JP6883096B2 - 連続鋳造鋼片により製造された厚さが最大で177.8mmであるギアラック鋼板及びその製造方法 - Google Patents
連続鋳造鋼片により製造された厚さが最大で177.8mmであるギアラック鋼板及びその製造方法 Download PDFInfo
- Publication number
- JP6883096B2 JP6883096B2 JP2019519334A JP2019519334A JP6883096B2 JP 6883096 B2 JP6883096 B2 JP 6883096B2 JP 2019519334 A JP2019519334 A JP 2019519334A JP 2019519334 A JP2019519334 A JP 2019519334A JP 6883096 B2 JP6883096 B2 JP 6883096B2
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- rolling
- group
- thickness
- continuously cast
- 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 140
- 239000010959 steel Substances 0.000 title claims description 140
- 229910001208 Crucible steel Inorganic materials 0.000 title claims description 48
- 238000004519 manufacturing process Methods 0.000 title claims description 33
- 238000000034 method Methods 0.000 title claims description 24
- 238000005096 rolling process Methods 0.000 claims description 85
- 238000010438 heat treatment Methods 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000009749 continuous casting Methods 0.000 claims description 17
- 238000005496 tempering Methods 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 238000003723 Smelting Methods 0.000 claims description 13
- 238000010791 quenching Methods 0.000 claims description 12
- 230000000171 quenching effect Effects 0.000 claims description 12
- 238000005204 segregation Methods 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 8
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 229910052748 manganese Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 229910052750 molybdenum Inorganic materials 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- 229910052720 vanadium Inorganic materials 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 229910052758 niobium Inorganic materials 0.000 claims description 5
- 239000012467 final product Substances 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 2
- 238000010583 slow cooling Methods 0.000 description 16
- 206010037660 Pyrexia Diseases 0.000 description 6
- 238000005266 casting Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910000760 Hardened steel Inorganic materials 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 238000007670 refining Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000005275 alloying Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000463 material Substances 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
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/60—Aqueous agents
-
- 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
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/613—Gases; Liquefied or solidified normally gaseous 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
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- 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
- C21D8/021—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular fabrication or treatment of ingot or slab
-
- 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
- C21D8/0242—Flattening; Dressing; Flexing
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- 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
- C22C38/001—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
- C22C38/04—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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
Description
本実施例に関するギアラック鋼板の厚さは177.8mmであり、成分及びその質量百分率は、C:0.14%、Si:0.24%、Mn:1.08%、P:0.004%、S:0.0008%、Cr:0.68%、Mo:0.49%、Ni:2.47%、Cu:0.22%、Al:0.073%、V:0.036%、Nb:0.02%、N:0.0027%、B:0.0013%、残部は鉄及び不可避不純物元素であり、炭素当量Ceq(=C+Mn/6+(Cr+Mo+V)/5+(Cu+Ni)/15)=0.74%である。
上記ギアラック鋼板の化学組成に調製された製錬原料は、KR溶銑予備処理−転炉製錬−LF精錬−RH精錬−垂直湾曲型連続鋳造機による連続鋳造(連続鋳造鋼片の厚さ:450mm)−連続鋳造鋼片にカバーを掛けて徐冷−連続鋳造鋼片のクリーニング−加熱(保温処理)−高圧水スケール除去−制御圧延−矯正−制御条件下での徐冷−調質の順に処理される。
本実施例に関するギアラック鋼板の厚さは152.4mmであり、成分及びその質量百分率は、C:0.13%、Si:0.23%、Mn:1.08%、P:0.004%、S:0.001%、Cr:0.51%、Mo:0.49%、Ni:1.39%、Cu:0.23%、Al:0.063%、V:0.038%、Nb:0.0019%、N:0.0042%、B:0.0013%、残部は鉄及び不可避不純物元素であり、炭素当量Ceq=0.63%である。
上記ギアラック鋼板の化学組成に調製された製錬原料は、KR溶銑予備処理−転炉製錬−LF精錬−RH精錬−垂直湾曲型連続鋳造機による連続鋳造(連続鋳造鋼片の厚さ:370mm)−連続鋳造鋼片にカバーを掛けて徐冷−連続鋳造鋼片のクリーニング−加熱(保温処理)−高圧水スケール除去−制御圧延−矯正−カバーを掛け積み重ねて徐冷−調質の順に処理される。
本実施例に関するギアラック鋼板の厚さは152.4mmであり、成分及びその質量百分率は、C:0.13%、Si:0.23%、Mn:1.04%、P:0.004%、S:0.0011%、Cr:0.50%、Mo:0.47%、Ni:1.42%、Cu:0.22%、Al:0.069%、V:0.034%、Nb:0.0015%、N:0.0036%、B:0.0012%、残部は鉄及び不可避不純物元素、炭素当量Ceq=0.61%である。
上記ギアラック鋼板の化学組成に調製された製錬原料は、KR溶銑予備処理−転炉製錬−LF精錬−RH精錬−垂直湾曲型連続鋳造機による連続鋳造(連続鋳造鋼片の厚さ:450mm)−連続鋳造鋼片にカバーを掛けて徐冷−連続鋳造鋼片のクリーニング−加熱(保温処理)−高圧水スケール除去−制御圧延−矯正−カバーを掛け積み重ねて徐冷−調質の順に処理される。
本実施例に関するギアラック鋼板の厚さは127mmであり、成分及びその質量百分率は、C:0.11%、Si:0.28%、Mn:1.04%、P:0.004%、S:0.0009%、Cr:0.52%、Mo:0.50%、Ni:1.36%、Cu:0.22%、Al:0.072%、V:0.038%、N:0.0031%、B:0.0017%、残部は鉄及び不可避不純物元素、炭素当量Ceq=0.60%である。
本実施例に関係するギアラック鋼板の厚さは114.3mmであり、成分及びその質量百分率は、C:0.12%、Si:0.27%、Mn:1.04%、P:0.006%、S:0.0006%、Cr:0.49%、Mo:0.46%、Ni:1.39%、Cu:0.22%、Al:0.0069%、V:0.034%、N:0.0022%、B:0.0016%、残部は鉄及び不可避不純物元素、炭素当量Ceq=0.60%である。
上記の製造工程を経て作製された最終鋼板は、高い強度と優れた可塑性、高い低温靱性及びZ方向性能を有し、総合的な性能に優れており、その機械的性質は表1に示す通りである。
Claims (5)
- 連続鋳造鋼片によって厚さが最大で177.8mmであるギアラック鋼板を製造する方法であって、
製錬原料は、KR溶銑予備処理、転炉製錬、LF精錬、RH精錬及び垂直湾曲型連続鋳造機による連続鋳造の順に処理され、これにより高純度の溶鋼と、厚さ370mm以上の高品質連続鋳造鋼片が得られ、
前記連続鋳造鋼片は、中心偏析がクラスCグレード0.5以上、センターポロシティがグレード0.5以上、センタークラック、コーナークラック及び三角領域クラックがなく、介在物に関し、グループA、グループB及びグループCの粗大介在物=0、グループDの粗大介在物≦0.5、グループAの微細介在物≦0.5、グループBの微細介在物≦0.5、グループCの微細介在物=0、グループDの微細介在物≦0.5、グループDs≦0.5の要件を満たし、
