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WO2009070111A1 - Coated cemented carbide inserts for rough milling of gears - Google Patents

Coated cemented carbide inserts for rough milling of gears Download PDF

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Publication number
WO2009070111A1
WO2009070111A1 PCT/SE2008/051359 SE2008051359W WO2009070111A1 WO 2009070111 A1 WO2009070111 A1 WO 2009070111A1 SE 2008051359 W SE2008051359 W SE 2008051359W WO 2009070111 A1 WO2009070111 A1 WO 2009070111A1
Authority
WO
WIPO (PCT)
Prior art keywords
coating
cutting insert
cemented carbide
ali
thickness
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.)
Ceased
Application number
PCT/SE2008/051359
Other languages
French (fr)
Inventor
Björn OLSSON
Jan-Erik Rohlin
Ingemar Hessman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sandvik Intellectual Property AB
Original Assignee
Sandvik Intellectual Property 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 Intellectual Property AB filed Critical Sandvik Intellectual Property AB
Publication of WO2009070111A1 publication Critical patent/WO2009070111A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/0641—Nitrides

Definitions

  • the present invention relates to coated cemented carbide cutting tool inserts, particularly useful for rough milling of gears in case-hardened steel in soft condition.
  • High Speed Steel (HSS) tools When milling gears in larger sizes High Speed Steel (HSS) tools are still used to a great extent. Cemented carbide tools have started to be used. Now when the volume of larger gears are increasing due to the expansion in the mine and windmill industry the need of increased productivity (cutting speed/tool life) is even more important.
  • HSS High Speed Steel
  • coated cutting tool inserts consisting of a cemented carbide body with a composition of 7.3-7.9 wt% Co, preferably 7.6 wt% Co, 1.0-1.8 wt% cubic carbides, preferably 1.4-1.7 wt% cubic carbides of the metals Ta and Nb and balance WC.
  • the average grain size of the WC, calculated from the coercivity (He-value) is in the range of about 1.5-2.5 ⁇ m, preferably about 1.8 ⁇ m.
  • the cobalt binder phase is rather highly alloyed with W.
  • the content of W in the binder phase can be expressed as the
  • CW-ratio magnetic-% Co / wt-% Co
  • magnetic-% Co is the weight percentage of magnetic Co of the cemented carbide body
  • wt% Co is the weight percentage of Co in the cemented carbide.
  • the CW-value is a function of the W content in the Co binder phase. A high CW-value corresponds to a low W-content in the binder phase. Improved cutting performance is achieved if the cemented carbide body has a CW-ratio of 0.86-0.94.
  • the cemented carbide may contain small amounts, ⁇ 3 vol%, of ⁇ -phase (MgC), without any detrimental effect.
  • the radius of the uncoated cutting edge is 25-100 ⁇ m, prefera- bly 25-50 ⁇ m.
  • the insert according to the present invention is provided with an aperiodic (Ti, Al)N multilayer coating consisting of a binary A/B/A/B/A/B structure with thin alternating sublayers A and B being repeated throughout the entire coating.
  • aperiodic (Ti, Al)N multilayer coating consisting of a binary A/B/A/B/A/B structure with thin alternating sublayers A and B being repeated throughout the entire coating.
  • One sequence of a sublayer A/B is here denoted a lamella. Due to the aperiodic na-
  • the thickness of each lamella varies but in average the lamella thickness is within 30-300 nm, preferably 60- 120 nm.
  • the sublayer A comprises Al x Tii_ x N, where x is 0.40-0.7, preferably 0.5-0.67.
  • Layer B comprises Ti y Ali_ y N, where y is 0.6-1, preferably 0.75-1.
  • the stoichiometry for the whole coating as measured by e.g. WDS or EDS is within the interval Ti z Ali_ z N, z: 0.40-0.7, preferably 0.45-0.6.
  • the total thickness of the multi- layered coating is 0.5 ⁇ m to 15 ⁇ m, preferably 1 ⁇ m to 10 ⁇ m, more preferably 1 to 5 ⁇ m on the rake side and 2 to 8 ⁇ m on the flank side.
  • there is an outer Ti b Ali_ b N layer, b 0.8-0.9, preferably 0.82-0.85, of sufficient thickness to give a visible, homogenous bronze-colored look, preferably 0.1-1 ⁇ m thick.
  • the present invention also relates to a method of making a coated cutting tool insert by powder metallurgical technique, wet milling of powders forming hard constituents and binder phase, compacting the milled mixture to bodies of desired shape and size and sintering, of a cemented carbide body with a composition of 7.3-7.9 wt% Co, preferably 7.6 wt% Co, 1.0-1.8 wt%, preferably 1.4-1.7 wt% cubic carbides of the metals Ta and Nb and balance WC.
  • the average grain size of the WC, calculated from the coercivity (He-value), is 1.5-2.5 ⁇ m, preferably about 1.8 ⁇ m.
  • the milling and sintering conditions are chosen to obtain a CW-ratio of 0.86-0.94.
  • the inserts are suitably dry blasted to 25-100 ⁇ m, preferably 35-60 ⁇ m edge rounding before coating.
  • a coating comprising a lami ⁇ nar, multilayered structure of A/B/A/B...
  • the total thickness of the multilayered coating is 0.5 ⁇ m to 15 ⁇ m, preferably 1 ⁇ m to 10 ⁇ m, more preferably 1-5 ⁇ m on the rake side and 2-8 ⁇ m of the flank side.
  • the coating is deposited using cathodic arc evapo ⁇ ration using two or three pairs of arc sources consisting of pure Ti and/or TiAl alloy (s), in an N 2 or mixed N 2 +Ar gas atmosphere.
  • the invention also relates to the use of cutting tool inserts according to above for rough milling of gears with length between the tops of the gearteeth of 19-95 mm, preferably 30-75, mm and a height of 6-75 mm, preferably 20-60 mm at a cutting speed of 50- 150 m/min, a feed of 1 to 5 mm per rev and a depth of cut of 1 to 5 mm in soft case-hardened steel.
  • Aperiodic multilayers were deposited by cathodic arc evapora- tion on cemented carbide milling inserts with an edge radius of 35 urn and a composition of 7.6 wt-% Co, 1.25 wt-% TaC, 0.30 wt-% NbC and balance WC with average grain size of 1.8 ⁇ m, with a binder phase alloyed with W corresponding to a CW-ratio of 0.87.
  • the mul ⁇ tilayers were deposited from one pair of Ti 84 Ali 6 -targets and two pairs of Ti3 3 Al 67 -targets with the inserts mounted on a 3-fold rotating substrate table arranged in order to obtain the aperiodic structure.
  • the arc evaporation was performed in a N 2 -atmosphere .
  • the total coating thickness was in the range 2-9 ⁇ m, varying from batch to batch, from insert to insert, and over the insert sur- face.
  • the coating consisted of a binary A/B/A/B/A/B aperiodic multilayer, i.e. layers with a non-repetitive thickness, but with an average A+B layer thickness of 60-120 nm.
  • the inserts were further coated with an outer layer of Ti 0 8 4 Al 0 i ⁇ N to produce a bronze colour .
  • the gear teeth had height of 30 mm and the length between the geartops was around 38 mm.
  • Tool life of invention was 32 gear wheels as an average of five tests.
  • the gear teeth had height of 35 mm and the length between the geartops was around 50 mm.
  • Tool life of invention was 21 gear-wheels as an average of five tests

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Gear Processing (AREA)

Abstract

The present invention discloses coated inserts comprising a cemented carbide substrate and an aperiodic multilayer coating with: -a substrate of cemented carbide having a composition of 7.3- 7.9 wt% Co, 1.0-1.8 wt% cubic carbides of the metals Ta and Nb and balance WC. The average grain size of the WC is 1.5-2.5 μm -and a coating which is essentially an aperiodic multilayer consisting of layers A/B/A/B/A... where the sublayers A and B con- sist of AlxTii-xN and TiyAli-yN respectively. The typical average thickness of each A/B sequence is in the range 30-300 nm and the total thickness of the coating in the range 0.5-20 μm. The total chemical composition averaged over the whole coating consists of TizAli-zN where z is 0.40-0.70.

Description

Coated cemented carbide inserts for rough milling of gears
The present invention relates to coated cemented carbide cutting tool inserts, particularly useful for rough milling of gears in case-hardened steel in soft condition.
When milling gears in larger sizes High Speed Steel (HSS) tools are still used to a great extent. Cemented carbide tools have started to be used. Now when the volume of larger gears are increasing due to the expansion in the mine and windmill industry the need of increased productivity (cutting speed/tool life) is even more important.
It is an object of the present invention to provide PVD-coated cemented carbide cutting tool inserts, particularly useful for milling of gears with increased productivity. According to the present invention coated cutting tool inserts are provided consisting of a cemented carbide body with a composition of 7.3-7.9 wt% Co, preferably 7.6 wt% Co, 1.0-1.8 wt% cubic carbides, preferably 1.4-1.7 wt% cubic carbides of the metals Ta and Nb and balance WC. The average grain size of the WC, calculated from the coercivity (He-value) , is in the range of about 1.5-2.5 μm, preferably about 1.8 μm.
The cobalt binder phase is rather highly alloyed with W. The content of W in the binder phase can be expressed as the
CW-ratio= magnetic-% Co / wt-% Co where magnetic-% Co is the weight percentage of magnetic Co of the cemented carbide body and wt% Co is the weight percentage of Co in the cemented carbide. The CW-value is a function of the W content in the Co binder phase. A high CW-value corresponds to a low W-content in the binder phase. Improved cutting performance is achieved if the cemented carbide body has a CW-ratio of 0.86-0.94. The cemented carbide may contain small amounts, <3 vol%, of η-phase (MgC), without any detrimental effect.
The radius of the uncoated cutting edge is 25-100 μm, prefera- bly 25-50 μm.
The insert according to the present invention is provided with an aperiodic (Ti, Al)N multilayer coating consisting of a binary A/B/A/B/A/B structure with thin alternating sublayers A and B being repeated throughout the entire coating. One sequence of a sublayer A/B is here denoted a lamella. Due to the aperiodic na-
12507 WO ture of the coating, the thickness of each lamella varies but in average the lamella thickness is within 30-300 nm, preferably 60- 120 nm. The sublayer A comprises AlxTii_xN, where x is 0.40-0.7, preferably 0.5-0.67. Layer B comprises TiyAli_yN, where y is 0.6-1, preferably 0.75-1. The stoichiometry for the whole coating as measured by e.g. WDS or EDS is within the interval TizAli_zN, z: 0.40-0.7, preferably 0.45-0.6. The total thickness of the multi- layered coating is 0.5 μm to 15 μm, preferably 1 μm to 10 μm, more preferably 1 to 5 μm on the rake side and 2 to 8 μm on the flank side. In a preferred embodiment there is an outer TibAli_bN layer, b=0.8-0.9, preferably 0.82-0.85, of sufficient thickness to give a visible, homogenous bronze-colored look, preferably 0.1-1 μm thick.
The present invention also relates to a method of making a coated cutting tool insert by powder metallurgical technique, wet milling of powders forming hard constituents and binder phase, compacting the milled mixture to bodies of desired shape and size and sintering, of a cemented carbide body with a composition of 7.3-7.9 wt% Co, preferably 7.6 wt% Co, 1.0-1.8 wt%, preferably 1.4-1.7 wt% cubic carbides of the metals Ta and Nb and balance WC. The average grain size of the WC, calculated from the coercivity (He-value), is 1.5-2.5 μm, preferably about 1.8 μm. The milling and sintering conditions are chosen to obtain a CW-ratio of 0.86-0.94. The inserts are suitably dry blasted to 25-100 μm, preferably 35-60 μm edge rounding before coating.
Onto this substrate is deposited a coating comprising a lami¬ nar, multilayered structure of A/B/A/B... where layers A and B consists of, respectively, AlxTii_xN and TiyAli_yN in polycrystal- line, non-repetitive form, with x= 0.40-0.70, preferably 0.50- 0.67, and y=0.60-1.00, preferably 0.75-1.00, with an average thickness of one A/B-sublayers within the range 30-300 nm, pref¬ erably 60-120 nm, varying essentially at random. The total thickness of the multilayered coating is 0.5 μm to 15 μm, preferably 1 μm to 10 μm, more preferably 1-5 μm on the rake side and 2-8 μm of the flank side. The coating is deposited using cathodic arc evapo¬ ration using two or three pairs of arc sources consisting of pure Ti and/or TiAl alloy (s), in an N2 or mixed N2+Ar gas atmosphere. In a preferred embodiment an outer TibAli_bN layer, b=0.8-0.9, preferably 0.82-0.85, of sufficient thickness to give a visible, homoge- nous bronze-colored look preferably 0.1-1 μm thick is deposited.
12507 WO The invention also relates to the use of cutting tool inserts according to above for rough milling of gears with length between the tops of the gearteeth of 19-95 mm, preferably 30-75, mm and a height of 6-75 mm, preferably 20-60 mm at a cutting speed of 50- 150 m/min, a feed of 1 to 5 mm per rev and a depth of cut of 1 to 5 mm in soft case-hardened steel.
Example 1
Aperiodic multilayers were deposited by cathodic arc evapora- tion on cemented carbide milling inserts with an edge radius of 35 urn and a composition of 7.6 wt-% Co, 1.25 wt-% TaC, 0.30 wt-% NbC and balance WC with average grain size of 1.8 μm, with a binder phase alloyed with W corresponding to a CW-ratio of 0.87. The mul¬ tilayers were deposited from one pair of Ti84Ali6-targets and two pairs of Ti33Al67-targets with the inserts mounted on a 3-fold rotating substrate table arranged in order to obtain the aperiodic structure. The arc evaporation was performed in a N2-atmosphere . The total coating thickness was in the range 2-9 μm, varying from batch to batch, from insert to insert, and over the insert sur- face. The coating consisted of a binary A/B/A/B/A/B aperiodic multilayer, i.e. layers with a non-repetitive thickness, but with an average A+B layer thickness of 60-120 nm. The inserts were further coated with an outer layer of Ti0 84Al0 iβN to produce a bronze colour .
Example 2
Inserts according to the present invention were tested in milling of gear wheels in soft case hardened steel (DIN 1.6587 HB=190) for windmills with a diameter of 266 mm. The gear teeth had height of 30 mm and the length between the geartops was around 38 mm.
Milling tool: Special, five rows of special inserts module 12, dia=240 mm, length=185 mm Number of inserts: 96 Criterion: Surface finish and work piece tolerance.
Reference: Special insert module 12 in competitor grade X. Cutting data
Cutting speed: Vc = 100 m/min Feed: Fn= 2.5-3.5 mm per rev Depth of cut: Ap= 2.5 mm
12507 WO Oil as cutting fluid
Tool life of reference competitor grade (prior art) was 10-12 gear wheels in production.
Tool life of invention was 32 gear wheels as an average of five tests.
Increase of tool life 191 % with improved surface finish and tolerances of the gear teeth.
Example 3 Inserts according to the present invention were tested in milling of gear wheels in soft case hardened steel (DIN 1.6587 HB=190) for windmills with a diameter of 550 mm. The gear teeth had height of 35 mm and the length between the geartops was around 50 mm. Milling tool: Special, five rows of special inserts module 14, diameter=240 mm, length= 317 mm. Number of inserts : 97
Criteria: Surface finish and work piece tolerances. Reference: Special insert module 14 in competitor grade Y. Cutting data:
Cutting speed: Vc = 110-120 m/min Feed: Fn= 2.5-4.0 mm per rev Depth of cut: Ap= 2-3 mm Oil as cutting fluid Tool life of reference competitor grade was 11-13 gear-wheels in standard production.
Tool life of invention was 21 gear-wheels as an average of five tests
Increase of tool life 75 % with improved surface finish of the gear teeth.
12507 WO

Claims

Claims
1. Cutting insert comprising a cemented carbide substrate and a coating, c h a r a c t e r i s e d in
- the substrate comprises WC with an average grain size of 1.5-2.5 μm, 7.3-7.9 wt-% Co and 1.0-1.8 wt% cubic carbides of met¬ als Ta and Nb and a highly W-alloyed binder phase with a CW-ratio of 0.86-0.94 with <1 vol-% eta-phase with an uncoated cutting edge radius of 35-60 μm and in
- the coating comprising a laminar, multilayered structure of A/B/A/B.... where layers A and B consist of, respectively, AlxTii_xN and TiyAli-yN in polycrystalline, non-repetitive form, with x 0.4- 0.7, y 0.6-1, with an average thickness of one A/B-sublayers within the range 30-300 nm, varying essentially at random and with a total thickness of the multilayered coating of 0.5 μm to 15 μm on the rake side and 2-8 μm on the flank side.
2. Cutting insert according to claim 1, c h a r a c t e r i s e d in that for AlxTii_xN, x=0.5-0.67 and for TiyAli-yN, y=0.75-l.
3. Cutting insert according to any one of claims 1-2, c h a r a c t e r i s e d in that the average thickness of one A/B-sublayers is within the range 60-120 nm.
4. Cutting insert according to any one of claims 1-3, c h a r a c t e r i s e d in an outer TibAli_bN layer, b=0.8-0.9, of sufficient thickness to give a visible, homogenous bronze-coloured look.
5. Cutting insert according to claim 4, c h a r a c t e r i s e d in that the outer TibAli_bN layer is 0.1-1 μm thick.
6. Cutting insert according to any one of claims 1-5, c h a r a c t e r i s e d in a total chemical composition averaged over the whole coating of z=0.4-0.7 expressed as TizAli_zN.
7. Cutting insert according to any one of claims 1-6, c h a r a c t e r i s e d in that the total thickness of the multilayered coating is 1 μm to 10 μm on the rake side.
8. Cutting insert according to any one of claims 1-7, c h a r a c t e r i z e d in that the cemented carbide contains 1.4-1.7 wt-% carbides of Ta and Nb.
9. Method of making a cutting insert comprising a cemented carbide substrate and a coating, c h a r a c t e r i s e d in pro- viding by powder metallurgical technigue, wet milling of powders
12507 WO forming hard constituents and binder phase, compacting the milled mixture to bodies of desired shape and size and sintering, a substrate consisting of WC with an average grain size of 1.5-2.5 μm, 7.3-7.9 wt-% Co and 1.0-1.8 wt% cubic carbides of metals Ta and Nb and a highly W-alloyed binder phase with a CW-ratio of 0.86-0.94 with <1 vol-% eta-phase and in and depositing a coating comprising a laminar, multilayered structure of A/B/A/B... where layers A and B consists of, respectively, AlxTii_xN and TiyAli_yN in polycrystalline, non-repetitive form, with x=0.4-0.7, and y=0.6-l, with an average thickness of one A+B-sublayer of 30-300 nm, varying essentially at random and with a total thickness of the multilayered coating of 0.5-15 μm on the rake side and 2-8 μm on the flank side using cathodic arc evaporation using two or three pairs of arc sources consisting of pure Ti and/or TiAl alloy (s), in an N2 or a mixed N2+Ar gas atmosphere.
10. Method according to claim 9, c h a r a c t e r i s e d in that for AlxTii_xN, x=0.5-0.67 and for TiyAli_yN, y=0.75-l.
11. Method according to any one of claims 9-10, c h a r a c t e r i s e d in that the average thickness of one A/B-sublayers is within the range 60-120 nm.
12. Method according to any one of claims 9-11, c h a r a c t e r i s e d in depositing an outer TibAli-bN layer, b=0.8-0.9, of a thickness 0.1-1 μm.
13. Method according to any one of claims 9-12, c h a r a c t e r i z e d in that the cemented carbide contains 1.4-1.7 wt-% carbides of Ta and Nb.
14. Method according to any one of claims 9-13, c h a r a c t e r i z e d dry blasting the inserts to 35-60 μm edge radius before coating.
15. Use of a cutting tool insert according to any one of claims 1-8 for rough milling of gears with length between the tops of the gearteeth of 19-95 mm and a height of 6-75 mm at a cutting speed of 50-150 m/min, a feed of 1 to 5 mm per rev and a depth of cut of 1 to 5 mm in soft case-hardened steel.
12507 WO
PCT/SE2008/051359 2007-11-28 2008-11-27 Coated cemented carbide inserts for rough milling of gears Ceased WO2009070111A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0702619 2007-11-28
SE0702619-8 2007-11-28

