KR101597450B1 - Electro-galvanized steel sheet and method of manufacturing the same - Google Patents
Electro-galvanized steel sheet and method of manufacturing the same Download PDFInfo
- Publication number
- KR101597450B1 KR101597450B1 KR1020140112051A KR20140112051A KR101597450B1 KR 101597450 B1 KR101597450 B1 KR 101597450B1 KR 1020140112051 A KR1020140112051 A KR 1020140112051A KR 20140112051 A KR20140112051 A KR 20140112051A KR 101597450 B1 KR101597450 B1 KR 101597450B1
- Authority
- KR
- South Korea
- Prior art keywords
- steel sheet
- solid content
- galvanized steel
- electro
- lubricant
- Prior art date
Links
Images
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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
- C23C22/12—Orthophosphates containing zinc cations
- C23C22/13—Orthophosphates containing zinc cations containing also nitrate or nitrite anions
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
본 발명은 전기아연도금강판(EG 강판) 제조 기술에 관한 것으로, 보다 상세하게는 윤활처리제의 반응성을 지건형으로 조절함으로써 강판 표면에 부착되는 윤활처리제의 레벨링성 확보 및 윤활처리제가 롤에 묻어 고형화되는 것을 방지할 수 있는 전기아연도금강판 및 그 제조 방법에 관한 것이다.
More particularly, the present invention relates to a technique for manufacturing an electrogalvanized steel sheet (EG steel sheet), more particularly, to a method of manufacturing a galvanized steel sheet (EG steel sheet) And a method of manufacturing the same.
아연도금강판은 도금 방식에 따라 용융아연도금강판 (GI 강판), 합금화용융아연도금강판(GA 강판) 및 전기아연도금강판(EG 강판)으로 구분된다.Galvanized steel sheets are classified into hot-dip galvanized steel sheets (GI steel sheets), galvanized hot-dip galvanized steel sheets (GA steel sheets), and galvanized steel sheets (EG steel sheets) according to the plating method.
이 중, 전기아연도금강판은 전기 도금을 통하여 아연도금층이 형성된 강판으로, 자동차 외판용으로 주로 사용된다. Of these, the galvanized steel sheet is a steel sheet formed by electroplating through a galvanized layer, and is mainly used for automotive shell plating.
전기아연도금강판의 경우, 일반적으로 강판 표면에 윤활피막이 형성된다. 윤활피막은 강판의 내식성을 향상시키고, 강판 표면에 오염물질이 부착되는 것을 방지하며, 특히 강판 표면에 윤활성을 부여하여 성형성을 향상시키는 역할을 한다. In the case of an electrogalvanized steel sheet, an lubricating film is generally formed on the surface of the steel sheet. The lubricating coating improves the corrosion resistance of the steel sheet, prevents the contaminants from adhering to the surface of the steel sheet, and particularly enhances the formability by imparting lubricity to the surface of the steel sheet.
윤활피막이 형성된 전기아연 도금강판은 강판표면에 윤활처리제를 코팅한 후 유도가열로(인덕션 히터)를 이용하여 강판을 가열하여 상기 윤활처리제를 건조 및 경화시킴으로써 제조된다.
An electro-galvanized steel sheet having a lubricated coating is produced by coating a lubricant on the surface of a steel sheet and then heating the steel sheet using an induction heater (induction heater) to dry and cure the lubricant.
본 발명의 배경기술로는 대한민국 등록특허공보 제10-0785989호(2007.12.14. 공고)에 개시되어 있는 고성형성을 부여한 무기인산염계 윤활처리 합금화용융아연도금강판 및 그 제조방법이 있다.
Background Art [0002] The background art of the present invention is an inorganic phosphate-based lubrication-treated hot-dip galvanized steel sheet which is provided with high-formed formation and which is disclosed in Korean Patent Registration No. 10-0785989 (published on Dec. 14, 2007) and a method for producing the same.
본 발명의 하나의 목적은 지건형 윤활처리제가 도포되어 표면 품질이 우수한 전기아연도금강판을 제공하는 것이다.It is an object of the present invention to provide an electrogalvanized steel sheet coated with a paper type lubricant and having excellent surface quality.