次に連続鋳造鋼片にカバーを掛けて200±50℃まで徐冷し、その後カバーを外して、各連続鋳造鋼片の表面の温度を保ったままクリーニングし、
連続鋳造鋼片を1180〜1280℃に加熱して2〜4時間保温し、保温後、連続鋳造鋼片は高圧水スケール除去によって処理され、その後、二段階圧延され、第一段階の圧延は粗圧延であり、圧延開始温度は1050〜1150℃、総圧縮率は40%以上であり、その圧延は強圧下で実施され、最大単一パス圧下率は17%以上であり、第2段階の圧延は仕上げ圧延であり、圧延開始温度は870〜930℃、総圧縮率は20%以上であり、最終製品の厚さまで圧延され、圧延後、鋼板は空冷及び矯正され、
矯正後の鋼板を冷床で600〜650℃まで空冷した後、カバーを掛け積み重ねて72時間以上徐冷を行い、又は、矯正後の鋼板を600〜650℃で24〜72時間保温した後、炉とともに200±50℃まで冷却し、製品を炉から出して空冷し、
室温まで徐冷した鋼板を調質処理して、厚みの大きなギアラック鋼板最終製品を得ることを特徴とする、
製造方法。 - 前記調質処理の焼入れ加熱は連続炉を使用して実施され、焼入れ加熱温度は900〜930℃であり、在炉時間は1.8〜2.0分/mmであり、焼入れ機を用いて鋼板表面温度が100℃以下になるまで水焼入れした後、鋼板は室温まで空冷され、焼戻し処理も連続炉を使用して実施され、焼戻し温度は600〜660℃であり、在炉時間は2.5〜3.5分/mmであり、出炉後、鋼板は室温まで空冷されることを特徴とする、請求項1に記載の製造方法。
- 前記鋼板の化学成分は、質量百分率で、C:0.11〜0.15%、Si:0.15〜0.35%、Mn:0.95〜1.25%、P:≦0.010%、S:≦0.002%、Cr:0.45〜0.75%、Mo:0.4〜0.6%、Ni:1.3〜2.6%、Cu:0.2〜0.4%、Al:0.06〜0.09%、V:0.03〜0.06%、Nb:≦0.04%、N:≦0.006%、B:0.001〜0.002%、残部:鉄及び不可避的不純物元素であることを特徴とする、請求項1に記載の製造方法。
- 前記ギアラック鋼板の厚さは114.3〜177.8mmであることを特徴とする、請求項1に記載の製造方法。
- 前記鋼板の降伏強度≧690MPa、引張強度は770〜940MPa、伸び≧16%以上、鋼板のZ方向の断面収縮率≧35%以上、−40℃における鋼板の厚さ1/4部分でのシャルピー衝撃エネルギー>100J、−30℃における鋼板の厚さ1/2部分でのシャルピー衝撃エネルギー>100J、−40℃における鋼板の厚さ1/2部分でのシャルピー衝撃エネルギー>100Jであることを特徴とする、請求項1に記載の製造方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2016/102350 WO2018072076A1 (zh) | 2016-10-18 | 2016-10-18 | 一种连铸坯制造的厚度达177.8mm齿条钢板及其制造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2020500108A JP2020500108A (ja) | 2020-01-09 |
JP6883096B2 true JP6883096B2 (ja) | 2021-06-09 |
Family
ID=62018101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019519334A Active JP6883096B2 (ja) | 2016-10-18 | 2016-10-18 | 連続鋳造鋼片により製造された厚さが最大で177.8mmであるギアラック鋼板及びその製造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US11242577B2 (ja) |
EP (1) | EP3505651B1 (ja) |
JP (1) | JP6883096B2 (ja) |
KR (1) | KR20190057095A (ja) |
WO (1) | WO2018072076A1 (ja) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110449463B (zh) * | 2019-07-09 | 2021-10-29 | 舞阳钢铁有限责任公司 | 一种Cr-Mo钢锭直接轧制成材方法 |
CN110565019A (zh) * | 2019-09-29 | 2019-12-13 | 山东钢铁股份有限公司 | 一种高强度耐低温叉车门架型钢及其制备方法 |
CN110923413B (zh) * | 2019-12-16 | 2021-07-13 | 马鞍山钢铁股份有限公司 | 一种钒微合金化600MPa级低温钢筋用钢及其生产方法 |
CN110904319B (zh) * | 2019-12-23 | 2021-04-23 | 新余钢铁股份有限公司 | 一种高碳工具钢sk85冷轧宽钢带的制造工艺 |
CN111621700B (zh) * | 2020-05-06 | 2021-07-20 | 天津钢铁集团有限公司 | 一种低成本q355c钢板生产工艺 |
CN111826586A (zh) * | 2020-06-15 | 2020-10-27 | 舞阳钢铁有限责任公司 | 一种低成本大厚度齿条钢及其生产方法 |
CN111893367B (zh) * | 2020-06-18 | 2022-04-12 | 江阴兴澄特种钢铁有限公司 | 一种以连铸板坯生产5CrNi2MoV热作模具钢钢板的方法 |
CN111876664B (zh) * | 2020-06-19 | 2022-04-12 | 江阴兴澄特种钢铁有限公司 | 一种50CrVA热轧弹簧宽钢板的制造方法 |
