EP1664363A1 - Hartmetall- oder cermetkörper und verfahren zu seiner herstellung - Google Patents
Hartmetall- oder cermetkörper und verfahren zu seiner herstellungInfo
- Publication number
- EP1664363A1 EP1664363A1 EP04732930A EP04732930A EP1664363A1 EP 1664363 A1 EP1664363 A1 EP 1664363A1 EP 04732930 A EP04732930 A EP 04732930A EP 04732930 A EP04732930 A EP 04732930A EP 1664363 A1 EP1664363 A1 EP 1664363A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mass
- layer
- volume
- carbonitrides
- nitrides
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
- B22F3/1007—Atmosphere
- B22F3/101—Changing atmosphere
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
- C23C30/005—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process on hard metal substrates
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/76—Adjusting the composition of the atmosphere
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
- Y10T428/2495—Thickness [relative or absolute]
- Y10T428/24967—Absolute thicknesses specified
- Y10T428/24975—No layer or component greater than 5 mils thick
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
- Y10T428/264—Up to 3 mils
- Y10T428/265—1 mil or less
Definitions
- the invention relates to a hard metal or cermet body having a hard material phase of WC and at least one carbide, nitride, carbonitride or oxicarbonitride of at least one of the elements of the IVa or Va group of the periodic table and having a binder phase of Fe, Co and / or Ni whose Proportion is 3-25 mass%, with a single or multiple contiguous surfaces, with a 2-1 OO ⁇ m thick first layer below the single or at least one of the surfaces, having a binder metal content of 2-25 mass% and up to 25% by volume of nitrides or carbonitrides of one or more metals of the IVa group of the Periodic Table and / or up to 10% by volume of carbides and / or carbonitrides of V, Nb, Ta and / or Cr.
- the invention further relates to a method for producing the aforementioned body, which after sintering or during sintering has undergone a first heat treatment to produce the aforesaid layer.
- the nitrogen required for the nitroxide can be converted to the cemented carbide both by a nitrogen atmosphere used and in the form of nitrides or carbonitrides of one of the hard material carbides. be fed mixture approach.
- the sintering is introduced under vacuum so that the gradient zone formation can occur.
- the gradient zone can also be obtained by subjecting the cemented carbide, after sintering in the temperature range from about 1150 to at most 1300 ° C., to a nitrogen treatment under elevated pressure.
- the sintering of the hard metal by dewaxing to 600 ° C, holding, heating to sintering temperature and subsequent vacuum sintering at 0.1 to 100 Pa and then pressure sintering done.
- the sintered body is subjected to a pressure treatment with a nitrogen at 1 to 10 MPa and a subsequent vacuum treatment at 10 to 100 Pa.
- DE 197 52 289 C1 states that a subsequent mechanical finish machining of the substrate body for producing a final contour is accompanied by an at least partial removal of the edge zones, so that the properties of the gradient zones which are assessed to be positive are completely or partially lost again.
- DE 197 52 289 proposes to post-treat the substrate body in a vacuum at about 600-1300 ° C. for a period of up to 150 min after finish-machining.
- a surface marginal zone is formed on the machined surfaces, enriched with binder metals and free of cubic mixed carbide.
- the thickness of this view is 5-35 ⁇ m.
- the wear resistance of such carbide or cermet body is to be improved, which are used as cutting tools.
- the cemented carbide or cermet body has, beneath a 2 to 100 ⁇ m thick first layer with increased binder content and a reduced proportion of mixed carbides, a further 2 to 40 ⁇ m thick second layer which has a higher nitrogen content than the first layer and which consists essentially of nitrides and / or carbonitrides of the metals of the IVa group of the Periodic Table and phase proportions of up to 10% by volume of »carbides, nitrides, carbonitrides or oxycarbonitrides of the elements, Mo, V, Ta, Nb, Cr and / or dissolved in the hard material phase Amounts of up to 5 mass% V, Nb, Ta and up to 2 mass% Cr, Mo, W and contains up to 15 mass% binder.
- this second layer is a transition zone having a thickness of 2 to 100 ⁇ m, in which the composition gradually changes to a homogeneous composition in the interior of the core of the cemented carbide or cermet body.
