EP0885313A1 - High-speed steel - Google Patents

High-speed steel

Info

Publication number
EP0885313A1
EP0885313A1 EP97934581A EP97934581A EP0885313A1 EP 0885313 A1 EP0885313 A1 EP 0885313A1 EP 97934581 A EP97934581 A EP 97934581A EP 97934581 A EP97934581 A EP 97934581A EP 0885313 A1 EP0885313 A1 EP 0885313A1
Authority
EP
European Patent Office
Prior art keywords
steel
vanadium
carbon
molybdenum
tungsten
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
EP97934581A
Other languages
German (de)
French (fr)
Other versions
EP0885313B1 (en
Inventor
Jacques Adrien
Bertrand Remi
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 France SA
Original Assignee
Thyssen France SA
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 France SA filed Critical Thyssen France SA
Publication of EP0885313A1 publication Critical patent/EP0885313A1/en
Application granted granted Critical
Publication of EP0885313B1 publication Critical patent/EP0885313B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
    • C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%

Definitions

  • the object of the present invention is to produce a quick-cut steel produced from powder metallurgy, extremely hard, which has Rockwell hardness on the "C" scale between 68 and 70 Rc.
  • the complement being iron plus the impurities characteristic of the practice of metal fabrication, said steel having a dispersion essentially composed of carbides of the MC vanadium type.
  • the steel according to the present invention exhibits remarkable toughness, due in large part to a remarkable distribution of primary carbides, associated with very good hot hardness.
  • the family of steels of the present invention offers a particular aptitude for shaping a tool * machinable, hardenability, moldability.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Abstract

A steel produced by densified and agglomerated high-purity pre-alloyed powder metallurgy is disclosed. The steel comprises < 1 wt.% of manganese, < 1 wt.% of silicon, 4.50-6.45 wt.% of chromium, 4-6 wt.% of molybdenum, 6.10-6.50 wt.% of vanadium, 18.20-18.70 wt.% of tungsten, </=0.020 of sulphur, </=0.030 of phosphorus, </=100 ppm of oxygen, 5-7 wt.% of cobalt, 0.050-0.080 wt.% of nitrogen, </=0.020 of aluminium and 1.80-1.95 wt.% of carbon. The balance is iron plus the typical impurities arising during steel production. Said steel has a dispersion essentially consisting of carbides such as vanadium MC.