Publications (1)

Publication Number Publication Date
WO2009070111A1 true WO2009070111A1 (en) 2009-06-04

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1038989A2 (en) * 1999-03-26 2000-09-27 Sandvik Aktiebolag Coated milling insert
WO2001016388A1 (en) * 1999-09-01 2001-03-08 Sandvik Ab (Publ) Coated grooving or parting insert
WO2001018272A1 (en) * 1999-09-06 2001-03-15 Sandvik Ab (Publ) Coated cemented carbide insert
JP2002254229A (en) * 2001-02-27 2002-09-10 Mmc Kobelco Tool Kk Drill made of surface-coated cemented carbide and excellent in wear resistance in high speed cutting
WO2006080888A1 (en) * 2005-01-31 2006-08-03 Sandvik Intellectual Property Ab Cemented carbide insert for toughness demanding short hole drilling operations
EP1795628A1 (en) * 2005-12-08 2007-06-13 Sandvik Intellectual Property AB Insert for milling of steel
US20080299366A1 (en) * 2007-06-01 2008-12-04 Sandvik Intellectual Property Ab Cemented carbide insert
US20080299383A1 (en) * 2007-06-01 2008-12-04 Sandvik Intellectual Property Ab Fine grained cemented carbide cutting tool insert

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1038989A2 (en) * 1999-03-26 2000-09-27 Sandvik Aktiebolag Coated milling insert
WO2001016388A1 (en) * 1999-09-01 2001-03-08 Sandvik Ab (Publ) Coated grooving or parting insert
WO2001018272A1 (en) * 1999-09-06 2001-03-15 Sandvik Ab (Publ) Coated cemented carbide insert
JP2002254229A (en) * 2001-02-27 2002-09-10 Mmc Kobelco Tool Kk Drill made of surface-coated cemented carbide and excellent in wear resistance in high speed cutting
WO2006080888A1 (en) * 2005-01-31 2006-08-03 Sandvik Intellectual Property Ab Cemented carbide insert for toughness demanding short hole drilling operations
EP1795628A1 (en) * 2005-12-08 2007-06-13 Sandvik Intellectual Property AB Insert for milling of steel
US20080299366A1 (en) * 2007-06-01 2008-12-04 Sandvik Intellectual Property Ab Cemented carbide insert
US20080299383A1 (en) * 2007-06-01 2008-12-04 Sandvik Intellectual Property Ab Fine grained cemented carbide cutting tool insert

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