KR950014346A - High fracture resistant stainless steel sheet and its manufacturing method - Google Patents

High fracture resistant stainless steel sheet and its manufacturing method Download PDF

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KR950014346A
KR950014346A KR1019940004246A KR19940004246A KR950014346A KR 950014346 A KR950014346 A KR 950014346A KR 1019940004246 A KR1019940004246 A KR 1019940004246A KR 19940004246 A KR19940004246 A KR 19940004246A KR 950014346 A KR950014346 A KR 950014346A
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stainless steel
steel sheet
mno
sio
point
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KR1019940004246A
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KR970009091B1 (en
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가쯔히사 야마우찌
히또시 미사오
다다시 이노우에
히로시 다찌바나
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다이라 다다아끼
니홍 고오강 가부시끼가이샤
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Priority claimed from JP5326172A external-priority patent/JPH07150305A/en
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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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • 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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
    • 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
    • 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
    • C21D9/22—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools
    • 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
    • C21D9/24—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for saw blades

Abstract

파쇄저항성 스텐레스 강판은; 스텐레스 강에 불가피하게 잔존하는 “Al2O3-MnO-SiO2”의 3-성분계의 상평형도에서 9개점으로 규정된 영역에 위치하는 조성을 가지며; 스텐레스 강판은 최소한 1520N/mm2(155 kgf/mm2)의 1.0%온세트응력을 가지며; 스텐레스 강판은 196 N/mm2(20kef/mm2)이하의 1.0%온세트 응력의 이방성 차를 가지며; 스텐레스 강판은 적어도 25kgf·mm이상의 편치시험 가공하중을 갖는다. 고 파쇄저항성 스텐레스 강판의 제조방법은: 스텐레스 강 스트립을 준비하며; 스텐레스 강스트립에 어닐링-피클링-제1냉간압연(CR1)-제1중간 어닐링-제2냉간압연(CR2)-제2중간 어닐링-제3냉간압연(CR3)-최종 어닐링-제4냉간압연(CR4)-저온 열처리로 구성되는 일련의 공정을 실시하는 단계로 구성된다.Fracture resistant stainless steel sheet; Has a composition located in the region defined by nine points in the phase equilibrium of the three-component system of “Al 2 O 3 -MnO-SiO 2 ” inevitably remaining in the stainless steel; Stainless steel sheets have a 1.0% onset stress of at least 1520 N / mm 2 (155 kgf / mm 2 ); Stainless steel sheets have an anisotropy difference of 1.0% onset stress of 196 N / mm 2 (20 kef / mm 2 ) or less; Stainless steel sheets have a bias test load of at least 25 kgf · mm. The method for producing high fracture resistant stainless steel sheet includes: preparing a stainless steel strip; Annealing on stainless steel strips-Pickling-First cold rolling (CR 1 )-First intermediate annealing-Second cold rolling (CR 2 )-Second intermediate annealing-Third cold rolling (CR 3 )-Final annealing-agent 4 cold rolling (CR 4 )-consists of performing a series of processes consisting of low temperature heat treatment.

Description

고 파쇄저항성 스텐레스강판 및 그 제조방법High fracture resistant stainless steel sheet and its manufacturing method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 “Al2O3-MnO-SiO2”의 3-성분계의 상평형도에 본 발명의 개재물 조성의 영역을 도시하는 다이어그램.1 is a diagram showing the region of the inclusion composition of the present invention in the phase equilibrium of a three-component system of “Al 2 O 3 —MnO—SiO 2 ”.

제5도는 196N/mm2(155 kgf/mm2)이상 의 1.0% 온세트 응력의 이방성 차의 조건하에서 본 발명의 파쇄특성에 대한 1.0% 온세트응력 및 펀치시험가공의 효과를 도시하는 도면.5 shows the effect of 1.0% onset stress and punch test machining on fracture properties of the present invention under conditions of anisotropic difference of 1.0% onset stress of 196 N / mm 2 (155 kgf / mm 2 ) or greater.

제7도는 본 발명의 파쇄특성에 대한 1.0%온세트 응력 및 마르텐사이트 양의 효과를 도시하는 도면.7 shows the effect of 1.0% onset stress and martensite amount on fracture properties of the present invention.

