EP0205417B1 - Stahl, insbesondere für Werkzeuge zur Warmformgebung - Google Patents

Stahl, insbesondere für Werkzeuge zur Warmformgebung Download PDF

Info

Publication number: EP0205417B1
Authority: EP; European Patent Office
Prior art keywords: steel; hot; bis; working tools; tools
Prior art date: 1985-05-23
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.): Expired

Application number

EP19860890149

Other languages

German (de)

English (en)

French (fr)

Other versions

EP0205417A1 (de

Inventor

Rudolf Breitler

Alfred Dr. Kulmburg

Alfred Dr. Schindler

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.)

Boehler GmbH

Original Assignee

Boehler GmbH

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.)

1985-05-23

Filing date

1986-05-21

Publication date

1989-11-29

1986-05-21 Application filed by Boehler GmbH filed Critical Boehler GmbH

1986-12-17 Publication of EP0205417A1 publication Critical patent/EP0205417A1/de

1989-11-29 Application granted granted Critical

1989-11-29 Publication of EP0205417B1 publication Critical patent/EP0205417B1/de

Status Expired legal-status Critical Current

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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium

Definitions

the invention relates to a steel, in particular for tools for the hot forming of metals and alloys.
Hot working steels are used for the production of forging dies, dies, patrices, press dies and the like. It is essential for hot working steels of this type that they also have a corresponding hardness even at higher working temperatures, for example 650 ° C., and this hardness can be maintained for a long time even when kept at this temperature. Furthermore, it is of particular interest that the hardness of the tool is not only given on the surface of the tool, but also that the hardness is approximately the same in the entire cross section. The creep behavior at elevated temperatures should also be low so that long service lives of such tools can be achieved. Increasing the tool life not only means lower unit consumption per unit of time, but also makes it possible to minimize set-up times caused by tool replacement.
DE-A1 3 041 565 discloses a steel with the following composition in% by weight:
the object of the present invention is to create a steel, in particular for tools for the hot forming of metals, which ensures a longer service life even at higher tool temperatures than before. It is therefore essential that the combination of properties of tempering resistance is optimized even at higher temperatures, elongation at break and constriction at higher temperatures and at least creep at higher temperatures.
the time-break elongation in% and the time-break constriction in% were also tested on three samples in each case in accordance with DIN 50145, and the corresponding values can be found in Table 3.
the curing of the samples was - as mentioned above - in which the experiments were carried out at 750 ° C.
the hardness profile in the cross-section of the samples (25 x 25 mm and height 20 mm) is determined at room temperature, whereby the hardness on the surface determines 25%, 50% and 75% below it and on the opposite surface (100%) and reproduced in Table 4.

Landscapes

Chemical & Material Sciences (AREA)
Engineering & Computer Science (AREA)
Materials Engineering (AREA)
Mechanical Engineering (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Heat Treatment Of Steel (AREA)
Moulds For Moulding Plastics Or The Like (AREA)
Heat Treatment Of Articles (AREA)
Forging (AREA)

EP19860890149 1985-05-23 1986-05-21 Stahl, insbesondere für Werkzeuge zur Warmformgebung Expired EP0205417B1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
AT1562/85		1985-05-23
AT156285A AT388943B (de)	1985-05-23	1985-05-23	Stahl, insbesondere fuer werkzeuge zur warmformgebung

Publications (2)

Publication Number	Publication Date
EP0205417A1 EP0205417A1 (de)	1986-12-17
EP0205417B1 true EP0205417B1 (de)	1989-11-29

Family

ID=3516090

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19860890149 Expired EP0205417B1 (de)	1985-05-23	1986-05-21	Stahl, insbesondere für Werkzeuge zur Warmformgebung

Country Status (5)

Country	Link
EP (1)	EP0205417B1 (es)
JP (1)	JPS61272353A (es)
AT (1)	AT388943B (es)
DE (1)	DE3667181D1 (es)
ES (1)	ES8704213A1 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2881869B2 (ja) *	1989-12-06	1999-04-12	大同特殊鋼株式会社	溶接性にすぐれたプラスチック成形金型用鋼
EP2476772A1 (en) *	2011-01-13	2012-07-18	Rovalma, S.A.	High thermal diffusivity and high wear resistance tool steel
CA3009437A1 (en) *	2015-12-24	2017-06-29	Rovalma, S.A.	Long durability high performance steel for structural, machine and tooling applications

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR788889A (fr) *	1934-11-27	1935-10-18	Climax Molybdenum Co	Perfectionnements aux aciers spéciaux au molybdène
GB830775A (en) *	1957-11-25	1960-03-23	Gen Electric	Improvements in forming dies and alloy therefor
GB1220620A (en) *	1967-05-09	1971-01-27	Nippon Steel Corp	Wearing member having a hard surfacing layer high in wear-resistance and heat crack-proofness
SE426177B (sv) *	1979-12-03	1982-12-13	Uddeholms Ab	Varmarbetsstal

1985
- 1985-05-23 AT AT156285A patent/AT388943B/de not_active IP Right Cessation
1986
- 1986-05-13 JP JP10783486A patent/JPS61272353A/ja active Pending
- 1986-05-21 EP EP19860890149 patent/EP0205417B1/de not_active Expired
- 1986-05-21 DE DE8686890149T patent/DE3667181D1/de not_active Expired - Lifetime
- 1986-05-22 ES ES555210A patent/ES8704213A1/es not_active Expired

Also Published As

Publication number	Publication date
EP0205417A1 (de)	1986-12-17
JPS61272353A (ja)	1986-12-02
ES555210A0 (es)	1987-03-16
DE3667181D1 (de)	1990-01-04
AT388943B (de)	1989-09-25
ES8704213A1 (es)	1987-03-16
ATA156285A (de)	1989-02-15

Legal Events

Date	Code	Title	Description
1986-11-01	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
1986-12-17	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): BE CH DE FR GB IT LI LU NL
1987-07-22	17P	Request for examination filed	Effective date: 19870520
1988-08-10	17Q	First examination report despatched	Effective date: 19880624
1989-02-01	RAP1	Party data changed (applicant data changed or rights of an application transferred)	Owner name: BOEHLER GESELLSCHAFT M.B.H.
1989-06-30	ITF	It: translation for a ep patent filed	Owner name: DE DOMINICIS & MAYER S.R.L.
1989-10-14	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1989-11-29	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): BE CH DE FR GB IT LI LU NL
1990-01-04	REF	Corresponds to:	Ref document number: 3667181 Country of ref document: DE Date of ref document: 19900104
1990-01-05	ET	Fr: translation filed
1990-01-10	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
1990-09-20	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1990-09-22	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1990-09-22	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1990-11-07	26N	No opposition filed
1990-11-14	26N	No opposition filed
1992-05-07	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19920507 Year of fee payment: 7
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1992-10-28	EPTA	Lu: last paid annual fee
1993-05-21	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19930521 Ref country code: GB Effective date: 19930521
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1993-11-30	BERE	Be: lapsed	Owner name: BOHLER G.M.B.H. Effective date: 19930531
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1994-01-17	NLV4	Nl: lapsed or anulled due to non-payment of the annual fee
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2005-05-21	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: 20050521

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DE3650515T2 (de)	1996-12-12	Hochfester hitzebeständiger ferritischer Stahl mit hohem Chromgehalt
DE69003202T2 (de)	1994-03-31	Hochfeste, hitzebeständige, niedrig legierte Stähle.
DE69800106T2 (de)	2000-09-28	Korrosionsbeständige, hochfeste Kupferlegierung mit guter Stanzbarkeit
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EP0733719A1 (de)	1996-09-25	Eisenbasislegierung zur Verwendung bei erhöhter Temperatur