금을 열간 압연하는 단계; 상기 열간 압연된 합금을 냉간 압연하는 단계; 상기 냉간 압연된 합금을 재결정 열처리하는 단계;를 더 포함할 수 있다. After the chemical chamfering step (S200), homogenizing heat treatment of the alloy implemented by the casting; Hot rolling the homogenized heat-treated alloy; Cold rolling the hot-rolled alloy; It may further include a step of recrystallization heat treatment of the cold-rolled alloy.

알루미늄 판재(100)는 스트립 캐스터(200)에서 압연기(400) 방향으로 이송되되, 이송되는 소정의 구간에서 알루미늄 판재의 표면 품질 개선 조성물(350)에 소정의 시간 동안 침지되어 화학적 면삭이 수행된다. 알루미늄 판재(100)가 이송되는 적절한 경로를 구현하기 위하여 복수의 롤(310)을 배치할 수 있다. 알루미늄 판재의 표면 품질 개선 조성물(350)은 탱크조와 가은 수용부(320)에 수용될 수 있다. 수용부(320)와 압연기(400) 사이에 특수 용액 세척 장치가 제공되어 알루미늄 판재(100)로부터 조성물(350)을 제거할 수 있다. The aluminum plate 100 is transferred from the strip caster 200 to the rolling mill 400, and is immersed in the surface quality improvement composition 350 of the aluminum plate for a predetermined time in a predetermined section to be transferred to perform chemical chamfering. A plurality of rolls 310 may be disposed in order to implement an appropriate path through which the aluminum plate 100 is transported. The composition 350 for improving the surface quality of the aluminum plate may be accommodated in the tank tank and the thin receiving part 320. A special solution cleaning device is provided between the receiving part 320 and the rolling mill 400 to remove the composition 350 from the aluminum plate 100.

도 2는 본 발명의 일 실시예에 따른 알루미늄 판재의 표면 품질 개선 방법에서, 스트립 캐스팅 주조법으로 구현한 후 화학적 면삭을 수행하기 전의 알루미늄 판재의 표면 결함을 촬영한 사진이다.FIG. 2 is a photograph of a surface defect of an aluminum plate before chemical chamfering after implementing a strip casting casting method in a method for improving the surface quality of an aluminum plate according to an embodiment of the present invention.

도 1 및 도 2를 참조하면, 스트립 캐스터(200)로부터 형성된 알루미늄 판재(100)는 용탕을 직접 압연하여 급랭시키기 때문에 표면 응고 무늬의 편석부 내지 역편석 결함을 가진다. 1 and 2, the aluminum plate 100 formed from the strip caster 200 has a segregation portion of a surface solidification pattern or a reverse segregation defect because the molten metal is directly rolled and rapidly cooled.

본 발명의 알루미늄 판재의 표면 품질 개선 방법에 의하면, 표면 응고 무늬의 편석부 내지 역편석 결함을 부식하여 표면 외관을 개선하기 위하여 물리적 면삭이 아니라 화학적 면삭을 수행한다. According to the method for improving the surface quality of an aluminum plate of the present invention, chemical chamfering is performed instead of physical chamfering in order to improve the surface appearance by corroding the segregation part or reverse segregation defect of the surface solidification pattern.

상기 알루미늄 판재의 표면 품질 개선 방법에서, 상기 화학적 면삭하는 단계(S200)는 상기 조성물(350)을 25 내지 50℃의 온도로 유지할 수 있다. 조성물(350)의 온도가 25℃ 미만인 경우 상술한 화학적 면삭 효과가 미미할 수 있으며, 조성물(350)의 온도가 50℃를 초과하는 경우 흄(hume)이 발생하여 조성물이 감소되는 문제가 발생할 수 있다. In the method of improving the surface quality of the aluminum plate, the chemical surface-cutting step (S200) may maintain the composition 350 at a temperature of 25 to 50°C. When the temperature of the composition 350 is less than 25° C., the above-described chemical chamfering effect may be insignificant, and when the temperature of the composition 350 exceeds 50° C., fume is generated and the composition may be reduced. .