Claims (18)

스텐레스 강에 불가피하게 잔존하는 Al2O3, MnO, SiO2의 비금속 개재물로 구성되며; 비금속 개재물은 “Al2O3-MnO-SiO2”의 3-성분계의 상평형도에서 중량%로 나타낸 하기의 9개 점으로 한정된 영역에 위치하는 조성을 가지며 점1(Al2O3:21wt./%, MnO:12wt./%, SiO2:67wt./%), 점2(Al2O3:19wt./%, MnO:21wt./%, SiO2:60wt./%),점3(Al2O3:15wt./%, MnO:30wt./%, SiO2:55wt./%), 점4(Al2O3:5wt./%, MnO:46wt./%, SiO2:49wt./%), 점5(Al2O3:5wt./%, MnO:68wt./%, SiO2:27wt./%), 점6(Al2O3:20wt./%, MnO:61wt./%, SiO2:19wt./%), 점7(Al2O3:27.5wt./%, MnO:50wt./%, SiO2:22.5wt./%), 점8(Al2O3:30wt./%, MnO:38wt./%, SiO2:32wt./%), 점9(Al2O3:33wt./%, MnO:27wt./%, SiO2:40wt./%), 상기 스텐레스 강판은 1520N/mm2(155 kgf/mm2)의 1.0% 온세트응력을 가지며, 1.0% 온세트 응력은 강판이 1.0% 변형될 때의 변형응력이며; 상기 스텐레스 강판은 196 N/mm2(20kef/mm2)이하의 1.0%온세트 응력의 이방성 차를 가지며 이방성 차는 압연방향 및 압연방향과 교차하는 방향에서의 1.0% 온세트 응력차의 절대치이며; 상기 스텐레스 강판은 최소한 0.24J(25kgf·mm)의 편치시험 가공하중을 갖는 고 파쇄저항성 스펜레스 강판.Consisting of non-metallic inclusions of Al 2 O 3 , MnO, SiO 2 inevitably remaining in stainless steels; The non-metallic inclusion has a composition located in the region defined by the following nine points expressed in weight percent in the phase equilibrium of the three-component system of “Al 2 O 3 -MnO-SiO 2 ” and the point 1 (Al 2 O 3 : 21 wt. /%, MnO: 12wt ./%, SiO 2 : 67wt ./%), point 2 (Al 2 O 3 : 19wt ./%, MnO: 21wt ./%, SiO 2 : 60wt ./%), point 3 (Al 2 O 3 : 15 wt./%, MnO: 30 wt./%, SiO 2 : 55 wt./%), point 4 (Al 2 O 3 : 5 wt./%, MnO: 46 wt./%, SiO 2 : 49 wt./%), point 5 (Al 2 O 3 : 5 wt./%, MnO: 68 wt./%, SiO 2 : 27 wt./%), point 6 (Al 2 O 3 : 20 wt./%, MnO: 61 wt./%, SiO 2 : 19 wt./%), point 7 (Al 2 O 3 : 27.5 wt./%, MnO: 50 wt./%, SiO 2 : 22.5 wt./%), point 8 (Al 2 O 3 : 30 wt./%, MnO: 38 wt./%, SiO 2 : 32 wt./%), point 9 (Al 2 O 3 : 33 wt./%, MnO: 27 wt./%, SiO 2 : 40 wt./ %), The stainless steel sheet has a 1.0% onset stress of 1520 N / mm 2 (155 kgf / mm 2 ), and the 1.0% onset stress is the strain stress when the steel sheet is 1.0% deformed; The stainless steel sheet has an anisotropic difference of 1.0% onset stress of 196 N / mm 2 (20kef / mm 2 ) or less and the anisotropic difference is an absolute value of 1.0% onset stress difference in the rolling direction and the direction crossing the rolling direction; The stainless steel sheet is a high fracture resistant spence steel sheet having a bias test load of at least 0.24 J (25 kgf · mm). 제1항에 있어서, 상기 스텐레스 강판은:0.01-0.2wt.%, C, 0.1-2wt.% Si, 0.1-2wt.%, Mn, 4-11wt.% Ni 13-2-wt.% Cr, 0.01`0.2wt.% N, 0.0005-0.0025wt.% Sol.Al, 0.002-0.013wt.% 0, 0.08-0.9wt.% Cu 0.009wt.% 이하의 S, 및 Fe 잔여부로 구성되는 고 파쇄저항성 스펜레스 강판.The method of claim 1, wherein the stainless steel sheet is: 0.01-0.2wt.%, C, 0.1-2wt.% Si, 0.1-2wt.%, Mn, 4-11wt.% Ni 13-2-wt.% Cr, High fracture resistance consisting of 0.01`0.2wt.% N, 0.0005-0.0025wt.% Sol.Al, 0.002-0.013wt.% 0, 0.08-0.9wt.% Cu 0.009wt.% Or less S, and Fe residue Spences grater. 제2항에 있어서, 상기 C함량은 0.032-0.177wt.%인 고 파쇄저항성 스텐레스 강판.The high fracture resistance stainless steel sheet according to claim 2, wherein the C content is 0.032-0.177 wt.%. 제2항에 있어서, 상기 Si함량은 0.24-1.90wt.%인 고 파쇄저항성 스텐레스 강판.The high fracture resistance stainless steel sheet according to claim 2, wherein the Si content is 0.24-1.90 wt.%. 제2항에 있어서, 상기 Mn함량은 0.47-1.82wt.%인 고 파쇄저항성 스텐레스 강판.The high fracture resistance stainless steel sheet according to claim 2, wherein the Mn content is 0.47-1.82 wt.%. 제2항에 있어서, 상기 Ni함량은 5.20-8.82wt.%인 고 파쇄저항성 스텐레스 강판.The high fracture resistance stainless steel sheet according to claim 2, wherein the Ni content is 5.20-8.82 wt.%. 제2항에 있어서, 상기 Cr함량은 13.8-18.5wt.%인 고 파쇄저항성 스텐레스 강판.The high fracture resistance stainless steel sheet according to claim 2, wherein the Cr content is 13.8-18.5 wt.%. 제2항에 있어서, 상기 N함량은 0.013-0.191wt.%인 고 파쇄저항성 스텐레스 강판.The high fracture resistance stainless steel sheet according to claim 2, wherein the N content is 0.013-0.191 wt.%. 제2항에 있어서, 상기 So1.A1함량은 0.0006-0.0024wt.%인 고 파쇄저항성 스텐레스 강판.The high fracture resistance stainless steel sheet according to claim 2, wherein the So1.A1 content is 0.0006-0.0024 wt.%. 제2항에 있어서, 상기 O함량은 0.0025-0.0124wt.%인 고 파쇄저항성 스텐레스 강판.The high fracture resistance stainless steel sheet according to claim 2, wherein the O content is 0.0025-0.0124 wt.%. 제2항에 있어서, 상기 Cu함량은 0.11-0.45wt.%인 고 파쇄저항성 스텐레스 강판.The high fracture resistance stainless steel sheet according to claim 2, wherein the Cu content is 0.11-0.45 wt.%. 제1항에 있어서, 상기 비금속 개재물은 13-31wt.% Al2O325-50wt%, MnO 및 31-54wt%, SiO2를 함유하는 고 파쇄저항성 스텐레스 강판.The high fracture resistance stainless steel sheet according to claim 1, wherein the nonmetallic inclusion contains 13-50 wt% Al 2 O 3 25-50 wt%, MnO and 31-54 wt%, SiO 2 . 제1항에 있어서, 상기 스텐레스 강판은 스텐레스 강판의 두께방향으로 40-90% 마르텐사이트를 포함하는 고 파쇄저항성 스텐레스 강판.The stainless steel sheet of claim 1, wherein the stainless steel sheet includes 40-90% martensite in the thickness direction of the stainless steel sheet. 제1항에 있어서, 상기 1.0%온세트 응력은 1520-1960N/mm2(155-200kgf/mm2)인 고 파쇄저항성 스텐레스 강판.The high fracture resistance stainless steel sheet of claim 1, wherein the 1.0% onset stress is 1520-1960 N / mm 2 (155-200 kgf / mm 2 ). 제1항에 있어서, 상기 1.0%온세트 응력의 이방성차는 39.2-176.4N/mm2인 고 파쇄저항성 스텐레스 강판.The high fracture resistance stainless steel sheet according to claim 1, wherein the anisotropy difference of 1.0% onset stress is 39.2-176.4 N / mm 2 . 제1항에 있어서, 상기 펀치시험 가공하중은 0.32-0.67J(33-68kgf·mm)인 고 파쇄저항성 스펜레스 강판.The high fracture resistance spenceless steel sheet according to claim 1, wherein the punch test working load is 0.32-0.67 J (33-68 kgf · mm). 0.01-0.2wt.%, C, 0.1-2wt.% Si, 0.1-2wt.%, Mn, 4-11wt.% Ni 13-2-wt.% Cr, 0.01`0.2wt.% N, 0.0005-0.0025wt.% Sol.Al, 0.002-0.013wt.% 0, 0.08-0.9wt.% Cu 0.009wt.% 이하의 S, 및 Fe 및 불가피한 불순물의 잔여부로 구성되는 스텐레스 강 스트립을 준비하며; 상기 불가피한 불순물은 “Al2O3-MnO-SiO2”의 3-성분계의 상평형도에서 중량%로 나타낸 하기의 9개 점으로 한정된 영역에 위치하는 조성을 갖는 비금속 개재물로서 잔존하며, 점1(Al2O3:21wt./%, MnO:12wt./%, SiO2:67wt./%), 점2(Al2O3:19wt./%, MnO:21wt./%, SiO2:60wt./%),점3(Al2O3:15wt./%, MnO:30wt./%, SiO2:55wt./%), 점4(Al2O3:5wt./%, MnO:46wt./%, SiO2:49wt./%), 점5(Al2O3:5wt./%, MnO:68wt./%, SiO2:27wt./%), 점6(Al2O3:20wt./%, MnO:61wt./%, SiO2:19wt./%), 점7(Al2O3:27.5wt./%, MnO:50wt./%, SiO2:22.5wt./%), 점8(Al2O3:30wt./%, MnO:38wt./%, SiO2:32wt./%), 점9(Al2O3:33wt./%, MnO:27wt./%, SiO2:40wt./%);스텐레스 강 스트립에, 어닐링-피클링-제1냉간압연(CR1)-제1중간 어닐링-제2냉간압연CR2)-제2중간 어닐링-제3냉간압연(CR3)-최종 어닐링-제4냉간압연(CR4)-저온 열처리 공정을 실시하며;상기 제1냉간압연, 상기 제2냉간압연, 및 상기 제3냉간압연의 압하율을 각각 30-60%로 하며; 상기 제4냉간압연의 압하율은 60-76%, 제4냉간압연의 패스당압하율을 3-15%로 하며, 상기 제1어닐링, 제2어닐링 및 최종 어닐링의 어닐링 온도를 각각 950-1150℃로 하며;상기 저온열처리는 0.1-300초 동안 300-600℃의 온도에서 실시되며;상기 최종 어닐링 및저온 열처리는 H270vol.