Description

ACIER A COUPE RAPIDE FAST CUT STEEL
Comme les industries de l'aviation, de l'armement et les industries associées usinent des matériaux ayant une résistance mécanique toujours plus grande, il est évident qu'on a besoin d'un acier à coupe rapide très dur qui, par la métallurgie des poudres, possède une ténacité élevée en offrant une résistance des arêtes de coupe positive de très haut niveau.As the aviation, armaments and associated industries machine materials with an ever increasing mechanical resistance, it is obvious that we need a very hard high-speed steel which, by the metallurgy of powders, has a high tenacity by offering a resistance of the cutting edges positive of very high level.
La présente invention a pour but de réaliser un acier à coupe rapide élaboré en partant de la métallurgie des poudres, extrêment dur, qui présente une dureté Rockwell à l'échelle "C" entre 68 et 70 Rc.The object of the present invention is to produce a quick-cut steel produced from powder metallurgy, extremely hard, which has Rockwell hardness on the "C" scale between 68 and 70 Rc.
Cet acier, obtenu à partir d'une poudre pré-alliée, agglomérée, est caractérisé en ce que l'alliage a la composition suivante :This steel, obtained from a pre-alloyed, agglomerated powder, is characterized in that the alloy has the following composition:
Pourcentages en valeur pondéraleWeight percentages
Fourchette préférée Fourchette large Manganèse 0,20-0,40 < 1%Preferred range Manganese wide range 0.20-0.40 <1%
Silicium 0,20-0,40 < 1%Silicon 0.20-0.40 <1%
Chrome 4,50-5 4,50-6,45% Molybdène 4,50-5 4-6% Vanadium 6,10 - 6,50 6,10 - 6,50Chromium 4.50-5 4.50-6.45% Molybdenum 4.50-5 4-6% Vanadium 6.10 - 6.50 6.10 - 6.50
Tungstène 18,20 - 18,70 18,20 - 18,70Tungsten 18.20 - 18.70 18.20 - 18.70
Soufre £ 0,015% .0,020%Sulfur £ 0.015%. 0.020%
Phosphore * 0,020% •0,030%Phosphorus * 0.020% • 0.030%
Oxygène _ï_. lOOppn , 100 ppmOxygen _ï_. 100ppn, 100 ppm
Cobalt 5,40 - 6,20 % 5 - 7%Cobalt 5.40 - 6.20% 5 - 7%
Azote 0,050 - 0,080 % 0,050 - 0,080%Nitrogen 0.050 - 0.080% 0.050 - 0.080%
Aluminium < 0,015% 0,020%Aluminum <0.015% 0.020%
Carbone 1,83 - 1,90% 1,80 - 1,95%Carbon 1.83 - 1.90% 1.80 - 1.95%
Le complément étant du fer plus les impuretés caractéristiques de la pratique de la fabrication du métal, ledit acier ayant une disperβion essentiellement composée de carbures du type MC de vanadium. L'acier selon la présente invention présente une ténacité remarquable, due en grande partie à une répartition de carbures primaires remarquable, associée à une très bonne dureté à chaud. En plus de la dureté, de la dureté à chaud, de la résistance à l'usure, d'une ténacité exceptionnelle la famille d'aciers de la présente invention offre une aptitude particulière à la mise en forme d'outil* usinab lité, trempabi lité , moulabilité .The complement being iron plus the impurities characteristic of the practice of metal fabrication, said steel having a dispersion essentially composed of carbides of the MC vanadium type. The steel according to the present invention exhibits remarkable toughness, due in large part to a remarkable distribution of primary carbides, associated with very good hot hardness. In addition to hardness, hot hardness, resistance to wear, exceptional toughness, the family of steels of the present invention offers a particular aptitude for shaping a tool * machinable, hardenability, moldability.
La relation stoechionétrique pour la formation du carbure de vanadium (type MC cubique à face centrée) est de 1% de vanadium pour 0,020% de carbone. La teneur en carbone de l'acier est équilibrée avec ses teneurs en vanadium, en chrome, en molybdène et en tungstène pour fournir suffisamment de carbone et permettre ainsi d'être traitée thermiquement de façon à obtenir une dureté 66Hrc.The stoechionetric relationship for the formation of vanadium carbide (face-centered cubic MC type) is 1% vanadium for 0.020% carbon. The carbon content of the steel is balanced with its vanadium, chromium, molybdenum and tungsten contents to supply sufficient carbon and thus allow it to be heat treated so as to obtain a hardness of 66 Hrc.
L'acier, pour outils de mise en forme, selon l'invention présente une combinaison de qualités résistance à l'usure, dureté à chaud, caractérisée par l'essai de capacité de coupe Mathon, ténacité qui ne pouvait être obtenue jusqu'à présent. La ténacité est déterminée par une mesure suivant l'essai Charpy désigné dans la norme ASTM-23-92 et 23-93. Une éprouvette de référence 10x10x55mm est traitée à 1.160°c , arrêt à l'huile ou arrêt isotherme à 560°C suivi de trois revenus de une heure à 560°C; elle présente alors une ténacité supérieure à 40 J/cm2. La capacité de coupe est caractérisée par l'essai MATHON (défini dans la norme AFNOR A.03.654). The steel for shaping tools according to the invention exhibits a combination of wear resistance and hot hardness qualities, characterized by the Mathon cutting capacity test, toughness which could not be obtained until present. The toughness is determined by a measurement according to the Charpy test designated in standard ASTM-23-92 and 23-93. A 10x10x55mm reference test piece is treated at 1.160 ° c, oil stop or isothermal stop at 560 ° C followed by three one-hour tempers at 560 ° C; it then has a toughness greater than 40 J / cm 2 . The cutting capacity is characterized by the MATHON test (defined in standard AFNOR A.03.654).

