WO2011122553A1 - 切削工具 - Google Patents
切削工具 Download PDFInfo
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- WO2011122553A1 WO2011122553A1 PCT/JP2011/057627 JP2011057627W WO2011122553A1 WO 2011122553 A1 WO2011122553 A1 WO 2011122553A1 JP 2011057627 W JP2011057627 W JP 2011057627W WO 2011122553 A1 WO2011122553 A1 WO 2011122553A1
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- coating layer
- flank
- rake face
- face
- composition
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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
- 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
- C23C14/0664—Carbonitrides
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- 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
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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
- 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
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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
- 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
- C23C14/08—Oxides
- C23C14/081—Oxides of aluminium, magnesium or beryllium
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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
- 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
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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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/58—After-treatment
- C23C14/5806—Thermal treatment
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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
- C23C28/042—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 including a refractory ceramic layer, e.g. refractory metal oxides, ZrO2, rare earth oxides
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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
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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
- C23C28/40—Coatings including alternating layers following a pattern, a periodic or defined repetition
- C23C28/42—Coatings including alternating layers following a pattern, a periodic or defined repetition characterized by the composition of the alternating layers
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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
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/24—Cutters, for shaping with chip breaker, guide or deflector
Definitions
- the present invention relates to a cutting tool having a coating layer formed on the surface of a substrate.
- sintered alloys such as cemented carbide and cermet, diamond, and cBN (cubic boron nitride)
- a method of improving the wear resistance, slidability, and fracture resistance by forming a coating layer on the surface of a high-hardness sintered body and a substrate made of a ceramic such as alumina or silicon nitride is used.
- a nitride layer mainly composed of Ti or Al is actively researched using a physical vapor deposition method such as an arc ion plating method or a sputtering method. Improvements to extend life are continued.
- the surface-coated tools provided with these coating layers have been devised in addition to the coating material elements in order to cope with changes in the cutting environment such as an increase in cutting speed and diversification of work materials. ing.
- Patent Document 1 in a surface-coated tool in which a surface of a base is coated with a coating such as TiAlN, the ratio of Ti can be made higher at the flank than at the rake face, and the progress of welding and wear on the rake face can be suppressed It is described that the boundary damage on the flank is suppressed.
- Patent Document 2 a TiAlN-based hard coating having a thickness of 1 to 5 ⁇ m is formed on the surface of a substrate, and coarse particles having a size larger than the thickness present in the hard coating are 5 area% or less. Further, it is described that when the surface roughness Ra is 0.1 ⁇ m or less or the surface roughness Rz is 1 ⁇ m or less, the welding resistance and the wear resistance of the hard coating are improved.
- the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a cutting tool having a coating layer that can locally exhibit optimum cutting performance.
- the content ratio of Al is higher than the composition in the above, and the composition of the droplets existing on the flank face is higher than that in the flank face of the coating layer.
- the ratio between the Al content ratio Al DR of the droplets present on the rake face and the Al content ratio Al bR of the rake face of the coating layer is 1.05 ⁇ Al DR / Al bR. ⁇ 1.25, and the ratio of the Ti content ratio Ti DF of the droplets existing on the flank face to the Ti content ratio Ti aF on the flank face of the coating layer is 1.03 ⁇ Ti DF / Ti aF It is desirable that ⁇ 1.2.
- the coating layer formed on the surface of the substrate is present on the rake face because the composition of the droplet present on the rake face contains more Al than the composition on the rake face of the coating layer.
- the hardness and oxidation resistance of the droplet are increased.
- the coating layer formed on the surface of the substrate is present on the rake face because the composition of the droplet present on the rake face contains more Al than the composition on the rake face of the coating layer.
- the composition of the droplet existing on the flank has a higher content of Ti than the composition on the flank of the coating layer, so the droplet on the surface of the flank has a high fracture toughness value,
- the droplet on the surface of the coating layer becomes a cushioning material that absorbs the impact, and the impact can be reduced compared to the case where the impact is directly applied to the coating layer.
- the fracture resistance of the coating layer on the flank is improved. Can do.
- the ratio of the Al content ratio Al DR of the droplets present on the rake face to the Al content ratio Al bR of the rake face of the coating layer is 1.05 ⁇ Al DR / Al bR ⁇ 1.25
- the ratio of the Ti content ratio Ti DF of the droplets on the flank and the Ti content ratio Ti bF on the flank of the coating layer is 1.05 ⁇ Ti DF / Ti bF ⁇ 1.2
- the fracture resistance on the flank is further improved.
