JPWO2005056863A1 - 溶融亜鉛めっき鋼板及びその製造方法 - Google Patents
溶融亜鉛めっき鋼板及びその製造方法 Download PDFInfo
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- 229910001335 Galvanized steel Inorganic materials 0.000 title claims abstract description 48
- 239000008397 galvanized steel Substances 0.000 title claims abstract description 48
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 39
- 238000007747 plating Methods 0.000 claims abstract description 142
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 52
- 239000010959 steel Substances 0.000 claims abstract description 52
- 239000000463 material Substances 0.000 claims abstract description 28
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 238000007711 solidification Methods 0.000 claims abstract description 7
- 230000008023 solidification Effects 0.000 claims abstract description 7
- 238000007598 dipping method Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims description 30
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 25
- 239000000203 mixture Substances 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 239000011701 zinc Substances 0.000 description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 17
- 238000005275 alloying Methods 0.000 description 15
- 238000011282 treatment Methods 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 239000003595 mist Substances 0.000 description 8
- 239000010410 layer Substances 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 7
- 239000013078 crystal Substances 0.000 description 6
- 229910052745 lead Inorganic materials 0.000 description 6
- 229910052787 antimony Inorganic materials 0.000 description 5
- 229910052793 cadmium Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 229910052749 magnesium Inorganic materials 0.000 description 5
- 229910052718 tin Inorganic materials 0.000 description 5
- 230000002411 adverse Effects 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000005246 galvanizing Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 239000010953 base metal Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 238000011835 investigation Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 229910001297 Zn alloy Inorganic materials 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000004453 electron probe microanalysis Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 238000004611 spectroscopical analysis Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QZPSXPBJTPJTSZ-UHFFFAOYSA-N aqua regia Chemical compound Cl.O[N+]([O-])=O QZPSXPBJTPJTSZ-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000003887 surface segregation Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 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
- C23C2/34—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
-
- 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
-
- 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
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
ここに、
IF(002)=I(002)/{I(002)+I(100)+I(101)+I(102)+I(103)+I(110)+I(112)}
I(XXX) :X線回折における(XXX)面の積分強度
IF(XXX) :X線回折における(XXX)面の積分強度比率
IFR(XXX):ASTMカード記載の(XXX)面のX線回折における強度比率
である。
このZn(002)面の配向指数が大きいようなめっき皮膜の場合、曲げ変形時にめっき皮膜が双晶変形を起こしにくく皮膜のクラック発生を助長させる。好ましくはZn(002)面の配向指数が4.5以下であり、より好ましくは、4.0以下である。また、耐黒変性の観点からは、Zn(002)面の配向指数が低くなるほど性能が低下するため3.0以上が好ましく、より好ましくは3.5以上である。
めっき浴の浴温が低すぎると、めっき皮膜の粘性が下がり、めっきタレによる凹凸が形成され易くなる。このため、めっき浴の浴温は450℃以上とする。また、めっき浴の浴温が480℃を超えると、鋼板浸漬時にめっき浴との反応性が大きくなり、皮膜中Fe含有量を0.6g/m2以下に制御しにくくなるため、480℃以下に限定する。より好ましい範囲は、455〜475℃である。一方、鋼板がめっき浴に侵入する侵入材温が、浴温+20℃よりも高温であると、これもめっきと鋼板の反応性を促進する。逆に、鋼板がめっき浴に侵入する侵入材温が、浴温より20℃を下回ると、鋼板浸漬近傍の浴温が下がり、Feの溶解度が低下するため過飽和のFeが鋼板へ析出し、この場合も皮膜中のFe量を増加させる方向に働く。従って、鋼板がめっき浴に侵入する侵入材温は、浴温より20℃を下回らないようにする。
めっき後の鋼板は、表面性状および機械特性の調整を目的として、通常、スキンパス圧延される。前述したように、スキンパス圧延によってもめっき皮膜の配向性は変化し加工性に影響し得るが、スキンパス条件によっては鋼の機械特性に悪影響を及ぼすことがある。本発明においては、めっき後に放冷または空冷することにより、一般的な条件のスキンパス圧延(例えばダル加工されたワークロールで伸び率0.8%程度)を施しても、良好な加工性が確保される。