본 발명이 다른 목적은 지건형 윤활처리제를 이용하여 전기아연도금강판을 제조하는 방법을 제공하는 것이다.
Another object of the present invention is to provide a method of manufacturing an electrogalvanized steel sheet using a paper type lubricant.
상기 하나의 목적을 달성하기 위한 본 발명의 실시예에 따른 전기아연도금강판은 전기아연도금층이 형성된 모재 표면에, 용제와, 인산 및 금속화합물을 포함하는 고형분을 포함하고, 점도가 50~100cP이고, 상기 고형분 전체 함량이 3.0±0.1중량%인 윤활처리제가 표면에 도포 및 건조되어 있는 것을 특징으로 한다. According to an embodiment of the present invention, there is provided an electrogalvanized steel sheet comprising a base material on which an electrogalvanized layer is formed, a solvent, and a solid content including phosphoric acid and a metal compound, the base having a viscosity of 50 to 100 cP , And a lubricating agent having a total solid content of 3.0 +/- 0.1 wt% is coated on the surface and dried.
이때, 상기 윤활처리제는 유리산도(FA)가 0.2~0.4인 것이 바람직하다. At this time, the lubrication treating agent preferably has a free acidity (FA) of 0.2 to 0.4.
또한, 상기 고형분은 인산 100중량부에 대하여, 산화아연 20~40중량부, 질산니켈 15~25중량부를 포함할 수 있다.
The solid content may include 20 to 40 parts by weight of zinc oxide and 15 to 25 parts by weight of nickel nitrate, based on 100 parts by weight of phosphoric acid.
상기 다른 목적을 달성하기 위한 본 발명의 실시예에 따른 전기아연도금강판 제조 방법은 (a) 전기아연도금강판 상에 용제와, 인산 및 금속화합물을 포함하는 고형분을 포함하고, 점도가 50~100cP이고, 상기 고형분 전체 함량이 3.0±0.1중량%인 윤활처리제를 도포하는 단계; 및 (b) 상기 윤활처리제를 건조하여 피막을 형성하는 단계;를 포함하는 것을 특징으로 한다. According to another aspect of the present invention, there is provided an electro-galvanized steel sheet manufacturing method comprising the steps of: (a) providing a zinc-plated steel sheet with a solvent and a solid content including phosphoric acid and a metal compound and having a viscosity of 50 to 100 cP , And applying a lubricating agent having a total solid content of 3.0 +/- 0.1 wt%; And (b) drying the lubricant to form a coating.
이때, 상기 (a) 단계에서 상기 윤활처리제의 도포량을 100~200 mg/m2로 조절하는 것이 바람직하다. At this time, it is preferable to adjust the application amount of the lubricant in the step (a) to 100 to 200 mg / m 2 .
또한, 상기 윤활처리제는 유리산도(FA)가 0.2~0.4인 것이 바람직하다.
The lubrication treating agent preferably has a free acidity (FA) of 0.2 to 0.4.
도 1은 본 발명의 실시예에 따른 윤활피막이 형성된 전기아연도금강판을 개략적으로 나타낸 것이다.
도 2는 본 발명의 실시예에 따른 전기아연도금강판의 윤활피막 형성 방법을 개략적으로 나타낸 것이다.
도 3은 시편 1의 외관을 나타낸 것이다.
도 4는 시편 4의 외관을 나타낸 것이다.
1 is a schematic view of an electro-galvanized steel sheet on which an lubricant coating is formed according to an embodiment of the present invention.
2 schematically shows a method of forming an lubricating film of an electrogalvanized steel sheet according to an embodiment of the present invention.
Fig. 3 shows the appearance of the test piece 1. Fig.
Fig. 4 shows the appearance of the test piece 4. Fig.
본 발명의 이점 및 특징, 그리고 그것들을 달성하는 방법은 첨부되는 도면과 함께 상세하게 후술되어 있는 실시예들을 참조하면 명확해질 것이다. 그러나, 본 발명은 이하에서 개시되는 실시예들에 한정되는 것이 아니라 서로 다른 다양한 형태로 구현될 것이며, 단지 본 실시예들은 본 발명의 개시가 완전하도록 하며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 발명의 범주를 완전하게 알려주기 위해 제공되는 것이며, 본 발명은 청구항의 범주에 의해 정의될 뿐이다. 명세서 전체에 걸쳐 동일 참조 부호는 동일 구성요소를 지칭한다.BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but is capable of many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.
이하 첨부된 도면을 참조하여 본 발명에 따른 전기아연도금강판 및 그 제조 방법에 관하여 상세히 설명하기로 한다.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an electrogalvanized steel sheet and a method of manufacturing the same according to the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 발명의 실시예에 따른 윤활피막이 형성된 전기아연도금강판을 개략적으로 나타낸 것이다. 1 is a schematic view of an electro-galvanized steel sheet on which an lubricant coating is formed according to an embodiment of the present invention.
본 발명에서, 윤활피막(120)이 형성되는 모재는 강판(열연강판 혹은 냉연강판)(111) 표면에 전기아연도금층(EG층)(112)이 형성된 전기아연도금강판이다. 전기아연도금강판의 경우, 아연도금층의 균일도 및 평활도가 높아 성형후 도장성 및 내식성이 우수한 장점이 있다. In the present invention, the base material on which the
한편, 핫 프레싱 등 가공 공정에서 금형과의 마찰력을 줄이고, 또한 표면 흑화 현상을 방지하기 위해, 전기아연도금강판 표면에 윤활피막이 형성되어 있다. 윤활피막은 윤활처리제의 도포 및 건조를 통하여 형성된다. On the other hand, an lubricating film is formed on the surface of an electrogalvanized steel sheet in order to reduce the frictional force with the mold in the processing step such as hot pressing and also to prevent surface blackening phenomenon. The lubricating coating is formed through application and drying of the lubricating agent.
통상의 윤활처리제는 점도가 낮은 관계로 주로 속건(速乾)형으로, 롤코팅된 용액이 가열로에 들어가기 전에 건조되므로, 용액이 강판표면에서 레벨링(평활화)되는 시간이 부족하여 롤목 발생을 유발할 수 있다. 롤목은 롤코팅시 롤표면 무늬가 강판에 전사되어 압연방향으로 발생하는 무늬를 의미한다. Since the conventional lubricant has a low viscosity, it is usually a quick-drying type, and since the roll coated solution is dried before entering the heating furnace, the time for leveling (smoothening) the solution on the surface of the steel sheet is insufficient, . Rolled wood refers to a pattern which is transferred to a steel sheet during roll coating and is generated in the rolling direction.
또한 통상의 윤활처리제는 속건형이므로 작업 시간에 흐름에 따라 롤에 용액이 고착되는 문제점이 있어서, 작업자가 롤 표면을 닦아내야 하는 문제점이 있다.
In addition, since the conventional lubricant is a fast drying type, there is a problem that the solution adheres to the roll according to the operation time, and the operator has to wipe the roll surface.
본 발명에서는 윤활처리제의 점도를 조절하여 지건형으로 한 결과, 강판 표면의 롤목이 발생하는 현상을 해결할 수 있었으며, 아울러, 윤활처리제의 고형분 함량을 조절한 결과, 윤활처리제가 롤에 묻어 고형화되는 점을 방지할 수 있었다. In the present invention, the viscosity of the lubricant is adjusted to make it a ground type. As a result, the occurrence of roll neck on the surface of the steel sheet can be solved. Further, as a result of controlling the solid content of the lubricant, .
즉, 본 발명에 적용되는 윤활처리제는 점도가 50~100cP이다. 이는 종래의 대략 20cP 이하인 것에 대비하면 2배 이상 높은 점도에 해당한다. 이러한 점도 상승은 건조시간을 길게 할 수 있으므로, 피막의 평활도 향상에 유리하다.That is, the lubricant used in the present invention has a viscosity of 50 to 100 cP. This corresponds to a viscosity that is more than two times higher than that of the prior art of less than about 20 cP. Such an increase in viscosity can prolong the drying time, which is advantageous for improving the smoothness of the coating film.
