KR100627478B1 - 용융도금장치와 용융도금방법 - Google Patents
용융도금장치와 용융도금방법 Download PDFInfo
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- KR100627478B1 KR100627478B1 KR1020040113085A KR20040113085A KR100627478B1 KR 100627478 B1 KR100627478 B1 KR 100627478B1 KR 1020040113085 A KR1020040113085 A KR 1020040113085A KR 20040113085 A KR20040113085 A KR 20040113085A KR 100627478 B1 KR100627478 B1 KR 100627478B1
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000007598 dipping method Methods 0.000 title 1
- 238000010438 heat treatment Methods 0.000 claims abstract description 125
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 110
- 238000007747 plating Methods 0.000 claims abstract description 110
- 239000010959 steel Substances 0.000 claims abstract description 110
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 99
- 238000000137 annealing Methods 0.000 claims abstract description 73
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 70
- 230000003647 oxidation Effects 0.000 claims abstract description 69
- 230000009467 reduction Effects 0.000 claims abstract description 66
- 230000001603 reducing effect Effects 0.000 claims abstract description 18
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000001257 hydrogen Substances 0.000 claims abstract description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 45
- 238000010791 quenching Methods 0.000 claims description 12
- 238000010583 slow cooling Methods 0.000 claims description 10
- 239000002344 surface layer Substances 0.000 claims description 9
- 238000005336 cracking Methods 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 7
- 230000000171 quenching effect Effects 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 abstract description 17
- 238000005246 galvanizing Methods 0.000 abstract description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 9
- 239000001301 oxygen Substances 0.000 abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 abstract description 9
- 238000004880 explosion Methods 0.000 abstract description 5
- 239000002436 steel type Substances 0.000 abstract description 2
- 238000005406 washing Methods 0.000 description 21
- 229910045601 alloy Inorganic materials 0.000 description 12
- 239000000956 alloy Substances 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 11
- 238000005275 alloying Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 239000011701 zinc Substances 0.000 description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 229910052725 zinc Inorganic materials 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 229910052748 manganese Inorganic materials 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 239000011148 porous material Substances 0.000 description 4
- 210000004894 snout Anatomy 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 229910052595 hematite Inorganic materials 0.000 description 3
- 239000011019 hematite Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 3
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000003287 bathing Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 101100493710 Caenorhabditis elegans bath-40 gene Proteins 0.000 description 1
- 229910000885 Dual-phase steel Inorganic materials 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 239000010731 rolling oil Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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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
- 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
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
- C23C2/0222—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating in a reactive atmosphere, e.g. oxidising or reducing atmosphere
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
-
- 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
- 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
-
- 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
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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
- 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
- C23C2/50—Controlling or regulating the coating processes
- C23C2/52—Controlling or regulating the coating processes with means for measuring or sensing
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Coating With Molten Metal (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
구분 | 산화열처조건과 얻어진 철산화물층의 조건 | 에어노즐 분사조건 | 덴트유무 | 환원소둔처리한 강판의 철산화물층의 조건 | 도금부착성 | ||||
산화온도 | 피막조성 | 피막두께 | 분사압력 (kg/cm2) | 피막조성 | 피막두께 | 기공율 (면적분율) | 미도금/박리 | ||
A1 | 550℃ | Fe3O4 | 0.7㎛ | 120 | 없음 | FeO | 0.3㎛ | 16 | 없음 |
A2 | 650℃ | Fe3O4 | 1.2㎛ | 150 | 없음 | FeO | 0.7㎛ | 23 | 없음 |
A3 | 450℃ | Fe3O4 | 0.06㎛ | 130 | 없음 | FeO | 0.01㎛ | 1 | 미도금 |
A4 | 750℃ | Fe2O3 | 2.3㎛ | 160 | 발생 | Fe3O4 | 1.5㎛ | 3 | 박리/미도금 |
A5 | 720℃ | Fe2O3 | 2.2㎛ | 150 | 없음 | FeO | 0.9㎛ | 27 | 없음 |
A6 | 720℃ | Fe2O3 | 2.2㎛ | 50 | 발생 | Fe3O4 | 1.2㎛ | 2 | 박리/미도금 |
Claims (11)
- 삭제
- 이송하는 강판의 표면에 산화층을 형성하는 산화열처리로,상기 산화열처리로에서 분리되어 강판의 이송방향으로 보아 후단에 설치되고, 상기 강판의 산화층을 환원하면서 소둔하는 환원소둔로,상기 환원처리된 강판을 용융도금하는 용융도금조를 포함하고,상기 산화열처리로와 환원소둔로의 사이에는 산화피막 두께 측정기가 설치되는 것을 특징으로 하는 연속용융도금장치.
- 제 2항에 있어서, 상기 산화열처리로와 환원소둔로의 사이에는 상기 강판과의 밀착성이 불량한 산화피막 제거수단이 설치되는 것을 특징으로 하는 연속용융도금장치.
- 제 3항에 있어서, 상기 산화피막 제거수단은 에어노즐임을 특징으로 하는 연속용융도금장치.
- 제 2항에 있어서, 상기 산화열처리로는 유도가열로임을 특징으로 하는 연속용융도금장치.
- 제 2항에 있어서, 상기 산화열처리로는 대기분위기를 사용하는 것을 특징으로 하는 연속용융도금장치.
- 난도금성분을 포함하는 강판을 산화열처리로에서 500~700℃의 온도로 산화분위기에서 열처리하여 강판의 표층에는 두께가 0.2~2.5㎛의 철산화피막을 형성하는 단계,상기 산화열처리로와 분리되어 강판의 이송방향으로 후단에 설치되고 가열대, 균열대, 서냉대, 급냉대로 이루어지는 환원소둔로에서 환원소둔하여 표층에는 0.1~1.0㎛의 철산화층이 잔류하도록 하는 단계,상기 환원소둔처리한 강판을 용융도금하는 단계를 포함하여 이루어지는 용융도금방법.
- 제 7항에 있어서, 상기 산화열처리로와 환원소둔로의 사이에서 철산화피막이 형성된 강판의 표층에 100~200Kg/cm2의 공기압으로 에어를 분사하는 것을 특징으로 하는 용융도금방법.
- 제 7항에 있어서, 상기 산화열처리로는 대기분위기임을 특징으로 하는 용융도금방법.
- 제 7항에 있어서, 상기 환원소둔로는 5~20%의 수소와 나머지 질소의 혼합가 스의 환원분위기를 유지하고, 이슬점은 상기 가열대와 균열대의 경우 -30℃이하이고, 상기 서냉대와 급냉대는 -500℃이하임을 특징으로 하는 용융도금방법.
- 삭제
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KR101103588B1 (ko) * | 2009-09-01 | 2012-01-09 | 포스코강판 주식회사 | 용융도금강판의 제조방법 |
WO2012115291A1 (en) * | 2011-02-23 | 2012-08-30 | Posco Coated & Color Steel Co., Ltd. | Method for manufacturing hot dip plated steel |
CN113637935B (zh) * | 2021-07-30 | 2023-03-21 | 舟山市驰宇机械制造有限公司 | 一种主轴镀层加工装置 |
CN115011966A (zh) * | 2022-06-24 | 2022-09-06 | 中冶赛迪工程技术股份有限公司 | 一种连续热镀锌带钢的制备方法 |
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