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EP2096186B1 - Automatenstahl mit hervorragender fertigungsfreundlichkeit - Google Patents

Automatenstahl mit hervorragender fertigungsfreundlichkeit Download PDF

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Publication number
EP2096186B1
EP2096186B1 EP07849980A EP07849980A EP2096186B1 EP 2096186 B1 EP2096186 B1 EP 2096186B1 EP 07849980 A EP07849980 A EP 07849980A EP 07849980 A EP07849980 A EP 07849980A EP 2096186 B1 EP2096186 B1 EP 2096186B1
Authority
EP
European Patent Office
Prior art keywords
machinability
amount
steel
mns
mno
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.)
Not-in-force
Application number
EP07849980A
Other languages
English (en)
French (fr)
Other versions
EP2096186A1 (de
EP2096186A4 (de
Inventor
Masayuki Hashimura
Atsushi Mizuno
Kenichiro Miyamoto
Jun Aoki
Seiji Ito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Publication of EP2096186A1 publication Critical patent/EP2096186A1/de
Publication of EP2096186A4 publication Critical patent/EP2096186A4/de
Application granted granted Critical
Publication of EP2096186B1 publication Critical patent/EP2096186B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • 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
    • C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
    • 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
    • C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
    • 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
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur

Definitions

  • Japanese Patent Publication (A) No. 11-222646 proposes the method of introducing 30 or more independent sulfides of 20 ⁇ m or more or groups of sulfides of lengths of a plurality of sulfides connected in substantially straight lines of 20 ⁇ m or more in a 1 mm 2 field of the cross-section in the rolling direction so as to improve the chip evacuation.
  • no allusion is made, including of the method of production, of the dispersion of submicron level sulfides most effective for machinability. Further, this cannot be expected from the ingredients either.
  • the amount of formation of B oxides also increases, the amount of B forming BN is reduced, and the machinability is further degraded. Further, if the Mn forming MnS is reduced, it is no longer possible to fix the S at a high temperature, so a large number of FeS particles are formed and therefore the hot ductility is degraded.
  • Sn makes the ferrite brittle, extends tool life, and improves the surface roughness as an effect. If less than 0.005%, this effect is not recognized, while even if added over 2.0%, the effect becomes saturated, so this was made the upper limit.
  • Ti is a deoxidizing element which can control the amount of oxygen in the steel and can stabilize the yields of the easily oxide forming Mn and B. Further, if slight in amount, it forms soft oxides and acts to improve the machinability. If less than 0.0005%, this effect is nonexistent, while if over 0.1%, a large amount of hard oxides are formed and the Ti becoming solid solute without forming oxides bonds with N to form hard TiN which lowers the machinability. Therefore, the range of the ingredient was made 0.0005 to 0.1%. Ti forms TiN and thereby consumes the N required for forming BN. Therefore, the amount of addition of Ti is preferably 0.01% or less.
  • Sulfides mainly comprised of MnS finely dispersed at a high density make the steel material uniform and thereby reduce the surface relief and enable a good finished surface roughness, so it is possible to express the effect of the sulfides mainly comprised of MnS dispersed at a high density remarkably well. Further, this method can express the quality of the finished surface roughness resulting from the transfer of tool surface relief due to tool wear after a large amount of machining remarkably well, so in this test, the evaluation was performed using the finished surface roughness after machining 800 pieces - which enables evaluation of the difference of machinability in the state where tool wear has progressed. The finished surface roughness was measured by a contact type roughness meter.
  • FIG. 7 is a view showing a balance of finished surface roughness by longitudinal turning and hot ductility in invention examples and comparative examples.
  • the invention examples are good in finished surface roughness and have a hot ductility of a good region cf 80% or more.
  • the finished surface roughness and the hot ductility are both in the poor range or even if the hot ductility is good, the finished surface roughness is poor.
  • machining steel superior in tool life at the time of machining, finished surface roughness, chip evacuation, and other machinability, accompanied with little melt loss of plate refractories of the continuous casting sliding nozzles, and superior in manufacturability with good ductility in hot rolling.

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)
  • Treatment Of Steel In Its Molten State (AREA)
  • Heat Treatment Of Steel (AREA)

Claims (2)

  1. Automatenstahl mit überlegener Verarbeitbarkeit, in Massen% enthaltend
    C: 0,005 bis 0,2 %
    Si: 0,001 bis 0,5 %
    Mn: 0,3 bis 3,0 %
    P: 0,001 bis 0,2 %
    S: 0,30 bis 0,60 %
    B: 0,0003 bis 0,015%
    O: 0,005 bis 0,012%
    Ca: 0.0001 bis 0,0010% und
    Al ≤ 0,01 %,
    gegebenenfalls eines oder mehrere von
    V: 0,05 bis 1,0 %
    Nb: 0,005 bis 0,2 %
    Cr:0,01 bis 2,0 %
    Mo: 0,05 bis 1,0 %
    W: 0,05 bis 1,0 %
    Ni: 0,05 bis 2,0 %
    Cu:0,01 bis 2,0 %
    Sn: 0,005 bis 2,0 %
    Zn: 0,0005 bis 0,5 %
    Ti: 0,0005 bis 0,1 %
    Zr: 0,0005 bis 0,1 %
    Mg: 0,0003 bis 0,005 %
    Te: 0,0003 bis 0,2 %
    Bi: 0,005 bis 0,5 %
    Pb: 0,005 bis 0,5 % und
    mit einem N-Gehalt, der N ≥ 0,0020 % und 1,3xB-0,0100 ≤N≤1,3xB+0,0034 erfüllt, und
    mit einem Rest aus Fe und unvermeidbaren Verunreinigungen, wobei ferner hinsichtlich des MnO im Stahl in einem Querschnitt des Stahlmaterials senkrecht zur Walzrichtung die Fläche des MnO mit einem kreisäquivalenten Durchmesser von 0,5 µm oder mehr 15 % oder weniger der Fläche der gesamten Einschlüsse auf der Basis von Mn beträgt.
  2. Automatenstahl mit überlegener Verarbeitbarkeit gemäß Anspruch 1, wobei, hinsichtlich der überwiegend MnS umfassenden Sulfide in einem Querschnitt des Stahlmaterials senkrecht zur Walzrichtung eine Dichte der Sulfide mit einem kreisäquivalenten Durchmesser von 0,1 bis 0,5 µm 10 000/mm2 oder mehr beträgt.
EP07849980A 2006-11-28 2007-11-27 Automatenstahl mit hervorragender fertigungsfreundlichkeit Not-in-force EP2096186B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006319895 2006-11-28
PCT/JP2007/073277 WO2008066194A1 (fr) 2006-11-28 2007-11-27 Acier de décolletage avec une excellente aptitude à la fabrication

