EP0183666A1 - Poudre à base de fer contenant du sulfure de manganèse et son procédé de fabrication - Google Patents

Poudre à base de fer contenant du sulfure de manganèse et son procédé de fabrication Download PDF

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Publication number
EP0183666A1
EP0183666A1 EP85850374A EP85850374A EP0183666A1 EP 0183666 A1 EP0183666 A1 EP 0183666A1 EP 85850374 A EP85850374 A EP 85850374A EP 85850374 A EP85850374 A EP 85850374A EP 0183666 A1 EP0183666 A1 EP 0183666A1
Authority
EP
European Patent Office
Prior art keywords
iron powder
manganese sulphide
powder mixture
manganese
mixture
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.)
Withdrawn
Application number
EP85850374A
Other languages
German (de)
English (en)
Inventor
Ulf Engström
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.)
Hoganas AB
Original Assignee
Hoganas AB
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 Hoganas AB filed Critical Hoganas AB
Publication of EP0183666A1 publication Critical patent/EP0183666A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0264—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements the maximum content of each alloying element not exceeding 5%
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0207—Using a mixture of prealloyed powders or a master alloy
    • C22C33/0221—Using a mixture of prealloyed powders or a master alloy comprising S or a sulfur compound
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements

Definitions

  • the present invention relates to a manganese sulphide-containing iron powder mixture for the production of sintered bodie
  • the invention also relates to a process for producing such a manganese sulphide-containing iron powder mixture.
  • the invention aims at improving the workability of sintered steel without affecting the dimensional change during sintering or deteriorating the strength characteristics of the finished sintered bodies.
  • the finished product may have a design such that it cannot be compacted to final shape, and certain details must therefore be machined after sintering.
  • the machining of sintered bodies normally gives a rough surface, primarily because of the porosity of the sintered material, which means constant chipbreaking for the tool employed as well as jerky tool movements and increased tool wear.
  • the best machinability is obtained with an admixture of 1-1.5% of manganese sulphide powder having a grain size of 30-40 ⁇ m.
  • the machinability of a sintered steel is vastly improved, without affecting the other characteristics, by admixture of a very fine manganese sulphide powder having a grain size of less than 10 ⁇ m.
  • the reason for this aberrant behaviour when using manganese sulphide powder in sintered steel has not been fully explained.
  • One explanation may be the porous structure of the sintered steel.
  • the manganese sulphide is entirely neutral during sintering and then is held only mechanically at the grain boundaries.
  • the manganese sulphide powder acts as an inner lubricant, but it is not inconceivable that it is given a function reminiscent of a ball bearing during machining.
  • Different iron powder mixtures with the additives specified below were compacted at 6 tons/cm 2 and sintered at 1120°C for 30 minutes in an endothermic atmosphere consisting of a mixture of nitrogen gas, hydrogen gas and carbon monoxide gas.
  • the machinability was determined by the drilling method, which involved drilling holes into the samples until the drill had been worn down.
  • the number of drilling holes for each worn-down drill here is a quantity which indicates the workability.
  • the same type of drill was used, i.e. the drills were of the same quality and of the same dimensions.
  • Mixture A An iron powder containing 1.75% Ni, 1.50% Cu, 0.50% Mo and 0.60% C, the balance being Fe.
  • Mixture B Mixture A + 0.50% MnS having a particle size of between 10 ⁇ m and 100 ⁇ m.
  • Mixture C Mixture A + 0.50% MnS having a particle size of less than 10 ⁇ m.
  • Mixture D Mixture A + 0.15% S.
  • the additive according to the present invention has been found to improve substantially the machinability of all tested material mixtures which are based on iron powder and which, without this additive, are difficult to machine.
  • the invention thus is applicable to iron powder mixtures with up to about 7.5% Cu, up to about 10% Ni, up to about 1.5% Mo, up to about 2.5% Mn, up to about 6% Cr, up to about 5% Si, up to about 1.5% P and up to about 1.5% S.
  • some of these additives per se improve the cuttability, the additive according to the present invention always brings an essential improvement of the machinability as regards mixtures for sintered bodies which are not easily worked.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
EP85850374A 1984-11-30 1985-11-21 Poudre à base de fer contenant du sulfure de manganèse et son procédé de fabrication Withdrawn EP0183666A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8406054 1984-11-30
SE8406054A SE445715B (sv) 1984-11-30 1984-11-30 Mangansulfidhaltig jernpulverblandning

Publications (1)

Publication Number Publication Date
EP0183666A1 true EP0183666A1 (fr) 1986-06-04

Family

ID=20357979

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85850374A Withdrawn EP0183666A1 (fr) 1984-11-30 1985-11-21 Poudre à base de fer contenant du sulfure de manganèse et son procédé de fabrication

