JP2019522116A - 優れたリン酸塩処理性を有する低密度冷間圧延鋼板及びその製造方法 - Google Patents
優れたリン酸塩処理性を有する低密度冷間圧延鋼板及びその製造方法 Download PDFInfo
- Publication number
- JP2019522116A JP2019522116A JP2019514171A JP2019514171A JP2019522116A JP 2019522116 A JP2019522116 A JP 2019522116A JP 2019514171 A JP2019514171 A JP 2019514171A JP 2019514171 A JP2019514171 A JP 2019514171A JP 2019522116 A JP2019522116 A JP 2019522116A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- rolled steel
- low
- density cold
- cold
- 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.)
- Granted
Links
- 239000010960 cold rolled steel Substances 0.000 title claims abstract description 113
- 238000004519 manufacturing process Methods 0.000 title claims description 30
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 140
- 239000002245 particle Substances 0.000 claims abstract description 82
- 229910052742 iron Inorganic materials 0.000 claims abstract description 69
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 99
- 239000010959 steel Substances 0.000 claims description 99
- 238000000137 annealing Methods 0.000 claims description 30
- 229910001566 austenite Inorganic materials 0.000 claims description 28
- 238000002791 soaking Methods 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 15
- 230000000717 retained effect Effects 0.000 claims description 14
- 230000009467 reduction Effects 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 10
- 238000005097 cold rolling Methods 0.000 claims description 9
- 229910000859 α-Fe Inorganic materials 0.000 claims description 7
- 238000005098 hot rolling Methods 0.000 claims description 5
- 229910052748 manganese Inorganic materials 0.000 claims description 5
- 238000005554 pickling Methods 0.000 claims description 4
- 238000003723 Smelting Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 51
- 229910019142 PO4 Inorganic materials 0.000 description 42
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 42
- 239000010452 phosphate Substances 0.000 description 42
- 238000000034 method Methods 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 17
- 230000015572 biosynthetic process Effects 0.000 description 15
- 230000008569 process Effects 0.000 description 15
- 230000003647 oxidation Effects 0.000 description 10
- 238000007254 oxidation reaction Methods 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- 239000000758 substrate Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 229910052729 chemical element Inorganic materials 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910000734 martensite Inorganic materials 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000006104 solid solution Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005261 decarburization Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- 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
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
-
- 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
- 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0273—Final recrystallisation annealing
-
- 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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
Description
(1)製錬及び鋳造の工程と、
(2)熱間圧延の工程と、
(3)酸洗いの工程と、
(4)冷間圧延の工程と、
(5)750℃〜950℃の均熱温度まで加熱した後、30秒間〜600秒間保持する連続焼鈍の工程であって、焼鈍雰囲気の露点が−15℃〜20℃であり、次いで冷却後の均熱ストリップ鋼を巻き取る、工程と、
を含む製造方法を提供する。
(1)本発明による低密度冷間圧延鋼板は、Al元素の高い含有量のために低い密度(すなわち、7500kg/m3未満)を有することから、軽量化が達成される。
(2)本発明による低密度冷間圧延鋼板は、鉄粒子層を有することで優れたリン酸塩処理性を有する。
(3)本発明による低密度冷間圧延鋼板は、優れた機械的特性を有し、25%超の伸び及び800MPa超の引張強度を有する。
表1に、実施例A1〜A16の優れたリン酸塩処理性を有する低密度冷間圧延鋼板及び比較例B1〜B6の従来の鋼板の各鋼板の成分中における化学元素の質量百分率を挙げる。
(1)表1中の対応する成分の化学元素の質量百分率に応じた製錬及び鋳造の工程
(2)熱間圧延の工程:加熱温度を1000℃〜1250℃に制御し、保持時間を0.5時間〜3時間とし、仕上圧延温度を800℃以上とし、次いで熱間圧延板を750℃未満の温度で巻き取る。
(3)酸洗いの工程
(4)冷間圧延の工程:冷間圧下率を30%〜90%に制御する。
(5)連続焼鈍の工程:750℃〜950℃の均熱温度に加熱した後、30秒間〜600秒間保持し、次いで冷却後の均熱ストリップ鋼を巻き取る。ここで、加熱部及び保持部の雰囲気はN2及びH2の混合ガスであり、H2の体積含有率を0.5%〜20%とし、焼鈍雰囲気の露点を−15℃〜20℃とし、加熱速度を1℃/秒〜20℃/秒とし、均熱後の冷却速度を1℃/秒〜150℃/秒とする。
Claims (21)
- 優れたリン酸塩処理性を有する低密度冷間圧延鋼板であって、
前記低密度冷間圧延鋼板の表面上に鉄粒子層が配置され、前記鉄粒子層中に分散した鉄粒子が存在し、
前記低密度冷間圧延鋼板が質量百分率で3.0%〜7.0%のAl元素を含有する、低密度冷間圧延鋼板。 - 前記鉄粒子層の内側に前記鉄粒子層に隣接した内部酸化層を有し、前記内部酸化層がAl酸化物を含有する、請求項1に記載の低密度冷間圧延鋼板。
- 前記内部酸化層はMn酸化物を更に含有する、請求項2に記載の低密度冷間圧延鋼板。
- 前記内部酸化層は0.2μm〜10μmの厚さを有する、請求項2又は請求項3に記載の低密度冷間圧延鋼板。
- 前記内部酸化層の酸化物は粒界及び粒内に存在する、請求項2又は請求項3に記載の低密度冷間圧延鋼板。
- 前記鉄粒子層の厚さは前記内部酸化層の厚さ未満である、請求項2又は請求項3に記載の低密度冷間圧延鋼板。
- 前記鉄粒子層は0.1μm〜5μmの厚さを有する、請求項1に記載の低密度冷間圧延鋼板。
- 前記鉄粒子は0.1μm〜5μmの粒径を有する、請求項1に記載の低密度冷間圧延鋼板。
- 前記鉄粒子は前記鋼板の表面積の30%以上を覆う、請求項1に記載の低密度冷間圧延鋼板。
- 隣接鉄粒子間の最大間隔は該鉄粒子の平均粒径の10倍以下である、請求項1に記載の低密度冷間圧延鋼板。
- 前記鋼板の微細構造はフェライト及び残留オーステナイトである、請求項1に記載の低密度冷間圧延鋼板。
- 前記残留オーステナイトの相比率は6%〜30%である、請求項11に記載の低密度冷間圧延鋼板。
- 前記残留オーステナイト中のC元素の質量百分率は0.8%以上である、請求項11又は請求項12に記載の低密度冷間圧延鋼板。
- 前記低密度冷間圧延鋼板は7500kg/m3未満の密度を有する、請求項1に記載の低密度冷間圧延鋼板。
- 前記低密度冷間圧延鋼板は、C元素が0.25%〜0.50%、Mn元素が0.25%〜4.0%、Al元素が3.0%〜7.0%となる化学元素の質量百分率を有し、残部がFe及び他の不可避的不純物である、請求項1又は請求項14に記載の低密度冷間圧延鋼板。
- 前記低密度冷間圧延鋼板は、25%超の伸び、及び、800MPa超の引張強度を有する、請求項15に記載の低密度冷間圧延鋼板。
- 請求項1〜請求項16のいずれか1つに記載の低密度冷間圧延鋼板の製造方法であって、
製錬及び鋳造の工程(1)と、
熱間圧延の工程(2)と、
酸洗いの工程(3)と、
冷間圧延の工程(4)と、
750℃〜950℃の均熱温度まで加熱した後、30秒間〜600秒間保持する連続焼鈍の工程であって、焼鈍雰囲気の露点が−15℃〜20℃であり、次いで冷却後の均熱ストリップ鋼を巻き取る、工程(5)と、
を含む製造方法。 - 前記工程(2)において、加熱温度は1000℃〜1250℃であり、保持時間は0.5時間〜3時間であり、仕上圧延温度は800℃〜900℃であり、次いで熱間圧延板を500℃〜750℃で巻き取る、請求項17に記載の低密度冷間圧延鋼板の製造方法。
- 前記工程(4)における冷間圧下率は30%〜90%である、請求項17に記載の低密度冷間圧延鋼板の製造方法。
- 前記工程(5)において、加熱部及び保持部の雰囲気はN2及びH2の混合ガスであり、H2の体積含有率は0.5%〜20%である、請求項17に記載の低密度冷間圧延鋼板の製造方法。
- 工程(5)において、加熱速度は1℃/秒〜20℃/秒であり、均熱後の冷却速度は1℃/秒〜150℃/秒である、請求項17に記載の低密度冷間圧延鋼板の製造方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610486477.4 | 2016-06-28 | ||
CN201610486477.4A CN106011652B (zh) | 2016-06-28 | 2016-06-28 | 一种磷化性能优异的冷轧低密度钢板及其制造方法 |
PCT/CN2017/086174 WO2018001019A1 (zh) | 2016-06-28 | 2017-05-26 | 一种磷化性能优异的冷轧低密度钢板及其制造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2019522116A true JP2019522116A (ja) | 2019-08-08 |
JP6824393B2 JP6824393B2 (ja) | 2021-02-03 |
Family
ID=57084732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019514171A Active JP6824393B2 (ja) | 2016-06-28 | 2017-05-26 | 優れたリン酸塩処理性を有する低密度冷間圧延鋼板及びその製造方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US11371112B2 (ja) |
EP (1) | EP3476967B1 (ja) |
JP (1) | JP6824393B2 (ja) |
KR (1) | KR102163179B1 (ja) |
CN (1) | CN106011652B (ja) |
WO (1) | WO2018001019A1 (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106011652B (zh) | 2016-06-28 | 2017-12-26 | 宝山钢铁股份有限公司 | 一种磷化性能优异的冷轧低密度钢板及其制造方法 |
CN106756569A (zh) * | 2016-11-18 | 2017-05-31 | 扶绥县科学技术情报研究所 | 提高钢铁材料强度的生产方法 |
CN106399841B (zh) * | 2016-11-18 | 2018-07-03 | 扶绥县科学技术情报研究所 | 超细晶粒的强耐蚀钢铁材料生产方法 |
CN106756571A (zh) * | 2016-11-18 | 2017-05-31 | 扶绥县科学技术情报研究所 | 超细晶粒的高强度钢铁材料生产方法 |
CN106756570A (zh) * | 2016-11-18 | 2017-05-31 | 扶绥县科学技术情报研究所 | 超细晶粒的高韧性钢铁材料生产方法 |
CN106636915A (zh) * | 2016-11-18 | 2017-05-10 | 扶绥县科学技术情报研究所 | 改善钢铁材料力学性质的生产方法 |
CN111926264B (zh) * | 2020-09-16 | 2021-01-26 | 育材堂(苏州)材料科技有限公司 | 一种低密度钢及其制造方法 |
CN112251683A (zh) * | 2020-11-02 | 2021-01-22 | 兰州理工大学 | 一种低密度、高强、高比模量钢铁材料及其制备方法 |
KR102319479B1 (ko) * | 2020-12-10 | 2021-10-29 | 경상국립대학교산학협력단 | 페라이트계 경량 철강의 제조방법 및 이를 이용한 페라이트계 경량 철강 |
CN112795836A (zh) * | 2020-12-29 | 2021-05-14 | 武汉科技大学 | 一种钛处理降低低密度钢中氮化铝夹杂物的方法 |
CN114231822B (zh) * | 2021-10-29 | 2022-11-01 | 攀钢集团攀枝花钢铁研究院有限公司 | 提高冷轧汽车板表面可涂装性能的方法 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60138052A (ja) * | 1983-12-26 | 1985-07-22 | Nippon Kokan Kk <Nkk> | 塗装後の耐食性に優れた冷延鋼板 |
JPH05295564A (ja) * | 1992-04-23 | 1993-11-09 | Nkk Corp | 加工性及び耐錆性に優れたdi缶用めっき鋼板及びその製造方法 |
JP2008056993A (ja) * | 2006-08-31 | 2008-03-13 | Nippon Steel Corp | 伸び、耐食性に優れた高強度溶融亜鉛めっき鋼板及びその製造方法 |