한편, 스트립 캐스터(200)에서 수용부(320) 사이에 판재 냉각 장치가 제공되어 알루미늄 판재(100)와 조성물(350) 사이에 적정 표면 화학 반응을 유도할 수 있다. 또한, 알루미늄 판재(100)와 조성물(350) 간의 표면 화학 반응에 의한 발열에 대응하기 위하여 수용부(320)에 추가적으로 냉각 장치가 제공될 수 있다. Meanwhile, a plate cooling device is provided between the strip caster 200 and the receiving portion 320 to induce an appropriate surface chemical reaction between the aluminum plate 100 and the composition 350. In addition, a cooling device may be additionally provided to the receiving part 320 in order to cope with heat generation due to a surface chemical reaction between the aluminum plate 100 and the composition 350.

상기 알루미늄 판재의 표면 품질 개선 방법에서, 상기 화학적 면삭하는 단계(S200)는 상기 알루미늄 판재(100)를 상기 조성물(350)에 15 내지 60초 동안 침지함으로써 화학적 면삭하는 단계를 포함할 수 있다. 조성물(350) 침지 시간이 15초 미만인 경우 상술한 화학적 면삭 효과가 미미할 수 있으며, 조성물(350) 침지 시간이 60초를 초과하는 경우 표면 식각이 과도하게 진행되어 오히려 표면 외관이 열화되는 문제점이 발생할 수 있다. In the method for improving the surface quality of the aluminum plate, the chemical chamfering step (S200) may include chemical chamfering by immersing the aluminum plate 100 in the composition 350 for 15 to 60 seconds. When the immersion time of the composition 350 is less than 15 seconds, the above-described chemical chamfering effect may be insignificant, and when the immersion time of the composition 350 exceeds 60 seconds, the surface etching proceeds excessively, resulting in a problem that the surface appearance is rather deteriorated. I can.

도 3은 본 발명의 일 실시예에 따른 알루미늄 판재의 표면 품질 개선 방법에서, 적정 시간 동안 침지함으로써 화학적 면삭을 수행한 알루미늄 판재의 표면을 미침지부와 비교하여 촬영한 사진이다. 3 is a photograph taken by comparing the surface of an aluminum plate subjected to chemical chamfering by immersing for an appropriate time in a method for improving the surface quality of an aluminum plate according to an embodiment of the present invention, compared with an unimmersed portion.

도 3을 참조하면, 알루미늄 판재(100)의 조성물(350) 침지 시간이 15 내지 60초 범위를 만족하는 경우, 알루미늄 판재의 표면 결함이 제거됨을 미침지부와 비교하여 확인할 수 있다. Referring to FIG. 3, when the immersion time of the composition 350 of the aluminum plate 100 satisfies the range of 15 to 60 seconds, it can be confirmed that the surface defects of the aluminum plate are removed compared with the non-soaked portion.

도 4는 본 발명의 일 실시예에 따른 알루미늄 판재의 표면 품질 개선 방법에서, 적정 시간을 초과하여 침지함으로써 화학적 면삭을 수행한 알루미늄 판재의 표면을 미침지부와 비교하여 촬영한 사진이다.4 is a photograph taken by comparing the surface of an aluminum plate subjected to chemical chamfering by being immersed for more than an appropriate time in a method of improving the surface quality of an aluminum plate according to an embodiment of the present invention compared to a non-immersed portion.

도 4를 참조하면, 알루미늄 판재(100)의 조성물(350) 침지 시간이 60초를 초과하는 경우, 알루미늄 판재의 표면 결함이 제거되지만 표면 식각이 과도하게 진행되어 오히려 표면 외관이 열화되는 것을 미침지부와 비교하여 확인할 수 있다. Referring to FIG. 4, when the immersion time of the composition 350 of the aluminum plate 100 exceeds 60 seconds, the surface defects of the aluminum plate are removed, but the surface etching proceeds excessively and the surface appearance is rather deteriorated. It can be confirmed by comparing with.