CN112239832A (zh) * | 2020-10-21 | 2021-01-19 | 广东韶钢松山股份有限公司 | 提高易切削钢表面质量的方法 |
CN112795728B (zh) * | 2020-12-23 | 2022-09-20 | 天津荣程联合钢铁集团有限公司 | 一种高纯净度钢及生产工艺 |
CN113249542A (zh) * | 2021-05-11 | 2021-08-13 | 河南济源钢铁(集团)有限公司 | 一种提高弹簧钢纯净度及夹杂物塑性化的冶炼工艺、弹簧钢 |
CN113416819A (zh) * | 2021-05-19 | 2021-09-21 | 舞阳钢铁有限责任公司 | 一种大厚度合金容器钢板的生产方法 |
CN113699443A (zh) * | 2021-08-02 | 2021-11-26 | 山东钢铁集团日照有限公司 | 一种调质型x70级别管桩用管线钢及其制备方法 |
CN113774282B (zh) * | 2021-09-09 | 2022-05-10 | 中信重工机械股份有限公司 | 一种矿用磨机铸钢大齿轮材料及其制备工艺 |
CN114410895B (zh) * | 2021-12-29 | 2024-01-23 | 舞阳钢铁有限责任公司 | 一种减少合金钢淬火变形的方法 |
CN114657332B (zh) * | 2022-03-17 | 2024-03-29 | 湖南华菱涟源钢铁有限公司 | 调质钢板材料及其制造方法 |
CN114918621A (zh) * | 2022-05-30 | 2022-08-19 | 湖南华菱湘潭钢铁有限公司 | 免矫直锅炉吊杆用圆钢的生产方法 |
CN116590612A (zh) * | 2022-07-18 | 2023-08-15 | 柳州钢铁股份有限公司 | 低成本的q690钢板 |
CN114959433A (zh) * | 2022-07-22 | 2022-08-30 | 重庆钢铁股份有限公司 | 一种短流程低成本生产高附加值中厚板品种钢的方法 |
CN115889455A (zh) * | 2022-10-28 | 2023-04-04 | 江苏沙钢集团有限公司 | 一种薄规格管线钢的高效轧制方法 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07116798A (ja) * | 1993-10-19 | 1995-05-09 | Nippon Steel Corp | 徐冷カバー |
JPH10263751A (ja) * | 1997-03-27 | 1998-10-06 | Kawasaki Steel Corp | 高炭素鋼の連続鋳造法 |
JP4205933B2 (ja) | 2002-11-19 | 2009-01-07 | 新日本製鐵株式会社 | レーザ切断性が優れた厚鋼板及びその製造法 |
JP5217391B2 (ja) * | 2006-11-30 | 2013-06-19 | Jfeスチール株式会社 | 板厚方向の脆性亀裂伝播停止特性に優れる板厚50mm以上の鋼板およびその製造方法 |
CN101845588A (zh) * | 2009-03-24 | 2010-09-29 | 宝山钢铁股份有限公司 | 一种具有优异z向性能的建筑用特厚钢板及其生产方法 |
CN101899630A (zh) * | 2009-05-25 | 2010-12-01 | 宝山钢铁股份有限公司 | 900MPa级屈服强度的工程机械用调质钢板及其生产方法 |
CN102181801B (zh) * | 2011-04-16 | 2013-05-08 | 舞阳钢铁有限责任公司 | 一种可焊性良好的细晶粒低合金结构钢板及其生产方法 |
JP5267638B2 (ja) * | 2011-11-17 | 2013-08-21 | Jfeスチール株式会社 | 高強度溶融亜鉛めっき鋼板または高強度合金化溶融亜鉛めっき鋼板用熱延鋼板およびその製造方法 |
JP5915374B2 (ja) * | 2012-05-22 | 2016-05-11 | 新日鐵住金株式会社 | 連続鋳造鋳片の表面温度の測定方法およびこの方法を用いた連続鋳造方法 |
JP5846066B2 (ja) * | 2012-07-26 | 2016-01-20 | 新日鐵住金株式会社 | 鋳片の冷却方法 |
CN103469106B (zh) * | 2013-09-17 | 2016-08-17 | 江阴兴澄特种钢铁有限公司 | 直接用连铸坯生产大厚度齿条钢板及其制造方法 |
CN103556075B (zh) | 2013-11-12 | 2015-06-10 | 湖南华菱湘潭钢铁有限公司 | 一种调质高强度q500d特厚钢板的生产方法 |
CN103589969B (zh) * | 2013-11-12 | 2015-06-10 | 湖南华菱湘潭钢铁有限公司 | 一种调质高强度q890d特厚钢板的生产方法 |
CN103695803B (zh) * | 2013-12-19 | 2015-12-30 | 江阴兴澄特种钢铁有限公司 | 低碳当量低温使用的大厚度齿条钢及其制造方法 |
CN103725986B (zh) * | 2013-12-19 | 2015-12-30 | 江阴兴澄特种钢铁有限公司 | 低温下使用的高韧性f级特厚齿条钢板及其制造方法 |
CN103938110B (zh) * | 2014-04-28 | 2016-01-06 | 江苏沙钢集团有限公司 | 海洋工程用fq70级超高强特厚钢板及其制造方法 |
CN104357755A (zh) * | 2014-10-17 | 2015-02-18 | 江阴兴澄特种钢铁有限公司 | 一种适于低温下使用的大厚度、高强度钢板及其制造方法 |
CN104561772B (zh) * | 2014-12-26 | 2017-06-23 | 南阳汉冶特钢有限公司 | 一种130mm~150mm厚度超低温钢板及其的生产方法 |
CN105803325B (zh) * | 2016-04-28 | 2017-10-27 | 江阴兴澄特种钢铁有限公司 | 一种低裂纹敏感性低屈强比特厚钢板及其制备方法 |