JP2009287114A (ja) * | 2008-05-27 | 2009-12-10 | Posco | 耐リジング性に優れた低比重高強度鋼板、低比重高強度メッキ鋼板及びこれらの製造方法 |
JP2013237923A (ja) * | 2012-04-20 | 2013-11-28 | Jfe Steel Corp | 高強度鋼板およびその製造方法 |
JP2014501852A (ja) * | 2010-12-13 | 2014-01-23 | ポスコ | 降伏比及び延性に優れたオーステナイト系軽量高強度鋼板及びその製造方法 |
JP2015054990A (ja) * | 2013-09-12 | 2015-03-23 | 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 |
US20160145706A1 (en) * | 2013-06-27 | 2016-05-26 | Hyundai Steel Company | High-strength steel sheet and manufacturing method therefor |
JP2017508068A (ja) * | 2013-12-24 | 2017-03-23 | ポスコPosco | 強度及び延性に優れた軽量鋼板及びその製造方法 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI852359L (fi) | 1984-06-27 | 1985-12-28 | Hoffmann La Roche | Dihydropyridinderivat. |
JPH07144750A (ja) | 1993-11-25 | 1995-06-06 | Toyoda Gosei Co Ltd | ワーク搬送台の揺れ防止方法 |
JP4576921B2 (ja) * | 2004-08-04 | 2010-11-10 | Jfeスチール株式会社 | 冷延鋼板の製造方法 |
JP4797807B2 (ja) * | 2006-05-30 | 2011-10-19 | Jfeスチール株式会社 | 高剛性低密度鋼板およびその製造方法 |
EP1995336A1 (fr) * | 2007-05-16 | 2008-11-26 | ArcelorMittal France | Acier à faible densité présentant une bonne aptitude à l'emboutissage |
CN101812571B (zh) * | 2009-02-24 | 2011-09-21 | 宝山钢铁股份有限公司 | 电工钢热轧带钢常化处理中防止内氧化层的方法 |
DE102010017354A1 (de) * | 2010-06-14 | 2011-12-15 | Thyssenkrupp Steel Europe Ag | Verfahren zum Herstellen eines warmgeformten und gehärteten, mit einer metallischen Korrosionsschutzbeschichtung überzogenen Stahlbauteils aus einem Stahlflachprodukt |
WO2013034317A1 (en) | 2011-09-09 | 2013-03-14 | Tata Steel Nederland Technology Bv | Low density high strength steel and method for producing said steel |
KR20130076589A (ko) * | 2011-12-28 | 2013-07-08 | 주식회사 포스코 | 도금표면 품질 및 도금밀착성이 우수한 고강도 용융아연도금강판 및 그 제조방법 |
WO2015001367A1 (en) * | 2013-07-04 | 2015-01-08 | Arcelormittal Investigación Y Desarrollo Sl | Cold rolled steel sheet, method of manufacturing and vehicle |
CN103667883B (zh) * | 2013-12-26 | 2017-01-11 | 北京科技大学 | 一种低密度、高强韧汽车用钢板及制备工艺 |
CN105200441A (zh) * | 2014-05-30 | 2015-12-30 | 宝山钢铁股份有限公司 | 带氧化物层的热镀产品、其制造方法及其应用 |
CN104674109B (zh) | 2015-03-11 | 2017-01-18 | 北京科技大学 | 一种低密度Fe‑Mn‑Al‑C系冷轧汽车用钢板及制备方法 |
CN104928456B (zh) * | 2015-06-30 | 2017-08-25 | 宝山钢铁股份有限公司 | 一种提高普冷铁素体轻质钢延展性的制造方法 |
CN104928568B (zh) * | 2015-06-30 | 2017-07-28 | 宝山钢铁股份有限公司 | 一种铁素体低密度高强钢及其制造方法 |
CN104928569B (zh) * | 2015-06-30 | 2017-03-01 | 宝山钢铁股份有限公司 | 一种800MPa级高延展性的低密度钢及其制造方法 |
CN106011652B (zh) * | 2016-06-28 | 2017-12-26 | 宝山钢铁股份有限公司 | 一种磷化性能优异的冷轧低密度钢板及其制造方法 |
-
2016
- 2016-06-28 CN CN201610486477.4A patent/CN106011652B/zh active Active
-
2017
