TWI456075B - 深擠壓性及鋼卷內材質均勻性優異之高強度冷軋鋼板及其製造方法 - Google Patents

深擠壓性及鋼卷內材質均勻性優異之高強度冷軋鋼板及其製造方法 Download PDF

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TWI456075B
TWI456075B TW101130631A TW101130631A TWI456075B TW I456075 B TWI456075 B TW I456075B TW 101130631 A TW101130631 A TW 101130631A TW 101130631 A TW101130631 A TW 101130631A TW I456075 B TWI456075 B TW I456075B
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rolled steel
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Hideyuki Kimura
Yasunobu Nagataki
Kaneharu Okuda
Kenji Kawamura
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Jfe Steel Corp
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    • C—CHEMISTRY; METALLURGY
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    • 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
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    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
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    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
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    • 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
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
    • C21D8/0436—Cold rolling
    • C—CHEMISTRY; METALLURGY
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    • 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
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0447—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
    • C21D8/0463—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment following hot rolling
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    • 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
    • C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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    • C22C38/00—Ferrous alloys, e.g. steel alloys
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    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • C—CHEMISTRY; METALLURGY
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    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • C—CHEMISTRY; METALLURGY
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    • C21D2211/00—Microstructure comprising significant phases
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    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite

Claims (11)

  1. 一種深擠壓性及鋼卷內材質均勻性優異之高強度冷軋鋼板，其成分組成以質量%計，含有C：0.010~0.060%、Si：超過0.5%且1.5%以下、Mn：1.0~3.0%、P：0.005~0.100%、S：0.010%以下、sol.Al：0.005~0.500%、N：0.0100%以下、Nb：0.010~0.100%、Ti：0.015~0.150%，且滿足下述式(1)、(2)及(3)之關係，剩餘部分包含鐵及不可避免之雜質，組織具有以面積率計為70%以上之肥粒鐵相與3%以上之麻田散鐵相，拉伸強度為440MPa以上，平均r值為1.20以上，(Nb/93)/(C/12)<0.20．．．(1) 0.005≦C*≦0.025．．．(2) (Nb/93+Ti*/48)/(C/12)≧0.150．．．(3)再者，式(1)、(2)及(3)中之元素M表示元素M之含量(質量%)，C*=C-(12/93)Nb-(12/48)Ti*，Ti*=Ti-(48/14)N-(48/32)S，其中，於Ti-(48/14)N-(48/32)S≦0之情況下，設為Ti-(48/14)N-(48/32)S=0。
  2. 如申請專利範圍第1項之深擠壓性及鋼卷內材質均勻性優異之高強度冷軋鋼板，其中，以質量%計，更含有合計超過0%且0.50%以下之選自Mo、Cr及V中之1種或2種以上。
  3. 如申請專利範圍第1或2項之深擠壓性及鋼卷內材質均勻性優異之高強度冷軋鋼板，其中，以質量%計，更含有選自Cu：超過0%且0.30%以下、Ni：超過0%且0.30%以下中之1種或2種。
  4. 如申請專利範圍第1或2項之深擠壓性及鋼卷內材質均勻性優異之高強度冷軋鋼板，其中，以質量%計，更含有選自Sn：超過0%且0.20%以下、Sb：超過0%且0.20%以下中之1種或2種。
  5. 如申請專利範圍第3項之深擠壓性及鋼卷內材質均勻性優異之高強度冷軋鋼板，其中，以質量%計，更含有選自Sn：超過0%且0.20%以下、Sb：超過0%且0.20%以下中之1種或2種。
  6. 如申請專利範圍第1或2項之深擠壓性及鋼卷內材質均勻性優異之高強度冷軋鋼板，其中，以質量%計，更包含Ta：0.01~0.10%，且代替上述式(2)而滿足下述式(4)，0.005≦C*≦0.025．．．(4)此處，C*=C-(12/93)Nb-(12/181)Ta-(12/48)Ti*，Ti*=Ti-(48/14)N-(48/32)S，其中，於Ti-(48/14)N-(48/32)S≦0之情況下，設為Ti-(48/14)N-(48/32)S=0。
  7. 如申請專利範圍第3項之深擠壓性及鋼卷內材質均勻性優異之高強度冷軋鋼板，其中， 以質量%計，更包含Ta：0.01~0.10%，且代替上述式(2)而滿足下述式(4)，0.005≦C*≦0.025．．．(4)此處，C*=C-(12/93)Nb-(12/181)Ta-(12/48)Ti*，Ti*=Ti-(48/14)N-(48/32)S，其中，於Ti-(48/14)N-(48/32)S≦0之情況下，設為Ti-(48/14)N-(48/32)S=0。
  8. 如申請專利範圍第4項之深擠壓性及鋼卷內材質均勻性優異之高強度冷軋鋼板，其中，以質量%計，更包含Ta：0.01~0.10%，且代替上述式(2)而滿足下述式(4)，0.005≦C*≦0.025．．．(4)此處，C*=C-(12/93)Nb-(12/181)Ta-(12/48)Ti*，Ti*=Ti-(48/14)N-(48/32)S，其中，於Ti-(48/14)N-(48/32)S≦0之情況下，設為Ti-(48/14)N-(48/32)S=0。
  9. 如申請專利範圍第5項之深擠壓性及鋼卷內材質均勻性優異之高強度冷軋鋼板，其中，以質量%計，更包含Ta：0.01~0.10%，且代替上述式(2)而滿足下述式(4)，0.005≦C*≦0.025．．．(4)此處，C*=C-(12/93)Nb-(12/181)Ta-(12/48)Ti*，Ti*=Ti-(48/14)N-(48/32)S，其中，於Ti-(48/14)N-(48/32)S≦0之情況下，設為Ti-(48/14)N-(48/32)S=0。
  10. 一種深擠壓性及鋼卷內材質均勻性優異之高強度冷軋鋼板之製造方法，其特徵在於，當將具有申請專利範圍第1至9項中任一項之成分組成之鋼素材進行熱軋、冷軋、退火而製造高強度冷軋鋼板時，於上述熱軋中，將精軋中之最終道次(pass)之軋縮率設為10%以上，將上述最終道次之上一道次之軋縮率設為15%以上，於上述退火步驟中，以平均升溫速度未達3℃/s將700~800℃之溫度範圍加熱至800~900℃之溫度範圍為止，繼而，以平均冷卻速度5℃/s以上冷卻至500℃以下之冷卻停止溫度為止。
  11. 如申請專利範圍第10項之深擠壓性及鋼卷內材質均勻性優異之高強度冷軋鋼板之製造方法，其中，於上述熱軋之精軋結束後，3秒以內開始冷卻，以平均冷卻速度40℃/s以上冷卻至720℃以下為止，於以500~700℃之溫度捲取後，以軋縮率50%以上進行冷軋。
TW101130631A 2011-10-13 2012-08-23 深擠壓性及鋼卷內材質均勻性優異之高強度冷軋鋼板及其製造方法 TWI456075B (zh)