- a relatively tough and abrasive resistant zone is given with high levels of WC
- underlying layer is a diffusion-resistant, hard layer with high nitride or carbonitride proportions.
- said first layer has only up to 2% by mass of carbides or carbonitrides of at least one of the metals V, Nb, Ta and / or Cr.
- the first layer has a composition consisting of 4 to 15 mass% or 7 to 22 volume% binder metal (s), 80 to 96 mass% or 66 to 93 volume% WC and 0 to 5 mass% or 0 to 12 volume% TiCN and / or TiN.
- the total amount of the aforementioned substances gives 100 mass% or 100 volume%.
- the second layer preferably has 3 to 15 mass% or 2 to 15 volume%
- the nitrogen content in said second layer is from 8 to 22 mass% when the nitrides in that layer are present exclusively as metal nitrides.
- the nitride level decreases in the presence of metal carbonitrides as nitrogen is replaced by carbon.
- the nitrogen content of the second layer is thus preferably minimized to half, ie to 4 to 22 mass%.
- the object is also achieved by a body according to claim 6.
- the binder metal enriched and mixed carbide depleted first layer has been abraded, etched away or removed by other methods on one or more surfaces so that the cemented carbide or cermet body beneath the surface in question has the layer structure of claim 3.
- the hard metal or cermet body can additionally have a single-layer or multi-layer coating on at least one surface.
- This coating may consist of carbides, nitrides, carbonitrides, oxides, oxynitrides of the elements of the IVa-Vla group of the Periodic Table, but also Al 2 O 3 , ZrO 2) HfO 2 , AlON or carbon, preferably as diamond or molybdenum or tungsten sulfides ,
- the number of additional layers applied for example by means of PVD or CVD, and the choice of layer compositions depend on the intended use.
- the process according to claim 8 is used to produce the above-described cemented carbide or cermet body.
- the cemented carbide or cermet body produced by powder metallurgy is subjected to a first heat treatment to produce a binder metal-enriched 2-100 ⁇ m thick layer and then additionally subjected to this heat treatment of a nitrogen atmosphere under a nitrogen pressure of 50 mbar (5 ⁇ 10 3 Pa) to 1 OObar (10 7 Pa) below the eutectic, preferably treated at 1000 ° C to 1200 ° C.
- the binder metal-enriched and mixed-carbide-depleted first layer remains in its composition in the Essentially unchanged.
- the first near-surface layer thus has the effect of a membrane which allows nitrogen to pass in from the outside in, while at the same time inhibiting diffusion of nitrogen-affine metals to the outside.
- this membrane-like effect occurs only in a temperature range below the eutectic, namely at 1000 to 1200 ° C.
- titanium or other nitrogen-affine metals diffuse in the direction of the substrate body surface, where they form corresponding nitrides in the near-surface edge zones.
- the nitrogen diffusion slows down, so that the desired effect of nitrogen enrichment in the second layer practically no longer occurs. Compliance with the temperature limits in the second heat treatment is thus crucial for the success of the method according to the invention.
- the resulting layer below at least one surface by grinding, etching or other methods to remove before the body in a nitrogen atmosphere under a Nitrogen pressure 5 x 10 3 Pa to 10 7 Pa below the eutectic, preferably at temperatures between 1000 ° C and 1200 ° C is treated.
- a nitrogen-enriched, 2 to 40 ⁇ m thick layer with a higher nitrogen content forms immediately below the surface.
- This method can be used, in particular, for substrate bodies which serve as cutting tools, the layer sequences a) to c) described in claim 1 being present underneath the free surface while on the chip surface. surface or at least in the region near the cutting edge of the rake surface only a layer sequence according to b) and c) or claim 3 is present.
- the life in continuous section measured by the wear mark width and the Kolktiefe could be increased by 8 to 10 times.
Landscapes
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Powder Metallurgy (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Ceramic Products (AREA)
- Adornments (AREA)
- Chemical Vapour Deposition (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL04732930T PL1664363T3 (pl) | 2003-09-12 | 2004-05-14 | Korpusy z twardych stopów lub cermetu i sposób ich wytwarzania |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10342364A DE10342364A1 (de) | 2003-09-12 | 2003-09-12 | Hartmetall-oder Cermetkörper und Verfahren zu seiner Herstellung |
| PCT/DE2004/001016 WO2005026400A1 (de) | 2003-09-12 | 2004-05-14 | Hartmetall- oder cermetkörper und verfahren zu seiner herstellung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1664363A1 true EP1664363A1 (de) | 2006-06-07 |
| EP1664363B1 EP1664363B1 (de) | 2010-08-25 |
Family
ID=34305731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04732930A Expired - Lifetime EP1664363B1 (de) | 2003-09-12 | 2004-05-14 | Hartmetall- oder cermetkörper und verfahren zu seiner herstellung |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US7544410B2 (de) |
| EP (1) | EP1664363B1 (de) |
| JP (1) | JP2007505212A (de) |
| CN (1) | CN100439535C (de) |
| AT (1) | ATE478969T1 (de) |
| DE (2) | DE10342364A1 (de) |
| PL (1) | PL1664363T3 (de) |
| WO (1) | WO2005026400A1 (de) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090029132A1 (en) * | 2005-11-17 | 2009-01-29 | Boehlerit Gmbh & Co. Kg., | Coated hard metal member |
| JP5187572B2 (ja) * | 2008-07-09 | 2013-04-24 | 三菱マテリアル株式会社 | ダイヤモンド被覆超硬合金製切削工具 |
| DE102008048967A1 (de) | 2008-09-25 | 2010-04-01 | Kennametal Inc. | Hartmetallkörper und Verfahren zu dessen Herstellung |
| US8663359B2 (en) * | 2009-06-26 | 2014-03-04 | Dimicron, Inc. | Thick sintered polycrystalline diamond and sintered jewelry |
| CN102560393B (zh) * | 2010-12-27 | 2016-04-06 | 青岛韬谱光学科技有限公司 | 镀膜件 |
| US8574728B2 (en) | 2011-03-15 | 2013-11-05 | Kennametal Inc. | Aluminum oxynitride coated article and method of making the same |
| AT510981B1 (de) * | 2011-03-18 | 2012-08-15 | Boehlerit Gmbh & Co Kg | Beschichteter körper, verwendung desselben und verfahren zu dessen herstellung |
| GB201105150D0 (en) * | 2011-03-28 | 2011-05-11 | Element Six Holding Gmbh | Cemented carbide material and tools comprising same |
| EP2725111B1 (de) * | 2011-06-27 | 2019-10-02 | Kyocera Corporation | Hartlegierung und schneidewerkzeug |
| US8834594B2 (en) | 2011-12-21 | 2014-09-16 | Kennametal Inc. | Cemented carbide body and applications thereof |
| DE102012018067A1 (de) * | 2012-09-13 | 2014-03-13 | Tutec Gmbh | Hexagonales WC-Pulver, Verfahren zu dessen Herstellung sowie Verwendung dieses Pulvers |
| US9017809B2 (en) | 2013-01-25 | 2015-04-28 | Kennametal Inc. | Coatings for cutting tools |
| US9138864B2 (en) | 2013-01-25 | 2015-09-22 | Kennametal Inc. | Green colored refractory coatings for cutting tools |
| US9427808B2 (en) | 2013-08-30 | 2016-08-30 | Kennametal Inc. | Refractory coatings for cutting tools |
| JP6327102B2 (ja) * | 2014-10-10 | 2018-05-23 | 新日鐵住金株式会社 | 超硬工具 |
| US10094005B2 (en) * | 2014-11-27 | 2018-10-09 | Kyocera Corporation | Cermet and cutting tool |
| JP6614491B2 (ja) * | 2014-12-25 | 2019-12-04 | 三菱マテリアル株式会社 | 複合焼結体切削工具および表面被覆複合焼結体切削工具 |
| CN104862637A (zh) * | 2015-05-09 | 2015-08-26 | 芜湖鼎瀚再制造技术有限公司 | Co-ZrO2-HfO2纳米涂层材料及其制备方法 |
| JP6090685B1 (ja) * | 2015-06-12 | 2017-03-08 | 株式会社タンガロイ | 超硬合金および被覆超硬合金 |
| CN105112756A (zh) * | 2015-08-12 | 2015-12-02 | 蔡婷婷 | 一种碳氮化钛复合氧化铝金属陶瓷刀具材料及其制备方法 |
| CN106312048A (zh) * | 2016-09-18 | 2017-01-11 | 广东工业大学 | 一种金属陶瓷颗粒及其制备方法与应用 |
| US12296393B2 (en) | 2023-05-04 | 2025-05-13 | Kennametal Inc. | Aluminum oxynitride coatings with enhanced crystallinity |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2717842C2 (de) * | 1977-04-22 | 1983-09-01 | Fried. Krupp Gmbh, 4300 Essen | Verfahren zur Oberflächenbehandlung von gesinterten Hartmetallkörpern |
| JPS60238481A (ja) * | 1984-05-14 | 1985-11-27 | Sumitomo Electric Ind Ltd | 多重層被覆超硬合金 |
| US4990410A (en) * | 1988-05-13 | 1991-02-05 | Toshiba Tungaloy Co., Ltd. | Coated surface refined sintered alloy |
| JPH02131803A (ja) * | 1988-11-11 | 1990-05-21 | Mitsubishi Metal Corp | 耐欠損性のすぐれた耐摩耗性サーメット製切削工具 |
| JPH0711048B2 (ja) * | 1988-11-29 | 1995-02-08 | 東芝タンガロイ株式会社 | 高強度窒素含有サーメット及びその製造方法 |
| JP2985300B2 (ja) * | 1990-12-25 | 1999-11-29 | 三菱マテリアル株式会社 | 硬質層被覆サーメット |
| US5856032A (en) * | 1994-05-03 | 1999-01-05 | Widia Gmbh | Cermet and process for producing it |
| US5750247A (en) * | 1996-03-15 | 1998-05-12 | Kennametal, Inc. | Coated cutting tool having an outer layer of TiC |
| DE19752289C1 (de) * | 1997-11-26 | 1999-04-22 | Hartmetall Beteiligungs Gmbh | Gesinterter Hartmetall-Formkörper |
| DE19922057B4 (de) * | 1999-05-14 | 2008-11-27 | Widia Gmbh | Hartmetall- oder Cermet-Körper und Verfahren zu seiner Herstellung |
| US6110603A (en) * | 1998-07-08 | 2000-08-29 | Widia Gmbh | Hard-metal or cermet body, especially for use as a cutting insert |
| DE10225521A1 (de) * | 2002-06-10 | 2003-12-18 | Widia Gmbh | Hartmetall-Substratkörper und Verfahren zu dessen Herstellung |
-
2003
- 2003-09-12 DE DE10342364A patent/DE10342364A1/de not_active Withdrawn
-
2004
- 2004-05-14 US US10/572,000 patent/US7544410B2/en not_active Expired - Fee Related
- 2004-05-14 WO PCT/DE2004/001016 patent/WO2005026400A1/de not_active Ceased
- 2004-05-14 PL PL04732930T patent/PL1664363T3/pl unknown
- 2004-05-14 JP JP2006525609A patent/JP2007505212A/ja not_active Ceased
- 2004-05-14 EP EP04732930A patent/EP1664363B1/de not_active Expired - Lifetime
- 2004-05-14 AT AT04732930T patent/ATE478969T1/de active
- 2004-05-14 CN CNB2004800170079A patent/CN100439535C/zh not_active Expired - Fee Related
- 2004-05-14 DE DE502004011588T patent/DE502004011588D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005026400A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20070042222A1 (en) | 2007-02-22 |
| DE502004011588D1 (de) | 2010-10-07 |
| JP2007505212A (ja) | 2007-03-08 |
| DE10342364A1 (de) | 2005-04-14 |
| US7544410B2 (en) | 2009-06-09 |
| ATE478969T1 (de) | 2010-09-15 |
| EP1664363B1 (de) | 2010-08-25 |
| PL1664363T3 (pl) | 2011-02-28 |
| WO2005026400A1 (de) | 2005-03-24 |
| CN1820089A (zh) | 2006-08-16 |
| CN100439535C (zh) | 2008-12-03 |
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