아울러, 본 발명에 적용되는 윤활처리제는 고형분이 3.0±0.1중량%이다. 이는 점도상승에 따른 부착량도 동반 상승함으로써 롤에 윤활처리제가 묻어 고착화되는 것을 방지하기 위한 것이다. In addition, the lubricant of the present invention has a solid content of 3.0 ± 0.1 wt%. This is to prevent the adhesion of the lubricant to the roll due to the increase in the adhesion amount due to the increase in viscosity.
즉, 본 발명에 따른 전기아연도금강판은 전기아연도금층이 형성된 모재 표면에, 용제와, 인산 및 금속화합물을 포함하는 고형분을 포함하고, 점도가 50~100cP이고, 상기 고형분 전체 함량이 3.0±0.1중량%인 윤활처리제가 표면에 도포 및 건조되어 형성된다. That is, the electro-galvanized steel sheet according to the present invention is characterized in that the surface of the base material on which the electro-galvanized layer is formed contains a solvent and a solid content including phosphoric acid and a metal compound and has a viscosity of 50 to 100 cP and a total content of the solid content of 3.0 ± 0.1 % ≪ / RTI > by weight of a lubricant is applied and dried on the surface.
피막처리제에서, 고형분의 함량이 2.9중량% 미만일 경우, 윤활피막의 밀도가 너무 낮은 관계로 윤활성을 충분히 발휘하기 어렵다. 반대로, 고형분의 함량이 3.1중량%를 초과하는 경우, 롤에 고형분이 고착화되는 문제점이 발생할 수 있다. In the coating agent, when the content of the solid content is less than 2.9% by weight, the lubricating film is too dense to have a sufficient lubricating performance. On the other hand, when the content of the solid content exceeds 3.1% by weight, there may arise a problem that the solid content is fixed to the roll.
이때, 윤활처리제는 유리산도(Free Acidity; FA)가 0.2~0.4인 것이 바람직하다. 유리산도는 피막처리제에서 고형분 함량 조절, 고형분을 구성하는 성분들의 함량 조절을 통하여 조절될 수 있다. 유리산도가 0.4를 초과하는 경우, 반응속도가 높아지고 이로 인해 윤활피막의 균일성이 저하될 수 있다. 반대로, 유리산도가 0.2미만일 경우, 윤활피막의 내식성 및 윤활성 확보가 어려운 문제점이 있다. At this time, it is preferable that the lubrication treating agent has a free acidity (FA) of 0.2 to 0.4. The free acidity can be controlled by controlling the content of solids in the coating agent and controlling the content of the constituents of the solid. If the free acidity is more than 0.4, the reaction rate is increased and the uniformity of the lubricating coating may be lowered. On the other hand, when the free acidity is less than 0.2, there is a problem that it is difficult to secure the corrosion resistance and lubricity of the lubricating coating.
한편, 고형분은 인산 100중량부에 대하여, 산화아연 20~40중량부, 질산니켈 15~25중량부를 포함할 수 있다. 인산이 윤활성을 향상시키는 주요 인자라고 하면, 산화아연 및 질산니켈은 내식성, 피막 경도 등을 향상시키는 주요 인자라 할 수 있다. 인산 100 중량부 대비 산화아연 20중량부 미만 또는 질산니켈 15중량부 미만일 경우, 충분한 내식성 확보가 어려운 문제점이 있다. 반대로, 인산 100 중량부 대비 산화아연 40중량부 초과 또는 질산니켈 25중량부 초과일 경우, 불균일한 사이즈의 금속염을 형성함으로써 피막 균일성이 저하되는 문제점이 있다.On the other hand, the solid content may include 20 to 40 parts by weight of zinc oxide and 15 to 25 parts by weight of nickel nitrate, based on 100 parts by weight of phosphoric acid. When phosphoric acid is a main factor for improving lubricity, zinc oxide and nickel nitrate are major factors for improving corrosion resistance, film hardness and the like. When zinc oxide is less than 20 parts by weight or nickel nitrate is less than 15 parts by weight based on 100 parts by weight of phosphoric acid, it is difficult to ensure sufficient corrosion resistance. On the other hand, when zinc oxide is more than 40 parts by weight or nickel nitrate is more than 25 parts by weight based on 100 parts by weight of phosphoric acid, uniformity of film uniformity is lowered by forming a metal salt of uneven size.
