AR017636A1 - Composicion de acero de maquinado libre, proceso para obtenerla y acero obtenido - Google Patents

Composicion de acero de maquinado libre, proceso para obtenerla y acero obtenido

Info

Publication number
AR017636A1
AR017636A1 ARP980105817A ARP980105817A AR017636A1 AR 017636 A1 AR017636 A1 AR 017636A1 AR P980105817 A ARP980105817 A AR P980105817A AR P980105817 A ARP980105817 A AR P980105817A AR 017636 A1 AR017636 A1 AR 017636A1
Authority
AR
Argentina
Prior art keywords
steel
machinability
free machining
ferrite grains
around
Prior art date
Application number
ARP980105817A
Other languages
English (en)
Original Assignee
Univ Pittsburgh
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 Univ Pittsburgh filed Critical Univ Pittsburgh
Publication of AR017636A1 publication Critical patent/AR017636A1/es

Links

Classifications

    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/84—Controlled slow cooling
    • 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
    • C22C38/008—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
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • 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
    • 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
    • C21D2261/00—Machining or cutting being involved
    • 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
    • C21D6/02—Hardening by precipitation

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

Abstract

Una composicion de acero de maquinado libre, proceso para obtenerla y acero obtenido, donde el acero de maquinado libre no se vale del plomo paraaumentar la maquinabilidad. En su lugar, los aceros de la invencion emplean concentraciones de estanoalr ededor de los granos de ferrita para duplicarel papel que cumple el plomo, que descubrieron los inventores, en el aumento de la maquinabilidad. Este rol va a provocar una fragilizacion en lastemperaturas de la zona de corte localizadas cambiandoel m odo de rotura de transgranular a intergranular a esas temperaturas. El uso que hace la invencionde concentraciones de estano alrededor de los granos de ferrita del acero permite obtener el efecto de aumentar la maquinabilidad mientras se empleaelcon tenido volumétrico de estano por debajo de los niveles en los cuales el resquebrajamiento en caliente se vuelve problemático. La invencion mejora los acerosplomíferos de maquinado libre en el sentido de que la fragilizacion del aumento de lamaquinab ilidad producida al concentrar estano alrededor de losgranos de ferrita es tanto controlable como reversible.
ARP980105817A 1997-11-17 1998-11-17 Composicion de acero de maquinado libre, proceso para obtenerla y acero obtenido AR017636A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/972,154 US5961747A (en) 1997-11-17 1997-11-17 Tin-bearing free-machining steel

Publications (1)

Publication Number Publication Date
AR017636A1 true AR017636A1 (es) 2001-09-12

Family

ID=25519254

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP980105817A AR017636A1 (es) 1997-11-17 1998-11-17 Composicion de acero de maquinado libre, proceso para obtenerla y acero obtenido

Country Status (13)

Country Link
US (1) US5961747A (es)
EP (1) EP1040208B1 (es)
JP (1) JP2001523766A (es)
AR (1) AR017636A1 (es)
AT (1) ATE261001T1 (es)
AU (1) AU2243399A (es)
BR (1) BR9814194A (es)
CA (1) CA2308794C (es)
DE (1) DE69822207T2 (es)
ES (1) ES2213928T3 (es)
TW (1) TW436528B (es)
WO (1) WO1999025891A1 (es)
ZA (1) ZA9810464B (es)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6200395B1 (en) * 1997-11-17 2001-03-13 University Of Pittsburgh - Of The Commonwealth System Of Higher Education Free-machining steels containing tin antimony and/or arsenic
CN1169992C (zh) * 2001-11-15 2004-10-06 住友金属工业株式会社 机械结构用钢
DE102007038662A1 (de) * 2007-08-15 2009-02-19 Rheinmetall Waffe Munition Gmbh Fertigungsverfahren und Stahl für schwere Munitionshüllen
DE102009052036A1 (de) 2009-11-05 2011-05-12 Buderus Edelstahl Band Gmbh Bleifreier Automatenstahl
CN106103769B (zh) * 2014-12-18 2017-10-24 新日铁住金株式会社 钢材、使用该钢材的船舶的压载舱和船舱、以及具备该压载舱或船舱的船舶
TWI663266B (zh) * 2017-02-28 2019-06-21 日商杰富意鋼鐵股份有限公司 切削加工用線材
KR102034429B1 (ko) 2017-11-30 2019-10-18 주식회사 포스코 강재 및 그 제조방법
KR102103382B1 (ko) 2018-10-29 2020-04-22 주식회사 포스코 강재 및 그 제조방법
CN115747619B (zh) * 2022-10-20 2024-05-10 成都先进金属材料产业技术研究院股份有限公司 一种含锡易切削钢的制备方法及含锡易切削钢

