KR100448622B1 - 표면외관이 미려한 용융도금강판 제조방법 - Google Patents
표면외관이 미려한 용융도금강판 제조방법 Download PDFInfo
- Publication number
- KR100448622B1 KR100448622B1 KR10-1999-0062483A KR19990062483A KR100448622B1 KR 100448622 B1 KR100448622 B1 KR 100448622B1 KR 19990062483 A KR19990062483 A KR 19990062483A KR 100448622 B1 KR100448622 B1 KR 100448622B1
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- Prior art keywords
- steel sheet
- atmosphere
- hot
- gas
- dip galvanized
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 50
- 239000010959 steel Substances 0.000 claims abstract description 50
- 238000007747 plating Methods 0.000 claims abstract description 41
- 229910001335 Galvanized steel Inorganic materials 0.000 claims abstract description 33
- 239000008397 galvanized steel Substances 0.000 claims abstract description 33
- 229910052751 metal Inorganic materials 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 25
- 230000001590 oxidative effect Effects 0.000 claims abstract description 20
- 238000007711 solidification Methods 0.000 claims abstract description 14
- 230000008023 solidification Effects 0.000 claims abstract description 14
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 3
- 239000000956 alloy Substances 0.000 claims abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 59
- 239000007789 gas Substances 0.000 claims description 48
- 239000000203 mixture Substances 0.000 claims description 29
- 229910052757 nitrogen Inorganic materials 0.000 claims description 29
- 239000001257 hydrogen Substances 0.000 claims description 27
- 229910052739 hydrogen Inorganic materials 0.000 claims description 27
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 12
- 239000003595 mist Substances 0.000 claims description 11
- 239000000654 additive Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 150000002431 hydrogen Chemical class 0.000 claims description 5
- 150000002483 hydrogen compounds Chemical class 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims 2
- 239000007924 injection Substances 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 14
- 238000005275 alloying Methods 0.000 abstract description 2
- 239000011701 zinc Substances 0.000 description 22
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 20
- 229910052725 zinc Inorganic materials 0.000 description 20
- 230000000694 effects Effects 0.000 description 17
- 239000010410 layer Substances 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 10
- 239000007795 chemical reaction product Substances 0.000 description 8
- 230000001629 suppression Effects 0.000 description 8
- 230000007547 defect Effects 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 6
- 230000000996 additive effect Effects 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005246 galvanizing Methods 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 1
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 1
- DEXFNLNNUZKHNO-UHFFFAOYSA-N 6-[3-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperidin-1-yl]-3-oxopropyl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1CCN(CC1)C(CCC1=CC2=C(NC(O2)=O)C=C1)=O DEXFNLNNUZKHNO-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000001345 alkine derivatives Chemical class 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 210000004894 snout Anatomy 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical group [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 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
- C23C2/26—After-treatment
- C23C2/261—After-treatment in a gas atmosphere, e.g. inert or reducing atmosphere
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
- C23C2/18—Removing excess of molten coatings from elongated material
- C23C2/20—Strips; Plates
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
Abstract
Description
분위기박스 조성(%) | 표면외관 | ||||||
질소 | 수소 | 혼합기체 | 기타1 | 기타2 | 흐름무늬 | 구름무늬 | |
종래예1 | 78 | - | - | 22 | - | 1 | 1 |
비교예1 | 79 | - | - | 21 | - | 1 | 1 |
발명예1-1 | 80 | - | - | 20 | - | 1 | 2 |
발명예1-2 | 85 | - | - | 15 | - | 2 | 2 |
