KR940014913A - Manufacturing method of galvanized steel sheet with excellent surface gloss - Google Patents
Manufacturing method of galvanized steel sheet with excellent surface gloss Download PDFInfo
- Publication number
- KR940014913A KR940014913A KR1019920026526A KR920026526A KR940014913A KR 940014913 A KR940014913 A KR 940014913A KR 1019920026526 A KR1019920026526 A KR 1019920026526A KR 920026526 A KR920026526 A KR 920026526A KR 940014913 A KR940014913 A KR 940014913A
- Authority
- KR
- South Korea
- Prior art keywords
- steel sheet
- galvanized steel
- manufacturing
- plating
- pickling
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/22—Collecting emitted gases
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
본 발명은, 연속전기아연도금강판의 표면광택성을 향싱시키는 방법에 관한 것으로서, 도금전 처리과정인 산세공정에 있어서, 염산농도를 20~25wt%로 하고, 산세시간을 3~24초로 하는 것을 특징으로 하는 아연도금강판제조방법을 제공하기 위한 것이다. 본 발명의 방법에 의하면, 도금전 강판의 최대조도가 7㎛이하가 되도록 하여, 도금과정에서의 강판의 오목한 부분과 볼록한 부분사이의 전류밀도차가 감소하게 되고, 결과적으로 원자밀도가 높은 아연의 기저면의 우선배향도가 8이상 균일하게 우선배향될 수 있어, 도금강판의 광택성이 현저히 향상되게 된다.The present invention relates to a method for enhancing the surface glossiness of a continuous galvanized steel sheet, wherein in the pickling process, which is a pre-plating treatment, the concentration of hydrochloric acid is set to 20 to 25 wt% and the pickling time is set to 3 to 24 seconds. It is to provide a galvanized steel sheet manufacturing method characterized in that. According to the method of the present invention, the maximum roughness of the steel sheet before plating is 7 µm or less, so that the current density difference between the concave and convex portions of the steel sheet during the plating process is reduced, and as a result, the base surface of zinc having a high atomic density The preferred orientation of can be uniformly preferentially arranged over 8, so that the glossiness of the plated steel sheet is remarkably improved.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제3도는 염산농도 및 산세시간을 변화시켜 산세한 후 염산계 도금욕에서 도금한 아연결정면들의 우선배향성을 나타낸 그래프.3 is a graph showing the preferential orientation of zinc crystal surfaces plated in a hydrochloric acid plating bath after pickling by varying the concentration of hydrochloric acid and the pickling time.
제4도는 15wt% 염산에서 15초동안 산세한 후 아연도금한 시편(가)과 25wt% 염산에서 15초동안 산세한 후 아연도금한 시편(나)의 확대조직사진.4 is an enlarged structure photograph of specimens (a) galvanized after pickling in 15 wt% hydrochloric acid for 15 seconds and galvanized after pickling in 25 wt% hydrochloric acid for 15 seconds.
제7도는 염산농도 및 산세시간을 변화시켜 산세한 후 에틸렌글리콜계 결정립 미세화제가 0.08ml/l첨가된 염산계 도금욕에서 도금한 후 도금층의 광택도를 측정한 그래프.7 is a graph measuring the glossiness of a plated layer after plating by changing the concentration of hydrochloric acid and pickling time, and then plating in a hydrochloric acid plating bath containing 0.08 ml / l of ethylene glycol-based grain refining agent.
제8도는 15wt% 염산에서 15초동안 산세한 후 에틸렌 글리콜계 결정립 미세화제가 첨가된 도금욕에서 아연도금한 시편(가)과 25wt% 염산에서 15초동안 산세한 후 에틸렌 글리콜계 결정립 미세화제가 첨가된 도금욕에서 아연도금한 시편(나)의 확대조직사진.FIG. 8 shows that the sample is pickled in 15 wt% hydrochloric acid for 15 seconds and galvanized in a plating bath to which ethylene glycol-based grain refiner is added. Enlarged photograph of specimens (b) galvanized in plating bath.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019920026526A KR950005352B1 (en) | 1992-12-30 | 1992-12-30 | Method for making a electro-zinc coating steel sheet with an excellent surface brightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019920026526A KR950005352B1 (en) | 1992-12-30 | 1992-12-30 | Method for making a electro-zinc coating steel sheet with an excellent surface brightness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR940014913A true KR940014913A (en) | 1994-07-19 |
| KR950005352B1 KR950005352B1 (en) | 1995-05-23 |
Family
ID=19347668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019920026526A KR950005352B1 (en) | 1992-12-30 | 1992-12-30 | Method for making a electro-zinc coating steel sheet with an excellent surface brightness |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR950005352B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100428019B1 (en) * | 2000-12-13 | 2004-04-30 | 현대하이스코 주식회사 | Manufacturing process of highly qualified, surface-treated zinc electroplated steel sheet |
-
1992
- 1992-12-30 KR KR1019920026526A patent/KR950005352B1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100428019B1 (en) * | 2000-12-13 | 2004-04-30 | 현대하이스코 주식회사 | Manufacturing process of highly qualified, surface-treated zinc electroplated steel sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| KR950005352B1 (en) | 1995-05-23 |
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