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JP5765116B2 (ja) * 2010-09-29 2015-08-19 Ｊｆｅスチール株式会社 深絞り性および伸びフランジ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
JP5825481B2 (ja) * 2010-11-05 2015-12-02 Ｊｆｅスチール株式会社 深絞り性および焼付硬化性に優れる高強度冷延鋼板とその製造方法
US10697039B2 (en) 2015-01-16 2020-06-30 Jfe Steel Corporation High-strength steel sheet and method for manufacturing the same
US10760142B2 (en) 2015-01-16 2020-09-01 Jfe Steel Corporation High-strength steel sheet and method for manufacturing the same
JP6554397B2 (ja) * 2015-03-31 2019-07-31 株式会社神戸製鋼所 加工性および衝突特性に優れた引張強度が９８０ＭＰａ以上の高強度冷延鋼板、およびその製造方法
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JP6304456B2 (ja) 2016-03-31 2018-04-04 Ｊｆｅスチール株式会社 薄鋼板およびめっき鋼板、並びに、熱延鋼板の製造方法、冷延フルハード鋼板の製造方法、熱処理板の製造方法、薄鋼板の製造方法およびめっき鋼板の製造方法
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KR102162785B1 (ko) * 2016-03-31 2020-10-07 제이에프이 스틸 가부시키가이샤 박 강판 및 도금 강판, 그리고, 열연 강판의 제조 방법, 냉연 풀 하드 강판의 제조 방법, 박 강판의 제조 방법 및 도금 강판의 제조 방법
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