表1に示す化学組成を有する0.8mm厚の冷延鋼板を、連続溶融亜鉛めっき設備にて、還元性雰囲気中で焼鈍し、母材とした。
このようにして得ためっき鋼板に、スキンパス圧延(ダル加工されたワークロールで伸び率約0.8%)を施した。
得られためっき鋼板のめっき皮膜の性状を、以下の方法で調査した。
また、参考までに、めっき浴およびめっき皮膜中のSiの別の測定方法としては、次の方法がある。まず、凝固しためっき浴またはめっき皮膜を15%NaOHで溶解したのち、この溶液を1:1王水に過酸化水素を4%添加したものと混合して約60℃に加熱する。このようにして得た溶液から、ICP分光分析法で分析するものである。
◎:亀裂が全く認められない。
○:小さな亀裂が一部に認められる。
△:小さな亀裂が全面に認められる。
×:大小の亀裂が混在し、全面に認められる。
××:大きな亀裂が全面に認められる。
Claims (6)
- 鋼板を溶融めっき浴に浸漬し引き上げて前記鋼板表面にめっき皮膜を付着させるめっき工程と、前記めっき工程に引き続き前記めっき皮膜の付着量を調整する付着量調整工程と、前記付着量調整工程の後に前記めっき皮膜を凝固させる皮膜凝固工程とを含む、溶融亜鉛めっき鋼板の製造方法であって、
前記めっき浴中でのAl濃度、Si濃度が、それぞれ0.13〜0.3質量%、5〜150質量ppmであるとともに、
前記めっき浴の浴温が450〜480℃、前記めっき浴に侵入する前記鋼板の侵入材温が前記浴温±20℃以内である、
溶融亜鉛めっき鋼板の製造方法。 - 前記皮膜凝固工程は、放冷及び/または空冷で前記めっき皮膜を凝固させる工程であることを特徴とする請求の範囲第1項に記載の溶融亜鉛めっき鋼板の製造方法。
- 前記めっき浴中のMg濃度が100質量ppm未満、Pb+Sn+Cd+Sbの合計濃度が200質量ppm以下であることを特徴とする、請求の範囲第1項に記載の溶融亜鉛めっき鋼板の製造方法。
- めっき皮膜中のAl濃度、Si濃度がそれぞれ0.15〜0.6質量%、5〜150質量ppmであるとともに、Fe含有量が0.6g/m2以下である、溶融亜鉛めっき鋼板。
- 前記めっき皮膜のZn(002)面の配向指数が、3.0〜4.5であることを特徴とする、請求の範囲第4項に記載の溶融亜鉛めっき鋼板。
- 前記めっき皮膜中のMg濃度が100質量ppm未満、Pb+Sn+Cd+Sbの合計濃度が200質量ppm以下であることを特徴とする、請求の範囲第4項に記載の溶融亜鉛めっき鋼板。
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PCT/JP2004/018495 WO2005056863A1 (ja) | 2003-12-12 | 2004-12-10 | 溶融亜鉛めっき鋼板及びその製造方法 |
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UA84778C2 (ru) * | 2004-06-29 | 2008-11-25 | Корус Сталь Б. В. | Стальная полоса с покрытием из цинкового сплава, нанесенное методом горячего оцинкования, и способ ее производства |
JP5119833B2 (ja) * | 2007-09-27 | 2013-01-16 | Jfeスチール株式会社 | 表面処理鋼板 |
KR20100034118A (ko) | 2008-09-23 | 2010-04-01 | 포항공과대학교 산학협력단 | 마르텐사이트 조직을 가진 초고강도 용융아연도금 강판 및 그 제조 방법 |
AU2010267413B2 (en) * | 2009-06-30 | 2015-05-21 | Nippon Steel Corporation | Zn-Al-Mg coated steel sheet and producing method thereof |
CN101812654A (zh) * | 2010-05-18 | 2010-08-25 | 梁士臣 | 在生产中气刀气源为空气的热浸镀锌铝镁稀土镀层钢带 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5767153A (en) * | 1980-10-09 | 1982-04-23 | Nippon Steel Corp | Production of zinc alloy hot dipped steel plate of high resistance to exfoliation of plating with time |
JPH02267281A (ja) * | 1989-04-07 | 1990-11-01 | Sumitomo Metal Ind Ltd | 耐白錆性および耐黒変性に優れた溶融亜鉛めっき鋼板とその製造方法 |
JPH09209109A (ja) * | 1996-02-08 | 1997-08-12 | Sumitomo Metal Ind Ltd | 微小スパングル溶融Zn−Al系合金めっき鋼板とその製法 |
JP2001247951A (ja) * | 1999-12-28 | 2001-09-14 | Kawasaki Steel Corp | めっき密着性および溶接性に優れた溶融亜鉛めっき鋼板並びにその製造方法 |
JP2002194518A (ja) * | 2000-12-26 | 2002-07-10 | Sumitomo Metal Ind Ltd | 溶接性に優れた溶融亜鉛めっき鋼板およびその製造方法 |
JP2002371342A (ja) * | 2001-06-14 | 2002-12-26 | Sumitomo Metal Ind Ltd | 溶融亜鉛めっき鋼板およびその製造方法 |
JP2003183800A (ja) * | 2001-12-19 | 2003-07-03 | Kawatetsu Galvanizing Co Ltd | 耐黒変性および耐食性に優れた溶融亜鉛系めっき鋼板およびその製造方法 |
-
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- 2004-12-10 WO PCT/JP2004/018495 patent/WO2005056863A1/ja active Application Filing
- 2004-12-10 JP JP2005516195A patent/JP4506672B2/ja active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5767153A (en) * | 1980-10-09 | 1982-04-23 | Nippon Steel Corp | Production of zinc alloy hot dipped steel plate of high resistance to exfoliation of plating with time |
JPH02267281A (ja) * | 1989-04-07 | 1990-11-01 | Sumitomo Metal Ind Ltd | 耐白錆性および耐黒変性に優れた溶融亜鉛めっき鋼板とその製造方法 |
JPH09209109A (ja) * | 1996-02-08 | 1997-08-12 | Sumitomo Metal Ind Ltd | 微小スパングル溶融Zn−Al系合金めっき鋼板とその製法 |
JP2001247951A (ja) * | 1999-12-28 | 2001-09-14 | Kawasaki Steel Corp | めっき密着性および溶接性に優れた溶融亜鉛めっき鋼板並びにその製造方法 |
JP2002194518A (ja) * | 2000-12-26 | 2002-07-10 | Sumitomo Metal Ind Ltd | 溶接性に優れた溶融亜鉛めっき鋼板およびその製造方法 |
JP2002371342A (ja) * | 2001-06-14 | 2002-12-26 | Sumitomo Metal Ind Ltd | 溶融亜鉛めっき鋼板およびその製造方法 |
JP2003183800A (ja) * | 2001-12-19 | 2003-07-03 | Kawatetsu Galvanizing Co Ltd | 耐黒変性および耐食性に優れた溶融亜鉛系めっき鋼板およびその製造方法 |
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WO2005056863A1 (ja) | 2005-06-23 |
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