TW200738892A - Low-carbon resulfurized free-machining steel excellent in machinability - Google Patents

Low-carbon resulfurized free-machining steel excellent in machinability

Info

Publication number
TW200738892A
TW200738892A TW095145464A TW95145464A TW200738892A TW 200738892 A TW200738892 A TW 200738892A TW 095145464 A TW095145464 A TW 095145464A TW 95145464 A TW95145464 A TW 95145464A TW 200738892 A TW200738892 A TW 200738892A
Authority
TW
Taiwan
Prior art keywords
mass
machinability
low
carbon
content
Prior art date
Application number
TW095145464A
Other languages
Chinese (zh)
Other versions
TWI326714B (en
Inventor
Koichi Sakamoto
Atsuhiko Yoshida
Original Assignee
Kobe Steel Ltd
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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Publication of TW200738892A publication Critical patent/TW200738892A/en
Application granted granted Critical
Publication of TWI326714B publication Critical patent/TWI326714B/en

Links

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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • 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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/114—Treating the molten metal by using agitating or vibrating means
    • B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields
    • 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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Continuous Casting (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

A low-carbon resulfurized free-machining steel is excellent in machinability and contains 0.02% to 0.15% by mass of C; 0.004% by mass or less (exclusive of 0%) of Si; 0.6% to 3% by mass of Mn; 0.02% to 0.2% by mass of P; 0.35% to 1% by mass of S; 0.005% by mass or less (exclusive of 0% by mass) of Al; 0.008% to 0.03% by mass of O; and 0.007% to 0.03% by mass of N, with the remainder being iron and inevitable impurities, in which the ratio [Mn]/[S] of the manganese content [Mn] to the sulfur content [S] is within the range of 3 to 4, and the carbon content [C], the manganese content [Mn] and the nitrogen content [N] satisfy the following Expression (1): 10[C]x[Mn]<SP>-0.94</SP>+1226[N]<SP>2</SP> ≤ 1.2, wherein [C], [Mn] and [N] represent the contents on the percent by mass basis of carbon, manganese, and nitrogen, respectively.
TW095145464A 2005-12-16 2006-12-06 Low-carbon resulfurized free-machining steel excellent in machinability TWI326714B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005363816A JP4203068B2 (en) 2005-12-16 2005-12-16 Low-carbon sulfur free-cutting steel with excellent machinability

Publications (2)

Publication Number Publication Date
TW200738892A true TW200738892A (en) 2007-10-16
TWI326714B TWI326714B (en) 2010-07-01

Family

ID=38162701

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095145464A TWI326714B (en) 2005-12-16 2006-12-06 Low-carbon resulfurized free-machining steel excellent in machinability

Country Status (7)

Country Link
US (2) US20090169414A1 (en)
EP (1) EP1964939B1 (en)
JP (1) JP4203068B2 (en)
KR (1) KR101033073B1 (en)
CN (1) CN101331242A (en)
TW (1) TWI326714B (en)
WO (1) WO2007069386A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009106967A (en) * 2007-10-30 2009-05-21 Sumitomo Metal Ind Ltd Continuous casting method for steel
KR101253806B1 (en) * 2009-07-01 2013-04-12 주식회사 포스코 High sulfur free cutting steel having excellent machinability and method for manufacturing the same
HUP1300336A2 (en) * 2013-05-27 2014-11-28 Astra Mining Hungary Kft Method for production of steel microalloyed with super clean sulfur and controlled sulfur addition affecting metalurgical characteristics
CN104451458B (en) * 2014-12-01 2016-09-28 杭州钢铁集团公司 A kind of automatic steel and production method thereof and the application in manufacturing key
CN115386800B (en) * 2022-08-30 2023-10-20 鞍钢股份有限公司 Low-carbon high-manganese-sulfur environment-friendly free-cutting steel and manufacturing method thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2922105B2 (en) * 1993-12-21 1999-07-19 新日本製鐵株式会社 Low-carbon sulfur-based free-cutting steel with excellent machinability
JPH10158781A (en) * 1996-12-02 1998-06-16 Kobe Steel Ltd Free cutting steel excellent in cemented carbide tool life
JP3687370B2 (en) * 1998-11-25 2005-08-24 住友金属工業株式会社 Free-cutting steel
US7488396B2 (en) * 2002-11-15 2009-02-10 Nippon Steel Corporation Superior in machinability and method of production of same
JP4034700B2 (en) * 2003-06-30 2008-01-16 株式会社神戸製鋼所 Manufacturing method of high S free cutting steel with excellent machinability and high S free cutting steel
JP4441360B2 (en) * 2003-12-01 2010-03-31 株式会社神戸製鋼所 Low carbon composite free-cutting steel with excellent finish surface roughness

Also Published As

Publication number Publication date
TWI326714B (en) 2010-07-01
EP1964939A1 (en) 2008-09-03
JP2007162119A (en) 2007-06-28
US20090169414A1 (en) 2009-07-02
EP1964939B1 (en) 2018-05-16
KR20080068750A (en) 2008-07-23
US20120121454A1 (en) 2012-05-17
CN101331242A (en) 2008-12-24
JP4203068B2 (en) 2008-12-24
EP1964939A4 (en) 2009-11-18
KR101033073B1 (en) 2011-05-06
WO2007069386A1 (en) 2007-06-21

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees