EP0018445A1 - Procédé pour la fabrication de pièces coulée en fonte nodulaire - Google Patents

Procédé pour la fabrication de pièces coulée en fonte nodulaire Download PDF

Info

Publication number: EP0018445A1
Authority: EP; European Patent Office
Prior art keywords: temperature; minutes; cast iron; possibly; casting
Prior art date: 1978-12-13
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.): Granted

Application number

EP79200725A

Other languages

German (de)

English (en)

Other versions

EP0018445B1 (fr

EP0018445B2 (fr

Inventor

Horst Dr. Mühlberger

Bruno Dr. Prinz

Wolf Dr. Wunder

Ulrich Dipl.-Ing. Schäfer

Josef Ing. Bognar

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.)

Muehlberger Horst Dr

Original Assignee

Individual

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.)

1978-12-13

Filing date

1979-12-05

Publication date

1980-11-12

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6057078&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0018445(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1979-12-05 Application filed by Individual filed Critical Individual

1980-11-12 Publication of EP0018445A1 publication Critical patent/EP0018445A1/fr

1984-06-06 Publication of EP0018445B1 publication Critical patent/EP0018445B1/fr

1990-01-03 Application granted granted Critical

1990-01-03 Publication of EP0018445B2 publication Critical patent/EP0018445B2/fr

1999-12-05 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

238000005266 casting Methods 0.000 title claims abstract description 13
229910001141 Ductile iron Inorganic materials 0.000 title claims description 9
238000004519 manufacturing process Methods 0.000 title claims description 5
238000000034 method Methods 0.000 title abstract description 4
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
229910001018 Cast iron Inorganic materials 0.000 claims abstract description 10
PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 10
229910052799 carbon Inorganic materials 0.000 claims abstract description 8
ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 6
229910052750 molybdenum Inorganic materials 0.000 claims abstract description 6
239000011733 molybdenum Substances 0.000 claims abstract description 6
RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 5
XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 5
229910052802 copper Inorganic materials 0.000 claims abstract description 5
239000010949 copper Substances 0.000 claims abstract description 5
229910052759 nickel Inorganic materials 0.000 claims abstract description 5
229910052710 silicon Inorganic materials 0.000 claims abstract description 5
239000010703 silicon Substances 0.000 claims abstract description 5
PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
238000001816 cooling Methods 0.000 claims description 3
238000010438 heat treatment Methods 0.000 claims description 3
229910052748 manganese Inorganic materials 0.000 claims description 3
239000011572 manganese Substances 0.000 claims description 3
238000007792 addition Methods 0.000 claims 1
229910001563 bainite Inorganic materials 0.000 abstract description 5
229910002804 graphite Inorganic materials 0.000 abstract description 5
239000010439 graphite Substances 0.000 abstract description 5
FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract description 3
OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 3
NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 3
229910052749 magnesium Inorganic materials 0.000 abstract description 3
239000011777 magnesium Substances 0.000 abstract description 3
WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 abstract description 3
229910052698 phosphorus Inorganic materials 0.000 abstract description 3
239000011574 phosphorus Substances 0.000 abstract description 3
239000000155 melt Substances 0.000 abstract 2
239000005864 Sulphur Substances 0.000 abstract 1
238000006243 chemical reaction Methods 0.000 description 3
230000008878 coupling Effects 0.000 description 3
238000010168 coupling process Methods 0.000 description 3
238000005859 coupling reaction Methods 0.000 description 3
239000000463 material Substances 0.000 description 3
229910001566 austenite Inorganic materials 0.000 description 2
229910052717 sulfur Inorganic materials 0.000 description 2
239000011593 sulfur Substances 0.000 description 2
VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
229910000831 Steel Inorganic materials 0.000 description 1
239000000654 additive Substances 0.000 description 1
230000000996 additive effect Effects 0.000 description 1
229910052804 chromium Inorganic materials 0.000 description 1
239000011651 chromium Substances 0.000 description 1
239000004035 construction material Substances 0.000 description 1
230000002349 favourable effect Effects 0.000 description 1
230000001771 impaired effect Effects 0.000 description 1
239000010985 leather Substances 0.000 description 1
239000011159 matrix material Substances 0.000 description 1
238000001000 micrograph Methods 0.000 description 1
239000000203 mixture Substances 0.000 description 1
229910001562 pearlite Inorganic materials 0.000 description 1
230000002028 premature Effects 0.000 description 1
239000010959 steel Substances 0.000 description 1
230000007704 transition Effects 0.000 description 1

