EP0257262A1 - Acier martensitique à durcissement par vieillissement - Google Patents

Acier martensitique à durcissement par vieillissement Download PDF

Info

Publication number
EP0257262A1
EP0257262A1 EP87109961A EP87109961A EP0257262A1 EP 0257262 A1 EP0257262 A1 EP 0257262A1 EP 87109961 A EP87109961 A EP 87109961A EP 87109961 A EP87109961 A EP 87109961A EP 0257262 A1 EP0257262 A1 EP 0257262A1
Authority
EP
European Patent Office
Prior art keywords
steel
age
martensitic steel
hardenable martensitic
plastic molds
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.)
Granted
Application number
EP87109961A
Other languages
German (de)
English (en)
Other versions
EP0257262B1 (fr
Inventor
Helmut Dr.-Ing. Brandis
Paul Dr.-Ing. Gümpel
Edmund Dr.-Ing. Haberling
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.)
Thyssen Stahl AG
Original Assignee
Thyssen Edelstahlwerke AG
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 Thyssen Edelstahlwerke AG filed Critical Thyssen Edelstahlwerke AG
Priority to AT87109961T priority Critical patent/ATE60370T1/de
Publication of EP0257262A1 publication Critical patent/EP0257262A1/fr
Application granted granted Critical
Publication of EP0257262B1 publication Critical patent/EP0257262B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • the invention relates to an inexpensive martensitic steel, in particular for the production of plastic molds.
  • the steel In the solution-annealed condition, the steel should have a strength of 900 to 1100 N / mm 2 and should therefore be easy to machine.
  • a simple aging treatment at 400 to 500 ° C should then achieve tensile strength values of at least 1200 N / mm 2 .
  • plastic molds mainly 40 CrMnMo 7 plastic mold steel, material no. 1.2311 or the sulfur-alloyed variant 40 CrMnMoS 86, material no. 1.2312 used. These steels are tempered by the manufacturer to tensile strength values of 900 to 1100 N / mm 2 and processed into tools in this state. Subsequent heat treatment of the tools would lead to impermissible dimensional changes, warping or surface impairments. From this, however, there arises the requirement that the hardening strength remains limited to 1100 to 1200 N / mm 2 , because higher strength values would make machining more difficult.
  • the object of the invention was therefore to propose a steel which has a low strength and thus good machinability in the delivery state and which has a strength of only after the completion of the tools, by means of a simple heat treatment, which does not lead to any change in size or surface at least 1200 N / mm 2 can be brought.
  • the conventional martensitic hardenable steels with 18% nickel, 8% cobalt, 5% molybdenum and up to 1.4% titanium, which have a tensile strength of approx. 1000 N / mm 2 and can be hardened to strength values above 2000 N / mm 2 are only of limited use due to their high alloy content and the associated costs for the production of plastic molds.
  • the steel according to the invention is an iron alloy with 8 to 14% manganese as the main component. Manganese contents of 8% already lead to favorable properties, the optimal manganese content is approx. 12%.
  • the steel is also enriched with alloying elements that are dissolved in austenite when heated to temperatures above 800 ° C and remain dissolved in martensite even after quenching to room temperature. It is a combination of the alloy elements C ,, Si, Ti and Al as compulsory components and Mo, W, Co and Ni as optional components.
  • the silicon content of at least 0.5% is necessary in order to achieve sufficiently high hardness values even with realistic aging times of 10 to 20 h, see Figure 2.
  • An increase in this effect without impairing the toughness is caused by the addition of nickel, which is used in a The order of magnitude of 1 to 2% should be, see Figure 3.
  • Titan is significantly involved in the formation of intermetallic phases and therefore contributes significantly to the increase in hardness, see Figure 4.
  • Claims 2 and 3 contain a preferred composition.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Articles (AREA)
EP87109961A 1986-08-21 1987-07-10 Acier martensitique à durcissement par vieillissement Expired - Lifetime EP0257262B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87109961T ATE60370T1 (de) 1986-08-21 1987-07-10 Martensitaushaertbarer stahl.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3628395 1986-08-21
DE3628395A DE3628395C1 (de) 1986-08-21 1986-08-21 Verwendung eines Stahls fuer Kunststofformen

Publications (2)

Publication Number Publication Date
EP0257262A1 true EP0257262A1 (fr) 1988-03-02
EP0257262B1 EP0257262B1 (fr) 1991-01-23

Family

ID=6307870

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87109961A Expired - Lifetime EP0257262B1 (fr) 1986-08-21 1987-07-10 Acier martensitique à durcissement par vieillissement

Country Status (4)

Country Link
US (1) US4788034A (fr)
EP (1) EP0257262B1 (fr)
AT (1) ATE60370T1 (fr)
DE (1) DE3628395C1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997034021A1 (fr) * 1996-03-12 1997-09-18 Bayer Aktiengesellschaft Dispositif et procede pour la production de pieces en matiere plastique, en particulier de pieces moulees en polyurethanne
EP3202427A1 (fr) * 2016-02-03 2017-08-09 Deutsche Edelstahlwerke GmbH Utilisation d'un alliage a base de cobalt biocompatible, se solidifiant par formation de cristaux mixtes ou trempe par precipitation et procede de fabrication d'implants ou de protheses par enlevement de matiere
EP3719158B1 (fr) * 2019-04-01 2022-01-26 Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG Utilisation d'une poudre d'acier, procédé de fabrication d'un composant d'acier selon un procédé de fabrication additive

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5891388A (en) * 1997-11-13 1999-04-06 Woojin Inc. Fe-Mn vibration damping alloy steel having superior tensile strength and good corrosion resistance
US6572713B2 (en) 2000-10-19 2003-06-03 The Frog Switch And Manufacturing Company Grain-refined austenitic manganese steel casting having microadditions of vanadium and titanium and method of manufacturing
AU2006284895B2 (en) * 2005-08-30 2011-09-08 Ati Properties, Inc. Steel compositions, methods of forming the same, and articles formed therefrom
EP2183401B1 (fr) 2007-08-01 2018-03-07 ATI Properties LLC Alliages a base de fer de haute durete et a tenacite elevee et procede de fabrication de ces alliages
US8444776B1 (en) 2007-08-01 2013-05-21 Ati Properties, Inc. High hardness, high toughness iron-base alloys and methods for making same
US10453157B2 (en) 2010-01-22 2019-10-22 Deka Products Limited Partnership System, method, and apparatus for electronic patient care
US9182196B2 (en) 2011-01-07 2015-11-10 Ati Properties, Inc. Dual hardness steel article
US9657363B2 (en) 2011-06-15 2017-05-23 Ati Properties Llc Air hardenable shock-resistant steel alloys, methods of making the alloys, and articles including the alloys
US10563681B2 (en) 2011-12-21 2020-02-18 Deka Products Limited Partnership System, method, and apparatus for clamping
CN117026097B (zh) * 2023-10-10 2023-12-29 内蒙古科技大学 一种马氏体时效钢及其制备方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE963782C (de) * 1943-06-16 1957-05-16 Phoenix Rheinrohr Ag Vereinigt Verwendung hochlegierter Manganstaehle als Werkstoff fuer Bauteile, die mit heissem Kohlenoxydgas in Beruehrung kommen
GB1036442A (en) * 1963-02-21 1966-07-20 British Iron Steel Research Improvements in or relating to alloy steels
DE1558638A1 (de) * 1967-04-13 1970-07-02 Southern Res Inst Eisenlegierung
DD101702A1 (fr) * 1973-01-15 1973-11-12

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2683677A (en) * 1942-07-27 1954-07-13 Jr Francis M Walters Method of precipitation hardening iron alloys
US3392064A (en) * 1965-10-13 1968-07-09 Southern Res Inst Ferrous base manganese age hardening alloy and method
SE343892B (fr) * 1969-02-10 1972-03-20 Bofors Ab
JPS55138059A (en) * 1979-04-14 1980-10-28 Daido Steel Co Ltd High manganese steel having good wear resistance to earth and sand
CA1177680A (fr) * 1979-07-10 1984-11-13 Robert D. Jones Aciers au manganese
SU834213A1 (ru) * 1979-10-12 1981-05-30 Уральский Ордена Трудового Красногознамени Политехнический Институтим. C.M.Кирова Сталь
JPS5716145A (en) * 1980-07-03 1982-01-27 Daido Steel Co Ltd High manganese non magnetic steel having small thermal expansion coefficient
JPS57185958A (en) * 1981-05-07 1982-11-16 Nippon Kokan Kk <Nkk> High-manganese nonmagnetic steel with remarkably high specific resistance
AT390806B (de) * 1983-09-23 1990-07-10 Kos Bernd Austenitischer manganhartstahl und verfahren zu seiner herstellung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE963782C (de) * 1943-06-16 1957-05-16 Phoenix Rheinrohr Ag Vereinigt Verwendung hochlegierter Manganstaehle als Werkstoff fuer Bauteile, die mit heissem Kohlenoxydgas in Beruehrung kommen
GB1036442A (en) * 1963-02-21 1966-07-20 British Iron Steel Research Improvements in or relating to alloy steels
DE1558638A1 (de) * 1967-04-13 1970-07-02 Southern Res Inst Eisenlegierung
DD101702A1 (fr) * 1973-01-15 1973-11-12

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997034021A1 (fr) * 1996-03-12 1997-09-18 Bayer Aktiengesellschaft Dispositif et procede pour la production de pieces en matiere plastique, en particulier de pieces moulees en polyurethanne
EP3202427A1 (fr) * 2016-02-03 2017-08-09 Deutsche Edelstahlwerke GmbH Utilisation d'un alliage a base de cobalt biocompatible, se solidifiant par formation de cristaux mixtes ou trempe par precipitation et procede de fabrication d'implants ou de protheses par enlevement de matiere
WO2017134209A1 (fr) * 2016-02-03 2017-08-10 Deutsche Edelstahlwerke Specialty Steel Gmbh & Co. Kg Utilisation d'un alliage à base de cobalt biocompatible, obtenu par durcissement structural ou par durcissement par solution solide et procédé pour fabriquer des implants ou des prothèses par usinage par enlèvement de matière
US10751446B2 (en) 2016-02-03 2020-08-25 Deutsche Edelstahlwerke Specialty Steel Gmbh & Co. Use of a precipitation-hardening or solid-solution-strengthening, biocompatible cobalt-based alloy and method for producing implants or prostheses by means of material-removing machining
EP3719158B1 (fr) * 2019-04-01 2022-01-26 Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG Utilisation d'une poudre d'acier, procédé de fabrication d'un composant d'acier selon un procédé de fabrication additive

Also Published As

Publication number Publication date
ATE60370T1 (de) 1991-02-15
DE3628395C1 (de) 1988-03-03
EP0257262B1 (fr) 1991-01-23
US4788034A (en) 1988-11-29

Similar Documents

Publication Publication Date Title
DE69523268T2 (de) Verfahren zum Herstellen eines aus einem Stück hergestellter Hochdruck-Niederdruck-Turbinenrotor
DE69203791T2 (de) Verfahren zur Herstellung eines Werkstuckes aus einer Titanlegierung mit einer modifizierten Warmverarbeitungsstufe und hergestelltes Werkstuck.
DE69811200T2 (de) Einsatzstahl mit hervorragender verhinderung der sekundärrekristallisation während der aufkohlung, verfahren zu dessen herstellung, halbzeug für aufzukohlende teile
DE69606061T2 (de) Hochfestes, kerbzähes ausscheidungshärtbarer rostfreies stahl
AT392654B (de) Nichtrostender, ausscheidungshaertbarer martensitstahl
DE102006005250A1 (de) Eisen-Nickel-Legierung
EP0257262B1 (fr) Acier martensitique à durcissement par vieillissement
EP2662166A1 (fr) Matière première avec grande résistance à l&#39;usure
EP0123054B1 (fr) Acier au chrome, résistant à la corrosion et procédé pour sa fabrication
EP0348380B1 (fr) Utilisation d&#39;un alliage à base de fer pour la fabrication de pièces frittées, présentant une haute résistance à la corrosion, une haute résistance à l&#39;usure ainsi qu&#39;une haute tenacité et résistance à la compression et destinées, en particulier, au travail des matières synthétiques
DE69903403T2 (de) Rostfreier martensitischer automatenstahl
DE69202488T2 (de) Verfahren zur Herstellung von Schneidwerkstoff mit einer verbesserten Zähigkeit.
DE1232759B (de) Martensitaushaertbarer Chrom-Nickel-Stahl
DE10124393A1 (de) Hitzebeständiger Stahl, Verfahren zur thermischen Behandlung von hitzebeständigem Stahl, und Kompenten aus hitzebeständigem Stahl
DE1558676C3 (fr)
DE2345882C2 (de) Verfahren zur Herstellung eines Werkstoffs mit guten Federeigenschaften
DE69311857T2 (de) Kaltgehärteter rostfreier stahl für federn
DE69601045T2 (de) Ausscheidungshärtbarer rostfreier Stahl
DE2007057A1 (de) Härtbarer Legierungsstahl
DE102017131219A1 (de) Verfahren zum Herstellen eines Gegenstands aus einem Maraging-Stahl
DE60216304T2 (de) Austenitischer rostfreier CrNiMnCu Stahl mit niedrigem Nickelgehalt
DE2420072C2 (de) Verschleißfeste rostfreie Stahllegierung, Verfahren zum Wärmebehandeln derselben und deren Verwendung
DE102018108173A1 (de) Austenitische Legierung und Verfahren zum Herstellen einer stickstoffhaltigen austenitischen Legierung
DE3617685C2 (fr)
EP1052304A1 (fr) Acier martensitique contenant du chrome résistant à la corrosion

Legal Events

Date Code Title Description
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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT FR GB IT SE

17P Request for examination filed

Effective date: 19880406

17Q First examination report despatched

Effective date: 19890915

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT FR GB IT SE

REF Corresponds to:

Ref document number: 60370

Country of ref document: AT

Date of ref document: 19910215

Kind code of ref document: T

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19910624

Year of fee payment: 5

Ref country code: FR

Payment date: 19910624

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19910701

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19910705

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19920710

Ref country code: AT

Effective date: 19920710

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19920711

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19920710

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19930331

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 87109961.0

Effective date: 19930204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050710