발명예1-3 | 90 | - | - | 10 | - | 2 | 3 |
발명예1-4 | 95 | - | - | 5 | - | 3 | 3 |
발명예1-5 | 99 | - | - | 1 | - | 5 | 4 |
비교예2 | - | 0.05 | - | 99.95 | - | 1 | 1 |
발명예2-1 | - | 0.1 | - | 99.9 | - | 1 | 2 |
발명예2-2 | - | 1.0 | - | 99.0 | - | 2 | 2 |
발명예2-2 | - | 5.0 | - | 95.0 | - | 2 | 3 |
발명예2-4 | - | 10.0 | - | 90.0 | - | 3 | 3 |
발명예2-5 | - | 20.0 | - | 80.0 | - | 4 | 4 |
발명예2-6 | - | 30.0 | - | 70.0 | - | 5 | 5 |
비교예3 | - | 40.0 | - | 60.0 | - | 5 | 5 |
비교예4 | - | - | 1.0 | 99.0 | - | 1 | 1 |
발명예3-1 | - | - | 2.0 | 98.0 | - | 1 | 2 |
발명예3-2 | - | - | 10.0 | 90.0 | - | 2 | 2 |
발명예3-3 | - | - | 25.0 | 75.0 | - | 2 | 2 |
발명예3-4 | - | - | 50.0 | 50.0 | - | 3 | 3 |
발명예3-5 | - | - | 75.0 | 25.0 | - | 3 | 3 |
발명예3-6 | - | - | 95.0 | 5.0 | - | 4 | 3 |
발명예4 | 80 | 20 | - | - | - | 5 | 5 |
발명예5 | 80 | - | 20 | - | - | 5 | 4 |
발명예6 | 80 | 10 | 10 | - | - | 5 | 5 |
발명예7 | 80 | 10 | - | 10 | - | 4 | 4 |
발명예8 | 80 | - | 10 | 10 | - | 3 | 3 |
발명예9 | 60 | 30 | 10 | - | - | 5 | 5 |
발명예10 | 70 | 25 | - | - | 5 | 3 | 3 |
발명예11 | 70 | 20 | - | - | 10 | 1 | 2 |
비교예5 | 70 | 15 | - | - | 15 | 1 | 1 |
기체조성(%) | 수분조성(%) | 표면외관 | 아연증기억제 | |||
질소 | 수소 | 수분 | 첨가제 | |||
종래예a | ≥98 | - | 2 | - | 1 | 2 |
발명예4 | 80 | 20 | - | - | 5 | 1 |
비교예a | 80 | 20 | 0.05 | - | 5 | 1 |
발명예a-1 | 80 | 20 | 0.1 | - | 5 | 2 |
발명예a-2 | 80 | 20 | 2 | - | 5 | 3 |
발명예a-3 | 80 | 20 | 10 | - | 5 | 3 |
발명예a-4 | 80 | 20 | 50 | - | 4 | 3 |
발명예a-5 | 80 | 20 | 90 | - | 4 | 3 |
발명예b-1 | 80 | 20 | 50 | 0.5 | 4 | 3 |
발명예b-2 | 80 | 20 | 50 | 5 | 2 | 3 |
발명예b-3 | 80 | 20 | 50 | 10 | 1 | 3 |
비교예b | 80 | 20 | 50 | 20 | 1 | 3 |
Claims (7)
- 비산화성 또는 환원성 분위기를 적정 농도로 조성할 수 있는 분위기박스를 에어와이퍼와 드플렉터롤 사이에 설치하고, 도금욕으로 인양된 강판을 그 도금된 용융금속이 응고하는 시점에서, 건조 또는 습윤상태의 기체로서 비산화성 또는 환원성 분위기로 조정된 상기 분위기 박스에 통과시키는 도금층을 합금화처리하지 않는 용용도금강판을 제조하는 방법에 있어서,상기 비산화성 또는 환원성 분위기로 조정된 분위기 박스에, 부가적으로 수증기 혹은 미스트상 액체를 주입하며, 이같은 주입은 순수한 물 또는 10%이하의 첨가제를 포함하는 물을 이용하여 상기 분위기박스 내부로, 0.1wt% 이상의 수증기 농도에 해당하도록 하여 주입하는 것을 특징으로 하는 표면외관이 미려한 용융도금강판 제조방법
- 제 1 항에 있어서,상기 비산화성 또는 환원성 분위기를 조정하기 위한 기체는,a)80%이상의 질소와 나머지는 질소를 제외한 공기성분;b)0.1 ~ 30%의 수소와 나머지는 공기;c)60%이상의 질소와 0.1 ~ 30%의 수소와 나머지는 질소를 제외한 공기성분;d)60%이상의 질소와 0.1 ~ 30%의 수소와 2%이상의 수소화합물과 나머지는 질소를 제외한 공기성분;으로 조성된 기체들 중에서 선택된 것임을 특징으로 하는 표면외관이 미려한 용융도금강판 제조방법
- 제 1 항에 있어서,상기 분위기 기체로 상기에서 설정한 원소들 외에 다른 원소들이 일부 포함되어도 무방하나, 이들의 총량이 10%이하가 되도록 하는 것을 특징으로 하는 표면외관이 미려한 용융도금강판 제조방법.
- 삭제
- 제 1 항에 있어서,상기 분위기 박스에 공급되는 기체 혹은 수증기 혹은 미스트상 액체 가운데 하나 이상을, 상기 에어와이퍼 또는 상기 냉각기 또는 직접 상기 박스에 공급하거나 또는 특정 설비를 추가 설치하여 공급하거나 또는 이들을 병합하여 행하는 것을 특징으로 하는 표면외관이 미려한 용융도금강판 제조방법
- 제 1 항에 있어서,상기 분위기박스 또는 냉각기를 구성함에 있어서, 도금욕에서 인양된 강판에 부착한 용융금속이 응고하는 시점에서 적용될 수 있는 한, 설치 위치는 에어와이퍼와 드플랙터롤 사이의 아무 곳이나 상관없고 1개 단독 혹은 2개 이상으로 분리하여 설치할 수도 있으며, 분위기박스의 조성제어 혹은 도금층의 냉각기능 혹은 용융금속의 스팡글 제어 혹은 강판의 온도제어를 위한 기능 가운데 한가지 이상의 용도로 사용할 수 있는 것을 특징으로 하는 표면외관이 미려한 용융도금강판 제조방법
- 제 1 항에 있어서,상기 분위기박스는 그 하단이 대기와 통기되지 않거나 통기되어도 좋으며, 상단 및 하단을 씰롤(seal roll) 혹은 슬롯 등으로 최대한 밀폐하는 것을 특징으로 하는 표면외관이 미려한 용융도금강판 제조방법
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KR20190062936A (ko) | 2017-11-29 | 2019-06-07 | 송샘 | 아연도금강판 장치를 위한 테스트 장치 |
KR20190062940A (ko) | 2017-11-29 | 2019-06-07 | 송샘 | 아연도금강판 장치의 구동조건 산출을 위한 테스트 방법 |
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KR100525907B1 (ko) * | 2001-11-16 | 2005-11-02 | 주식회사 포스코 | 합금화 용융아연도금강판 제조방법 |
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JPS55138065A (en) * | 1979-04-13 | 1980-10-28 | Nippon Steel Corp | Production of one side galvanized steel plate |
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JPS55138065A (en) * | 1979-04-13 | 1980-10-28 | Nippon Steel Corp | Production of one side galvanized steel plate |
KR830005390A (ko) * | 1981-02-04 | 1983-08-13 | 사이도오 에이시로오 | 용융침적식 아연도 강판의 제조방법 |
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Cited By (2)
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KR20190062936A (ko) | 2017-11-29 | 2019-06-07 | 송샘 | 아연도금강판 장치를 위한 테스트 장치 |
KR20190062940A (ko) | 2017-11-29 | 2019-06-07 | 송샘 | 아연도금강판 장치의 구동조건 산출을 위한 테스트 방법 |
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