JP2022513143A - めっき密着性及び耐腐食性に優れた亜鉛めっき鋼板及びその製造方法 - Google Patents
めっき密着性及び耐腐食性に優れた亜鉛めっき鋼板及びその製造方法 Download PDFInfo
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- JP2022513143A JP2022513143A JP2021529848A JP2021529848A JP2022513143A JP 2022513143 A JP2022513143 A JP 2022513143A JP 2021529848 A JP2021529848 A JP 2021529848A JP 2021529848 A JP2021529848 A JP 2021529848A JP 2022513143 A JP2022513143 A JP 2022513143A
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- steel sheet
- zinc
- corrosion resistance
- layer
- galvanized
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- 238000007747 plating Methods 0.000 title claims abstract description 135
- 230000007797 corrosion Effects 0.000 title claims abstract description 41
- 238000005260 corrosion Methods 0.000 title claims abstract description 41
- 229910001335 Galvanized steel Inorganic materials 0.000 title claims abstract description 38
- 239000008397 galvanized steel Substances 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 239000010410 layer Substances 0.000 claims description 121
- 229910000831 Steel Inorganic materials 0.000 claims description 53
- 239000010959 steel Substances 0.000 claims description 53
- 239000011777 magnesium Substances 0.000 claims description 32
- 238000001816 cooling Methods 0.000 claims description 30
- 239000011701 zinc Substances 0.000 claims description 23
- 229910052725 zinc Inorganic materials 0.000 claims description 20
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 18
- 229910018084 Al-Fe Inorganic materials 0.000 claims description 14
- 229910018192 Al—Fe Inorganic materials 0.000 claims description 14
- 229910052749 magnesium Inorganic materials 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 10
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 claims description 8
- 230000003746 surface roughness Effects 0.000 claims description 7
- 239000002344 surface layer Substances 0.000 claims description 4
- 238000010828 elution Methods 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 57
- 230000000052 comparative effect Effects 0.000 description 19
- 230000000694 effects Effects 0.000 description 16
- 229910052742 iron Inorganic materials 0.000 description 16
- 239000000463 material Substances 0.000 description 13
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- 239000000203 mixture Substances 0.000 description 5
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- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000009751 slip forming Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 239000013521 mastic Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
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- 230000002401 inhibitory effect Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910018134 Al-Mg Inorganic materials 0.000 description 1
- 229910018467 Al—Mg Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910015372 FeAl Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910000617 Mangalloy Inorganic materials 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
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229910009369 Zn Mg Inorganic materials 0.000 description 1
- 229910007573 Zn-Mg Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910000905 alloy phase Inorganic materials 0.000 description 1
- -1 and at the same time Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 description 1
- 229940007718 zinc hydroxide Drugs 0.000 description 1
- 229910021511 zinc hydroxide Inorganic materials 0.000 description 1
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Abstract
Description
上記亜鉛めっき浴の温度は555℃超過~600℃未満であり、上記素地鋼板の引込温度は565℃超過~600℃未満であることを特徴とする、めっき密着性及び耐腐食性に優れた亜鉛めっき鋼板の製造方法を提供する。
めっき用試験片として、厚さ1.0mm、幅110mm、長さ200mmの冷延鋼板(0.0016%C-0.081%Mn-0.002%Si-0.0091%P-0.0043%S-0.036%Sol.Al)を素地鋼板として準備した後、下記表1の条件でめっきを行ってそれぞれの亜鉛めっき鋼板を製造した。この際、めっき後の冷却は、鋼板の前面及び背面に窒素を噴射して行い、第1冷却は250℃で終了し、第2冷却は常温まで行った。
Claims (10)
- 素地鋼板と、前記素地鋼板の少なくとも一面に形成された亜鉛めっき層と、を含み、
前記亜鉛めっき層は、重量%で、アルミニウム(Al):5.1~35.0%、マグネシウム(Mg):4.0~25.0%、残部亜鉛(Zn)及びその他の不可避不純物を含み、
前記素地鋼板と亜鉛めっき層との界面に、厚さ0.01~15μmのAl-Fe抑制層を含む、めっき密着性及び耐腐食性に優れた亜鉛めっき鋼板。 - 前記亜鉛めっき層は、Feの含量が40~95%である第1領域と、Feの含量が0.01%以上~40%未満である第2領域と、を含み、
前記第2領域は、前記亜鉛めっき層の表層部に面積分率0.01~40%で形成される、請求項1に記載のめっき密着性及び耐腐食性に優れた亜鉛めっき鋼板。 - 前記亜鉛めっき層は、重量%で、アルミニウム(Al):11~15%、マグネシウム(Mg):5.1~9.0%、残部亜鉛(Zn)及びその他の不可避不純物を含む、請求項1に記載のめっき密着性及び耐腐食性に優れた亜鉛めっき鋼板。
- 前記亜鉛めっき層は表面粗さ(Ra)が3~4μmである、請求項1に記載のめっき密着性及び耐腐食性に優れた亜鉛めっき鋼板。
- 重量%で、アルミニウム(Al):5.1~35.0%、マグネシウム(Mg):4.0~25.0%、残部亜鉛(Zn)及びその他の不可避不純物を含む亜鉛めっき浴を準備する段階と、
前記亜鉛めっき浴に素地鋼板を浸漬し、めっきを行って亜鉛めっき鋼板を製造する段階と、
前記亜鉛めっき鋼板を冷却する段階と、を含み、
前記亜鉛めっき浴の温度は555℃超過~600℃未満であり、前記素地鋼板の引込温度は565℃超過~600℃未満である、めっき密着性及び耐腐食性に優れた亜鉛めっき鋼板の製造方法。 - 前記素地鋼板の引込温度が、前記亜鉛めっき浴の温度に比べて5~20℃高い、請求項5に記載のめっき密着性及び耐腐食性に優れた亜鉛めっき鋼板の製造方法。
- 前記冷却は、230~270℃まで0.01~5℃/sの冷却速度で冷却する段階と、常温まで0.05~20℃/sの冷却速度で冷却する段階と、を含む、請求項5に記載のめっき密着性及び耐腐食性に優れた亜鉛めっき鋼板の製造方法。
- 前記冷却はガスを噴射して行う、請求項5に記載のめっき密着性及び耐腐食性に優れた亜鉛めっき鋼板の製造方法。
- 前記冷却を行う前に、前記亜鉛めっき鋼板をガスワイピングする段階をさらに含む、請求項5に記載のめっき密着性及び耐腐食性に優れた亜鉛めっき鋼板の製造方法。
- 前記亜鉛めっき浴は、重量%で、アルミニウム(Al):11~15%、マグネシウム(Mg):5.1~9.0%、残部亜鉛(Zn)及びその他の不可避不純物を含む、請求項5に記載のめっき密着性及び耐腐食性に優れた亜鉛めっき鋼板の製造方法。
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KR102276742B1 (ko) | 2021-07-13 |
JP7244728B2 (ja) | 2023-03-23 |
US11618939B2 (en) | 2023-04-04 |
US20220010420A1 (en) | 2022-01-13 |
KR20200063983A (ko) | 2020-06-05 |
CN113195777A (zh) | 2021-07-30 |
EP3889309A4 (en) | 2021-12-15 |
CN113195777B (zh) | 2023-10-24 |
EP3889309A1 (en) | 2021-10-06 |
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