KR940005821A - 심인발성이 뛰어난 고강도냉연강판 및 그 제조방법 - Google Patents

심인발성이 뛰어난 고강도냉연강판 및 그 제조방법 Download PDF

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KR940005821A
KR940005821A KR1019930010531A KR930010531A KR940005821A KR 940005821 A KR940005821 A KR 940005821A KR 1019930010531 A KR1019930010531 A KR 1019930010531A KR 930010531 A KR930010531 A KR 930010531A KR 940005821 A KR940005821 A KR 940005821A
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rolling
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high strength
cold rolled
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KR970000406B1 (ko
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사이지 마츠오카
히데타카 가와베
에이코 야스하라
케이 사카타
도시유키 가토
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도사키 시노부
가와사키 세이테츠 가부시키가이샤
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Priority claimed from JP14760792A external-priority patent/JP3301633B2/ja
Priority claimed from JP4147488A external-priority patent/JP3043901B2/ja
Priority claimed from JP4147606A external-priority patent/JP3043902B2/ja
Priority claimed from JP16291292A external-priority patent/JP2948416B2/ja
Priority claimed from JP21919892A external-priority patent/JP2908641B2/ja
Priority claimed from JP00187893A external-priority patent/JP3369619B2/ja
Priority claimed from JP05010858A external-priority patent/JP3142975B2/ja
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    • 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
    • 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
    • C21D8/04—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
    • C21D8/0426—Hot rolling
    • 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C21D8/04—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
    • C21D8/0405—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 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
    • C21D8/04—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
    • 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
    • C21D8/04—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
    • 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
    • C21D8/04—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
    • C21D8/0473—Final recrystallisation annealing

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

본 발명은 심인발성 및 연성이 우수하며 고강도의 냉연강판의 제조방법에 관한 것으로, C;0.01%이하, Si ;0.1∼2.0%, Mn . 0.5∼3.0%, P : 0.02∼0.2%, S;0.05%이하 Al : 0.03∼0.2%, N : 0.01%이하, Nb 0.001∼0.2%. B : 0.0001∼0.008%률, 상기 C, Nb, Al, N, Si, Mn및 P의 각 함유량이 다음식 5Nb/C30, 10≤Al/N80, 16(3×Si/28+200×/31) / (Mn/55) ≤40의 관계를 만족하는 조건으로 함유하는 기본성분조성과 잔부(Fe) 및 불가피적불순물로 이루어지는 강소재에. Ar3변태점이하 500℃이상의 온도역으로 윤활을 실시하면서 합계압하율이 50%이상 95%이하가 되는 압연가공을 실시한 후 감기. 또는 어닐링공정으로 열연관계결정처리를 실시하고, 이어서 압하율 50∼95%의 냉간압연을 실시하고 계속해서 700∼950℃의 온도역으로 재결정어닐링을 실시하는 것을 특징으로 한다.

Description

심인발성이 뛰어난 고강도냉연강판 및 그 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 냉연판의 r값, 인장강도(TS) 및 신장(El)에 미치는 열연온도 및 열인시의 윤활유무의 영향을 조사한 결과를 니타내는 그래프, 제2도는 냉연판의 r값, 인장강도(TS) 및 신장(E1)에 미치는 Nb함유량의 영향을 C와의 원자량비로 조사한 결과를 나타내는 그래프.

Claims (9)

  1. C : 0.01%이하, Si:0.1~2.0%, Mn:0.5-3.0%, P:0.02~0.2%, S:0.05%이하 Al:0.03~0.2% N:0.01%이하, Nb:0.001~0.2%, B:0.0001~0.008%를, 상기 C,Nb,Al,N,Si,Mn 및 P의 각 함유량이 다음식 5Nb/C30, 10Al/N80, 16(3×Si/28+200×/31)/(Mn/55)40의 관계를 만족하는 조건으로 함유하는 기본 성분조성과 잔부(Fe) 및 불가피적불순물로 이루어지는 강소재에, Ar3변태점이하 500℃이상 온도역으로 윤활을 실시하면서 합계압하율이 50%이상 95%이하가 되는 압연가공을 실시한 후 감기, 또는 어닐링공정으로 열연관계결정처리를 실시하고, 이어서 압하율 50~95%의 냉간압엽을 실시하고 계속해서 700~950℃의 온도역으로 재결정어닐링을 실시하는 것을 특징으로 하는 심인발상이 뛰어난 고강도냉연강판의 제조방법.
  2. 제1항에 있어서, 기본성분조정강이 Cu ; 0.1∼1.5%, Ni : 0.1∼1.5%, Mo : 0.01∼1.5%의 1종류, 또는 2종류이상을 함유하는 심인발성이 뛰어난 고강도냉연강판의 제조방법.
  3. 제1항 또는 제2항에 있어서, 기본성분조성강이 Si : 1.0∼2.0%, Mn : 1.5∼3.0%, p 0.05∼0.2%, Nl : 0.1∼1.5%를 함유하는 동시에 2×Si+Mn+20×P +Ni6 2.0≤(2×Si/28+P/31)/(Mn/55+0.5×Ni/59)≤3.5인 관계를 만족하는 것을 특징으로하는 심인발성이 뛰어난 고강도냉연 강관의 제조방법.
  4. 제1항 내지 제3항중 어느 한항에 있어서, 기본성분조성강이 Ti:0.005~0.6%를 함유하는 동시에 48(Ti/48-N/l4-S/32)×PO.0015인 관계를 만족하는 것을 특징으로하는 심인발성이 뛰어난 고강도냉연 강판의 제조방법.
  5. 제1항 내지 제4항중 어느 한항에 있어서, 열연판재결정처리가 가열속도1℃/초, 어닐링온도 : 700~950℃인 것을 특징으로 하는 심인발성이 뛰어난 고강도냉연강판의 제조방법.
  6. 제1항 내지 제4항중 어느 한항에 있어서, 열연판재결정처리가 가열속도 600T900, T×t 3800 어닐링온도:T(℃)/초, 어닐링시간 : t(hr)의 관계를 만족하는 것을 특징으로 하는 심인발성이 뛰어난 고강도냉연강판의 제조방법.
  7. 제5항 내지 제7항중 어느 한항에 있어서, 열간조압연 및 계속되는 열간마무리압연을. 열간조압의 압하율에 대한 열간마무리압연의 압연율의 비가 0.8∼1.2인 동시에 열간조압연의 종료온도가 (Ar3변태점-50℃)이상. (Ar3변태점+100℃)이하. 또한 열간마무리압연이 Ar3변태점이하 500℃이상의 온도역으로 윤활을 실시하면서 합계압하율 50%이상 95%이하로 하는 것을 특징으로하는 심인발성이 뛰어난 고강도냉연강판의 제조방법.
  8. 제5항 내지 제7항중 어느 한항에 있어서, 열간조압연 및 계속되는 열간마무리압연의 압하율의 비가 0.8∼1.2인 동시에 연간조압연의 종료온도가 (Ar3변태점-50℃)이상. (Ar3변태점+100℃)이하. 또는 열간완성압연이 Ar3변태점 이하 500℃이상의 온도역으로 윤활을 실시하면서 합계압하율 50%이상 95%이하로 하는 것을 특징으로하는 심인발성이 뛰어난 고강도냉연강판의 제조방법.
  9. C:0.01%이하. Si:0.1~2.0%, Mn:0.5~3.0%, P:0.02~0.2%, S:0.05이하 Al:0.03~0.2%, N:0.01%이하, Nb:0.001~0.2%, B:0.0001~0.008%를, 상기 C,Nb,Al,N,Si,Mn 및 P의 각 함유량이 다음식 5Nb/C30, 10Al/N80, 16(3×Si/28+200×/31)/(Mn/55)40의 관계를 만족하는 조건으로 함유하는 기본 성분성분과 필요에 따라서 Cu:0.1~1.5%, Ni:0.1~1.5%, Mo:0.001~1.5%의 1종류, 또는 2종류이상을 함유하는 전부(Fe) 및 불가피적불순물로 이루어지고, 또한, 인장강도(TS)가 35Kg/㎟이상인 동시에 랭크포드값(r값)과 TS가 r×TS105인 관계를 만족하는 것을 특징으로 하는 심인발성이 뛰어난 고강도냉연강판.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019930010531A 1992-06-08 1993-06-08 심인발성이 뛰어난 고강냉연강판 및 그 제조방법 KR970000406B1 (ko)

Applications Claiming Priority (15)

Application Number Priority Date Filing Date Title
JP92-147606 1992-06-08
JP14760792A JP3301633B2 (ja) 1992-06-08 1992-06-08 深絞り性に優れた高強度冷延鋼板及び溶融亜鉛めっき鋼板の製造方法
JP92-147488 1992-06-08
JP4147488A JP3043901B2 (ja) 1992-06-08 1992-06-08 深絞り性に優れた高強度冷延鋼板及び亜鉛めっき鋼板の製造方法
JP4147606A JP3043902B2 (ja) 1992-06-08 1992-06-08 深絞り性に優れた高強度冷延鋼板及び溶融亜鉛めっき鋼板の製造方法
JP92-177606 1992-06-08
JP92-147607 1992-06-08
JP92-162912 1992-06-22
JP16291292A JP2948416B2 (ja) 1992-06-22 1992-06-22 深絞り性に優れた高強度冷延鋼板及び溶融亜鉛めっき鋼板
JP92-219198 1992-08-18
JP21919892A JP2908641B2 (ja) 1992-08-18 1992-08-18 深絞り性に優れる薄鋼板の製造方法
JP93-001878 1993-01-08
JP00187893A JP3369619B2 (ja) 1993-01-08 1993-01-08 深絞り性及び延性に優れる高強度冷延鋼板の製造方法及び溶融亜鉛めっき鋼板の製造方法
JP93-010858 1993-01-26
JP05010858A JP3142975B2 (ja) 1993-01-26 1993-01-26 深絞り性に優れた高強度冷延鋼板の製造方法

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KR940005821A true KR940005821A (ko) 1994-03-22
KR970000406B1 KR970000406B1 (ko) 1997-01-09

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US (1) US5360493A (ko)
EP (1) EP0574814B2 (ko)
KR (1) KR970000406B1 (ko)
AU (1) AU652694B2 (ko)
CA (1) CA2097900C (ko)
DE (1) DE69317470T3 (ko)

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EP0574814A3 (en) 1997-01-29
KR970000406B1 (ko) 1997-01-09
DE69317470D1 (de) 1998-04-23
EP0574814A2 (en) 1993-12-22
CA2097900A1 (en) 1993-12-09
EP0574814B2 (en) 2001-11-21
AU4012793A (en) 1993-12-09
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