- 2017-05-26 JP JP2019514171A patent/JP6824393B2/ja active Active
- 2017-05-26 US US16/304,947 patent/US11371112B2/en active Active
- 2017-05-26 KR KR1020187031774A patent/KR102163179B1/ko active IP Right Grant
- 2017-05-26 EP EP17819016.1A patent/EP3476967B1/en active Active
- 2017-05-26 WO PCT/CN2017/086174 patent/WO2018001019A1/zh unknown
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60138052A (ja) * | 1983-12-26 | 1985-07-22 | Nippon Kokan Kk <Nkk> | 塗装後の耐食性に優れた冷延鋼板 |
JPH05295564A (ja) * | 1992-04-23 | 1993-11-09 | Nkk Corp | 加工性及び耐錆性に優れたdi缶用めっき鋼板及びその製造方法 |
JP2008056993A (ja) * | 2006-08-31 | 2008-03-13 | Nippon Steel Corp | 伸び、耐食性に優れた高強度溶融亜鉛めっき鋼板及びその製造方法 |
JP2009287114A (ja) * | 2008-05-27 | 2009-12-10 | Posco | 耐リジング性に優れた低比重高強度鋼板、低比重高強度メッキ鋼板及びこれらの製造方法 |
JP2014501852A (ja) * | 2010-12-13 | 2014-01-23 | ポスコ | 降伏比及び延性に優れたオーステナイト系軽量高強度鋼板及びその製造方法 |
JP2013237923A (ja) * | 2012-04-20 | 2013-11-28 | Jfe Steel Corp | 高強度鋼板およびその製造方法 |
US20160145706A1 (en) * | 2013-06-27 | 2016-05-26 | Hyundai Steel Company | High-strength steel sheet and manufacturing method therefor |
JP2015054990A (ja) * | 2013-09-12 | 2015-03-23 | 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 |
JP2017508068A (ja) * | 2013-12-24 | 2017-03-23 | ポスコPosco | 強度及び延性に優れた軽量鋼板及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US11371112B2 (en) | 2022-06-28 |
EP3476967A1 (en) | 2019-05-01 |
US20210222266A1 (en) | 2021-07-22 |
CN106011652B (zh) | 2017-12-26 |
JP6824393B2 (ja) | 2021-02-03 |
EP3476967B1 (en) | 2021-12-01 |
WO2018001019A1 (zh) | 2018-01-04 |
CN106011652A (zh) | 2016-10-12 |
KR102163179B1 (ko) | 2020-10-08 |
KR20180126070A (ko) | 2018-11-26 |
EP3476967A4 (en) | 2020-02-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6824393B2 (ja) | 優れたリン酸塩処理性を有する低密度冷間圧延鋼板及びその製造方法 | |
US11326243B2 (en) | Low-density hot dip galvanized steel and manufacturing method therefor | |
JP3889768B2 (ja) | 塗膜密着性と延性に優れた高強度冷延鋼板および自動車用鋼部品 | |
KR101615463B1 (ko) | 용융 아연 도금 강판 및 그 제조 방법 | |
KR101638719B1 (ko) | 용융 아연 도금 강판 및 그 제조 방법 | |
KR101893512B1 (ko) | 고강도 용융 아연 도금 강판 및 고강도 합금화 용융 아연 도금 강판의 제조 방법 | |
WO2018043473A1 (ja) | 高強度鋼板およびその製造方法 | |
JP6597889B2 (ja) | 高強度冷延薄鋼板および高強度冷延薄鋼板の製造方法 | |
JP2011063883A (ja) | 超高力鋼組成、超高力鋼製品の製造方法及び得られた製品 | |
JP2009197251A (ja) | 延性に優れる高強度鋼板およびその製造方法 | |
KR20140031337A (ko) | 합금화 용융 아연 도금층 및 그것을 가진 강판 및 그 제조 방법 | |
JP4696870B2 (ja) | 高強度鋼板及びその製造方法 | |
WO2013160928A1 (ja) | 高強度鋼板およびその製造方法 | |
JP7138710B2 (ja) | 冷間圧延及び熱処理された鋼板、その製造方法及び車両部品の製造のためのそのような鋼の使用 | |
JP2021507985A (ja) | 冷間圧延熱処理鋼板及びその製造方法 | |
RU2531216C2 (ru) | Высокопрочный с высоким отношением предела текучести к пределу прочности стальной лист, высокопрочный с высоким отношением предела текучести к пределу прочности холоднокатаный стальной лист, высокопрочный с высоким отношением предела текучести к пределу прочности оцинкованный стальной лист, высокопрочный с высоким отношением предела текучести к пределу прочности оцинкованный погружением стальной лист, высокопрочный с высоким отношением предела текучести к пределу прочности отожженный оцинкованный погружением стальной лист, способ изготовления высокопрочного с высоким отношением предела текучести к пределу прочности холоднокатаного стального листа, способ изготовления высокопрочного с высоким отношением предела текучести к пределу прочности оцинкованного погружением стального листа и способ изготовления высокопрочного с высоким отношением предела текучести к пределу прочности отожженного оцинкованного погружением стального листа | |
JP3680262B2 (ja) | 伸びフランジ性に優れた溶融亜鉛めっき鋼板およびその製造方法 | |
JP6150022B1 (ja) | 冷延鋼板、めっき鋼板及びこれらの製造方法 | |
JP2013227635A (ja) | 高強度冷延鋼板、高強度亜鉛めっき鋼板、高強度冷延鋼板の製造方法、及び高強度亜鉛めっき鋼板の製造方法 | |
WO2013069210A1 (ja) | 高張力熱延めっき鋼板およびその製造方法 | |
JP2012158797A (ja) | 高強度鋼板およびその製造方法 | |
JP4486518B2 (ja) | プレス成形性とプレス成形時の被膜密着性に優れた合金化溶融亜鉛めっき鋼板 | |
KR20200013289A (ko) | 강도, 성형성 및 도금성이 우수한 저비중 클래드 강판 및 그 제조방법 | |
KR101674283B1 (ko) | 신장과 신장 플랜지성이 우수한 저항복비 고강도 냉연 강판 및 그 제조 방법 | |
KR20230077508A (ko) | 굽힘 가공성이 우수한 고강도 강판 및 그 제조방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20181128 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20191118 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20200107 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20200318 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20200901 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20201117 |
|
C60 | Trial request (containing other claim documents, opposition documents) |
Free format text: JAPANESE INTERMEDIATE CODE: C60 Effective date: 20201117 |
|
A911 | Transfer to examiner for re-examination before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20201126 |
|
C21 | Notice of transfer of a case for reconsideration by examiners before appeal proceedings |
Free format text: JAPANESE INTERMEDIATE CODE: C21 Effective date: 20201201 |
|
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: 20201218 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20210112 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6824393 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |