SE519903C2 - Cutting tool insert used for wet and dry milling of low and medium alloyed steels and stainless steels, comprises cemented carbide body and coating - Google Patents
Cutting tool insert used for wet and dry milling of low and medium alloyed steels and stainless steels, comprises cemented carbide body and coatingInfo
- Publication number
- SE519903C2 SE519903C2 SE9904274A SE9904274A SE519903C2 SE 519903 C2 SE519903 C2 SE 519903C2 SE 9904274 A SE9904274 A SE 9904274A SE 9904274 A SE9904274 A SE 9904274A SE 519903 C2 SE519903 C2 SE 519903C2
- Authority
- SE
- Sweden
- Prior art keywords
- coating
- cemented carbide
- layers
- mum
- thickness
- Prior art date
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 44
- 239000011248 coating agent Substances 0.000 title claims abstract description 41
- 229910000831 Steel Inorganic materials 0.000 title claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 title claims description 4
- 239000010959 steel Substances 0.000 title claims description 4
- 238000005520 cutting process Methods 0.000 title abstract description 25
- 238000009837 dry grinding Methods 0.000 title 1
- 238000001238 wet grinding Methods 0.000 title 1
- 239000011230 binding agent Substances 0.000 claims abstract description 12
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 6
- 229910052593 corundum Inorganic materials 0.000 claims abstract 2
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract 2
- 229910052799 carbon Inorganic materials 0.000 claims description 21
- 229910052757 nitrogen Inorganic materials 0.000 claims description 16
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 14
- 238000003801 milling Methods 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 4
- 239000002826 coolant Substances 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 abstract description 7
- 239000010941 cobalt Substances 0.000 abstract description 4
- 229910017052 cobalt Inorganic materials 0.000 abstract description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract description 4
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 abstract description 2
- 239000010955 niobium Substances 0.000 abstract 2
- 229910003468 tantalcarbide Inorganic materials 0.000 abstract 2
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- UNASZPQZIFZUSI-UHFFFAOYSA-N methylidyneniobium Chemical compound [Nb]#C UNASZPQZIFZUSI-UHFFFAOYSA-N 0.000 abstract 1
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 abstract 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 abstract 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 32
- 239000000758 substrate Substances 0.000 description 26
- 239000010936 titanium Substances 0.000 description 21
- 239000000203 mixture Substances 0.000 description 8
- 229910052719 titanium Inorganic materials 0.000 description 8
- 238000005245 sintering Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- 229910009043 WC-Co Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 150000001247 metal acetylides Chemical class 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000002173 cutting fluid Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
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- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
- C23C28/044—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material coatings specially adapted for cutting tools or wear applications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
- B23B27/148—Composition of the cutting inserts
-
- 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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
-
- 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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/32—Carbides
-
- 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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/34—Nitrides
-
- 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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/36—Carbonitrides
-
- 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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/40—Oxides
- C23C16/403—Oxides of aluminium, magnesium or beryllium
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Chemical Vapour Deposition (AREA)
Abstract
Description
20 25 30 35 40 45 50 519 903 2 WO 97/20081 beskriver ett belagt frässkär speciellt an- vändbart för fräsning i låg- och mediumlegerade stål, med el- ler utan råytor samt med eller utan kylvätska. Skäret känne- tecknas av en WC-Co hårdmetall med ett lågt innehåll av ku- biska karbider och en bindefas med hög W-inlösning och en be- läggning bestående av ett inre skikt av Ti(C¿¶0Z) med kolum- nära korn, därpå ett skikt av K-A120; och, företrädesvis, ett yttersta skikt av TiN. WO 25/20081 WO 97/20081 describes a coated milling cutter particularly useful for milling in low- and medium-alloy steels, with or without raw surfaces and with or without coolant. The insert is characterized by a WC-Co cemented carbide with a low content of cubic carbides and a binder phase with high W redemption and a coating consisting of an inner layer of Ti (C¿¶0Z) with column-close grains , then a layer of K-Al 2 O; and, preferably, an outermost layer of TiN.
WO 97/20082 beskriver ett belagt svarvskär speciellt an- vändbart för svarvning i rostfritt stål. Skäret kännetecknas av ett WC-Co-baserat hårdmetallsubstrat med en bindefas med hög W-inlösning och en beläggning bestående av ett inre skikt av Ti(CQ@Oz) med kolumnära korn följt av ett skikt av finkor- nig K-Algh och ett yttersta skikt av TiN.WO 97/20082 describes a coated turning insert particularly useful for turning in stainless steel. The insert is characterized by a WC-Co-based cemented carbide substrate with a binder phase with high W solution and a coating consisting of an inner layer of Ti (CQ @ Oz) with columnar grains followed by a layer of fine-grained K-Algh and an outermost layer of TiN.
US 5,700,569 beskriver ett aluminiumoxidbelagt hårdme- tallskär med förbättrade egenskaper för skärande bearbetning.US 5,700,569 describes an alumina coated cemented carbide insert with improved cutting machining properties.
Skäret har sex till åtta skikt av aluminiumoxid med en total beläggningstjocklek av upp till omkring 15 um.The insert has six to eight layers of alumina with a total coating thickness of up to about 15 microns.
US 4,984,94O beskriver ett vändskär avsett för metallbe- arbetning med ett WC-Co hårdmetallsubstrat med en värmebestän- dig multiskiktsbeläggning därpå. Substratet har ett koboltin- nehåll av 6,1 till 6,5 viktsprocent. Beläggningen innehåller ett flertal aluminiumoxidskikt vilka är åtskilda från och bundna till varandra genom en nitrid med ett grundämne från grupp IVb, såsom titannitrid, och som är bundna till substra- tet av ett grundskikt, 5 till 8 um i tjocklek, sammansatt av en karbid och/eller karbonitrid av titan, zirkonium och/eller hafnium.US 4,984,94O describes a indexable insert intended for metalworking with a WC-Co cemented carbide substrate with a heat-resistant multilayer coating thereon. The substrate has a cobalt content of 6.1 to 6.5% by weight. The coating contains a plurality of alumina layers which are separated from and bonded to each other by a nitride having a Group IVb element, such as titanium nitride, and which are bonded to the substrate by a base layer, 5 to 8 μm in thickness, composed of a carbide and / or carbonitride of titanium, zirconium and / or hafnium.
Det har nu visat sig att förbättrade egenskaper vid fräs- ning kan erhållas vid kombinerande av substrat och multi- skiktbeläggning beskrivna i föreliggande uppfinning. Skäret har utomordentliga prestanda i låg- och mediumlegerade stål men framförallt i rostfritt stål. Detta skärverktyg uppvis- ningar bättre egenskaper med avseende på flera av de tidigare nämnda förslitningstyperna, särskilt uppkomst av termospric- kor.It has now been found that improved milling properties can be obtained by combining substrates and multilayer coatings described in the present invention. The insert has excellent performance in low- and medium-alloy steels, but above all in stainless steel. This cutting tool exhibits better properties with respect to several of the previously mentioned types of wear, especially the appearance of thermal cracks.
Fig l är ett strukturfoto i 5000X förstoring av ett be- lagt skär enligt föreliggande uppfinning i vilket a ~ substrat b - MTCVD beläggning med kolumnära korn c - multiskiktsbeläggning Skäret enligt föreliggande uppfinning består av: ett hårdmetallsubstrat med en relativt låg mängd av kubiska karbi- der, med en bindefas med medelhög till hög inlösning av W och med fin till medelgrov kornstorlek. Substratet är försett med en multiskiktsbeläggning.Fig. 1 is a structural view in 5000X magnification of a coated insert according to the present invention in which a ~ substrate b - MTCVD coating with columnar grains c - multilayer coating The insert according to the present invention consists of: a cemented carbide substrate with a relatively low amount of cubic carbide. there, with a binder phase with medium to high redemption of W and with fine to medium coarse grain size. The substrate is provided with a multilayer coating.
Enligt föreliggande uppfinning föreligger ett belagt skär bestående av en hårdmetallkropp med en sammansättning av 9,0- 10,9 vikt-%, företrädesvis 9,5-lO,7 vikt-%, helst 9,9-10,5 vikt-% Co, 0,5-2,5 vikt-%, företrädesvis 1,0-2,0 vikt-%, helst W U 20 25 30 35 40 45 519 903 3 1,2-1,8 vikt-% total mängd kubiska karbider av metallerna Ti, Nb och Ta och rest WC. Ti, Ta och/eller Nb kan även ersättas av andra karbidbildande element från grupperna IVb, Vb eller VIb i det periodiska systemet. Innehållet av Ti är helst på en nivå motsvarande teknisk förorening. Förhållandet mellan vikt- koncentrationerna av Ta och Nb är inom 7,0-12,0, företrädesvis 7,6-11,4, helst 8,2-10,5.According to the present invention there is a coated insert consisting of a cemented carbide body with a composition of 9.0-10.9% by weight, preferably 9.5-10.0% by weight, most preferably 9.9-10.5% by weight Co 0.5-2.5% by weight, preferably 1.0-2.0% by weight, more preferably 1.2-1.8% by weight total amount of cubic carbides of the metals Ti, Nb and Ta and erected WC. Ti, Ta and / or Nb can also be replaced by other carbide-forming elements from groups IVb, Vb or VIb in the periodic table. The content of Ti is preferably at a level corresponding to technical pollution. The ratio between the weight concentrations of Ta and Nb is within 7.0-12.0, preferably 7.6-11.4, most preferably 8.2-10.5.
Koboltbindefasen har medelhög till hög inlösning av vol- fram. Innehållet av W i bindefasen kan vara uttryckt som S- värdet = 6/ 16,1, där 6 är uppmätt magnetiskt moment i binde- fasen i pTm3kg'1. S-värdet beror på innehållet av volfram i bindefasen och ökar med ett minskande volframinnehåll. För ren kobolt, eller för en bindefas som är mättad med kol, gäller att S=1 och för en bindefas som innehåller W i en sådan mängd att det motsvarar gränsen till bildning av n-fas gäller att S=O,78.The cobalt binder phase has medium to high redemption of tungsten. The content of W in the binding phase can be expressed as the S-value = 6 / 16.1, where 6 is measured magnetic moment in the binding phase in pTm3kg'1. The S-value depends on the content of tungsten in the binder phase and increases with a decreasing tungsten content. For pure cobalt, or for a binder phase saturated with carbon, S = 1 and for a binder phase containing W in such an amount that it corresponds to the limit for the formation of n-phase, S = 0, 78.
Enligt föreliggande uppfinning har det nu visat sig att förbättrade skärprestanda åstadkommes om hårdmetallkroppen har ett S-värde inom området 0,81-0,92, företrädesvis 0,82-0,90, helst 0,85-0,89.According to the present invention, it has now been found that improved cutting performance is achieved if the cemented carbide body has an S-value in the range 0.81-0.92, preferably 0.82-0.90, most preferably 0.85-0.89.
Vidare är kornstorleken hos volframkarbidfasen uttryckt som medelinterceptlängd uppmätt på ett slipat och polerat re- presentativt tvärsnitt i området 0,5-0,9 pm, företrädesvis 0,6- O,8 um. Medelinterceptlängden är mätt med hjälp av bildanalys på bilder med en förstoring av 10000x och beräknat som medel- värdet av ungefär 1000 interceptlängder.Furthermore, the grain size of the tungsten carbide phase is expressed as the mean intercept length measured on a ground and polished representative cross section in the range 0.5-0.9 μm, preferably 0.6-0.8 μm. The average intercept length is measured using image analysis on images with a magnification of 10000x and calculated as the average value of approximately 1000 intercept lengths.
Beläggningen består av ett inre 2-6 um, företrädesvis 3 um, skikt av MTCVD Ti(C,N) och en K-Algh-TiN/Ti(C,N) multis- kiktsbeläggning.The coating consists of an inner 2-6 μm, preferably 3 μm, layer of MTCVD Ti (C, N) and a K-Algh-TiN / Ti (C, N) multilayer coating.
Denna multiskiktsbeläggning är sammansatt av en koldopad TiN-matris framställd med CVD-teknik (innehållande företrädes- vis mindre än 5 % kol) eller MTCVD Ti(C,N)- matris där tunna K- Algb-skikt är inbäddade.This multilayer coating is composed of a carbon-doped TiN matrix prepared by CVD technology (preferably containing less than 5% carbon) or MTCVD Ti (C, N) matrix in which thin K-Algb layers are embedded.
Multiskiktsbeläggningen är sammansatt av K-Al2O3-skikt med en tjocklek av 0,1-0,4 um, företrädesvis 0,2-0,3 pm och TiN- eller Ti(C,N)-skikt med en tjocklek av 0,3-0,6 um, företrädes- vis omkring 0,4 um. Det första och det sista lagret i multi- skiktsbeläggningen är ett K-A143 skikt. Ett TiN-skikt < 1 um kan deponeras ovanpå det yttersta K- A133-skiktet. Den totala tjockleken av multiskiktsbeläggningen kan vara från 2 um (to- talt: sju individuella skikt) till 20 pm (totalt: 41 individu- ella skikt). Tunnare beläggning är att föredra vid tillämp- ningar med stort behov av seghet. Den tjockare beläggningen är för tillämpningar där hög slitstyrka behövs.The multilayer coating is composed of K-Al 2 O 3 layers with a thickness of 0.1-0.4 μm, preferably 0.2-0.3 μm and TiN or Ti (C, N) layers with a thickness of 0.3 -0.6 μm, preferably about 0.4 μm. The first and last layer in the multilayer coating is a K-A143 layer. A TiN layer <1 μm can be deposited on top of the outermost K-A133 layer. The total thickness of the multilayer coating can be from 2 μm (total: seven individual layers) to 20 μm (total: 41 individual layers). Thinner coating is preferred in applications with a high need for toughness. The thicker coating is for applications where high wear resistance is needed.
I en föredragen utföringsform bör multiskikts-beläggning- ens tjocklek vara från 2 till 5 um, företrädesvis från 2,5 till 3,5 pm sammansatt av 4-6 koldopade TiN-skikt och 5-7 K- Aljfi skikt.In a preferred embodiment, the thickness of the multilayer coating should be from 2 to 5 μm, preferably from 2.5 to 3.5 μm composed of 4-6 carbon doped TiN layers and 5-7 K-Al 2+ layers.
B 20 25 30 ä 40 45 519 903 4 Belagda hårdmetallskär enligt uppfinningen tillverkas med en sammansättning av 9,0-10,9 vikt-%, företrädesvis 9,5-10,7 vikt-%, helst 9,9-10,5 vikt-% Co, 0,5-2,5 vikt-%, företrädes- vis 1,0-2,0 vikt-%, helst 1,2-1,8 vikt-% total mängd kubiska karbider av metallerna Ti, Nb och Ta och rest WC. Ti, Ta och/eller Nb kan även ersättas av andra karbidbildande element från grupperna IVb, Vb eller VIb i det periodiska systemet.Coated cemented carbide inserts according to the invention are manufactured with a composition of 9.0-10.9% by weight, preferably 9.5-10.7% by weight, most preferably 9.9-10.5 wt% Co, 0.5-2.5 wt%, preferably 1.0-2.0 wt%, most preferably 1.2-1.8 wt% total cubic carbides of the metals Ti, Nb and Take and travel WC. Ti, Ta and / or Nb can also be replaced by other carbide-forming elements from groups IVb, Vb or VIb in the periodic table.
Innehållet av Ti är helst på en nivå motsvarande en teknisk förorening. Förhållandet mellan viktkoncentrationerna av Ta och Nb är inom 7,0-12,0, företrädesvis 7,6-11,4, helst 8,2- 10,5.The content of Ti is preferably at a level corresponding to a technical contamination. The ratio between the weight concentrations of Ta and Nb is within 7.0-12.0, preferably 7.6-11.4, most preferably 8.2-10.5.
Den önskade medelinterceptlängden beror på kornstorleken hos ingående råvara och på malnings- och sintringsbetingelser och måste bestämmas experimentellt. Det önskade S-värdet beror på ingående råvara och sintringsbetingelser som måste bestäm- mas experimentellt.The desired average intercept length depends on the grain size of the raw material included and on grinding and sintering conditions and must be determined experimentally. The desired S-value depends on the raw material and sintering conditions that must be determined experimentally.
Ovanpå hårdmetallen deponeras ett första skikt av Ti(C,N) med MTCVD-teknik med användning av acetonitril som kol- och kvävekälla för bildande av skikt i temperaturintervallet 700- 900 °C.A first layer of Ti (C, N) is deposited on top of the cemented carbide with MTCVD technology using acetonitrile as a carbon and nitrogen source to form layers in the temperature range 700-900 ° C.
Ovanpå detta skikt deponeras därefter en multiskikt- beläggning bestående av omväxlande skikt av K-Alflä och kol- dopad TiN eller MTCVD-Ti(C,N). Aluminiumoxidskikten deponeras enligt känd teknik. Koldopat TiN-skikt är deponerat enligt känd teknik.A multilayer coating consisting of alternating layers of K-Al fl ä and carbon-doped TiN or MTCVD-Ti (C, N) is then deposited on top of this layer. The alumina layers are deposited according to known techniques. Carbon-doped TiN layers are deposited according to known technology.
Exempel Följande kombinationer av substrat och skikt valdes som exempel att demonstrera uppfinningen mera i detalj: Sort Substrat I A(uppfinning) X(känd teknik) II B(uppfinning) X(känd teknik) III A(uppfinning) Y(uppfinning) IV A(uppfinning) Z(känd teknik) Beläggning Substrat A: Ett hårdmetallsubstrat i enlighet med uppfin- ningen med sammansättningen 10,2 vikt-% Co, 1,35 vikt-% TaC, 0,15 vikt-% NbC och rest WC, med en bindefas legerad med W motsvarande ett S-värde av 0,87 framställdes genom konventio- nell malning av pulver, pressning av presskroppar följda av sintring vid 1430°C. Undersökning av mikrostrukturen efter sintring visade att medelinterceptlängden hos volframkarbidfa- sen var 0,7 um. Efter sintring slipades och eggbehandlades skä- ren .Examples The following combinations of substrates and layers were chosen as examples to demonstrate the invention in more detail: Variety Substrate IA (invention) X (prior art) II B (invention) X (prior art) III A (invention) Y (invention) IV A ( invention) Z (prior art) Coating Substrate A: A cemented carbide substrate according to the invention having the composition 10.2 wt% Co, 1.35 wt% TaC, 0.15 wt% NbC and residual WC, with a binder phase alloyed with W corresponding to an S-value of 0.87 was prepared by conventional grinding of powder, pressing of compacts followed by sintering at 1430 ° C. Examination of the microstructure after sintering showed that the mean intercept length of the tungsten carbide phase was 0.7 μm. After sintering, the inserts were ground and edge treated.
Substrat B: Ett hårdmetallsubstrat i enlighet med uppfin- ningen med sammansättningen 9,7 vikt-% Co, 1,35 vikt-% TaC och 0,15 vikt-% NbC och rest WC, med en bindefas legerad med W motsvarande ett S-värde av 0,89 framställdes i analogi med W U 20 25 30 35 40 45 (11 519 903 substrat A ovan. Mikrostrukturen visade att medelintercept- längden hos volframkarbidfasen var 0,8 pm.Substrate B: A cemented carbide substrate according to the invention having the composition 9.7% by weight of Co, 1.35% by weight of TaC and 0.15% by weight of NbC and residual WC, with a binder phase alloyed with W corresponding to an S- value of 0.89 was prepared in analogy to WU 20 25 substrate 40 45 (11 519 903 substrate A above. The microstructure showed that the mean intercept length of the tungsten carbide phase was 0.8 μm.
Beläggning X (känd teknik): 5 pm MTCVD Ti(C,N)+1 pm K-Alfih singelskikt deponerat ytterst.Coating X (prior art): 5 μm MTCVD Ti (C, N) +1 μm K-Al fi h single layer deposited on the outside.
Beläggning Y (uppfinning): 3 pm MTCVD Ti(C,N) + 3 pm mul- tiskiktsbeläggning bestående av fyra koldopade TiN-skikt och fem K-Algh, Fig.1. Detta skiktet deponerades med användning av tidigare känd teknik. (känd teknik): 3 pm Ti(C,N) +3 pm multi- skiktsbeläggning bestående av fyra K- Al2O3 och fem TiN-skikt där K-Alflh dominerar enligt tidigare känd teknik. K-Al$h-skik- tet hade en tjocklek av 0,7 pm. Denna beläggning var deponerad enligt US 5,700,569 OCh US 5,l37,774.Coating Y (invention): 3 μm MTCVD Ti (C, N) + 3 μm multilayer coating consisting of four carbon-doped TiN layers and five K-Algh, Fig.1. This layer was deposited using prior art. (prior art): 3 μm Ti (C, N) + 3 μm multilayer coating consisting of four K-Al 2 O 3 and five TiN layers where K-Al fl h dominates according to the prior art. The K-Al $ h layer had a thickness of 0.7 μm. This coating was deposited according to US 5,700,569 AND US 5,137,774.
Beläggning Z Exempel 1 Sort V.(känd teknik) Ett hårdmetallskär med samman-sätt- ningen 9 vikt-% Co, 0,45 vikt-% TaC och 0,05 vikt-% NbC rest WC och ett S-värde av 0,98 och med en sintrad medelinter- ceptlängd hos volframkarbidfasen av 1,2 pm. Beläggningen av skäret var en konventionell CVD-beläggning bestående av Ti(C,N)/TiC/TiN med totaltjockleken 5,0 pm.Coating Z Example 1 Sort V. (prior art) A cemented carbide insert with the composition 9 wt% Co, 0.45 wt% TaC and 0.05 wt% NbC residual WC and an S value of 0, 98 and with a sintered mean intercept length of the tungsten carbide phase of 1.2 μm. The coating of the insert was a conventional CVD coating consisting of Ti (C, N) / TiC / TiN with a total thickness of 5.0 μm.
Operation: Planfräsning, verktygsdiameter 125 mm Arbetsstycke: Fyrkantstång, 600 mm x 70 mm Material: SS2244 Skärtyp: SEKNl203AFTN Skärhastighet: 200 m/min Mätning: 0,2 mm/tand Axiellt skärdjup: 2,5 mm Radiellt skärdjup: 70 mm Anmärkning: Entandsfräsning, kylning med skärvätska Resultat: Livslängd (min): Sort I 47 (substrat enl. uppfinning) Sort II 40 (substrat enl. uppfinning) Sort V 24 (känd teknik) Livslängdskriterium var nedbrytning av skäreggen orsakad av tillväxt av termosprickor. Provresultatet visar att hårdme- tallsubstratet enligt uppfinningen uppvisar längre livslängd än tidigare känd sort.Operation: Face milling, tool diameter 125 mm Workpiece: Square bar, 600 mm x 70 mm Material: SS2244 Cutting type: SEKNl203AFTN Cutting speed: 200 m / min Measurement: 0.2 mm / tooth Axial cutting depth: 2.5 mm Radial cutting depth: 70 mm Remark: Single-tooth milling, cooling with cutting fluid Result: Lifespan (min): Type I 47 (substrate according to the invention) Type II 40 (substrate according to the invention) Type V 24 (prior art) Lifetime criterion was degradation of the cutting edge caused by growth of thermal cracks. The test result shows that the cemented carbide substrate according to the invention has a longer service life than the previously known variety.
Exempel 2 Sort VI.(känd teknik) Ett hàrdmetallskär från en starkt ledande konkurrent valdes for jämförelse i ett fräsprov. Hård- metallen hade en sammansättning av 9,2 vikt~% Co, 0,1 vikt-% TiC, 1,3 vikt-% TaC och 0,3 vikt-% NbC rest WC. Skäret har en beläggning bestående av Ti(C,N)/A143/TiN med en totaltjocklek av 5,9 pm.Example 2 Type VI (prior art) A cemented carbide insert from a highly conductive competitor was selected for comparison in a milling sample. The cemented carbide had a composition of 9.2% by weight of Co, 0.1% by weight of TiC, 1.3% by weight of TaC and 0.3% by weight of NbC residual WC. The insert has a coating consisting of Ti (C, N) / A143 / TiN with a total thickness of 5.9 μm.
W Ü 20 25 30 35 40 45 50 519 903 6 Sort VII.(känd teknik) Ett hàrdmetallskär från en starkt ledande konkurrent valdes for jämförelse i ett fräsprov. Hård- metallen hade en sammansättning av ll,5 vikt-% Co, 0,3 vikt-% TiC, 1,3 vikt-% TaC och 0,3 vikt-% NbC rest WC. Skäret har en beläggning bestående av Ti(C,N)/A120;/TiN med en totaltjocklek av 6,5 pm.W Ü 20 25 30 35 40 45 50 519 903 6 Type VII. (Prior art) A cemented carbide insert from a highly conductive competitor was selected for comparison in a milling test. The cemented carbide had a composition of 11.5% by weight of Co, 0.3% by weight of TiC, 1.3% by weight of TaC and 0.3% by weight of NbC residual WC. The insert has a coating consisting of Ti (C, N) / Al 2 O; / TiN with a total thickness of 6.5 μm.
Operation: Planfräsning Arbetsstycke: Fyrkantstàng, 600 mm x 26 mm Material: SS2244 Skärtyp: SEKNl203AFTN Skärhastighet: 200 m/min Mätning: 0,2 mm/tand Axiellt skärdjup: 2,5 mm Radiellt skärdjup: 26 mm Anmärkning: Entandsfräsning, kylning med skärvätska.Operation: Face milling Workpiece: Square bar, 600 mm x 26 mm Material: SS2244 Cutting type: SEKNl203AFTN Cutting speed: 200 m / min Measurement: 0.2 mm / tooth Axial cutting depth: 2.5 mm Radial cutting depth: 26 mm Remark: Single tooth milling, cooling with cutting fluid.
Resultat: Livslängd (min): Sort I 30 (substrat enl. uppfinning) Sort VI 20 (känd teknik) Sort VII 26 (känd teknik) Livslängdskriterium var nedbrytning av skäreggen orsakad av tillväxt av termiska och mekaniska sprickor. I detta prov var alla beläggningar av liknande typ varfor skillnaden huvud- sakligen låg i hårdmetallens sammansättning. Provresultatet visar att hårdmetallsubstratet enligt uppfinningen uppvisar längre livslängd än två viktiga konkurrentsorter innehållande mindre respektive mera bindefas än uppfinningen.Result: Lifespan (min): Type I 30 (substrate according to the invention) Type VI 20 (prior art) Type VII 26 (prior art) Lifetime criterion was degradation of the cutting edge caused by growth of thermal and mechanical cracks. In this test, all coatings were of a similar type, so the difference was mainly in the composition of the cemented carbide. The test result shows that the cemented carbide substrate according to the invention has a longer service life than two important competitor types containing less and more binder phase, respectively, than the invention.
Exempel 3 Operation: Planfräsning Arbetsstycke: Fyrkantstàng, 600 mm x 70 mm Material: SS254l Skärtyp: SEKNl203AFTN Skärhastighet: 300 m/min Mätning: 0,2 mm/tand Axiellt skärdjup: 2,5 mm Radiellt skärdjup: 70 mm Anmärkning: Entandsfräsning, ingen kylvätska.Example 3 Operation: Face milling Workpiece: Square bar, 600 mm x 70 mm Material: SS254l Cutting type: SEKNl203AFTN Cutting speed: 300 m / min Measurement: 0.2 mm / tooth Axial cutting depth: 2.5 mm Radial cutting depth: 70 mm Remark: Single tooth milling, no coolant.