Claims

Revendications claims
1. Acier obtenu par la métallurgie des poudres, formée à partir d'une poudre pré-alliée de haute pureté, agglomérée, densifiée, caractérisé en ce que l'acier a la composition pondérale suivante :1. Steel obtained by powder metallurgy, formed from a high purity pre-alloyed powder, agglomerated, densified, characterized in that the steel has the following weight composition:
Manganèse -£ 1%Manganese - £ 1%
Siliciem *.1% Chrome 4,50 - 6,45%Silicon *. 1% Chromium 4.50 - 6.45%
Molybdène 4 - 6% Vanadium 6,10 - 6,50 % Tungstène 18,20 - 18,70%Molybdenum 4 - 6% Vanadium 6.10 - 6.50% Tungsten 18.20 - 18.70%
Soufre jέ.0,020%Sulfur jέ.0.020%
Phosphore iz 0,030%Phosphorus iz 0.030%
Oxygène ialOOppm Cobalt 5 - 7%Oxial ialOOppm Cobalt 5 - 7%
Azote 0,050 - 0,080%Nitrogen 0.050 - 0.080%
Aluminium ≤.0,020 % Carbone 1,80 - 1,95%Aluminum ≤.0.020% Carbon 1.80 - 1.95%
Le complément étant du fer plus les impuretés caractéristiques de la pratique de la fabrication de l'acier, ledit acier ayant une dispersion essentiellement de carbures du type MC de vanadium.The complement being iron plus the impurities characteristic of the practice of steel making, said steel having a dispersion essentially of carbides of the MC vanadium type.
2. Acier selon la revendication 1, caractérisé en ce que l'alliage a la composition générale suivante :2. Steel according to claim 1, characterized in that the alloy has the following general composition:
Manganèse 0,20 - 0,40 %Manganese 0.20 - 0.40%
Silicium 0,20 - 0,40 %Silicon 0.20 - 0.40%
Chrome 4,50 - 5 %Chrome 4.50 - 5%
Molybdène 4,50 - 5 %Molybdenum 4.50 - 5%
Vanadium 6,10 - 6,50 %Vanadium 6.10 - 6.50%
Tungstène 18,20 - 18,70% Soufre A 0,015%Tungsten 18.20 - 18.70% 0.015% sulfur
Phosphore i» 0,020%Phosphorus i »0.020%
Oxygène £. lOOpp Cobalt 5,40 - 6,20 %Oxygen £. lOOpp Cobalt 5.40 - 6.20%
Azote 0,050 - 0,080 %Nitrogen 0.050 - 0.080%
Aluminium ->0,015 % Carbone 1,83 - 1,90% Aluminum -> 0.015% Carbon 1.83 - 1.90%
EP97934581A 1996-07-19 1997-07-17 High-speed steel Expired - Lifetime EP0885313B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9609080A FR2751348B1 (en) 1996-07-19 1996-07-19 STEEL FOR SHAPING TOOLS
FR9609080 1996-07-19
PCT/FR1997/001328 WO1998003692A1 (en) 1996-07-19 1997-07-17 High-speed steel

Publications (2)

Publication Number Publication Date
EP0885313A1 true EP0885313A1 (en) 1998-12-23
EP0885313B1 EP0885313B1 (en) 2001-10-24

Family

ID=9494244

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97934581A Expired - Lifetime EP0885313B1 (en) 1996-07-19 1997-07-17 High-speed steel

Country Status (13)

Country Link
US (1) US5969277A (en)
EP (1) EP0885313B1 (en)
KR (1) KR20000064245A (en)
AR (1) AR007934A1 (en)
AT (1) ATE207549T1 (en)
AU (1) AU727767B2 (en)
BR (1) BR9706600A (en)
CA (1) CA2230718A1 (en)
DE (1) DE69707651T2 (en)
ES (1) ES2166096T3 (en)
FR (1) FR2751348B1 (en)
PL (1) PL325556A1 (en)
WO (1) WO1998003692A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE240420T1 (en) 1999-01-29 2003-05-15 Crs Holdings Inc HIGH-STRENGTH POWDER METALLURGICAL TOOL STEEL AND ITEMS MADE THEREFROM

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB781083A (en) * 1954-10-01 1957-08-14 Gregory Jamieson Comstock Improvements relating to high speed tool forms and their production
US3150444A (en) * 1962-04-26 1964-09-29 Allegheny Ludlum Steel Method of producing alloy steel
US4080205A (en) * 1972-07-13 1978-03-21 Toyota Jidosha Kogyo Kabushiki Kaisha Sintered alloy having wear-resistance at high temperature
JP2725333B2 (en) * 1988-12-27 1998-03-11 大同特殊鋼株式会社 Powder high speed tool steel
US5403372A (en) * 1991-06-28 1995-04-04 Hitachi Metals, Ltd. Vane material, vane, and method of producing vane
SE500008C2 (en) * 1991-08-07 1994-03-21 Erasteel Kloster Ab High speed steel with good hot hardness and durability made of powder

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9803692A1 *

Also Published As

Publication number Publication date
BR9706600A (en) 1999-07-20
WO1998003692A1 (en) 1998-01-29
FR2751348B1 (en) 1998-10-02
KR20000064245A (en) 2000-11-06
EP0885313B1 (en) 2001-10-24
AU3773797A (en) 1998-02-10
FR2751348A1 (en) 1998-01-23
AR007934A1 (en) 1999-11-24
US5969277A (en) 1999-10-19
DE69707651T2 (en) 2002-07-11
DE69707651D1 (en) 2001-11-29
ES2166096T3 (en) 2002-04-01
ATE207549T1 (en) 2001-11-15
AU727767B2 (en) 2000-12-21
CA2230718A1 (en) 1998-01-29
PL325556A1 (en) 1998-08-03

Similar Documents

Publication Publication Date Title
RU2569271C1 (en) Welding of steel sheets by friction with mixing
CN101062533B (en) Abrasion-proof pile-up welding flux-cored wire for roll squeezer
US4276085A (en) High speed steel
CN101575684A (en) Self-lubricating wear-resistant surfacing alloy for drill rod joint
JP2002535496A (en) Hard tool steels and powder metallurgy steels therefrom
EP1040890A1 (en) Powder material for powder plasma overlaying and powder plasma overlaying metal
EP0885313A1 (en) High-speed steel
JP2005521790A (en) Cemented carbide cutting material or cermet cutting material and use thereof
FR2751349A1 (en) High speed steel for cutting tools used in aviation and armaments industry
US4671930A (en) High hardness and high toughness nitriding powder metallurgical high-speed steel
US4599109A (en) High hardness and high toughness nitriding powder metallurgical high-speed steel
JPH02109619A (en) Throw away drill tip
US1998957A (en) Ferrous alloy
JPS59116348A (en) Wear-resistant cu alloy having high strength and high toughness
JP2002105588A (en) Iron based high rigidity material and its production method
FR2722211A1 (en) Wear-resistant tool steel
JPS5937742B2 (en) High wear resistance sintered high speed steel
SU913673A1 (en) Composition of electrode coating
JPH10166166A (en) Aluminothermite mixture
CN101301706A (en) High abrasion-proof overlaying welding flux-cored wire
US1233862A (en) A cobpobation ob
JPS6360109B2 (en)
MXPA98002135A (en) Tool for tools configured
JPH0966305A (en) Work roll for cold rolling and its production
JPH02133545A (en) Highly alloyed high speed tool steel

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

17P Request for examination filed

Effective date: 19980907

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES GB IE IT LI NL SE

17Q First examination report despatched

Effective date: 20000314

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES GB IE IT LI NL SE

REF Corresponds to:

Ref document number: 207549

Country of ref document: AT

Date of ref document: 20011115

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: FRENCH

REF Corresponds to:

Ref document number: 69707651

Country of ref document: DE

Date of ref document: 20011129

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20020123

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2166096

Country of ref document: ES

Kind code of ref document: T3

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

Ref country code: IT

Payment date: 20080624

Year of fee payment: 12

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

Ref country code: SE

Payment date: 20080619

Year of fee payment: 12

Ref country code: IE

Payment date: 20080625

Year of fee payment: 12

Ref country code: ES

Payment date: 20080701

Year of fee payment: 12

Ref country code: DE

Payment date: 20080814

Year of fee payment: 12

Ref country code: CH

Payment date: 20080715

Year of fee payment: 12

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

Ref country code: NL

Payment date: 20080624

Year of fee payment: 12

Ref country code: AT

Payment date: 20080623

Year of fee payment: 12

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

Ref country code: GB

Payment date: 20080711

Year of fee payment: 12

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

Ref country code: BE

Payment date: 20080814

Year of fee payment: 12

BERE Be: lapsed

Owner name: S.A. *THYSSEN FRANCE

Effective date: 20090731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20090717

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20100201

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

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

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090731

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

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090717

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: 20100202

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090731

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090717

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

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090717

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20090718

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

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090718

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

Effective date: 20090717

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

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090718

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

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100201