- the calculated average roughness on the rake face of the coating layer is Ra R
- the temperature rise of the coating layer on the rake face is suppressed and resistance is improved if it is within the range of 0.07 ⁇ m ⁇ Ra R ⁇ 0.3 ⁇ m.
- the effect of increasing the wear resistance is high, and the welding resistance can be improved.
- the arithmetic average roughness on the flank of the coating layer is Ra F
- the surface roughness is within a range of 0.05 ⁇ m ⁇ Ra F ⁇ 0.15 ⁇ m
- FIG. 1 It is a schematic perspective view which shows an example of the cutting tool of this invention. It is a cross-sectional schematic diagram which shows the 1st embodiment of the cutting tool of FIG. It is a SEM photograph about the coating layer surface of the rake face of the cutting tool of FIG. It is a SEM photograph about the coating layer surface of the flank of the cutting tool of FIG.
- FIG. 1 is a schematic perspective view of a cutting tool which is a preferred embodiment example
- FIG. 2 are schematic sectional views of a first embodiment of the present invention
- 3 and 4 which are scanning electron microscope (SEM) photographs of the surface of the coating layer with respect to the rake face and flank face of the cutting tool.
- a cutting tool (hereinafter simply referred to as a tool) 1 according to the present invention includes a rake face 3 on a main surface, a flank face 4 on a side surface, and an intersection of the rake face 3 and the flank face 4.
- a ridge line is provided with a cutting edge 5, and a coating layer 6 is formed on the surface of the substrate 2.
- the coating layer 6 has a particulate material called a droplet 7 on the surface.
- the composition of the droplet 7 is such that the Al content ratio Al DR of the droplet 7 formed on the surface of the rake face 3 is compared with the Al content ratio Al bR in the coating layer 6 on the rake face 3. It is important that the Ti content ratio Ti DF of the droplet 7 formed on the surface of the flank 4 is higher than the Ti content ratio Ti bF of the coating layer 6 on the flank 4.
- the droplets 7 are present for a long time without being worn out. It is possible to prevent the temperature of the coating layer 6 from rising without sticking to the surface of the coating layer 6 on the rake face 3. And since cutting oil can fully be hold
- the Ti content ratio Ti DF of the droplet 7 generated on the flank 4 surface of the coating layer 6 is higher than the Ti content Ti bf contained in the coating layer 6 of the flank 4.
- the droplet 7 existing on the surface of the coating layer 6 becomes a cushioning material, the impact applied to the coating layer 6 can be reduced, and the fracture resistance of the coating layer 6 can be improved.
- the surface roughness can be reduced.
- the content ratio of each metal component of the coating layer can be measured by electron beam microanalysis (EPMA) energy dispersion spectroscopy (EDS) or X-ray photoelectron spectroscopy (XPS).
- EPMA electron beam microanalysis
- EDS energy dispersion spectroscopy
- XPS X-ray photoelectron spectroscopy
- the Al content ratio Al DR of the droplet 7 formed on the surface of the rake face 3 of the coating layer 6 is 1 to the Al content ratio Al bR of the coating layer 6 of the rake face 3. .05 ⁇ Al DR / Al bR ⁇ 1.25 is desirable. This is because when the ratio Al DR / Al bR is 1.05 or more, the heat resistance and oxidation resistance of the droplet 7 are improved. Further, when the ratio Al DR / Al bR is 1.25 or less, the crystal structure of the droplet 7 does not change from cubic to hexagonal, and wear resistance is high. A particularly desirable range of the ratio Al DR / Al bR is 1.06 ⁇ Al DR / Al bR ⁇ 1.15.
- the Ti content ratio Ti DF contained in the droplets 7 formed on the flank 4 of the covering layer 6 is 1.
- the ratio Ti DF / Ti aF is 1.05 or more, the fracture toughness value of the droplet 7 on the flank 4 is improved.
- the work surface of the work material can be obtained without chipping or chipping of the cutting tool 1 during cutting. It becomes smooth.
- the ratio Ti DF / Ti aF is 1.2 or less, the hardness and heat resistance of the droplet 7 on the flank 4 are not reduced, and wear of the flank is suppressed during cutting.
- a particularly desirable range of the ratio Ti DF / Ti bF is 1.05 ⁇ Ti DF / Ti bF ⁇ 1.12.
- the calculated average roughness of the rake face 3 of the coating layer 6 is Ra R
- the temperature rise of the coating layer 6 on the rake face 3 is suppressed if it is within the range of 0.07 ⁇ m ⁇ Ra R ⁇ 0.3 ⁇ m.
- the effect of increasing the wear resistance is high, and the welding resistance can be improved.
- the arithmetic average roughness of the flank 4 of the covering layer 6 is Ra F
- the surface of the work material after processing is finished finely within the range of 0.05 ⁇ m ⁇ Ra F ⁇ 0.15 ⁇ m. be able to.
- the composition of the coating layer 6 on the rake face is Ti a Al b M d (C 1-x N x ) (where M is Si, W, Nb, Mo, Ta, Cr, Zr, Hf, and Y). At least one selected, 0.35 ⁇ a ⁇ 0.55, 0.3 ⁇ b ⁇ 0.6, 0.0 ⁇ d ⁇ 0.25, 0 ⁇ x ⁇ 1).
- the coating layer 6 has a high oxidation start temperature, high oxidation resistance, and can reduce internal stress, and has high fracture resistance.
- the coating layer 6 since the coating layer 6 has high hardness and high adhesion to the substrate 2, the coating layer 6 has high wear resistance and fracture resistance under difficult cutting conditions such as machining of difficult-to-cut materials, dry cutting, and high-speed cutting. It will be excellent.
- a (Ti composition ratio) in the coating layer 6 is smaller than 0.35, the crystal structure of the coating layer 6 changes from a cubic crystal to a hexagonal crystal and the hardness decreases, so that the wear resistance decreases.
- a (Ti composition ratio) is larger than 0.55, the oxidation resistance and heat resistance of the coating layer 6 are lowered.
- a particularly desirable range for a is 0.45 ⁇ a ⁇ 0.5.
- b (Al composition ratio) is smaller than 0.3, the oxidation resistance and heat resistance of the coating layer 6 are lowered. If b (Al composition ratio) is larger than 0.6, the crystal structure of the coating layer 6 tends to change from cubic to hexagonal and the hardness decreases.
- a particularly desirable range of b is 0.48 ⁇ b ⁇ 0.52.
- the thickness of the coating layer is as thin as 50 nm or less, the cubic crystal structure may be maintained even if b is larger than 0.6 depending on the structure of the layers stacked above and below.
- d metal M composition ratio
- a particularly desirable range of d is 0.01 ⁇ d ⁇ 0.22.
- the metal M is at least one selected from Si, W, Nb, Mo, Ta, Hf, Cr, Zr, and Y. Among them, the inclusion of Si or W is desirable from the viewpoint of excellent hardness, and Nb or It is desirable that Mo is contained because it is most excellent in wear resistance and oxidation resistance.
- C and N which are non-metallic components of the coating layer 6 are excellent in hardness and toughness required for a cutting tool, and a particularly desirable range of x (N composition ratio) is 0.5 ⁇ x ⁇ 1. .
- a physical vapor deposition (PVD) method such as an ion plating method or a sputtering method can be applied as a method for forming the surface coating layer 6, and a method for forming such droplets 7 on the surface of the coating layer 6 is an arc.
- PVD physical vapor deposition
- An ion plating method is preferably used.
- the substrate 2 may be a cemented carbide or cermet hard alloy composed of a hard phase mainly composed of tungsten carbide or titanium carbonitride and a binder phase mainly composed of an iron group metal such as cobalt or nickel, or silicon nitride.
- Hard materials such as ultra-high pressure sintered bodies that fire ceramics and aluminum oxide as a main component, hard phases composed of polycrystalline diamond and cubic boron nitride and binder phases such as ceramics and iron group metals under ultra-high pressure Preferably used.
- a tool-shaped substrate is produced using a conventionally known method.
- a coating layer is formed on the surface of the substrate.
- a physical vapor deposition (PVD) method such as an ion plating method or a sputtering method can be suitably applied as the coating layer forming method.
- PVD physical vapor deposition
- the coating layer is formed by an ion plating method, metal titanium (Ti), metal aluminum (Al), and optionally metal M (where M is Si,
- a metal target, a composite alloy target or a sintered body target each independently containing at least one selected from W, Nb, Mo, Ta, Hf, Cr, Zr and Y) Set to.
- a sub-target containing a larger amount of Al or Ti than the target is prepared together with the target containing the metal, and the sub-target containing a large amount of Al component is placed on the upper wall surface of the chamber.
- the sub-target containing a large amount of components is set at the position of the side wall surface of the chamber, and the film is formed under the film-forming conditions described later, so that the composition of the formed coating layer and the composition of the droplets are configured as the present invention. Can do.
- a method for producing the target when a sintered target obtained by mixing and solidifying metal powder is used, droplets deposited on the surface of the coating layer are used rather than using an alloy target obtained by melting and resolidifying a metal component. The amount tends to increase.