Resultat: Livslängd (min.): Sort I 19 (substrat enl. uppfinning) Sort III 28 (uppfinning) Sort IV 23 (substrat enl. uppfinning) Livslängdskriterium var fasforslitning i kombination med tillväxt av termosprickor. Provresultatet visar att hàrd-me- tallverktyget enligt uppfinningen uppvisar längre livslängd än W Ü 20 samma substrat belagt med två olika sla känd teknik.Result: Service life (min.): Type I 19 (substrate according to the invention) Type III 28 (invention) Type IV 23 (substrate according to the invention) Service life criterion was phase wear in combination with the growth of thermal cracks. The test result shows that the hard metal tool according to the invention has a longer service life than the same substrate coated with two different known techniques.
Exempel 4 Operation: Arbetsstycke: Material: Skärtyp: Skärhastighet: Matning: Axiellt skärdjup: Radiellt skärdjup: Anmärkning: Resultat: Sort I Sort III Sort IV Livslängdskriterium var ytfinhet hos arbetsstycket. resultatet visar att hàrdmetallverktyget enligt uppfinningen uppvisar längre livslängd än både en tidigare känd sort och ett nårdmetallverktyg med ett substrat enli 519 903 v Planfräsning Gjuten detalj för flygmaskin SS2377, 1400 MPa SEKNl504AFTN 80 m/min 0,16 mm/tand 6 mm max 200 mm Fräsning med kylvätska Livslängd (min): 68 (substrat enl. uppfinning) 100 (uppfinning) 75 (känd teknik) med en tidigare känd beläggning. gs beläggningar enligt gt uppfinningen menExample 4 Operation: Workpiece: Material: Cutting type: Cutting speed: Feed: Axial cutting depth: Radial cutting depth: Remark: Result: Type I Type III Type IV Lifetime criterion was surface finish of the workpiece. the result shows that the cemented carbide tool according to the invention has a longer service life than both a previously known variety and a precious metal tool with a substrate according to 519 903 v Milling casting part for aircraft SS2377, 1400 MPa SEKN1504AFTN 80 m / min 0.16 mm / tooth 6 mm max 200 mm Coolant milling Lifespan (min): 68 (substrate according to the invention) 100 (invention) 75 (prior art) with a prior art coating. gs coatings according to the gt invention but
Claims (1)
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9904274A SE519903C2 (en) | 1999-11-25 | 1999-11-25 | Cutting tool insert used for wet and dry milling of low and medium alloyed steels and stainless steels, comprises cemented carbide body and coating |
| AT00125483T ATE273405T1 (en) | 1999-11-25 | 2000-11-21 | COATED CUTTING INSERT FOR MILLING AND TURNING APPLICATIONS |
| EP00125483A EP1103635B1 (en) | 1999-11-25 | 2000-11-21 | Coated cutting insert for milling and turning applications |
| DE60012850T DE60012850T2 (en) | 1999-11-25 | 2000-11-21 | Coated cutting insert for milling and turning applications |
| US09/717,006 US6632514B1 (en) | 1999-11-25 | 2000-11-22 | Coated cutting insert for milling and turning applications |
| IL13986600A IL139866A (en) | 1999-11-25 | 2000-11-23 | Coated cemented carbide cutting tool insert |
| JP2000359158A JP2001205505A (en) | 1999-11-25 | 2000-11-27 | Coated cutting insert for application to milling and lathing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9904274A SE519903C2 (en) | 1999-11-25 | 1999-11-25 | Cutting tool insert used for wet and dry milling of low and medium alloyed steels and stainless steels, comprises cemented carbide body and coating |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE9904274D0 SE9904274D0 (en) | 1999-11-25 |
| SE9904274L SE9904274L (en) | 2001-05-26 |
| SE519903C2 true SE519903C2 (en) | 2003-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE9904274A SE519903C2 (en) | 1999-11-25 | 1999-11-25 | Cutting tool insert used for wet and dry milling of low and medium alloyed steels and stainless steels, comprises cemented carbide body and coating |
Country Status (1)
| Country | Link |
|---|---|
| SE (1) | SE519903C2 (en) |
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1999
- 1999-11-25 SE SE9904274A patent/SE519903C2/en unknown
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| Publication number | Publication date |
|---|---|
| SE9904274D0 (en) | 1999-11-25 |
| SE9904274L (en) | 2001-05-26 |
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