고형분 외 나머지는 용제가 될 수 있고, 필요에 따라서는 소포제, 평활제 등 첨가제가 대략 1중량% 이하의 소량으로 포함될 수 있다.
The balance other than the solid content may be a solvent, and if necessary, an additive such as a defoaming agent and a smoothing agent may be contained in a small amount of about 1% by weight or less.
도 2는 본 발명의 실시예에 따른 전기아연도금강판의 윤활피막 형성 방법을 개략적으로 나타낸 것이다. 2 schematically shows a method of forming an lubricating film of an electrogalvanized steel sheet according to an embodiment of the present invention.
도 2를 참조하면, 본 발명에 따른 전기아연도금강판의 윤활피막 형성 방법은 윤활처리제 도포 단계(S210) 및 건조 단계(S220)를 포함한다.Referring to FIG. 2, a method of forming an lubricating film of an electro-galvanized steel sheet according to the present invention includes a lubricating agent applying step (S210) and a drying step (S220).
윤활처리제 도포 단계(S210)에서는 전기아연도금강판 상에 전술한 윤활처리제를 도포한다. In the lubrication treatment agent application step (S210), the aforementioned lubricant is applied onto the galvanized steel sheet.
이때, 윤활처리제의 도포량을 100~200 mg/m2로 조절하는 것이 바람직하다. 윤활처리제의 도포량이 100 mg/m2 미만일 경우, 윤활 특성 발휘가 어려워질 수 있다. 반대로 윤활처리제의 도포량이 200 mg/m2를 초과하는 경우, 탈지 공정 후에 금속염이 잔류하여 불균일한 피막을 형성하여 도장성을 저하시킬 수 있다. At this time, it is preferable to adjust the amount of the lubricant to be applied to 100 to 200 mg / m 2 . When the application amount of the lubricant is less than 100 mg / m 2 , it may become difficult to exhibit the lubrication characteristics. On the other hand, when the amount of the lubricant is more than 200 mg / m 2 , the metal salt may remain after the degreasing step to form a non-uniform coating film, which may reduce the paintability.
그리고, 건조 단계(S220)에서는 열풍 건조, 오븐 건조 등의 방식으로 윤활처리제를 대략 70~200℃ 정도에서 건조하여 피막을 형성한다.
In the drying step (S220), the lubricant is dried at about 70 to 200 DEG C by a method such as hot air drying or oven drying to form a film.
실시예Example
이하, 본 발명의 바람직한 실시예를 통해 본 발명의 구성 및 작용을 더욱 상세히 설명하기로 한다. 다만, 이는 본 발명의 바람직한 예시로 제시된 것이며 어떠한 의미로도 이에 의해 본 발명이 제한되는 것으로 해석될 수는 없다. Hereinafter, the configuration and operation of the present invention will be described in more detail with reference to preferred embodiments of the present invention. It is to be understood, however, that the same is by way of illustration and example only and is not to be construed in a limiting sense.
여기에 기재되지 않은 내용은 이 기술 분야에서 숙련된 자이면 충분히 기술적으로 유추할 수 있는 것이므로 그 설명을 생략하기로 한다.
The contents not described here are sufficiently technically inferior to those skilled in the art, and a description thereof will be omitted.
본 발명에서는 고형분에 인산 100중량부 대비 산화아연 33중량부 및 질산니켈 22중량부가 포함되고, 용제가 물(city water)인 윤활처리제를 이용하였다. In the present invention, a lubricating agent containing 33 parts by weight of zinc oxide and 22 parts by weight of nickel nitrate as a solid component and 100 parts by weight of phosphoric acid and having a solvent of city water was used.