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
- C21D5/00—Heat treatments of cast-iron
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/04—Cast-iron alloys containing spheroidal graphite

Definitions

the invention relates to a spheroidal graphite cast iron produced by a corresponding heat treatment and cooling and having an austenitic-bainitic mixed structure and a process for the production thereof.
a spheroidal graphite cast iron with such basic structures and their mechanical properties is, apart from the usual areas of application, also suitable as a construction material for areas in which, until now, only tempered steels have been used, e.g. Crankshafts for motor vehicle engines, segment shafts and pistons for hydraulic steering systems, kingpins for truck fifth wheel couplings, cardan shaft heads for motor vehicle cardan shafts, coupling bodies for trailer couplings.
spheroidal graphite cast iron grades with a bainitic structure have long been known and used as high-strength and wear-resistant materials.
the castings are generally heated to an austenitizing temperature of 920 to 950 ° C. during manufacture and held there for 2 to 5 hours until the matrix has reached an approximately uniform carbon content and any leather burit present has been dissolved after casting.
the castings are then cooled so quickly that premature austenite conversion to pearlite is avoided before the isothermal bainite transition temperature is reached.
the casting is kept at this temperature until the bainite reaction has ended. Thereafter, as usual, the mixture is cooled to room temperature (Foundry 65 (1978) No. 4, pages 73 to 80).
From DE-OS 23 34 992 is also a weakly alloyed cast iron with spheroidal graphite with the conventional amounts of carbon, silicon, phosphorus, sulfur and magnesium and a molybdenum addition of 0.10 to 0.26% and a manganese addition of 0.3 to 1.4% known.
the resulting casting is heated to an austenitizing temperature of 900 ° C and after a holding time cooled for two hours in a bath of 300 ° C in 10 minutes to 4 hours.
an austenitic-bainitic structure can be set which has a tensile strength of 1100 N / mm 2 , an elongation at break of 10% and a hardness of 270 to 300 HB.
the solution to this problem consists in a spheroidal graphite cast iron which, according to the invention, in addition to the usual amounts of carbon, silicon, phosphorus, sulfur and magnesium as an additive, also> 0 to ⁇ 0.3%, but preferably 0.01 to 0.25%, Contains manganese.
This cast iron with spheroidal graphite is suitable for producing an austenitic-bainitic structure, wherein according to the invention the casting to an austenitizing temperature 800-860 ° C, preferably 820-830 o C, heated at this temperature for 10 to 60 minutes, preferably 10 to 25 minutes , and is then rapidly cooled to a temperature of 350 to 400 ° C, preferably 375 ° C, in less than 2 minutes and held at this temperature for about 5 to 60 minutes, preferably 20 to 25 minutes. It is then cooled to room temperature.
an austenitizing temperature 800-860 ° C, preferably 820-830 o C heated at this temperature for 10 to 60 minutes, preferably 10 to 25 minutes , and is then rapidly cooled to a temperature of 350 to 400 ° C, preferably 375 ° C, in less than 2 minutes and held at this temperature for about 5 to 60 minutes, preferably 20 to 25 minutes. It is then cooled to room temperature.
the spheroidal graphite cast iron can also be used individually or in groups of> 0 to 3% nickel, 0.2 to 0.8%, preferably 0.25 to 0.4% molybdenum and 0.1 to 1.5%, preferably 0.4 up to 0.6%, copper included.
the carbon content is 2.5 to 3.7%, preferably 3.0 to 3.2% and the silicon content is 2.0 to 3.0%, preferably 2.2 to 2.6%.
the drawing shows the photographic representation of a micrograph of the cast iron type according to the invention with spheroidal graphite with a bainitic-austenitic structure with embedded spherolites, the dark needles representing bainite and the light structural components austenite.