지금까지 본 발명의 기술적 사상에 따른 알루미늄 판재의 표면 품질 개선 조성물 및 이를 이용한 알루미늄 판재의 표면 품질 개선 방법을 설명하였다. 스트립 캐스팅으로 제조된 알루미늄 주조 판재에 전형적으로 나타나는 표면 주조 결함을 제거하기 위해 화학적 스캘핑(Chemical scalping) 공정을 도입하였다. 이에 의하여, 스트립 캐스팅재의 최종 판재 표면 품질을 향상시킬 수 있으며, 더 나아가, 표면 품질 문제로 적용하지 못했던 제품에 대한 적용이 가능할 것으로 기대된다. So far, a composition for improving the surface quality of an aluminum plate according to the technical idea of the present invention and a method for improving the surface quality of an aluminum plate using the same have been described. A chemical scalping process was introduced to eliminate surface casting defects typical of aluminum cast plates produced by strip casting. Accordingly, it is possible to improve the final plate surface quality of the strip casting material, and furthermore, it is expected that it can be applied to products that have not been applied due to surface quality problems.

이상에서는 본 발명의 실시예를 중심으로 설명하였지만, 당업자의 수준에서 다양한 변경이나 변형을 가할 수 있다. 이러한 변경과 변형이 본 발명의 범위를 벗어나지 않는 한 본 발명에 속한다고 할 수 있다. 따라서 본 발명의 권리범위는 이하에 기재되는 청구범위에 의해 판단되어야 할 것이다.In the above, the embodiments of the present invention have been described mainly, but various changes or modifications may be made at the level of those skilled in the art. These changes and modifications can be said to belong to the present invention as long as they do not depart from the scope of the present invention. Therefore, the scope of the present invention should be determined by the claims set forth below.

100: 알루미늄 판재
200: 스트립 캐스터
350: 알루미늄 판재의 표면 품질 개선 조성물
400: 압연기100: aluminum plate
200: strip caster
350: composition for improving the surface quality of aluminum plate
400: rolling mill

Claims (7)

염산: 30 ~ 40 vol.%, 질산: 6 ~ 10 vol.%, 불산: 5 ~ 10 vol.% 및 나머지가 물과 불가피한 불순물로 이루어진,
알루미늄 판재의 표면 품질 개선 조성물.
Hydrochloric acid: 30 to 40 vol.%, nitric acid: 6 to 10 vol.%, hydrofluoric acid: 5 to 10 vol.%, and the remainder consisting of water and inevitable impurities,
Composition for improving the surface quality of aluminum plates.
 알루미늄 스트립 캐스팅 공정으로 알루미늄 판재를 형성하는 단계;
상기 알루미늄 판재를 염산: 30 ~ 40 vol.%, 질산: 6 ~ 10 vol.%, 불산: 5 ~ 10 vol.% 및 나머지가 물과 불가피한 불순물로 이루어진 조성물에 침지함으로써 화학적 면삭하는 단계; 를 포함하는,
알루미늄 판재의 표면 품질 개선 방법.
Forming an aluminum plate by an aluminum strip casting process;
Chemical cleaning by immersing the aluminum plate in a composition consisting of hydrochloric acid: 30 to 40 vol.%, nitric acid: 6 to 10 vol.%, hydrofluoric acid: 5 to 10 vol.%, and the remainder of water and inevitable impurities; Containing,
How to improve the surface quality of aluminum plates.
 제 2 항에 있어서,
상기 화학적 면삭하는 단계에서 상기 조성물은 25 내지 50℃의 온도를 유지하는 것을 특징으로 하는,
알루미늄 판재의 표면 품질 개선 방법.
The method of claim 2,
In the step of chemical chamfering, the composition is characterized in that maintaining a temperature of 25 to 50 ℃,
How to improve the surface quality of aluminum plates.
 제 2 항에 있어서,
상기 화학적 면삭하는 단계는 상기 알루미늄 판재를 상기 조성물을 수용하는 수용부에 15 내지 60초 동안 침지함으로써 화학적 면삭하는 단계를 포함하는,
알루미늄 판재의 표면 품질 개선 방법.
The method of claim 2,
The chemical chamfering step comprises the step of chemical chamfering by immersing the aluminum plate in a receiving portion containing the composition for 15 to 60 seconds,
How to improve the surface quality of aluminum plates.
 제 2 항에 있어서,
상기 화학적 면삭하는 단계는 상기 알루미늄 판재의 표면 응고 무늬의 편석부 내지 역편석 결함이 우선 부식되는 단계를 포함하는,
알루미늄 판재의 표면 품질 개선 방법.
The method of claim 2,
The chemical chamfering step includes the step of first corroding the segregation part or reverse segregation defect of the surface solidification pattern of the aluminum plate,
How to improve the surface quality of aluminum plates.
 제 2 항에 있어서,
상기 화학적 면삭하는 단계 후에 상기 알루미늄 판재를 압연하는 단계;를 더 포함하는,
알루미늄 판재의 표면 품질 개선 방법.
The method of claim 2,
Further comprising the step of rolling the aluminum plate after the chemical chamfering step,
How to improve the surface quality of aluminum plates.
 제 2 항에 있어서,
상기 알루미늄 판재는 두께가 3 내지 10mm인 것을 특징으로 하는,
알루미늄 판재의 표면 품질 개선 방법.