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5133716A (en) * 1974-09-17 1976-03-23 Daido Steel Co Ltd * teitansokarushiumu iokeikaisakuko *
JPS558474A (en) * 1978-07-04 1980-01-22 Kobe Steel Ltd Non-magnetic high manganese steel excellent in weldability and machinability
JPS5585658A (en) * 1978-12-25 1980-06-27 Daido Steel Co Ltd Free cutting steel
US4255188A (en) * 1979-08-29 1981-03-10 Inland Steel Company Free machining steel with bismuth and manganese sulfide
US4247326A (en) * 1979-08-29 1981-01-27 Inland Steel Company Free machining steel with bismuth
US4255187A (en) * 1979-08-29 1981-03-10 Inland Steel Company Bismuth-containing steel
JPS5684448A (en) * 1979-12-13 1981-07-09 Kobe Steel Ltd Low-carbon sn-containing free cutting steel
NO146959C (no) * 1980-07-07 1984-05-08 Raufoss Ammunisjonsfabrikker Austenitisk slitebestandig staal
JPS58151453A (ja) * 1982-01-27 1983-09-08 Nippon Steel Corp 鉄損が低くかつ磁束密度のすぐれた無方向性電磁鋼板およびその製造法
US4806304A (en) * 1983-05-09 1989-02-21 Daido Tokushuko Kabushiki Kaisha Free cutting steel
JPS6223970A (ja) * 1985-07-24 1987-01-31 Nippon Steel Corp 連続鋳造による低炭素硫黄−鉛快削鋼
US4880479A (en) * 1986-06-10 1989-11-14 Stanadyne, Inc. Cold drawn free-machining resulfurized and rephosphorized steel bars having controlled mechanical properties and controlled machinability
US4786466A (en) * 1987-02-19 1988-11-22 Frema, Inc. Low-sulfur, lead-free free machining steel alloy
JP2885905B2 (ja) * 1990-08-10 1999-04-26 大同特殊鋼株式会社 高強度非調質快削鋼
JP2573118B2 (ja) * 1990-11-21 1997-01-22 新日本製鐵株式会社 被削性の優れた機械構造用電気抵抗溶接鋼管
JP3314833B2 (ja) * 1993-10-18 2002-08-19 新日本製鐵株式会社 加工性の優れた冷延鋼板及びその製造方法

Also Published As

Publication number Publication date
JP2001523766A (ja) 2001-11-27
DE69822207D1 (de) 2004-04-08
ES2213928T3 (es) 2004-09-01
DE69822207T2 (de) 2005-01-20
WO1999025891A1 (en) 1999-05-27
TW436528B (en) 2001-05-28
ATE261001T1 (de) 2004-03-15
EP1040208B1 (en) 2004-03-03
EP1040208A1 (en) 2000-10-04
BR9814194A (pt) 2000-09-26
US5961747A (en) 1999-10-05
AU2243399A (en) 1999-06-07
CA2308794A1 (en) 1999-05-27
EP1040208A4 (en) 2000-11-29
ZA9810464B (en) 1999-05-21
CA2308794C (en) 2008-02-19

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