Publications (3)

Publication Number Publication Date
EP2096186A1 EP2096186A1 (de) 2009-09-02
EP2096186A4 EP2096186A4 (de) 2011-07-13
EP2096186B1 true EP2096186B1 (de) 2012-10-24

Family

ID=39467977

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07849980A Not-in-force EP2096186B1 (de) 2006-11-28 2007-11-27 Automatenstahl mit hervorragender fertigungsfreundlichkeit

Country Status (9)

Country Link
US (1) US20100054984A1 (de)
EP (1) EP2096186B1 (de)
JP (1) JP5212111B2 (de)
KR (1) KR101118852B1 (de)
CN (1) CN101573463A (de)
AU (1) AU2007326255B2 (de)
BR (1) BRPI0719310B1 (de)
TW (1) TW200840875A (de)
WO (1) WO2008066194A1 (de)

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US20100092330A1 (en) * 2006-12-28 2010-04-15 Posco Eco-friendly pb-free free cutting steel with excellent machinability and hot workability
KR101018091B1 (ko) 2008-07-09 2011-02-25 주식회사 포스코 구성인선이 적고 표면조도가 우수한 무연 쾌삭강 및 그제조방법
JP5488438B2 (ja) * 2010-04-09 2014-05-14 新日鐵住金株式会社 被削性に優れた電縫鋼管
JP5114689B2 (ja) * 2010-10-06 2013-01-09 新日鐵住金株式会社 肌焼鋼及びその製造方法
CN102607906A (zh) * 2012-02-21 2012-07-25 山东省冶金科学研究院 易切钢sae1215光谱分析用标准样品
MX366958B (es) 2012-03-07 2019-08-01 Nippon Steel Corp Star Plancha de acero para estampado en caliente, metodo para producirla y material de acero para estampado en caliente.
CN105026592B (zh) * 2013-02-18 2016-10-19 新日铁住金株式会社 含铅易切削钢
CN104995324B (zh) * 2013-02-18 2016-08-24 新日铁住金株式会社 含铅易切削钢
CN103255359B (zh) * 2013-04-17 2015-12-02 杭州钢铁集团公司 一种含铋易切削钢
CN103911550A (zh) * 2014-03-24 2014-07-09 北京科技大学 一种热塑性优良的环保型低碳高硫铋易切削钢
CN104313466A (zh) * 2014-10-31 2015-01-28 武汉钢铁(集团)公司 一种低碳微合金化易切削钢
CN104696379B (zh) * 2015-02-10 2017-12-19 山东金马工业集团股份有限公司 节叉产品及其制备方法
WO2016199843A1 (ja) * 2015-06-10 2016-12-15 新日鐵住金株式会社 快削鋼
CN107201482B (zh) * 2017-04-19 2019-01-25 马鞍山市鑫龙特钢有限公司 一种风电用齿轮钢及其制备方法
CN107217162A (zh) * 2017-06-04 2017-09-29 游理淋 一种电磁场作用下制备金属合金的方法
KR102471016B1 (ko) * 2018-06-13 2022-11-28 닛테츠 스테인레스 가부시키가이샤 마르텐사이트계 s쾌삭 스테인리스강
US11074548B2 (en) 2019-12-05 2021-07-27 Coupang Corp. Computer implemented systems and methods for optimization of a product inventory by intelligent distribution of inbound products
CN111876688A (zh) * 2020-08-12 2020-11-03 宝武集团鄂城钢铁有限公司 一种高氮含硫易切削钢的冶炼方法
CN112795848B (zh) * 2021-03-22 2021-06-25 北京科技大学 一种易切削耐腐蚀钢及其制备方法
CN113913704B (zh) * 2021-12-13 2022-03-11 北京科技大学 碲-硫协同处理的铝脱氧钢及其制备方法和应用
CN116949353B (zh) * 2023-06-02 2024-05-17 江阴兴澄特种钢铁有限公司 一种含Bi易切削非调质汽车发动机曲轴用钢及其制造方法

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Also Published As

Publication number Publication date
BRPI0719310A2 (pt) 2014-07-15
TWI363804B (de) 2012-05-11
TW200840875A (en) 2008-10-16
AU2007326255A1 (en) 2008-06-05
CN101573463A (zh) 2009-11-04
EP2096186A1 (de) 2009-09-02
AU2007326255B2 (en) 2010-06-24
US20100054984A1 (en) 2010-03-04
WO2008066194A1 (fr) 2008-06-05
JPWO2008066194A1 (ja) 2010-03-11
KR20090055648A (ko) 2009-06-02
EP2096186A4 (de) 2011-07-13
KR101118852B1 (ko) 2012-03-16
BRPI0719310B1 (pt) 2018-01-23
JP5212111B2 (ja) 2013-06-19

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