SE511089C2 - Cutting tool insert for turning steel - Google Patents

Cutting tool insert for turning steel

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Publication number
SE511089C2
SE511089C2 SE9602413A SE9602413A SE511089C2 SE 511089 C2 SE511089 C2 SE 511089C2 SE 9602413 A SE9602413 A SE 9602413A SE 9602413 A SE9602413 A SE 9602413A SE 511089 C2 SE511089 C2 SE 511089C2
Authority
SE
Sweden
Prior art keywords
layer
cemented carbide
coating
insert
weight
Prior art date
Application number
SE9602413A
Other languages
Swedish (sv)
Other versions
SE9602413D0 (en
SE9602413L (en
Inventor
Per Lindskog
Per Gustafson
Bjoern Ljungberg
Aake Oestlund
Original Assignee
Sandvik Ab
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 Sandvik Ab filed Critical Sandvik Ab
Priority to SE9602413A priority Critical patent/SE511089C2/en
Publication of SE9602413D0 publication Critical patent/SE9602413D0/en
Priority to US09/077,424 priority patent/US6200671B1/en
Priority to EP96941282A priority patent/EP0874919B1/en
Priority to IL12447596A priority patent/IL124475A/en
Priority to KR10-1998-0704051A priority patent/KR100432108B1/en
Priority to AT96941282T priority patent/ATE213283T1/en
Priority to CN96198661A priority patent/CN1203637A/en
Priority to JP09520425A priority patent/JP2000515588A/en
Priority to US11/483,380 priority patent/USRE39999E1/en
Priority to PCT/SE1996/001578 priority patent/WO1997020082A1/en
Priority to BR9611781A priority patent/BR9611781A/en
Priority to DE69619275T priority patent/DE69619275T2/en
Publication of SE9602413L publication Critical patent/SE9602413L/en
Publication of SE511089C2 publication Critical patent/SE511089C2/en

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Classifications

    • 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
    • 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
    • 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

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  • 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)
  • Chemical Vapour Deposition (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

A cutting tool insert comprises: (a) a cemented carbide body of WC, 6-15 (9-12) weight % Co and 0.2-1.8 weight % cubic carbides of Ti, Ta and/or Nb, and a highly W-alloyed hinder phase with a CW ratio of 0.78-0.93 (0.8-0.91); and (b) a coating comprising an innermost TiCxNyO2 1.5~mm thick with equiaxed grains 0.5~mm, a 2-5~mm thick TiCxNyO2 layer with columnar grains with an average diameter 5~mm, and an outer layer of smooth fine-grained (0.5-2 ~mm) k-Al2O3 0.5-6 ~mm thick. The manufacture of the insert is also claimed and comprises forming the innermost layer of TiCxNyO2 by known CVD methods (x+y+2=1, z0.5) to a thickness of 0.1-1.5~mm, forming the 2nd TiCxNyO2 layer by MTCVD using acetonitrile as the C and N source at 850-900 deg.C (x+y+z=1, 2 = preferably 0, x>0.3 and y>0.3, and forming a TiN layer 1~mm on the k-Al2O3 layer.

Description

10 15 20 30 35 511 089 4 021. Al203~skiktet har en tjocklek av 0.5-2 pm. Ytterligare ett skikt (0 1-1 pm tjockt) av TiN utfâlls. Detta yttersta skikt av TiN, har en ytfinhet RmaX<0.4 pm över en längd av 10 pm. Den jämna belåggningsytan kan erhållas genom en lätt vàtblästring av beläggningen med finkornigt (400-150 mesh) aluminiumoxid- pulver eller genom att borsta eggarna med borstar baserade på SiC som beskrivs i svenska patentansökan 9402543-4. TiN-skiktet avlägsnas längs skàreggen. 10 15 20 30 35 511 089 4 021. The Al 2 O 3 layer has a thickness of 0.5-2 μm. Another one layer (0 1-1 μm thick) of TiN precipitates. This outermost layer of TiN, has a surface finish RmaX <0.4 μm over a length of 10 μm. The even coating surface can be obtained by a light wet blasting of the coating with fine-grained (400-150 mesh) alumina powder or by brushing the edges with brushes based on SiC as described in Swedish patent application 9402543-4. TiN layer removed along the cutting edge.

Exempel_l A. Ett hårdmetallskär av typ CNMG120408-MM med sammansätt- 1.16 vikt-% Ta, 0.28 vikt-% Nb och ba- lans WC, med en bindefas högt legerad med W motsvarande ett CW- ningen 10.5 vikt-% Co, förhållande av 0.87, belades med ett innersta 0.5 pm likaxligt TiCN-skikt med ett högt kväveinnehåll, motsvarande ett uppskat- tat C/N-förhållande av 0.05, följt av ett 4.3 pm tjockt skikt av kolumnår TiCN utfälld med användning av MT-CVD-teknik. I följande steg under samma beläggningsprocess utfälldes ett 1.1 pm skikt av Al2O3 bestående av ren K-fas enligt processen be- skriven i EP-A-523 021. Ett tunt, 0.5 pm, TiN-skikt utfàlldes, under samma cykel, ovanpå Al2O3-skiktet. Det belagda skäret borstades med en SiC-innehållande nylonborste efter beläggning, varvid det yttre TiN skiktet avlägsnades pà eggen.Example_1 A. A cemented carbide insert of type CNMG120408-MM with assembly 1.16 wt% Ta, 0.28 wt% Nb and ba- lance WC, with a binder phase highly alloyed with W corresponding to a CW 10.5% by weight of Co, ratio of 0.87, was coated with an innermost 0.5 μm of axial axis TiCN layer with a high nitrogen content, corresponding to an estimated tat C / N ratio of 0.05, followed by a 4.3 μm thick layer of column year TiCN precipitated using MT-CVD technology. IN the following steps during the same coating process precipitated a 1.1 pm layer of Al2O3 consisting of pure K-phase according to the process written in EP-A-523 021. A thin, 0.5 μm, TiN layer was precipitated, during the same cycle, on top of the Al2O3 layer. The coated insert brushed with a SiC-containing nylon brush after coating, whereby the outer TiN layer was removed on the edge.

B. Ett härdmetallskär av typ CNMG120408-MM med sammansätt- 1.8 vikt-% TiC, 3.0 Vikt-% TaC, 0.4 Vikt- % NbC, balans WC och ett CW-förhållande av 0.88. Härdmetallen hade en ytzon, omkring 25 pm tjock, utarmad på kubiska karbi- ningen 7_5 vikt-% Co, der. Skäret belades med ett innersta 0.5 pm likaxligt TiCN- skikt med ett högt kväveinnehåll, motsvarande ett uppskattat C/N förhållande av 0.05, följt av ett 7.2 pm tjockt skikt av kolumnär TiCN utfàllt med användning av MT-CVD-teknik. I föl- jande steg under samma beläggningsprocess utfälldes ett 1.2 pm skikt av Al2O3 bestående av ren K-fas enligt procedur beskriven i EP-A-523 021. Ett tunt, TiN-skikt utfälldes under samma cykel ovanpå Al2O3-skiktet. Det belagda skâret bcrstades 0.5 pm, med en SiC~innehàllande nylonborste efter beläggning, varvid det yttre TiN-kiktet avlägsnades på eggen. lC 15 20 25 30 511 089 sättningen av 10-11 vikt-% Co, är den föredragna kornstorleken 1.5-2 pm, helst omkring 1.7 pm. CW-förhållandet skall vara 0.80-0.91. av eta-fas (M5C), utan någon skadlig effekt. Av CW-värdet Hàrdmetallen kan innehålla små mängder, <1 volym %, följer att ingen fri grafit är tillåten i härdmetallsubstratet enligt föreliggande utföringsform.B. A CNMG120408-MM core metal insert having a composition 1.8% by weight of TiC, 3.0% by weight of TaC, 0.4% by weight of % NbC, balance WC and a CW ratio of 0.88. The hard metal had a surface zone, about 25 μm thick, depleted of cubic carbide 7_5% by weight of Co, there. The insert was coated with an innermost 0.5 μm of axial TiCN layer with a high nitrogen content, corresponding to an estimated C / N ratio of 0.05, followed by a 7.2 μm thick layer of column TiCN precipitated using MT-CVD technology. In the following step during the same coating process, a 1.2 μm precipitated layer of Al2O3 consisting of pure K-phase according to the procedure described in EP-A-523 021. A thin, TiN layer was precipitated below the same cycle on top of the Al2O3 layer. The coated notch was brushed 0.5 pm, with a SiC ~ containing nylon brush after coating, wherein the outer TiN layer was removed on the edge. lC 15 20 25 30 511 089 the concentration of 10-11% by weight of Co, is the preferred grain size 1.5-2 pm, preferably around 1.7 pm. The CW ratio should be 0.80-0.91. of eta phase (M5C), without any harmful effect. Of the CW value The cemented carbide may contain small amounts, <1% by volume, It follows that no free graphite is permitted in the cemented carbide substrate according to the present embodiment.

Belâggningen omfattar - ett första (innersta) skikt av TiCxNyOz med x+y+z=1, och z<0.5, med likaxliga korn med storlek <0.5 pm och en total tjocklek - ett skikt av TiCxNy med x+y=l, x>0.3 och y>O.3, med en tjocklek av 2-5 pm, med kolumnära korn och med en medeldiameter av O.l~2 pm. Tjockleken av TiCxNyOz skiktet beror pà typen av applikation, 2-5 pm i ytterst egglinje-seghetskrävande arbetsstyckematerial såsom Ti-stabiliserat rostfritt stäl. - ett skikt av en slät, finkornig (kornstorlek omkring 0.5- 2 pm) Al2O3 bestående väsentligen av K-fas. Skiktet kan inne- hälla smä mängder, 1-3 vol-%, av 6- eller u-faserna bestämda med XRD-mätning. Al2O3-skiktet har en tjocklek av 0.5-2 pm.The coating includes a first (innermost) layer of TiCxNyOz with x + y + z = 1, and z <0.5, with equal-axis grains with size <0.5 pm and a total thickness a layer of TiCxNy with x + y = 1, x> 0.3 and y> O.3, with a thickness of 2-5 pm, with columnar grains and with an average diameter of O.l ~ 2 pm. The thickness of the TiCxNyOz layer depends on the type of application, 2-5 pm in extremely edge-line toughness-demanding workpiece material such as Ti-stabilized stainless steel. - a layer of a smooth, fine-grained (grain size about 0.5- 2 pm) Al2O3 consisting essentially of K-phase. The layer may contain pour small amounts, 1-3% by volume, of the 6- or u-phases determined with XRD measurement. The Al2O3 layer has a thickness of 0.5-2 μm.

Detta Al2O3~skikt följs av ett ytterligare skikt (0.l-1 pm tjockt) av TiN med en ytfinhet Rmax pm. TiN-skikt är avlägsnat längs skäreggen.This Al2O3 layer is followed by an additional layer (0.1-1 μm) thick) of TiN with a surface finish Rmax pm. TiN layer is removed along the cutting edge.

Enligt metoden enligt uppfinningen tillverkas ett WC-Co-ba- serat hàrdmetallsubstrat med en högt W-legerad bindefas med ett CW~förhàllande enligt ovan och ett innehåll av kubiska karbider enligt ovan och en WC kornstorlek enligt ovan, ett första (innersta) skikt av TiCxNyOz med x+y+z=l, och z<0.5, med en tjocklek av <1.5 pm, och med likaxliga korn med storlek <0.5 pm med användning av kända CVD-metoder. - ett skikt av TiCXNy x+y=l, x>0.3 och y>0.3, med en tjocklek av 2-5 pm, med kolumnära korn och med en medeldiameter av 0.1-2 pm, med användning av företrädesvis MTCVD-teknik (med användning av acetonitril som kol- och kvävekälla för att bilda skiktet i temperaturintervallet 700-900 OC). De exakta villkoren beror emellertid i viss utsträckning pä konstruktio- nen av utrustningen som används. - ett slätt, finkornigt Al2O3-skikt väsentligen bestående av k-Al2O3 utfàlls under betingelser beskrivna i t ex. EP-A-523 10 15 20 25 511 D89 Förslitningsmekanism i den här provet är urflisning av eg- gen. Skären med gradientsubstraten (B, E och F) säg bra ut ef- ter tre ingrepp men havererade plötsligt efter omkring fyra.According to the method of the invention, a WC-Co-base is manufactured. cemented carbide substrate with a high W-alloy binder phase with a CW ~ ratio as above and a content of cubic carbides as above and a WC grain size as above, a first (innermost) layer of TiCxNyOz with x + y + z = 1, and z <0.5, with a thickness of <1.5 pm, and with equilateral grains with size <0.5 pm using known CVD methods. a layer of TiCXNy x + y = 1, x> 0.3 and y> 0.3, with a thickness of 2-5 pm, with columnar grains and with an average diameter of 0.1-2 μm, using preferably MTCVD technology (with use of acetonitrile as a source of carbon and nitrogen to form layer in the temperature range 700-900 OC). The exact however, the conditions depend to some extent on the of the equipment used. - a smooth, fine-grained Al2O3 layer substantially permanent of k-Al 2 O 3 precipitated under conditions described in e.g. EP-A-523 10 15 20 25 511 D89 Wear mechanism in this test is chipping of the Gene. The inserts with the gradient substrates (B, E and F) look good ef- three interventions but suddenly failed after about four.

Skär (enligt uppfinningen) 15 Antal ingrepp (jämförelse) (yttre sort) (yttre sort) (yttre sort) *n m tj 0 ul P »bßVJVJUI (yttre sort) Exempel_2 Skär A och B enligt ovan valdes för ett svarvprov, längsgå- ende och planing i bearbetbarhetsförbättrat AISI304L rostfritt stål.Notch (according to the invention) 15 Number of procedures (comparison) (outer variety) (outer variety) (outer variety) * n m tj 0 ul P »BßVJVJUI (outer variety) Example_2 Cuts A and B as above were selected for a turning test, longitudinal and planing in machinability-enhanced AISI304L stainless steel.

Skärhastighet var 250 m/min, matning 0.3 mm/varv och skär- djup 2 mm. Skärtid l minut/cykel.Cutting speed was 250 m / min, feed 0.3 mm / revolution and cutting speed depth 2 mm. Cutting time 1 minute / cycle.

Förslitningensmekanismen var plastisk deformation.The wear mechanism was plastic deformation.

Skär Antal cykler B (jämförelse) 7 A (enligt uppfinningen) 4 Exempel_3 G. Skär i geometri TNMGl60408-MM med sammansättning och be- läggning enligt A ovan.Cut Number of cycles B (comparison) 7 A (according to the invention) 4 Example_3 G. Inserts in geometry TNMGl60408-MM with composition and laying according to A above.

H. Skär i geometri TNMGl60408-MM med sammansättning och be- läggning enligt B ovan.H. Inserts in geometry TNMGl60408-MM with composition and laying according to B above.

I. Skär i geometri TNMG16Ö408 med sammansättning och be- läggning enligt C ovan.I. Cuts in geometry TNMG16Ö408 with composition and laying according to C above.

Skären G, H och I provades i längsgående, torr, svarvning av en axel i duplex rostfritt stål.The inserts G, H and I were tested in longitudinal, dry, turning of a duplex stainless steel shaft.

Matning 0.3 mm/varv, hastighet 140 m/min och skärdjup 2 mm.Feed rate 0.3 mm / rev, speed 140 m / min and cutting depth 2 mm.

Total skärtid per komponent var 12 minuter.Total cutting time per component was 12 minutes.

Skär-G och I fick plastisk deformation medan skär H fick någon stràlförslitning.Cuts-G and I got plastic deformation while cut H got any radiation wear.

LT) lO 15 20 BO 35 511 089 C. Ett konkurrerande hàrdmetallskär av typ CNMGl20408 från en ledande härdmetallproducent valdes för jämförelse i ett svarvprov. Hàrdmetallen hade sammansättningen 9.0 vikt-% Co, 0.2 vikt-% TiC, 1.7 vikt-% TaC, 0.2 vikt-% NbC, balans WC och ett CW-förhållande av 0.90. Skäret hade en beläggning bestående av 1.0 pm TiC, 0.8 pm TiN, 1.0 pm TiC och, ytterst, 0.8 pm TiN.LT) lO 15 20 STAY 35 511 089 C. A competing cemented carbide insert of type CNMG120408 from a leading core metal producer was selected for comparison in one turning test. The cemented carbide had a composition of 9.0% by weight of Co, 0.2 wt% TiC, 1.7 wt% TaC, 0.2 wt% NbC, balance WC and a CW ratio of 0.90. The insert had a coating lasting of 1.0 μm TiC, 0.8 μm TiN, 1.0 μm TiC and, ultimately, 0.8 μm TiN.

Undersökning i ljusoptiskt mikroskop visade ingen eggbehandling efter beläggning.Examination under a light optical microscope showed no edge treatment after coating.

D. Ett konkurrerande hârdmetallskär av typ CNMG120408 från en yttre ledande hàrdmetallproducent valdes för jämförelse i ett svarvprov. Hàrdmetallen hade en sammansättningen av 5.9 3.1 vikt-% TiC, 5.6 Vikt-% TaC, 0.1 vikt-% NbC , lans WC och ett CW-förhållande av 0.95. Hàrdmetallen hade en ytzon, omkring 30 pm tjock, som var anrikad pà Co. Skäret hade vikt-% Co, ba- en beläggning bestående av 5.3 pm TiC, 3.6 pm TiCN, ytterst, 2.0 pm TiN. Undersökning i ljusoptiskt mikroskop visade ingen eggbehandling efter beläggning.D. A competing cemented carbide insert of type CNMG120408 from an external leading cemented carbide producer was chosen for comparison in a turning test. The cemented carbide had a composition of 5.9 3.1 wt% TiC, 5.6 wt% TaC, 0.1 wt% NbC, lance WC and a CW ratio of 0.95. The carbide had one surface zone, about 30 pm thick, which was enriched at Co. The insert had weight% Co, ba- a coating consisting of 5.3 μm TiC, 3.6 μm TiCN, ultimately, 2.0 pm TiN. Examination under a light optical microscope showed no edge treatment after coating.

E. Ett konkurrerande hàrdmetallskär av typ CNMGl20408 fràn en yttre ledande hàrdmetallproducent valdes för jämförelse i ett svarvprov. Hàrdmetallen hade en sammansättningen av 8.9 vikt-% Co, balans WC och ett CW-förhållande av 0.84. Skäret ha- de en belàggning bestående av 1.9 pm TiC, 1.2 pm TiN, 1.5 pm Al2O3 laminerad med 3 0.1 pm tjockt skikt av TiN och, ytterst, 0.8 pm TiN. Undersökning i ljusoptiskt mikroskop visade ingen eggbehandling efter beläggning.E. A competing cemented carbide insert of type CNMGl20408 from an external leading cemented carbide producer was chosen for comparison in a turning test. The cemented carbide had a composition of 8.9 weight% Co, balance WC and a CW ratio of 0.84. The insert has they a coating consisting of 1.9 μm TiC, 1.2 μm TiN, 1.5 μm Al2O3 laminated with 3 0.1 μm thick layer of TiN and, ultimately, 0.8 pm TiN. Examination under a light optical microscope showed no edge treatment after coating.

F. Ett konkurrenskraftigt hàrdmetallskär av typ CNMGl20408 frän en yttre ledande härdmetallproducent valdes för jämförelse i ett svarvprov. Härdmetallen hade en sammansättning av 5.4 2.7 vikt-% TiC, 3.5 vikt-% TaC, 2.3 vikt-% NbC , lans WC och ett CW-förhållande av 0.94. Hàrdmetallen hade en ytzon, omkring 40 pm tjock, som var anrikad pä Co. Skäret hade vikt-% CO, ba- en beläggning bestående av 5.3 pm TiC, 3.6 pm TiCN, ytterst, 2.0 pm TiN. Undersökning i ljusoptiskt mikroskop visade ingen eggbehandling efter beläggning.F. A competitive cemented carbide insert of type CNMG120408 from an external leading core metal producer was selected for comparison in a turning test. The core metal had a composition of 5.4 2.7 wt% TiC, 3.5 wt% TaC, 2.3 wt% NbC, lance WC and a CW ratio of 0.94. The carbide had one surface zone, about 40 pm thick, which was enriched in Co. The insert had wt% CO, ba- a coating consisting of 5.3 μm TiC, 3.6 μm TiCN, ultimately, 2.0 pm TiN. Examination under a light optical microscope showed no edge treatment after coating.

Skär från A, B, C, D, E och F jämfördes i planing av en stäng, diameter 180, med två, motsatta, plana sidor (tjocklek 120 mm) i 4LR60 material. Matning 0.25 mm/varv, hastighet 180 m/min och skàrdjup 2.0 mm. 10 15 20 8 -5 Skar1J1ocQ§9valdes för ett svarvprov. Längsgàende och pla- ning av gjuten ventilkomponent i AISI316L rostfritt stål. Skär- hastighet var 110 m/min, matning 0.25/0.3 mm/varv och skârdjup 1.25 mm. Skärtiden var 2.8 minuter/komponent. Åtta eggar prova- des per skärtyp.Inserts from A, B, C, D, E and F were compared in planing one close, diameter 180, with two, opposite, flat sides (thickness 120 mm) in 4LR60 material. Feed rate 0.25 mm / rev, speed 180 m / min and cutting depth 2.0 mm. 10 15 20 8 -5 Skar1J1ocQ§9 was selected for a turning test. Longitudinal and pl- casting valve component in AISI316L stainless steel. Notch- speed was 110 m / min, feed 0.25 / 0.3 mm / rev and cutting depth 1.25 mm. The cutting time was 2.8 minutes / component. Eight eggs test des per cutting type.

Förslitningen var urflisning av kanten för skär J och ojämn fasförslitning för skär K.The wear was chipping of the edge for insert J and uneven phase wear for inserts K.

Skär Genomsnittligt antal komponenter '6.s 4.4 J (enligt uppfinningen) K (yttre sort) Exempeli Skär enligt A, B, C och D valdes för ett svarvprov. Inre svarvning av AISI304 ventilsubstrat i rostfritt stål. Skärhas- tighet var 130 m/min och matning 0.4 mm/varv. Stabiliteten var dålig beroende pà borrstàngen.Cut Average number of components '6.s 4.4 J (according to the invention) K (outer variety) Examples Cuts according to A, B, C and D were selected for a turning test. Internal turning of AISI304 valve substrate in stainless steel. Skärhas- speed was 130 m / min and feed 0.4 mm / rev. The stability was poor dependence on the drill rod.

Förslitningen var urflisning av kanten för skär D och B me- dan skär A och C fick plastisk deformation.The wear was chipping of the edge for inserts D and B with dan cuts A and C got plastic deformation.

Skär _ Antal komponenter A (enligt uppfinningen) (yttre sort) NU1\1\O D C (yttre sort) B (jämförelse) EXfimnel_1 Skär A och C enligt ovan valdes för ett svarvprov, grovbe- arbetning av en fyrkantstàng i AISI316Ti rostfritt stàl. Bear- betningen avbröts beroende på komponentform.Cut _ Number of components A (according to the invention) (outer variety) NU1 \ 1 \ O D C (outer variety) B (comparison) EX fi mnel_1 Cuts A and C as above were selected for a turning test, coarse working of a square bar in AISI316Ti stainless steel. Bear- pickling was interrupted depending on component shape.

Skärhastighet var 142 m/min) matning 0.2 mm/varv, skärdjup 4 mm och skärtid 0.13 minuter/komponent.Cutting speed was 142 m / min) feed 0.2 mm / revolution, cutting depth 4 mm and cutting time 0.13 minutes / component.

Förslitningen var urflisning av kanten.The wear was chipping of the edge.

Skär Antal komponenter A (enligt uppfinningen) 25 C (yttre sort) 15 lO 15 20 25 30 11 089 Tvà eggar av skär G slets ut på att producera en komponent medan en egg av skär H avslutade en komponent och fyra eggar behövdes för att avsluta en komponent med användning av skär I.Cut Number of components A (according to the invention) 25 C (outer variety) 15 lO 15 20 25 30 11 089 Two edges of insert G were worn out to produce a component while an edge of insert H terminated one component and four edges was needed to finish a component using insert I.

Skär Antal eggar/komponent H (jämförande) 1 G (enligt uppfinningen) 2 I (yttre sort) 4 Exempel_A Skär A och E enligt ovan valdes för ett svarvprov, huvud- sakligen planing, i ett rotorhus tillverkat i gjutet AISI316 rostfritt stål. Bearbetningen avbröts beroende pä komponentde- sign.Cut Number of edges / component H (comparative) 1 G (according to the invention) 2 I (outer variety) 4 Example_A Inserts A and E as above were selected for a turning test, main actually planing, in a rotor housing made of cast AISI316 stainless steel. Processing was interrupted due to component sign.

Skärhastighet var 180 m/min, matning 0.2 mm/varv och skär- djup O-2 mm (oregelbunden form av gjutning). Skärtid 10.5 minu- ter/komponent.Cutting speed was 180 m / min, feed 0.2 mm / revolution and cutting depth O-2 mm (irregular shape of casting). Cutting time 10.5 min- ter / component.

Förslitningsmekanism var en kombination av eggurflisning och plastisk deformation.Wear mechanism was a combination of egg chipping and plastic deformation.

Skär Antal komponenter A (enligt uppfinningen) 2 E (yttre sort) 1 Exempel_5 J. Skär i geometri CNMG160612-MR med sammansättning och be- läggning enligt B ovan.Cut Number of components A (according to the invention) 2 E (outer variety) 1 Example_5 J. Inserts in geometry CNMG160612-MR with composition and laying according to B above.

K. Ett konkurrerande hàrdmetallskär av typ CNMGl606l2 fràn en yttre ledande hàrdmetallproducent valdes för jämförelse i ett svarvprov. Hàrdmetallen hade en sammansättning av 6.3 vikt- % Co, 2.7 vikt-% TiC, 3.4 vikt-% TaC, 2.1 vikt-% NbC , balans WC och ett CW-förhållande av 0.89. Hárdmetallen hade en ytzon, omkring 20 pm tjock, utarmad på kubiska karbider. Skäret hade en beläggning bestående av 0.1 pm TiN, 6.0 um kolumnär TiCN, 1.5 pm multiskikt, 1.4 um Al2O3 och ytterst, 0.6 pm TiN. Under- sökning i ljusoptiskt mikroskop visade ingen eggbehandling efter beläggning.K. A competing cemented carbide insert of type CNMGl606l2 from an external leading cemented carbide producer was chosen for comparison in a turning test. The cemented carbide had a composition of 6.3 % Co, 2.7 wt% TiC, 3.4 wt% TaC, 2.1 wt% NbC, balance WC and a CW ratio of 0.89. The cemented carbide had a surface zone, about 20 pm thick, depleted of cubic carbides. The insert had a coating consisting of 0.1 μm TiN, 6.0 μm column near TiCN, 1.5 μm multilayer, 1.4 μm Al 2 O 3 and outer, 0.6 μm TiN. During- search in a light optical microscope showed no edge treatment after coating.

Claims (1)

10 15 511 08910 15 511 089 1. Ett skär speciellt för att svarva rostfritt stàl omfattande en hàrdmetallkropp och en beläggning Krax k à n n e t e c k n a t av att hàrdmetallkroppen består av WC, 10-ll vikt-% Co och 0.5-1.7 vikt-% kubiska karbider av Ta och Nb och en högt W-legerad bindefas med en CW-kvot av 0.80-0.91 och av att beläggningen består av - ett första (innersta) skikt av TiCxNyOz med x+y+z=l och z<0.5 och en tjocklek av storleken - ett skikt av TiCxNY med x+y=1 och x>0.3 och y>0.3 en tjocklek av 2-5 pm med kolumnära korn med en medeldiameter av o.1-2 pm - ett skikt av slät, finkornig (0.5-2 pm) K-Al2O3 med en tjocklek av 0.5-2 pm - ett yttersta skikt av 0.1-1 pm TiN med en ytfinhet Rmax skäreggen.A cutting insert specially for turning stainless steel comprising a cemented carbide body and a coating Krax is characterized in that the cemented carbide body consists of WC, 10 -11% by weight of Co and 0.5-1.7% by weight of cubic carbides of Ta and Nb and a high W-alloy binder phase with a CW ratio of 0.80-0.91 and that the coating consists of - a first (innermost) layer of TiCxNyOz with x + y + z = 1 and z <0.5 and a thickness of the size - a layer of TiCxNY with x + y = 1 and x> 0.3 and y> 0.3 a thickness of 2-5 pm with columnar grains with an average diameter of o.1-2 pm - a layer of smooth, fine-grained (0.5-2 pm) K-Al2O3 with a thickness of 0.5-2 pm - an outermost layer of 0.1-1 pm TiN with a surface finish Rmax cutting edge.
SE9602413A 1995-11-30 1996-06-17 Cutting tool insert for turning steel SE511089C2 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
SE9602413A SE511089C2 (en) 1996-06-17 1996-06-17 Cutting tool insert for turning steel
DE69619275T DE69619275T2 (en) 1995-11-30 1996-11-29 COATED ROTATABLE INSERT AND METHOD FOR THE PRODUCTION THEREOF
CN96198661A CN1203637A (en) 1995-11-30 1996-11-29 Coated cutting insert and method of making it
EP96941282A EP0874919B1 (en) 1995-11-30 1996-11-29 Coated turning insert and method of making it
IL12447596A IL124475A (en) 1995-11-30 1996-11-29 Coated turning insert and method of making it
KR10-1998-0704051A KR100432108B1 (en) 1995-11-30 1996-11-29 Coated turning insert and method of making it
AT96941282T ATE213283T1 (en) 1995-11-30 1996-11-29 COATED ROTATABLE INSERT AND METHOD FOR PRODUCING SAME
US09/077,424 US6200671B1 (en) 1995-11-30 1996-11-29 Coated turning insert and method of making it
JP09520425A JP2000515588A (en) 1995-11-30 1996-11-29 Coated turning insert and method of manufacturing the same
US11/483,380 USRE39999E1 (en) 1995-11-30 1996-11-29 Coated turning insert and method of making it
PCT/SE1996/001578 WO1997020082A1 (en) 1995-11-30 1996-11-29 Coated turning insert and method of making it
BR9611781A BR9611781A (en) 1995-11-30 1996-11-29 Coated insert for turning and manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9602413A SE511089C2 (en) 1996-06-17 1996-06-17 Cutting tool insert for turning steel

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SE9602413D0 SE9602413D0 (en) 1996-06-17
SE9602413L SE9602413L (en) 1997-12-18
SE511089C2 true SE511089C2 (en) 1999-08-02

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001018272A1 (en) * 1999-09-06 2001-03-15 Sandvik Ab (Publ) Coated cemented carbide insert
EP1563933A1 (en) * 2004-02-17 2005-08-17 Sandvik Intellectual Property HB Cutting tool for bimetal machining

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001018272A1 (en) * 1999-09-06 2001-03-15 Sandvik Ab (Publ) Coated cemented carbide insert
USRE39814E1 (en) 1999-09-06 2007-09-04 Sandvik Intellectual Property Ab Cemented carbide insert and method of making same
EP1563933A1 (en) * 2004-02-17 2005-08-17 Sandvik Intellectual Property HB Cutting tool for bimetal machining
US7422805B2 (en) 2004-02-17 2008-09-09 Sandvik Intellectual Property Aktiebolag Cutting tool for bimetal machining

Also Published As

Publication number Publication date
SE9602413D0 (en) 1996-06-17
SE9602413L (en) 1997-12-18

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