The method of claim 2,
The aluminum plate is characterized in that the thickness is 3 to 10mm,
How to improve the surface quality of aluminum plates.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102605792B1 (en) * 2022-08-25 2023-11-29 (주)알루텍 manufacturing method of aluminium 5052 plates

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100854202B1 (en) * 2000-09-20 2008-08-26 니치콘 가부시키가이샤 Aluminum material for electrode of electrolytic capacitor and method for producing aluminum foil for electrode of electrolytic capacitor, and electrolytic capacitor
KR101122698B1 (en) * 2009-05-25 2012-03-09 한국기계연구원 Etchant composition of nickle-based superalloy and method of etching the alloy
KR20120056458A (en) * 2010-11-25 2012-06-04 주식회사 포스코 Annealing and pickling method of duplex stainless steel and duplex stainless steel manufactured using the same
KR20150103537A (en) * 2014-03-03 2015-09-11 덕산하이메탈(주) Negative active material for rechargeable lithium battery, method of preparing the same, and rechargeable lithium battery including the same
US20160102012A1 (en) * 2013-06-07 2016-04-14 Commissariat à l'énergie atomique et aux énergies alternatives Method for treating a surface and device implemented

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100854202B1 (en) * 2000-09-20 2008-08-26 니치콘 가부시키가이샤 Aluminum material for electrode of electrolytic capacitor and method for producing aluminum foil for electrode of electrolytic capacitor, and electrolytic capacitor
KR101122698B1 (en) * 2009-05-25 2012-03-09 한국기계연구원 Etchant composition of nickle-based superalloy and method of etching the alloy
KR20120056458A (en) * 2010-11-25 2012-06-04 주식회사 포스코 Annealing and pickling method of duplex stainless steel and duplex stainless steel manufactured using the same
US20160102012A1 (en) * 2013-06-07 2016-04-14 Commissariat à l'énergie atomique et aux énergies alternatives Method for treating a surface and device implemented
KR20150103537A (en) * 2014-03-03 2015-09-11 덕산하이메탈(주) Negative active material for rechargeable lithium battery, method of preparing the same, and rechargeable lithium battery including the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102605792B1 (en) * 2022-08-25 2023-11-29 (주)알루텍 manufacturing method of aluminium 5052 plates

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