표 1은 시편 1~4에 적용된 윤활처리제를 도포한 결과를 나타낸 것이다. Table 1 shows the results of application of the lubricant applied to Specimens 1 to 4.
또한, 도 3은 시편 1의 외관을 나타낸 것이고, 도 4는 시편 4의 외관을 나타낸 것이다. 3 shows the external appearance of the specimen 1, and Fig. 4 shows the external appearance of the specimen 4.
[표 1][Table 1]
표 1을 참조하면, 시편 1~4 모두 유사한 마찰계수를 나타내는 것을 볼 수 있다. 그러나, 본 발명에서 제시한 조건을 만족하는 윤활처리제가 적용된 시편 4의 경우 롤목이 발생하지 않은 반면(도 4), 점도가 상대적으로 낮은 시편 1~3의 경우 롤목이 발생(도 3)하였는 바, 표면 품질 측면에서 시편 4가 보다 바람직하다고 볼 수 있다. Referring to Table 1, it can be seen that the specimens 1 to 4 exhibit similar friction coefficients. However, in the case of the specimen 4 to which the lubricating agent satisfying the conditions of the present invention was applied, the roll neck was not generated (FIG. 4), while in the case of the specimens 1 to 3 having a relatively low viscosity, , And specimen 4 is more preferable in terms of surface quality.
이상에서는 본 발명의 실시예를 중심으로 설명하였으나, 이는 예시적인 것에 불과하며, 당해 기술이 속하는 분야에서 통상의 지식을 가진 기술자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다. While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
따라서, 본 발명의 진정한 기술적 보호범위는 아래의 특허청구범위에 의해서 정하여져야 할 것이다.
Accordingly, the true scope of protection of the present invention should be defined by the following claims.
110 : 전기아연도금강판
111 : 강판
112 : 전기아연도금층110: Electric galvanized steel sheet
111: steel plate
112: Electric galvanized layer
Claims (6)
상기 고형분은 인산 및 금속화합물을 포함하는 것을 특징으로 하는 전기아연도금강판.
A lubricant containing a solvent and a solid content and having a viscosity of 50 to 100 cP and a total solid content of 3.0 ± 0.1 wt% is applied and dried on the surface of the base material on which the electroplated zinc layer is formed,
Wherein the solid content comprises phosphoric acid and a metal compound.
상기 윤활처리제는 유리산도(FA)가 0.2~0.4인 것을 특징으로 하는 전기아연도금강판.
The method according to claim 1,
Wherein the lubrication treating agent has a free acidity (FA) of 0.2 to 0.4.
상기 고형분은 인산 100중량부에 대하여, 산화아연 20~40중량부, 질산니켈 15~25중량부를 포함하는 것을 특징으로 하는 전기아연도금강판.
3. The method according to claim 1 or 2,
Wherein the solid content comprises 20 to 40 parts by weight of zinc oxide and 15 to 25 parts by weight of nickel nitrate based on 100 parts by weight of phosphoric acid.
(b) 상기 윤활처리제를 건조하여 피막을 형성하는 단계;를 포함하는 것을 특징으로 하는 전기아연도금강판 제조 방법.
(a) a lubricating agent containing a solvent and a solid content on an electro-galvanized steel sheet and having a viscosity of 50 to 100 cP and a total solid content of 3.0 ± 0.1 wt%, wherein the solid content comprises phosphoric acid and a metal compound step; And
(b) drying the lubrication treating agent to form a coating film.
상기 (a) 단계에서 상기 윤활처리제의 도포량을 100~200 mg/m2로 조절하는 것을 특징으로 하는 전기아연도금강판 제조 방법.
5. The method of claim 4,
Wherein the coating amount of the lubricant is adjusted to 100 to 200 mg / m 2 in the step (a).