%이상을 함유하는 비산화성 대기에서 실시되는 단계로 구성되는 고 파쇄저항성 스펜레스 강판 제조방법.0.01-0.2wt.%, C, 0.1-2wt.% Si, 0.1-2wt.%, Mn, 4-11wt.% Ni 13-2-wt.% Cr, 0.01`0.2wt.% N, 0.0005-0.0025 preparing a stainless steel strip consisting of wt.% Sol. Al, 0.002-0.013 wt.% 0, 0.08-0.9 wt.% Cu or less, 0.009 wt.% or less S, and the remainder of Fe and unavoidable impurities; The unavoidable impurity remains as a non-metallic inclusion having a composition located in the region defined by the following nine points represented by weight% in the phase equilibrium of the three-component system of “Al 2 O 3 —MnO—SiO 2 ”. Al 2 O 3 : 21 wt./%, MnO: 12 wt./%, SiO 2 : 67 wt./%), point 2 (Al 2 O 3 : 19 wt./%, MnO: 21 wt./%, SiO 2 : 60 wt ./%), point 3 (Al 2 O 3 : 15 wt./%, MnO: 30 wt./%, SiO 2 : 55 wt./%), point 4 (Al 2 O 3 : 5 wt./%, MnO: 46 wt ./%, SiO 2 : 49 wt./%), point 5 (Al 2 O 3 : 5 wt./%, MnO: 68 wt./%, SiO 2 : 27 wt./%), point 6 (Al 2 O 3 : 20 wt./%, MnO: 61 wt./%, SiO 2 : 19 wt./%), point 7 (Al 2 O 3 : 27.5 wt./%, MnO: 50 wt./%, SiO 2 : 22.5 wt./% ), Point 8 (Al 2 O 3 : 30 wt./%, MnO: 38 wt./%, SiO 2 : 32 wt./%), point 9 (Al 2 O 3 : 33 wt./%, MnO: 27 wt./% , SiO 2 : 40 wt./%); on stainless steel strips, annealing-pickling-first cold rolling (CR 1 ) -first intermediate annealing-second cold rolling CR 2 ) -second intermediate annealing-third cold Rolling (CR 3 )-final annealing-fourth cold rolling (CR 4 )-low temperature heat treatment process; the first cold rolling, the second Cold rolling and the rolling reduction rate of the third cold rolling are respectively 30-60%; The fourth cold rolling reduction rate is 60-76%, the fourth cold rolling reduction rate per pass is 3-15%, and the annealing temperatures of the first annealing, the second annealing and the final annealing are 950-1150, respectively. The low temperature heat treatment is carried out at a temperature of 300-600 ° C. for 0.1-300 seconds; The final annealing and low temperature heat treatment is a high temperature consisting of a step carried out in a non-oxidizing atmosphere containing more than 70 vol.% H 2 . Method for producing fracture resistant steel sheet. 제17항에 있어서, 상기 저온 열처리는 400-500℃온도에서 2-15초동안 실시되는 고 파쇄저항성 스펜레스 강판 제조방법.18. The method of claim 17, wherein the low temperature heat treatment is performed at 400-500 ° C. for 2-15 seconds. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940004246A 1993-11-30 1994-03-04 Stainless steel sheet and method for producing thereof KR970009091B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP5326173A JPH07150306A (en) 1993-11-30 1993-11-30 Stainless steel thin sheet for id blade base plate excellent in breaking resistance and manufacture thereof
JP93-326172 1993-11-30
JP5326172A JPH07150305A (en) 1993-11-30 1993-11-30 Stainless steel thin sheet for id blade base plate excellent in breaking resistance and manufacture thereof
JP93-326173 1993-11-30