-
2016
- 2016-10-18 WO PCT/CN2016/102350 patent/WO2018072076A1/zh unknown
- 2016-10-18 JP JP2019519334A patent/JP6883096B2/ja active Active
- 2016-10-18 US US16/342,917 patent/US11242577B2/en active Active
- 2016-10-18 EP EP16919224.2A patent/EP3505651B1/en active Active
- 2016-10-18 KR KR1020197011309A patent/KR20190057095A/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
WO2018072076A1 (zh) | 2018-04-26 |
KR20190057095A (ko) | 2019-05-27 |
EP3505651B1 (en) | 2023-09-20 |
EP3505651A4 (en) | 2019-10-23 |
JP2020500108A (ja) | 2020-01-09 |
US11242577B2 (en) | 2022-02-08 |
US20200071783A1 (en) | 2020-03-05 |
EP3505651A1 (en) | 2019-07-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6883096B2 (ja) | 連続鋳造鋼片により製造された厚さが最大で177.8mmであるギアラック鋼板及びその製造方法 | |
CN107974638B (zh) | 一种连铸坯制造的厚度达180mm齿条钢板的制造方法 | |
CN105755375B (zh) | 一种连铸坯生产低压缩比高性能特厚钢板及其制造方法 | |
CN103725986B (zh) | 低温下使用的高韧性f级特厚齿条钢板及其制造方法 | |
US9200353B2 (en) | Method for manufacturing an ultra-highstrength steel bar | |
JP5979338B1 (ja) | 材質均一性に優れた厚肉高靭性高張力鋼板およびその製造方法 | |
CN111876662B (zh) | 一种热作模具钢钢板及其制造方法 | |
CN105018862B (zh) | 一种140mm厚度高韧性钢板及其制造方法 | |
CN105039865A (zh) | 一种高强度高韧性钢板及其制造方法 | |
CN104962828A (zh) | 大厚度SA738GrA钢板及其生产方法 | |
JP5945370B2 (ja) | 結晶粒が微細化されたアルミニウム−亜鉛−マグネシウム−銅合金板材の製造方法 | |
JP6284813B2 (ja) | 強冷間加工性と加工後の硬さに優れる熱延鋼板 | |
KR101952818B1 (ko) | 강도 및 연성이 우수한 저합금 강판 및 이의 제조방법 | |
CN110565027A (zh) | 一种具备超高硬度及优良低温韧性的钢板及其生产方法 | |
KR20150042099A (ko) | 알루미늄-아연-구리-마그네슘 합금 판재의 제조방법 및 이에 따라 제조되는 알루미늄-아연-구리-마그네슘 합금 판재 | |
CN115074618A (zh) | 一种低压缩比低温韧性优良的150mm厚FH550级海洋工程钢板及其制备方法 | |
KR101757733B1 (ko) | 결정립이 미세화된 알루미늄-아연-마그네슘-구리 합금 판재의 제조방법 | |
KR20160091863A (ko) | 알루미늄-아연-구리-마그네슘 합금 판재의 제조방법 및 이에 따라 제조되는 알루미늄-아연-구리-마그네슘 합금 판재 | |
CN113528980B (zh) | 模具钢板以及模具钢板的生产方法 | |
CN114892073B (zh) | 一种适用于冷旋压加工的钢板及其制造方法 | |
CN114959488B (zh) | 一种工业纯铁中厚板及其生产方法 | |
KR101758476B1 (ko) | 쌍롤식 박판 주조기를 이용한 고Cu 스테인리스강의 제조방법 및 이에 의해 제조된 고Cu 스테인리스강 | |
TW202030341A (zh) | 沃斯田鐵系鎳基合金板材之製造方法 | |
JP2024012615A (ja) | 厚鋼板の製造方法 | |
CN114774806A (zh) | 一种高强韧轻质钢板及其制备方法和应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20190409 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20200306 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20200317 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A821 Effective date: 20200617 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20201110 |
|
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: 20210413 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20210507 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6883096 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |