WO2009058082A1 - Coated cutting insert for machining of aluminium based alloys - Google Patents
Coated cutting insert for machining of aluminium based alloys Download PDFInfo
- Publication number
- WO2009058082A1 WO2009058082A1 PCT/SE2008/051230 SE2008051230W WO2009058082A1 WO 2009058082 A1 WO2009058082 A1 WO 2009058082A1 SE 2008051230 W SE2008051230 W SE 2008051230W WO 2009058082 A1 WO2009058082 A1 WO 2009058082A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- zrn
- cutting tool
- cemented carbide
- tool insert
- coating
- Prior art date
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 31
- 238000003754 machining Methods 0.000 title claims abstract description 13
- 239000004411 aluminium Substances 0.000 title description 9
- 229910052782 aluminium Inorganic materials 0.000 title description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title description 9
- 229910045601 alloy Inorganic materials 0.000 title description 4
- 239000000956 alloy Substances 0.000 title description 4
- 239000000758 substrate Substances 0.000 claims abstract description 25
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 11
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 6
- 150000001875 compounds Chemical class 0.000 claims abstract description 4
- 239000010936 titanium Substances 0.000 claims description 10
- 238000003801 milling Methods 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 229910052804 chromium Inorganic materials 0.000 claims description 8
- 238000002441 X-ray diffraction Methods 0.000 claims description 7
- 238000000151 deposition Methods 0.000 claims description 7
- 230000008020 evaporation Effects 0.000 claims description 7
- 238000001704 evaporation Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 230000008021 deposition Effects 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052796 boron Inorganic materials 0.000 claims description 4
- 229910052735 hafnium Inorganic materials 0.000 claims description 4
- 229910052758 niobium Inorganic materials 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 229910052720 vanadium Inorganic materials 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000012298 atmosphere Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 29
- 239000000463 material Substances 0.000 description 6
- 229910009043 WC-Co Inorganic materials 0.000 description 4
- 238000007514 turning Methods 0.000 description 4
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000001247 metal acetylides Chemical class 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910033181 TiB2 Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005566 electron beam evaporation Methods 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000001755 magnetron sputter deposition Methods 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or 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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/0021—Reactive sputtering or evaporation
-
- 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
-
- 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
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
-
- 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
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
- C23C14/32—Vacuum evaporation by explosion; by evaporation and subsequent ionisation of the vapours, e.g. ion-plating
- C23C14/325—Electric arc evaporation
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
- B23B2222/04—Aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
- B23B2222/28—Details of hard metal, i.e. cemented carbide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2228/00—Properties of materials of tools or workpieces, materials of tools or workpieces applied in a specific manner
- B23B2228/10—Coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
- B23C2222/04—Aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
- B23C2222/28—Details of hard metal, i.e. cemented carbide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2228/00—Properties of materials of tools or workpieces, materials of tools or workpieces applied in a specific manner
- B23C2228/10—Coating
Definitions
- the present invention relates to machining of aluminium alloys. More particularly, the present invention relates to using inserts consisting of a substrate based on WC-Co and a hard and wear resistant refractory layer of ZrN resulting in an unexpected increase in tool life and in productivity.
- Aluminium is a material which, in general, is easy to machine with cemented carbide tools. Often, very high metal removal rates in combination with long tool life can be obtained. However, in some abrasive aluminium alloys e.g. high silicon content alloys, the machinability with cemented carbide tools is limited and the use of for instance diamond tools or diamond coated tools is most effective . Uncoated cemented carbide is normally used for the machining of aluminium alloys because uncoated cemented carbides provide wear resistance, toughness and good high temperature properties. So far no improvement has been found when using coated inserts except for diamond and diamond-like carbon coatings. US 5651295 discloses the use of a sharp edge physical vapor deposition coated cemented carbide cutting tool for machining of internal and external grooves in aluminium based alloys. The tool is coated with a TiN layer.
- US 4859124 discloses methods of making and of using a high density high strength titanium diboride comprising material. The method of use is as a cutting tool at relatively high speeds against aluminium based materials.
- US 5069092 provides an iron-based cutting tool, useful for machining aluminium based workpieces.
- the cutting tool is coated with a layer of silicon carbide having a thickness in the range of about 1-4 ⁇ m.
- EP 1563933 relates to coated cemented carbide cutting tool inserts for bimetal machining under wet conditions at moderate cutting speeds, particularly useful for face milling of engine blocks comprising alloys of aluminium and/or magnesium and cast iron.
- the inserts are characterized by a submicron WC-Co cemented carbide and a coating including an inner layer of TiCN with columnar grains followed by a layer of K-AI2O3 and a top layer of TiN.
- US 6617271 discloses a high-performance binder-less high purity tungsten carbide material, its manufacturing and applications as a cutting tool material such as for the use to machine aluminium alloys.
- US 6896452 relates to method of milling a material comprising aluminium and cast iron.
- a silicon nitride based cutting tool insert at a cutting speed of more than 1000 m/min an unexpected increase in tool life has been obtained.
- inserts provided with a ZrN layer display enhanced performance in aluminium alloy cutting preferably turning or milling.
- Fig 1 Fracture cross-section of the ZrN-layer according to the invention in as-deposited condition.
- A denotes the ZrN layer
- B denotes the WC-Co substrate.
- a coated cutting tool insert is provided with a cemented carbide substrate having a composition of 4-14 wt% Co, preferably 5-11 wt% Co, elements Ti,
- VIb corresponding to a total content of less than 5 wt%, preferably less than 2.5 wt% and rest WC.
- the mean intercept length of the tungsten carbide phase measured on a ground and polished representative cross section is in the range 0.25-0.75 ⁇ m, preferably 0.3-0.7 ⁇ m.
- the intercept length is measured by means of image analysis on micrographs with a magnification of 1000Ox and calculated as the average value of about 1000 intercept lengths.
- the cemented carbide contains only WC and Co .
- the cemented carbide contains 0.1-5.0 wt%, preferably 0.1-2.5 wt% of the cubic carbide forming elements Ti, Ta and/or Nb, which may be replaced by other carbides of elements from groups IVb, Vb or VIb of the periodic table.
- the cemented carbide contains 0.1-0.7 wt% Cr and/or V in addition to WC and Co.
- the Co content is 4-9 wt%, preferably 5-8 wt%.
- the Co content is 5-11 wt%.
- the cemented carbide substrate is provided with a coating of at least one layer of ZrN, preferably only one ZrN-layer, of a crystalline phase (PDF 35-0753) , as detected by X-ray diffraction (XRD) using CuKCC radiation in ⁇ -2 ⁇ and/or gracing incidence geometry.
- the ZrN phase may contain elements from the groups IVb-VIb, for example Ti, Nb, Hf, Cr, V up to 20 at-%, preferably up to 10 at-%, of the metal content.
- Nitrogen can partly be replaced by carbon, oxygen and/or boron corresponding to a concentration of up to 25% of the N concentration.
- the total layer thickness, measured on the clearance face, of the ZrN-layer (s) according to the present invention is between 0.1 and 10 ⁇ m, preferably between 0.5 and 5 ⁇ m with the total thickness of the non ZrN containing layer (s) being less than 10 ⁇ m.
- the present invention also relates to a method of making a cutting 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, comprising a cemented carbide substrate and a coating.
- a substrate consisting of 4-14 wt% Co, preferably 5-11 wt% Co, elements Ti, Ta, and/or Nb and/or Cr or other element from groups IVb, Vb or VIb corresponding to a total content of less than 5 wt%, preferably less than 2.5 wt%, and rest WC, and a mean intercept length of the tungsten carbide of 0.3-0.8 ⁇ m, preferably 0.4-0.8 ⁇ m, and depositing a coating by arc evaporation composed of one or more layers of refractory compounds of which at least one layer comprises a ZrN crystalline phase (PDF 35-0753) as detected by X-ray diffraction (XRD) in ⁇ -2 ⁇ and/or gracing incidence geometry.
- XRD X-ray diffraction
- the ZrN phase may contain elements from the groups IVb-VIb, for example Ti, Nb, Hf, Cr, V up to 20 at-%, preferably up to 10 at-%, of the metal content.
- Nitrogen can partly be replaced by carbon, oxygen and/or boron corresponding to a concentration of up to 25% of the N concentration.
- the method used to grow the layer, comprising ZrN phase of the present invention is based on arc evaporation of a cathode, under the following conditions:
- the evaporation current is between 70 A and 150 A depending on cathode size and cathode material. When using cathodes of 63 mm in diameter the evaporation current is preferably between 80 A and 140 A.
- the substrate bias is between -10 V and -80 V, preferably between -20 V and -60 V.
- the deposition temperature is between 400°C and 700°C, preferably between 500°C and 700°C.
- the atmosphere consists preferably of N 2 at a total pressure of 0.5 Pa to 10 Pa, preferably 2 Pa to 8 Pa.
- the present invention has been described with reference to layer (s) containing a ZrN phase deposited using arc evaporation. It is obvious that ZrN phase containing layer (s) also could be produced using other PVD-technologies such as magnetron sputtering, electron beam evaporation, ion plating or laser ablation .
- the present invention also relates to the use of inserts according to above for machining of aluminium alloys, at cutting speeds of 500-1600 m/min, cutting depths of 0.5-10 mm and feeds of 0.05-2.0 mm/rev in turning applications or 0.05-2.0 mm/tooth in milling applications.
- Grade A A cemented carbide substrate according to the invention, with the average composition 6.0 wt% Co, 0.28 wt% Cr and balance WC, and a mean intercept length of WC in the sintered substrate of about 0.45 ⁇ m was produced by conventional milling of powders, pressing of green compacts and subsequent sintering at 1400 °C.
- the substrate was coated, as described below, with a 3.5 ⁇ m thick layer of ZrN, see Fig. 1.
- Grade B A cemented carbide cutting tool, with a cemented carbide substrate according to Grade A was coated with a 3.4 ⁇ m thick layer of Tio.33Alo.67N.
- Grade C A uncoated cemented carbide cutting tool with a cemented carbide according to grade A.
- Grade D A cemented carbide substrate according to the invention, with the average composition 10.0 wt% Co, 0.45 wt% Cr and balance WC, and a mean intercept length of WC in the sintered substrate of about 0.4 ⁇ m was produced by conventional milling of powders, pressing of green compacts and subsequent sintering at 1400 °C.
- the substrate was coated, as described below, with a 2.1 ⁇ m thick layer of ZrN.
- Grade E A cemented carbide cutting tool, with a cemented carbide substrate according to Grade D was coated with a 2.2 ⁇ m thick layer of Tio.33Alo.67N.
- the substrates were cleaned in ultrasonic baths using alkali solution and alcohol and subsequently placed in the PVD-system using a fixture of three-fold rotation.
- the shortest cathode-to-substrate distance was 130 mm.
- the system was evacuated to a pressure of less than 2.0xl0 ⁇ 3 Pa, after which the substrates were sputter cleaned with Ar ions.
- the layers were grown using arc evaporation of Zr cathodes (63 mm in diameter) .
- the deposition was carried out in a 99.995% pure N 2 atmosphere at a total pressure of 7.0 Pa, using a substrate bias of -52 V.
- the deposition temperature was about 530°C.
- the thickness of the coating layer was measured in the middle of the clearance face of the cutting tool insert.
- Phase identification of the ZrN in as-deposited condition was made by X-ray diffraction using a constant gracing incident angle of 1° between primary beam and sample surface and scanning the detector in order to magnify peaks originating from the layer, see Figure 2 b.
- the test was stopped when the flank wear reached a maximum value of 0.15 mm.
- Example 3 Grades A, B, and C were tested in machining of an aluminium gear casing.
- the test was stopped when the surface integrity of the machined component was unsatisfactory.
- the test was stopped when the flank wear reached a maximum value of 0.2 mm.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Physical Vapour Deposition (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08845811A EP2217743A1 (en) | 2007-11-01 | 2008-10-29 | Coated cutting insert for machining of aluminium based alloys |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0702411A SE0702411L (sv) | 2007-11-01 | 2007-11-01 | Belagt skär för bearbetning av aluminiumbaserade legeringar |
SE0702411-0 | 2007-11-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009058082A1 true WO2009058082A1 (en) | 2009-05-07 |
Family
ID=40591297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2008/051230 WO2009058082A1 (en) | 2007-11-01 | 2008-10-29 | Coated cutting insert for machining of aluminium based alloys |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2217743A1 (sv) |
SE (1) | SE0702411L (sv) |
WO (1) | WO2009058082A1 (sv) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102899611A (zh) * | 2012-02-27 | 2013-01-30 | 河北农业大学 | 一种在铝合金表面沉积ZrN薄膜工艺的研究 |
CN105195768A (zh) * | 2015-09-10 | 2015-12-30 | 苏州华冲精密机械有限公司 | 一种高硬度隔热刀具 |
CN106637077A (zh) * | 2016-11-15 | 2017-05-10 | 山东大学 | 一种刀具表面涂层的制备方法及制备得到的涂层 |
RU2622545C1 (ru) * | 2015-12-15 | 2017-06-16 | федеральное государственное бюджетное образовательное учреждение высшего образования "Ульяновский государственный технический университет" | Способ получения многослойного покрытия для режущего инструмента |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4895765A (en) * | 1985-09-30 | 1990-01-23 | Union Carbide Corporation | Titanium nitride and zirconium nitride coating compositions, coated articles and methods of manufacture |
US5075181A (en) * | 1989-05-05 | 1991-12-24 | Kennametal Inc. | High hardness/high compressive stress multilayer coated tool |
WO2006109457A1 (ja) * | 2005-04-07 | 2006-10-19 | Sumitomo Electric Hardmetal Corp. | 刃先交換型切削チップ |
-
2007
- 2007-11-01 SE SE0702411A patent/SE0702411L/sv not_active Application Discontinuation
-
2008
- 2008-10-29 EP EP08845811A patent/EP2217743A1/en not_active Withdrawn
- 2008-10-29 WO PCT/SE2008/051230 patent/WO2009058082A1/en active Application Filing
Patent Citations (3)
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CN102899611A (zh) * | 2012-02-27 | 2013-01-30 | 河北农业大学 | 一种在铝合金表面沉积ZrN薄膜工艺的研究 |
CN105195768A (zh) * | 2015-09-10 | 2015-12-30 | 苏州华冲精密机械有限公司 | 一种高硬度隔热刀具 |
RU2622545C1 (ru) * | 2015-12-15 | 2017-06-16 | федеральное государственное бюджетное образовательное учреждение высшего образования "Ульяновский государственный технический университет" | Способ получения многослойного покрытия для режущего инструмента |
CN106637077A (zh) * | 2016-11-15 | 2017-05-10 | 山东大学 | 一种刀具表面涂层的制备方法及制备得到的涂层 |
CN106637077B (zh) * | 2016-11-15 | 2020-11-24 | 山东大学 | 一种刀具表面涂层的制备方法及制备得到的涂层 |
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EP2217743A1 (en) | 2010-08-18 |
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