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KR950014346A true KR950014346A (en) 1995-06-16
KR970009091B1 KR970009091B1 (en) 1997-06-05

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JP5056985B2 (en) * 2009-11-18 2012-10-24 住友金属工業株式会社 Austenitic stainless steel sheet and manufacturing method thereof
JP5853281B2 (en) * 2011-03-25 2016-02-09 日新製鋼株式会社 Austenitic stainless steel sheet with excellent surface gloss
JP6095619B2 (en) * 2014-08-19 2017-03-15 日新製鋼株式会社 Austenitic stainless steel sheet and metal gasket
DE102015102255A1 (en) * 2015-02-17 2016-08-18 Sandvik Materials Technology Deutschland Gmbh Method for producing a strand of stainless steel and strand of stainless steel
JP6694511B2 (en) 2015-12-23 2020-05-13 ポスコＰｏｓｃｏ High-strength cold-rolled steel sheet excellent in ductility, hole workability, and surface treatment characteristics, hot-dip galvanized steel sheet, and methods for producing them

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JPS61295356A (en) * 1985-06-24 1986-12-26 Nisshin Steel Co Ltd High strength stainless steel
JPS62238333A (en) * 1986-04-08 1987-10-19 Nippon Steel Corp Manufacture of ultrathin austenitic stainless steel sheet for water slicer
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CN1103437A (en) 1995-06-07
KR970009091B1 (en) 1997-06-05
DE4406040A1 (en) 1995-06-01
KR970009092B1 (en) 1997-06-05
CN1039724C (en) 1998-09-09
DE4406052A1 (en) 1995-06-01

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