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)
Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Heat Treatment Of Articles (AREA)

EP79200725A 1978-12-13 1979-12-05 Procédé pour la fabrication de pièces coulée en fonte nodulaire Expired - Lifetime EP0018445B2 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE2853870		1978-12-13
DE19782853870 DE2853870A1 (de)	1978-12-13	1978-12-13	Gusseisen mit kugelgraphit mit austenitisch-bainitischem mischgefuege

Publications (3)

Publication Number	Publication Date
EP0018445A1 true EP0018445A1 (fr)	1980-11-12
EP0018445B1 EP0018445B1 (fr)	1984-06-06
EP0018445B2 EP0018445B2 (fr)	1990-01-03

Family

ID=6057078

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP79200725A Expired - Lifetime EP0018445B2 (fr)	1978-12-13	1979-12-05	Procédé pour la fabrication de pièces coulée en fonte nodulaire

Country Status (4)

Country	Link
EP (1)	EP0018445B2 (fr)
JP (1)	JPS5910988B2 (fr)
DE (2)	DE2853870A1 (fr)
ZA (1)	ZA796750B (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1983001959A1 (fr) *	1981-12-03	1983-06-09	Hauke, Wilhelm	Procede pour le durcissement bainitique au moins partiel de façon isothermique d'une piece en fonte
FR2522291A1 (fr) *	1982-03-01	1983-09-02	Pont A Mousson	Tube centrifuge en fonte a graphite spheroidal et son procede de fabrication
EP0144907A3 (fr) *	1983-12-05	1986-11-05	Nissan Motor Co., Ltd.	Procédé pour la fabrication de pièces de fonte à graphite sphéroidal par trempe bainitique
EP0203050A1 (fr) *	1985-05-22	1986-11-26	Ab Volvo	Procédé de fabrication d'une fonte à graphite spréroidal, trempée et bainitique
EP0347568A3 (fr) *	1988-06-23	1991-04-03	MAHLE-J. WIZEMANN GmbH & Co. KG	Procédé de fabrication de pièces coulées résistantes à l'usure
EP0639651A1 (fr) *	1993-08-18	1995-02-22	Centre Technique Des Industries De La Fonderie	Procédé de traitement intercritique de charges en fonte
FR2712606A1 (fr) *	1993-11-19	1995-05-24	Tech Ind Fonderie Centre	Procédé d'élaboration d'une charge de fonte à graphite sphéroïdal à caractéristiques mécaniques élevées.
EP1344839A1 (fr) *	2002-01-18	2003-09-17	Ing.Firman Allan Persson HAB	Fonte nodulaire alliee
EP1384794A1 (fr) *	2002-07-26	2004-01-28	Erre-Vis S.p.A.	Fonte nodulaire pour segments de piston et procédé pour la fabrication de ladite fonte
WO2004022792A3 (fr) *	2002-09-04	2004-06-17	Intermet Corp	Article en fonte douce, fabrique par trempe etagee bainitique et ameliore en termes d'usinabilite, de resistance a la fatigue et a la fissuration en milieu corrosif, et procede de fabrication associe
DE102008050152A1 (de)	2008-10-01	2010-04-08	Claas Guss Gmbh	Hochfeste, duktile Gusseisenlegierung mit Kugelgraphit sowie Verfahren zu deren Herstellung
ITMI20110141A1 (it) *	2011-02-02	2012-08-03	Fonderia Anselmi S P A	Manufatti in ferrolega

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS6024318A (ja) *	1983-02-25	1985-02-07	Hitachi Metals Ltd	球状黒鉛鋳鉄の製造法
JPS59157221A (ja) *	1983-02-25	1984-09-06	Hitachi Metals Ltd	球状黒鉛鋳鉄の製造法
US4619713A (en) *	1983-02-25	1986-10-28	Hitachi Metals, Ltd.	Method of producing nodular graphite cast iron
US4744211A (en) *	1984-01-06	1988-05-17	Hitachi Metals, Ltd.	Detachable chain and method of producing the same
US4596606A (en) *	1984-09-04	1986-06-24	Ford Motor Company	Method of making CG iron
JPS61136657A (ja) *	1984-12-05	1986-06-24	Ngk Insulators Ltd	プラスチツク成形用鋳造金型
JPS61264155A (ja) *	1985-01-30	1986-11-22	Asahi Malleable Iron Co Ltd	ベ−ナイト基地球状黒鉛鋳鉄およびその製法
JPS61264156A (ja) *	1985-01-30	1986-11-22	Asahi Malleable Iron Co Ltd	ベ−ナイト基地球状黒鉛鋳鉄およびその製法
JPS6227547A (ja) *	1985-07-30	1987-02-05	Hitachi Metals Ltd	コイルばねとその製造法
US4737199A (en) *	1985-12-23	1988-04-12	Ford Motor Company	Machinable ductile or semiductile cast iron and method
JPS62214123A (ja) *	1986-03-17	1987-09-19	Kubota Ltd	高強度ダクタイル鋳鉄の製造方法
JPS63227744A (ja) *	1987-03-17	1988-09-22	Mazda Motor Corp	球状黒鉛鋳鉄鋳物およびその製造法
US5028281A (en) *	1988-06-14	1991-07-02	Textron, Inc.	Camshaft
US4880477A (en) *	1988-06-14	1989-11-14	Textron, Inc.	Process of making an austempered ductile iron article
JPH04333369A (ja) *	1991-05-07	1992-11-20	Hitachi Zosen Corp	構造物における柱の溶接装置
ES2048656B1 (es) *	1992-07-09	1994-10-16	Frenos Electricos Unidos Sa	Rotores inducidos de ralentizadores electromagneticos fabricados con fundiciones nodulares ferriticas.
DE10344073A1 (de) *	2003-09-23	2005-04-28	Daimler Chrysler Ag	Kurbelwelle mit kombiniertem Antriebszahnrad sowie Verfahren zu ihrer Herstellung und deren Verwendung
US20200131606A1 (en) *	2018-10-30	2020-04-30	GM Global Technology Operations LLC	High-strength nodular iron with good weldability and machinability

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1054102B (de) *	1955-07-08	1959-04-02	Teves Kg Alfred	Verfahren zum Herstellen eines Gusseisens mit nadelfoermigem Zwischenstufengefuege
DE1123353B (de) *	1957-03-14	1962-02-08	Teves Kg Alfred	Verfahren zur Herstellung von gusseisernen Kolbenringen
FR1591761A (fr) *	1967-11-14	1970-05-04
DE2334992A1 (de) *	1972-07-12	1974-02-07	Kymin Oy Kymmene Ab	Legiertes gusseisen mit kugelgraphit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR89010E (fr) *		1967-07-19
US2485760A (en) *	1947-03-22	1949-10-25	Int Nickel Co	Cast ferrous alloy
FR1286077A (fr) *	1961-01-20	1962-03-02	Renault	Acier et traitement pour l'obtention de pièces à coefficient de dilatation thermique élevé
FI56699C (fi) *	1976-10-05	1980-03-10	Kymin Oy Kymmene Ab	Maskinelement av segjaern foer kraftoeverfoering medelst friktion

1978
- 1978-12-13 DE DE19782853870 patent/DE2853870A1/de active Granted
1979
- 1979-12-05 DE DE7979200725T patent/DE2967045D1/de not_active Expired
- 1979-12-05 EP EP79200725A patent/EP0018445B2/fr not_active Expired - Lifetime
- 1979-12-12 JP JP54161365A patent/JPS5910988B2/ja not_active Expired
- 1979-12-12 ZA ZA00796750A patent/ZA796750B/xx unknown

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1054102B (de) *	1955-07-08	1959-04-02	Teves Kg Alfred	Verfahren zum Herstellen eines Gusseisens mit nadelfoermigem Zwischenstufengefuege
DE1123353B (de) *	1957-03-14	1962-02-08	Teves Kg Alfred	Verfahren zur Herstellung von gusseisernen Kolbenringen
FR1591761A (fr) *	1967-11-14	1970-05-04
DE2334992A1 (de) *	1972-07-12	1974-02-07	Kymin Oy Kymmene Ab	Legiertes gusseisen mit kugelgraphit

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1983001959A1 (fr) *	1981-12-03	1983-06-09	Hauke, Wilhelm	Procede pour le durcissement bainitique au moins partiel de façon isothermique d'une piece en fonte
FR2522291A1 (fr) *	1982-03-01	1983-09-02	Pont A Mousson	Tube centrifuge en fonte a graphite spheroidal et son procede de fabrication
EP0087634A1 (fr) *	1982-03-01	1983-09-07	Pont-A-Mousson S.A.	Tube centrifugé en fonte à graphite sphéroidal et son procédé de fabrication
GB2117000A (en) *	1982-03-01	1983-10-05	Pont A Mousson	Centrifugally cast tube of spheroidal graphite cast-iron and its method of manufacture
EP0144907A3 (fr) *	1983-12-05	1986-11-05	Nissan Motor Co., Ltd.	Procédé pour la fabrication de pièces de fonte à graphite sphéroidal par trempe bainitique
EP0203050A1 (fr) *	1985-05-22	1986-11-26	Ab Volvo	Procédé de fabrication d'une fonte à graphite spréroidal, trempée et bainitique
EP0347568A3 (fr) *	1988-06-23	1991-04-03	MAHLE-J. WIZEMANN GmbH & Co. KG	Procédé de fabrication de pièces coulées résistantes à l'usure
EP0639651A1 (fr) *	1993-08-18	1995-02-22	Centre Technique Des Industries De La Fonderie	Procédé de traitement intercritique de charges en fonte
FR2709133A1 (fr) *	1993-08-18	1995-02-24	Tech Ind Fonderie Centre	Procédé de traitement intercritique de charges en fonte.
FR2712606A1 (fr) *	1993-11-19	1995-05-24	Tech Ind Fonderie Centre	Procédé d'élaboration d'une charge de fonte à graphite sphéroïdal à caractéristiques mécaniques élevées.
EP1344839A1 (fr) *	2002-01-18	2003-09-17	Ing.Firman Allan Persson HAB	Fonte nodulaire alliee
EP1384794A1 (fr) *	2002-07-26	2004-01-28	Erre-Vis S.p.A.	Fonte nodulaire pour segments de piston et procédé pour la fabrication de ladite fonte
WO2004022792A3 (fr) *	2002-09-04	2004-06-17	Intermet Corp	Article en fonte douce, fabrique par trempe etagee bainitique et ameliore en termes d'usinabilite, de resistance a la fatigue et a la fissuration en milieu corrosif, et procede de fabrication associe
US7070666B2 (en)	2002-09-04	2006-07-04	Intermet Corporation	Machinable austempered cast iron article having improved machinability, fatigue performance, and resistance to environmental cracking and a method of making the same
CN100398672C (zh) *	2002-09-04	2008-07-02	英特米特公司	等温淬火铸铁件及其制造方法
US7497915B2 (en)	2002-09-04	2009-03-03	Intermet Corporation	Machinable austempered cast iron article having improved machinability, fatigue performance, and resistance to environmental cracking
DE102008050152A1 (de)	2008-10-01	2010-04-08	Claas Guss Gmbh	Hochfeste, duktile Gusseisenlegierung mit Kugelgraphit sowie Verfahren zu deren Herstellung
ITMI20110141A1 (it) *	2011-02-02	2012-08-03	Fonderia Anselmi S P A	Manufatti in ferrolega

Also Published As

Publication number	Publication date
DE2853870C2 (fr)	1987-08-06
ZA796750B (en)	1980-11-26
JPS5910988B2 (ja)	1984-03-13
JPS5594459A (en)	1980-07-17
EP0018445B1 (fr)	1984-06-06
DE2967045D1 (en)	1984-07-12
EP0018445B2 (fr)	1990-01-03
DE2853870A1 (de)	1980-07-03

Legal Events

Date	Code	Title	Description
1980-09-16	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1980-11-12	AK	Designated contracting states	Designated state(s): DE FR GB IT NL SE
1981-10-14	17P	Request for examination filed	Effective date: 19810512
1984-02-14	ITF	It: translation for a ep patent filed
1984-04-07	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1984-06-06	AK	Designated contracting states	Designated state(s): DE FR GB IT NL SE
1984-07-12	REF	Corresponds to:	Ref document number: 2967045 Country of ref document: DE Date of ref document: 19840712
1984-09-14	ET	Fr: translation filed
1984-09-26	RAP2	Party data changed (patent owner data changed or rights of a patent transferred)	Owner name: MUEHLBERGER, HORST DR.
1985-01-08	PLBI	Opposition filed	Free format text: ORIGINAL CODE: 0009260
1985-03-07	PLBI	Opposition filed	Free format text: ORIGINAL CODE: 0009260
1985-03-13	26	Opposition filed	Opponent name: PONT-A-MOUSSONS.A. Effective date: 19841227
1985-05-08	26	Opposition filed	Opponent name: KYMI STROEMBERG OY Effective date: 19850305 Opponent name: THYSSEN INDUSTRIE AG Effective date: 19850305 Opponent name: KLOECKNER-HUMBOLDT-DEUTZ AG Effective date: 19850305 Opponent name: GEORG FISCHER AG Effective date: 19850302 Opponent name: GEBRUEDER SULZER AKTIENGESELLSCHAFT Effective date: 19850225
1985-05-17	NLR1	Nl: opposition has been filed with the epo	Opponent name: PONT-A-MOUSSON S.A.
1985-08-16	NLR1	Nl: opposition has been filed with the epo	Opponent name: THYSSEN INDUSTRIE AG. Opponent name: KLOECKNER-HUMBOLDT-DEUTZ AG. Opponent name: GEORG FISCHER AG. Opponent name: GEBRUEDER SULZER AG.
1988-02-11	PLAB	Opposition data, opponent's data or that of the opponent's representative modified	Free format text: ORIGINAL CODE: 0009299OPPO
1988-03-30	R26	Opposition filed (corrected)	Opponent name: PONT-A-MOUSSONS.A. * 850225 GEBRUEDER SULZER AKTIE Effective date: 19841227
1989-05-19	PLAB	Opposition data, opponent's data or that of the opponent's representative modified	Free format text: ORIGINAL CODE: 0009299OPPO
1989-07-05	R26	Opposition filed (corrected)	Opponent name: PONT-A-MOUSSONS.A. * 850225 GEBRUEDER SULZER AKTIE Effective date: 19841227
1989-11-18	PUAH	Patent maintained in amended form	Free format text: ORIGINAL CODE: 0009272
1989-11-18	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: PATENT MAINTAINED AS AMENDED
1990-01-03	27A	Patent maintained in amended form	Effective date: 19900103
1990-01-03	AK	Designated contracting states	Kind code of ref document: B2 Designated state(s): DE FR GB IT NL SE
1990-03-16	NLR2	Nl: decision of opposition
1990-03-16	NLR3	Nl: receipt of modified translations in the netherlands language after an opposition procedure
1990-03-23	ITF	It: translation for a ep patent filed
1990-04-06	ET3	Fr: translation filed ** decision concerning opposition
1990-11-20	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: SE Payment date: 19901120 Year of fee payment: 12
1990-12-03	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19901203 Year of fee payment: 12
1990-12-31	ITTA	It: last paid annual fee
1990-12-31	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: NL Payment date: 19901231 Year of fee payment: 12
1991-12-05	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Effective date: 19911205
1991-12-06	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Effective date: 19911206
1992-07-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: NL Effective date: 19920701
1992-08-05	GBPC	Gb: european patent ceased through non-payment of renewal fee
1992-08-17	NLV4	Nl: lapsed or anulled due to non-payment of the annual fee
1992-10-30	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
1993-02-05	REG	Reference to a national code	Ref country code: FR Ref legal event code: AR
1993-08-04	REG	Reference to a national code	Ref country code: GB Ref legal event code: 728C
1994-03-09	REG	Reference to a national code	Ref country code: GB Ref legal event code: 728W
1994-11-22	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19941122 Year of fee payment: 16
1995-01-31	EUG	Se: european patent has lapsed	Ref document number: 79200725.4 Effective date: 19920704
1996-08-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Effective date: 19960830
1996-10-31	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
1998-02-17	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 19980217 Year of fee payment: 19
1999-10-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19991001
2005-10-05	APAH	Appeal reference modified	Free format text: ORIGINAL CODE: EPIDOSCREFNO
2008-08-15	PLAB	Opposition data, opponent's data or that of the opponent's representative modified	Free format text: ORIGINAL CODE: 0009299OPPO
2008-09-05	PLAB	Opposition data, opponent's data or that of the opponent's representative modified	Free format text: ORIGINAL CODE: 0009299OPPO
2009-08-28	PLAB	Opposition data, opponent's data or that of the opponent's representative modified	Free format text: ORIGINAL CODE: 0009299OPPO

Publication	Publication Date	Title
EP0018445B1 (fr)	1984-06-06	Procédé pour la fabrication de pièces coulée en fonte nodulaire
DE3401805C2 (de)	1985-11-21	Kugelgraphit-Gußeisen und Verfahren zu seiner Herstellung
US4541878A (en)	1985-09-17	Cast iron with spheroidal graphite and austenitic-bainitic mixed structure
DE2817628C2 (de)	1985-08-14	Zähe, hochfeste Stahllegierungen und Verfahren zur Herstellung solcher Werkstücke
EP1794336B1 (fr)	2010-01-20	Segment de pistons d'un materiau de font
DE69900247T2 (de)	2002-04-18	Stahl und verfahren zur herstellung von teilbaren maschinenteilen
DE1483218C3 (de)	1978-11-23	Verfahren zum Herstellen eines warmfesten, ferritischen Cr-Mo-V-Stahles mit hoher Zeitstandfestigkeit und verbesserter Zeitbruchdehnung
DE102018129828A1 (de)	2019-05-29	Hochfester bainitischer stahl
DE10309386B4 (de)	2005-02-24	Verfahren zur Herstellung eines Gusseisenwerkstoffes mit gezieltem Restkarbidanteil
DE102008050152B4 (de)	2013-05-23	Hochfeste, duktile Gusseisenlegierung mit Kugelgraphit sowie Verfahren zu deren Herstellung
DE3401769A1 (de)	1984-08-09	Kugelpraphit-gusseisen und verfahren zu seiner herstellung
AT134828B (de)	1933-10-10	Maschinenteile, die bei erhöhten Temperaturen arbeiten und starken Temperaturschwankungen ausgesetzt sind, aus Stählen, die Chrom, Molybdän und gegebenenfalls Nickel enthalten.
DE3509709A1 (de)	1985-09-26	Verfahren zur herstellung eines zwischenstufenvergueteten gusseisenkoerpers mit kugelgraphit und der dabei erhaltene koerper
DE2757114A1 (de)	1978-07-06	Verfahren zum herstellen hochfesten kugelgraphitgusses
EP0622466A1 (fr)	1994-11-02	Procédé de durcissement de pièces en fonte à graphite sphéroidal
CA1164777A (fr)	1984-04-03	Fonte a structure sphero-idale mixte de graphite a l'austenite et au bainite
DE556373C (de)	1932-08-06	Verfahren zur Herstellung von Gussstuecken fuer hitzebeanspruchte Gegenstaende
DE939694C (de)	1956-03-01	Verfahren zur Herstellung von Zylinderlaufbuechsen und aehnlich beanspruchten Maschinenteilen
AT389712B (de)	1990-01-25	In sand vergossenes werkstueck aus gusseisen mit kugelgraphit
DE888558C (de)	1953-09-03	Verfahren zur Waermebehandlung von Temperguss
DE935794C (de)	1955-12-01	Weiss erstarrende Gusseisenlegierung sowie Verfahren zur Herstellung von Schnelltemperguss aus dieser
DE2844409C2 (de)	1984-11-22	Gußeisenlegierung als Werkstoff für hochbelastete Maschinenteile, insbesondere Kolbenringe von Verbrennungskraftmaschinen
DE102022112490A1 (de)	2023-03-02	Hochmoduliges, hochfestes, niedrig legiertes graugusseisen für zylinderlaufbuchsen und automobilanwendungen
DE2140022B2 (de)	1978-01-05	Verfahren zum herstellen von rohren aus gusseisen in metallischen schleudergusskokillen
DE624088C (de)	1936-01-13	Verfahren zur Herstellung von Nickelstahl