JP4411326B2 - リン酸塩処理性に優れた高強度合金化溶融亜鉛めっき鋼板 - Google Patents
リン酸塩処理性に優れた高強度合金化溶融亜鉛めっき鋼板 Download PDFInfo
- Publication number
- JP4411326B2 JP4411326B2 JP2007018117A JP2007018117A JP4411326B2 JP 4411326 B2 JP4411326 B2 JP 4411326B2 JP 2007018117 A JP2007018117 A JP 2007018117A JP 2007018117 A JP2007018117 A JP 2007018117A JP 4411326 B2 JP4411326 B2 JP 4411326B2
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- plating layer
- oxidation
- oxide
- concentration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 title claims description 85
- 239000010959 steel Substances 0.000 title claims description 85
- 238000007747 plating Methods 0.000 claims description 61
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 25
- 229910019142 PO4 Inorganic materials 0.000 claims description 21
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 21
- 239000010452 phosphate Substances 0.000 claims description 21
- 229910052748 manganese Inorganic materials 0.000 claims description 16
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 description 27
- 238000007254 oxidation reaction Methods 0.000 description 27
- 238000000034 method Methods 0.000 description 18
- 239000013078 crystal Substances 0.000 description 17
- 229910052710 silicon Inorganic materials 0.000 description 15
- 239000011248 coating agent Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 10
- 229910001335 Galvanized steel Inorganic materials 0.000 description 9
- 238000005275 alloying Methods 0.000 description 9
- 239000008397 galvanized steel Substances 0.000 description 9
- 230000033116 oxidation-reduction process Effects 0.000 description 8
- 238000000137 annealing Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000000446 fuel Substances 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 4
- 229910000165 zinc phosphate Inorganic materials 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012935 Averaging Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000009616 inductively coupled plasma Methods 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005237 degreasing agent Methods 0.000 description 1
- 239000013527 degreasing agent Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000004453 electron probe microanalysis Methods 0.000 description 1
- 238000004993 emission spectroscopy Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 238000004452 microanalysis Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000011701 zinc Substances 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
- C23C2/04—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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
-
- 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
- C23C2/003—Apparatus
- C23C2/0038—Apparatus characterised by the pre-treatment chambers located immediately upstream of the bath or occurring locally before the dipping process
-
- 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
- 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
- C23C2/0224—Two or more thermal pretreatments
-
- 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
- C23C2/024—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by cleaning or etching
-
- 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
- C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12785—Group IIB metal-base component
- Y10T428/12792—Zn-base component
- Y10T428/12799—Next to Fe-base component [e.g., galvanized]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12951—Fe-base component
- Y10T428/12958—Next to Fe-base component
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12951—Fe-base component
- Y10T428/12972—Containing 0.01-1.7% carbon [i.e., steel]
Description
0.08≦[Si]≦0.25 …(1)
[Mn]/[Si]≦3.0(但し、0.21≦[Mn]) …(2)
0.08≦[Si]≦0.25 …(1)
[Mn]/[Si]≦3.0(但し、0.21≦[Mn]) …(2)
Cは、鋼板の強度を確保するために必要な元素であり、その効果を発揮させるためには、C含有量は0.03%以上とする必要があり、好ましくは0.05%以上である。しかしながら、C含有量が過剰になると溶接性が低下するので、0.3%以下とする必要があり、好ましくは0.25%以下である。
Siは、固溶強化能が大きく、また延性を低下させずに強度を高めることができる元素である。こうした効果を十分に発揮させるには、Si含有量は0.5%以上とすることが必要であり、好ましくは0.7%以上である。しかしながら、Si含有量が過剰になると、強度が高くなりすぎて圧延負荷が増大し、しかも熱間圧延の際にはSiスケールを発生して鋼板の表面性状も悪化させるので、3.0%以下とする必要があり、好ましくは2.5%以下である。
Mnは、鋼板の強度確保のために有効な元素であり、また残留オーステナイトの生成を促進して加工性を高めるのにも有効な元素である。こうした効果を発揮させるためには、0.5%以上含有させる必要があり、好ましくは1.0%以上である。しかしながら、3.5%を超えて過剰に含有させると、延性や溶接性が劣化することになる。好ましくは3.0%以下とするのが良い。
Crは、鋼板の焼入れ性を高め、低温変態生成相のうちマルテンサイトの生成を促進する元素であり、鋼板の高強度化に有効に作用する。こうした効果を発揮させるためには、Cr含有量を0.001%以上とすることが好ましいが、過剰に含有させてもその効果が飽和し、コスト高となるので、1.0%以下とするのが良い。
Alは、脱酸のために少なくとも0.005%以上含有させることが好ましい。しかしながら、Al含有量が過剰になると、鋼板の脆化やコストアップを招くため、3.0%以下とすることが好ましい。
無酸素炉(NOF)と焼鈍炉の間に酸化炉(OF)を設置したCGLにて、下記表1に示す化学成分の素地鋼板を用い(板厚:いずれも1.4mm)、以下に示す条件でGA鋼板を製造した。
(1)ライン速度:40m/分
直火火炎バーナー設置タイプ
空燃比:0.95(酸化炉を使用せず、NOFで酸化を実施する場合には、空燃
比:1.20に設定)
滞留時間:28秒
バーナータイプ:直火火炎バーナー
バーナー本数:鋼板表面側、裏面側の各々に、鋼板に垂直に火炎を照射するバーナーを
鋼板進行方向に2段(計4本)設置
炉長:4m
空燃比:1.42
酸素・水蒸気投入:なし
OFバーナー出力:MAX(COGガス流量:50Nm3/h/ノズル)とMAXの6
0%(COGガス流量:30Nm3/h/ノズル)の2段階に調整
[但し、Nm3のNはnormalの意味;298K、105Paでの体積をいう]
OF出側板温:710〜810℃
酸化炉滞留時間:6秒
酸化速度:MIN(1.8%Si鋼、OFバーナー出力60%、OF出側板温:770
℃時間が最低酸化速度で、約500Å/秒相当)
雰囲気:N2−15体積%H2
露点:−30℃
鋼板温度:800〜860℃
滞留時間:50秒
浴組成:Zn−0.10質量%Al(Al:有効濃度)
浴温:460℃
侵入鋼板温度:460℃
滞留時間:3.8秒
直火加熱タイプ
合金化炉温度:800〜1100℃
合金化板厚:480〜580℃
滞留時間:20秒
結晶サイズはSEM(走査型電子顕微鏡)にて表面を倍率1000倍で観察し、視野内でサイズの大きい5個の結晶サイズを平均し、これを5視野で実施し、平均化することによって結晶サイズとして求め、良否を以下の基準で評価した。
(評価基準)
○:結晶サイズ≦20μm
△:20μm<結晶サイズ≦25μm
×:25μm<結晶サイズ
(評価基準)
○:面比≦4
△:4<面比≦5
×:5<面比
Claims (4)
- Fe−Zn合金めっき層を少なくとも素地鋼板の片面に有する高強度合金化溶融亜鉛めっき鋼板であって、前記素地鋼板は、C:0.03〜0.3%(「質量%」の意味、以下同じ)、Si:0.5〜3.0%、Mn:0.5〜3.5%を夫々含有し、残部が鉄および不可避的不純物からなり、前記Fe−Zn合金めっき層は、酸化物として存在するSi濃度を[Si](質量%)、酸化物として存在するMn濃度を[Mn](質量%)としたとき、これらが下記(1)式および(2)式の関係を満足すると共に、めっき層中のAl含有量が0.35%以上であることを特徴とするリン酸塩処理性に優れた高強度合金化溶融亜鉛めっき鋼板。
0.08≦[Si]≦0.25 …(1)
[Mn]/[Si]≦3.0(但し、0.21≦[Mn]) …(2) - めっき層中のFe濃度が7〜15%である請求項1に記載の高強度合金化溶融亜鉛めっき鋼板。
- 素地鋼板は、更にCrを0.001〜1.0%含有するものである請求項1または2に記載の高強度合金化溶融亜鉛めっき鋼板。
- 素地鋼板は、更にAlを0.005〜3.0%含有するものである請求項1〜3のいずれかに記載の高強度合金化溶融亜鉛めっき鋼板。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007018117A JP4411326B2 (ja) | 2007-01-29 | 2007-01-29 | リン酸塩処理性に優れた高強度合金化溶融亜鉛めっき鋼板 |
US12/520,105 US8697252B2 (en) | 2007-01-29 | 2008-01-07 | High-strength hot-dip galvannealed steel sheet with superior phosphatability |
CN2008800023063A CN101583734B (zh) | 2007-01-29 | 2008-01-07 | 磷酸盐处理性优异的高强度合金化熔融镀锌钢板 |
EP08702902.1A EP2112247B1 (en) | 2007-01-29 | 2008-01-07 | High-strength hot-dip galvannealed steel sheet with superior phosphatability |
KR1020097015859A KR101210019B1 (ko) | 2007-01-29 | 2008-01-07 | 인산염 처리성이 우수한 고강도 합금화 용융 아연 도금 강판 |
PCT/JP2008/050021 WO2008093508A1 (ja) | 2007-01-29 | 2008-01-07 | リン酸塩処理性に優れた高強度合金化溶融亜鉛めっき鋼板 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007018117A JP4411326B2 (ja) | 2007-01-29 | 2007-01-29 | リン酸塩処理性に優れた高強度合金化溶融亜鉛めっき鋼板 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008184642A JP2008184642A (ja) | 2008-08-14 |
JP4411326B2 true JP4411326B2 (ja) | 2010-02-10 |
Family
ID=39673822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007018117A Active JP4411326B2 (ja) | 2007-01-29 | 2007-01-29 | リン酸塩処理性に優れた高強度合金化溶融亜鉛めっき鋼板 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8697252B2 (ja) |
EP (1) | EP2112247B1 (ja) |
JP (1) | JP4411326B2 (ja) |
KR (1) | KR101210019B1 (ja) |
CN (1) | CN101583734B (ja) |
WO (1) | WO2008093508A1 (ja) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5444752B2 (ja) * | 2009-02-23 | 2014-03-19 | Jfeスチール株式会社 | 高強度溶融亜鉛めっき鋼板の製造方法および高強度合金化溶融亜鉛めっき鋼板の製造方法 |
CN104388870B (zh) | 2009-12-29 | 2017-04-12 | Posco公司 | 一种热压模塑部件 |
JP5966528B2 (ja) | 2011-06-07 | 2016-08-10 | Jfeスチール株式会社 | めっき密着性に優れた高強度溶融亜鉛めっき鋼板およびその製造方法 |
CN103827341B (zh) * | 2011-09-30 | 2016-08-31 | 新日铁住金株式会社 | 热浸镀锌钢板及其制造方法 |
JP5789208B2 (ja) * | 2012-03-08 | 2015-10-07 | 株式会社神戸製鋼所 | 化成処理性と延性に優れた高強度合金化溶融亜鉛めっき鋼板とその製造方法 |
WO2013160567A1 (fr) | 2012-04-25 | 2013-10-31 | Arcelormittal Investigacion Y Desarrollo, S.L. | Procédé de réalisation d'une tôle prélaquée à revêtements znalmg et tôle correspondante. |
US9828663B2 (en) | 2012-06-25 | 2017-11-28 | Jfe Steel Corporation | Galvannealed steel sheet with excellent anti-powdering property |
JP5915569B2 (ja) * | 2013-03-01 | 2016-05-11 | Jfeスチール株式会社 | 溶融亜鉛めっき鋼板の製造方法および連続溶融亜鉛めっき装置 |
JP5920249B2 (ja) | 2013-03-05 | 2016-05-18 | Jfeスチール株式会社 | めっき密着性に優れた高強度溶融亜鉛めっき鋼板およびその製造方法 |
JP5852690B2 (ja) | 2013-04-26 | 2016-02-03 | 株式会社神戸製鋼所 | ホットスタンプ用合金化溶融亜鉛めっき鋼板 |
JP5799996B2 (ja) | 2013-09-12 | 2015-10-28 | Jfeスチール株式会社 | 外観性とめっき密着性に優れる溶融亜鉛めっき鋼板および合金化溶融亜鉛めっき鋼板ならびにそれらの製造方法 |
WO2016001710A1 (en) | 2014-07-03 | 2016-01-07 | Arcelormittal | Method for producing a high strength coated steel having improved strength and ductility and obtained sheet |
WO2016001702A1 (en) * | 2014-07-03 | 2016-01-07 | Arcelormittal | Method for producing a high strength coated steel sheet having improved strength, ductility and formability |
WO2016001706A1 (en) | 2014-07-03 | 2016-01-07 | Arcelormittal | Method for producing a high strength steel sheet having improved strength and formability and obtained sheet |
WO2016001700A1 (en) | 2014-07-03 | 2016-01-07 | Arcelormittal | Method for producing a high strength steel sheet having improved strength, ductility and formability |
CN108603262B (zh) * | 2016-01-27 | 2020-03-20 | 杰富意钢铁株式会社 | 高屈服比型高强度镀锌钢板及其制造方法 |
KR102231412B1 (ko) | 2016-10-25 | 2021-03-23 | 제이에프이 스틸 가부시키가이샤 | 고강도 용융 아연 도금 강판의 제조 방법 |
US10927441B2 (en) * | 2017-01-31 | 2021-02-23 | Jfe Steel Corporation | High-strength galvanized hot-rolled steel sheet and method for manufacturing same |
CN111575597B (zh) * | 2020-06-10 | 2022-03-25 | 苏州普热斯勒先进成型技术有限公司 | 一种锰系镀覆钢板及其热成型方法和热成型产品 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55122865A (en) | 1979-03-12 | 1980-09-20 | Nippon Steel Corp | Molten zinc plating method for difficult plating steel sheet |
CN1204284C (zh) * | 2000-12-29 | 2005-06-01 | 新日本制铁株式会社 | 具有优异的镀层附着性和冲压成形性的高强度热浸镀锌钢板及其制造方法 |
JP4886118B2 (ja) * | 2001-04-25 | 2012-02-29 | 株式会社神戸製鋼所 | 溶融亜鉛めっき鋼板 |
JP3631710B2 (ja) * | 2001-10-01 | 2005-03-23 | 新日本製鐵株式会社 | 耐食性と延性に優れたSi含有高強度溶融亜鉛めっき鋼板及びその製造方法 |
JP2004107730A (ja) * | 2002-09-19 | 2004-04-08 | Jfe Steel Kk | 曲げ加工性と耐剥離性に優れた溶融Al−Zn系めっき鋼板 |
JP3991860B2 (ja) | 2002-12-25 | 2007-10-17 | Jfeスチール株式会社 | 合金化溶融亜鉛めっき鋼板 |
JP4718782B2 (ja) * | 2003-02-06 | 2011-07-06 | 新日本製鐵株式会社 | 合金化溶融亜鉛めっき鋼板、およびその製造方法 |
JP3997931B2 (ja) | 2003-03-04 | 2007-10-24 | Jfeスチール株式会社 | 高張力溶融亜鉛めっき鋼板の製造方法 |
ES2347435T3 (es) * | 2003-03-31 | 2010-10-29 | Nippon Steel Corporation | Chapa de acero recubierta en caliente con cinc aleado y metodo para su produccion. |
JP2005113233A (ja) * | 2003-10-09 | 2005-04-28 | Nippon Steel Corp | 熱間プレス用Zn系めっき鋼材 |
US20080070060A1 (en) * | 2004-10-07 | 2008-03-20 | Jfe Steel Corporation | Hot-Dip Galvanized Sheet and Method for Manufacturing Same |
WO2006068169A1 (ja) | 2004-12-21 | 2006-06-29 | Kabushiki Kaisha Kobe Seiko Sho | 溶融亜鉛めっき方法及び溶融亜鉛めっき設備 |
JP4741376B2 (ja) * | 2005-01-31 | 2011-08-03 | 新日本製鐵株式会社 | 外観が良好な高強度合金化溶融亜鉛めっき鋼板及びその製造方法と製造設備 |
EP1978113B1 (en) * | 2005-12-06 | 2018-08-01 | Kabushiki Kaisha Kobe Seiko Sho | High-strength galvannealed sheet steels excellent in powdering resistance and process for production of the same |
TWI354706B (en) * | 2006-01-30 | 2011-12-21 | Nippon Steel Corp | Hot-dip galvanealed high-strength steel sheet and |
JP2007270176A (ja) * | 2006-03-30 | 2007-10-18 | Nippon Steel Corp | 表面外観及びめっき密着性に優れた合金化溶融亜鉛めっき鋼板 |
-
2007
- 2007-01-29 JP JP2007018117A patent/JP4411326B2/ja active Active
-
2008
- 2008-01-07 WO PCT/JP2008/050021 patent/WO2008093508A1/ja active Application Filing
- 2008-01-07 US US12/520,105 patent/US8697252B2/en active Active
- 2008-01-07 CN CN2008800023063A patent/CN101583734B/zh active Active
- 2008-01-07 KR KR1020097015859A patent/KR101210019B1/ko active IP Right Grant
- 2008-01-07 EP EP08702902.1A patent/EP2112247B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
US8697252B2 (en) | 2014-04-15 |
JP2008184642A (ja) | 2008-08-14 |
KR20090095669A (ko) | 2009-09-09 |
EP2112247B1 (en) | 2018-06-20 |
CN101583734A (zh) | 2009-11-18 |
EP2112247A1 (en) | 2009-10-28 |
KR101210019B1 (ko) | 2012-12-07 |
EP2112247A4 (en) | 2011-08-03 |
WO2008093508A1 (ja) | 2008-08-07 |
CN101583734B (zh) | 2012-06-27 |
US20100040906A1 (en) | 2010-02-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4411326B2 (ja) | リン酸塩処理性に優れた高強度合金化溶融亜鉛めっき鋼板 | |
US8999084B2 (en) | Method for manufacturing a galvanized steel sheet | |
JP5663833B2 (ja) | 高強度溶融亜鉛めっき鋼板の製造方法 | |
JP5982906B2 (ja) | 高強度溶融亜鉛めっき鋼板の製造方法 | |
JP4932363B2 (ja) | 高強度合金化溶融亜鉛めっき鋼板及びその製造方法 | |
JP5982905B2 (ja) | 高強度溶融亜鉛めっき鋼板の製造方法 | |
JP5630588B2 (ja) | 高強度溶融亜鉛めっき鋼板およびその製造方法 | |
JP3889767B2 (ja) | 溶融亜鉛めっき用高強度鋼板 | |
JP2012126993A (ja) | 溶融Al−Zn系めっき鋼板およびその製造方法 | |
JP5888267B2 (ja) | 高強度溶融亜鉛めっき鋼板の製造方法および高強度溶融亜鉛めっき鋼板 | |
JP2010065314A (ja) | 高強度溶融亜鉛系めっき鋼板およびその製造方法 | |
JP5715344B2 (ja) | 合金化溶融亜鉛めっき鋼板およびその製造方法 | |
US11136641B2 (en) | Mn-containing galvannealed steel sheet and method for producing the same | |
JP2013185215A (ja) | 化成処理性と延性に優れた高強度合金化溶融亜鉛めっき鋼板とその製造方法 | |
CN103814148B (zh) | 涂装后耐腐蚀性优良的合金化热镀锌钢板 | |
JP5906633B2 (ja) | 塗装後耐食性に優れる合金化溶融亜鉛めっき鋼板 | |
JP5354178B2 (ja) | 高強度溶融亜鉛めっき鋼板及び高強度合金化溶融亜鉛めっき鋼板の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20080523 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20090407 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20091110 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20091116 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 4411326 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121120 Year of fee payment: 3 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131120 Year of fee payment: 4 |