Country Status (4)

Country Link
EP (1) EP0183666A1 (fr)
JP (1) JPH0645804B2 (fr)
ES (1) ES8701562A1 (fr)
SE (1) SE445715B (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0266936A1 (fr) * 1986-10-29 1988-05-11 Eaton Corporation Ebauche en poudre métallique
WO1991014526A1 (fr) * 1990-03-20 1991-10-03 Höganäs Ab Poudre d'addition pour augmenter l'usinabilite, et poudre de fer ou d'acier renfermant cette poudre
EP0545884A2 (fr) * 1991-12-04 1993-06-09 BÖHLER Edelstahl GmbH Acier ainsi que procédé et installation pour sa préparation
WO1993019875A1 (fr) * 1992-04-01 1993-10-14 Brico Engineering Limited Procede de grillage de materiaux ferreux pouvant etre usines
US5346529A (en) * 1992-03-23 1994-09-13 Tecsyn Pmp, Inc. Powdered metal mixture composition
GB2279665A (en) * 1992-04-01 1995-01-11 Brico Eng A method of sintering machinable ferrous-based materials
EP0648851A1 (fr) * 1993-09-27 1995-04-19 Crucible Materials Corporation Article en poudre d'acier à outils contenant du soufre et son procédé de fabrication
US5522914A (en) * 1993-09-27 1996-06-04 Crucible Materials Corporation Sulfur-containing powder-metallurgy tool steel article
DE19943510C1 (de) * 1999-09-10 2001-01-25 Chemetall Ges Mbh Wien Oberflächenmodifiziertes Mangansulfid, Verfahren zu dessen Herstellung sowie dessen Verwendung
US7045112B2 (en) * 2001-11-30 2006-05-16 Kaya Ama Inc. Method of making manganese sulfide compositions
EP2743361A1 (fr) * 2012-12-14 2014-06-18 Höganäs AB (publ) Nouveau produit et usage correspondant
US8795407B2 (en) 2008-12-22 2014-08-05 Hoganas Ab (Publ) Machinability improving composition
WO2016124532A1 (fr) 2015-02-03 2016-08-11 Höganäs Ab (Publ) Composition de métal en poudre permettant un usinage facile

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4412133B2 (ja) 2004-09-27 2010-02-10 Ｊｆｅスチール株式会社 粉末冶金用鉄基混合粉
JP4640162B2 (ja) * 2005-12-21 2011-03-02 Ｊｆｅスチール株式会社 粉末冶金用鉄基混合粉および鉄基焼結体
CN105377477B (zh) 2013-07-18 2017-11-24 杰富意钢铁株式会社 粉末冶金用混合粉及其制造方法、以及铁基粉末制烧结体的制造方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3856478A (en) * 1971-12-22 1974-12-24 Mitsubishi Motors Corp Fe-Mo-C-{8 Cr{9 {0 SINTERED ALLOYS FOR VALVE SEATS
DE3005513A1 (de) * 1980-02-14 1981-08-20 Schwäbische Hüttenwerke GmbH, 7080 Aalen Sintereisen-formteil und verfahren zur herstellung eines solchen formteils
DE3232001A1 (de) * 1981-08-27 1983-03-31 Toyota Jidosha K.K., Toyota, Aichi Verschleissfeste sinterlegierung, verfahren zu deren herstellung und daraus hergestellte nocke

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE378260B (fr) * 1973-11-29 1975-08-25 Hoeganaes Ab
JPS5819722B2 (ja) * 1974-09-17 1983-04-19 三菱重工業株式会社 コウミツドシヨウケツコウ ノ セイゾウホウホウ
JPS5538018B2 (fr) * 1974-11-15 1980-10-01
SE410984B (sv) * 1975-10-24 1979-11-19 Hoeganaes Ab Fosforhaltigt stalpulver och sett for dess framstellning
JPS5662951A (en) * 1979-10-24 1981-05-29 Hitachi Ltd Sintered iron alloy
JPS57123955A (en) * 1981-01-26 1982-08-02 Mitsubishi Metal Corp Free graphite dispersion type sintered sliding iron material and its manufacture
JPS6037180B2 (ja) * 1981-05-27 1985-08-24 日本国有鉄道 硫化マンガンを含有する鉄系若しくは銅系焼結摺動材料

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3856478A (en) * 1971-12-22 1974-12-24 Mitsubishi Motors Corp Fe-Mo-C-{8 Cr{9 {0 SINTERED ALLOYS FOR VALVE SEATS
DE3005513A1 (de) * 1980-02-14 1981-08-20 Schwäbische Hüttenwerke GmbH, 7080 Aalen Sintereisen-formteil und verfahren zur herstellung eines solchen formteils
DE3232001A1 (de) * 1981-08-27 1983-03-31 Toyota Jidosha K.K., Toyota, Aichi Verschleissfeste sinterlegierung, verfahren zu deren herstellung und daraus hergestellte nocke

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
POWDER METALLURGY, vol. 26, no. 3, 1983, pages 137-144, London, GB; U. ENGSTR\M: "Machinability of sintered steels" *

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0266936A1 (fr) * 1986-10-29 1988-05-11 Eaton Corporation Ebauche en poudre métallique
WO1991014526A1 (fr) * 1990-03-20 1991-10-03 Höganäs Ab Poudre d'addition pour augmenter l'usinabilite, et poudre de fer ou d'acier renfermant cette poudre
EP0545884A2 (fr) * 1991-12-04 1993-06-09 BÖHLER Edelstahl GmbH Acier ainsi que procédé et installation pour sa préparation
EP0545884A3 (en) * 1991-12-04 1995-02-01 Boehler Edelstahl Steel and process and installation for its preparation
US5346529A (en) * 1992-03-23 1994-09-13 Tecsyn Pmp, Inc. Powdered metal mixture composition
US5466414A (en) * 1992-03-23 1995-11-14 Tecsyn, Inc. Process for fabrication of sintered metal components
WO1993019875A1 (fr) * 1992-04-01 1993-10-14 Brico Engineering Limited Procede de grillage de materiaux ferreux pouvant etre usines
GB2279665A (en) * 1992-04-01 1995-01-11 Brico Eng A method of sintering machinable ferrous-based materials
GB2279665B (en) * 1992-04-01 1996-04-10 Brico Eng A method of sintering machinable ferrous-based materials
US5534220A (en) * 1992-04-01 1996-07-09 Brico Engineering Limited Method of sintering machinable ferrous-based materials
EP0648851A1 (fr) * 1993-09-27 1995-04-19 Crucible Materials Corporation Article en poudre d'acier à outils contenant du soufre et son procédé de fabrication
US5522914A (en) * 1993-09-27 1996-06-04 Crucible Materials Corporation Sulfur-containing powder-metallurgy tool steel article
EP0726332A2 (fr) * 1995-02-07 1996-08-14 Crucible Materials Corporation Article en acier à outils contenant du soufre
EP0726332A3 (fr) * 1995-02-07 1998-01-28 Crucible Materials Corporation Article en acier à outils contenant du soufre
DE19943510C1 (de) * 1999-09-10 2001-01-25 Chemetall Ges Mbh Wien Oberflächenmodifiziertes Mangansulfid, Verfahren zu dessen Herstellung sowie dessen Verwendung
WO2001019929A1 (fr) 1999-09-10 2001-03-22 Chemetall Ges.M.B.H. Sulfure manganeux a surface modifiee, son procede de production et son utilisation
EP1137718B1 (fr) * 1999-09-10 2003-12-17 Chemetall Ges.m.b.H. Sulfure manganeux a surface modifiee, son procede de production et son utilisation
US7045112B2 (en) * 2001-11-30 2006-05-16 Kaya Ama Inc. Method of making manganese sulfide compositions
US8795407B2 (en) 2008-12-22 2014-08-05 Hoganas Ab (Publ) Machinability improving composition
US9393617B2 (en) 2008-12-22 2016-07-19 Hoganas Ab (Publ) Machinability improving composition
EP2743361A1 (fr) * 2012-12-14 2014-06-18 Höganäs AB (publ) Nouveau produit et usage correspondant
WO2014090922A3 (fr) * 2012-12-14 2014-08-07 Höganäs Ab (Publ) Nouveau produit et son utilisation
US9957590B2 (en) 2012-12-14 2018-05-01 Höganäs Ab (Publ) Metal powders and use thereof
US10513758B2 (en) 2012-12-14 2019-12-24 Höganäs Ab (Publ) Metal powders and use thereof
WO2016124532A1 (fr) 2015-02-03 2016-08-11 Höganäs Ab (Publ) Composition de métal en poudre permettant un usinage facile
US11512372B2 (en) 2015-02-03 2022-11-29 Höganäs Ab (Publ) Powder metal composition for easy machining

Also Published As

Publication number Publication date
JPS61147801A (ja) 1986-07-05
ES8701562A1 (es) 1986-12-01
ES549415A0 (es) 1986-12-01
SE8406054L (sv) 1986-05-31
JPH0645804B2 (ja) 1994-06-15
SE445715B (sv) 1986-07-14
SE8406054D0 (sv) 1984-11-30

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Inventor name: ENGSTROEM, ULF