상기 윤활처리제는 유리산도(FA)가 0.2~0.4인 것을 특징으로 하는 전기아연도금강판 제조 방법.5. The method of claim 4,
Wherein the lubrication treating agent has a free acidity (FA) of 0.2 to 0.4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140112051A KR101597450B1 (en) | 2014-08-27 | 2014-08-27 | Electro-galvanized steel sheet and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140112051A KR101597450B1 (en) | 2014-08-27 | 2014-08-27 | Electro-galvanized steel sheet and method of manufacturing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR101597450B1 true KR101597450B1 (en) | 2016-02-24 |
Family
ID=55449924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020140112051A KR101597450B1 (en) | 2014-08-27 | 2014-08-27 | Electro-galvanized steel sheet and method of manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR101597450B1 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH062161A (en) * | 1992-06-15 | 1994-01-11 | Nkk Corp | Galvanized steel sheet excellent in formability, external appearance characteristic after forming, and corrosion resistance |
-
2014
- 2014-08-27 KR KR1020140112051A patent/KR101597450B1/en active IP Right Grant
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH062161A (en) * | 1992-06-15 | 1994-01-11 | Nkk Corp | Galvanized steel sheet excellent in formability, external appearance characteristic after forming, and corrosion resistance |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101720751B1 (en) | Flat steel product, method for producing a flat steel product, and method for producing a component | |
| CA2958500C (en) | Use of a sulphate, and method for producing a steel component by forming in a forming machine | |
| TWI485014B (en) | A method for manufacturing warm press materials | |
| JP6487474B2 (en) | Method for producing metal sheet with oiled Zn-Al-Mg coating and corresponding metal sheet | |
| JP2019518141A (en) | Solution composition for steel plate surface treatment, zinc-based plated steel plate surface-treated using the same, and method for producing the same | |
| KR20210007034A (en) | Method of producing parts with slight undulation from an electrogalvanized sheet, corresponding part and vehicle | |
| JP2022050635A (en) | Method of manufacturing hot-dip galvanized steel plate superior in press molding property and after-painting image clarity, and hot-dip galvanize steel plate manufactured thereby | |
| CN105063475A (en) | Alloying hot-dip galvanized steel with tensile strength being 390 MPa-level and used for automobile and production method | |
| KR101726095B1 (en) | Chromium-free coating composition, producing method of chromium-free coating steel sheet using the same and chromium-free coating steel sheet produced thereby | |
| KR101597450B1 (en) | Electro-galvanized steel sheet and method of manufacturing the same | |
| KR101562127B1 (en) | Lubrication treatment material for electro-galvanized steel sheet and method of forming lubrication coating film for electro-galvanized steel sheet using the same | |
| TW201910537A (en) | High-strength lubricating galvanized steel sheet and method of manufacturing the same wherein the steel sheet is provided with a uniform appearance and an excellent corrosion resistance | |
| KR20100076529A (en) | Composition for metal surface treatment and method for preparing thereof | |
| JP7380964B1 (en) | Coated steel plate and its manufacturing method | |
| KR101665800B1 (en) | Coating composition for cold-rolled steel sheet having high strength and cold-rolled steel sheet coated with the composition | |
| KR101657818B1 (en) | Black resin coating composition and black resin steel sheet | |
| KR100785989B1 (en) | Manufacturing method of lubricant inorganic pre-phosphates coated galvanized steel sheet having a high formability and the steel sheet thereof | |
| CN107488388A (en) | A kind of self-lubricating coating and self-lubricating hot-dip galvanizing sheet steel and its manufacture method for heat zinc coating plate | |
| JP6569618B2 (en) | Method for producing zinc phosphate treated steel sheet | |
| JP3903904B2 (en) | Surface-treated steel sheet with excellent paintability | |
| JP2952837B2 (en) | Corrosion resistant surface treated steel sheet with excellent deep drawing workability | |
| JP2013221177A (en) | Method for producing surface treated steel sheet | |
| KR20160111573A (en) | Manufacturing Method of Steel Sheet Coated by Water-soluble Nonferrous Metal and Steel Sheet Thereof | |
| CN110240834A (en) | Alloying hot dip galvanized sheet manufacturing method with good surface characteristic | |
| CN109158279A (en) | A method of improving household electrical appliances continuous hot galvanizing plate surface greasy property |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 20190123 Year of fee payment: 4 |
|
| FPAY | Annual fee payment |
Payment date: 20200120 Year of fee payment: 5 |