- Film formation conditions include using these targets to evaporate and ionize the metal source by arc discharge, glow discharge, or the like, and simultaneously use nitrogen (N 2 ) gas as a nitrogen source or methane (CH 4 ) / acetylene as a carbon source (A coating layer and a droplet are formed by an ion plating method or a sputtering method in which a C 2 H 2 ) gas is reacted.
- the base is set so that the flank face is substantially parallel to the side face of the chamber and the scoop face is substantially parallel to the upper face of the chamber.
- an arc current of 100 to 200 A for the main target, 70 to 150 A for the sub target containing a large amount of Ti component on the side surface, and 150 to 250 A for the sub target containing a large amount of Al component on the upper surface The composition of the coating layer itself and the composition of the droplet can be controlled to be different, and the droplet present on the rake face has a higher Al content ratio than the composition of the coating layer on the rake face and exists on the flank face.
- the composition of the droplet can be configured to have a higher Ti content ratio than the composition of the coating layer on the flank. Note that an arc current flows through a sub-target containing a large amount of the Ti component on the side surface only immediately before the film formation is completed.
- a coating layer having a high hardness can be produced in consideration of the crystal structure of the coating layer, and at the same time, 20 to It is preferable to apply a bias voltage of 200V.
- a target having two compositions a first target having a composition close to the composition of the first coating layer and a second target having a composition close to the composition of the second coating layer, is used.
- the target for adjusting the droplet composition is mounted on the side surface of the film forming apparatus, and is mounted at a position close to the position of the first target or the second target on the upper wall surface of the chamber, and the sample is rotated in the apparatus. It can be formed by film formation.
- tungsten carbide (WC) powder having an average particle diameter of 0.8 ⁇ m, 10% by mass of metallic cobalt (Co) powder having an average particle diameter of 1.2 ⁇ m, and vanadium carbide (VC) powder having an average particle diameter of 1.0 ⁇ m.
- Chromium carbide (Cr 3 C 2 ) powder of 0.1% by mass and average particle size of 1.0 ⁇ m was added and mixed at a rate of 0.3% by mass, and formed into a throwaway tip shape of DCGT11T302MFCQ shape by press molding. Then, the binder removal process was performed, and it sintered at 1450 degreeC in the vacuum of 0.01 Pa for 1 hour, and produced the cemented carbide alloy. Further, the rake face surface of each sample was polished by blasting, brushing or the like. Further, the prepared cemented carbide was subjected to blade edge processing (honing) by brushing.
- the film formation temperature and bias voltage shown in Table 1 are applied to the substrate thus prepared, and the arc current shown in Table 1 is passed through the main target, the side sub-target, and the top sub-target, respectively.
- a coating layer having the composition shown in Table 2 was formed.
- the sub-target containing a large amount of the Ti component on the side faced an arc current only immediately before the film formation was completed.
- the composition of each of the three rake faces and flank faces on the surface of the coating layer and 10 droplets each having a diameter of 3 ⁇ m or more formed on the rake face and flank face energy It measured by the dispersion
- EDS distribution spectroscopy analysis
- the length of the rake face and the flank face was 2 mm and measured at three locations with a stylus type surface roughness meter (SURFCOM, manufactured by Tokyo Seimitsu Co., Ltd.) and averaged to calculate Ra r , Rz r , Ra f and Rz f .
- the cutoff value was 0.25 mm and the evaluation length was 1.25 mm.
- Example 4 Using the cutting insert substrate of Example 1, two types of targets shown in Table 4 were mounted on the side surface and one type on the upper surface, and the coating layer shown in Table 4 was formed in the same manner as in Example 1. Note that a sintered target was used as the main target, and one set was set on the side wall surface of the chamber. In addition, the alloy target or sintered target of each metal shown in Table 4 was used as the sub-target, and one set was set on the wall surface at the set position shown in Table 4 of the chamber.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Ceramic Engineering (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Physical Vapour Deposition (AREA)
Abstract
Description
次に、本発明の切削工具の製造方法について説明する。
このとき、本発明によれば、上記金属を含有するターゲットとともに別途AlまたはTiを上記ターゲットより多く含有するサブターゲットを準備し、Al成分を多く含有するサブターゲットはチャンバの上壁面位置に、Ti成分を多く含むサブターゲットはチャンバの側壁面位置にセットし、後述の成膜条件にて成膜することによって、成膜された被覆層の組成およびドロップレットの組成を本発明の構成とすることができる。なお、ターゲットの作製方法としては、金属粉末を混合して焼き固めた焼結ターゲットを用いると、金属成分を溶融させて再度固化させた合金ターゲットを用いるより、被覆層の表面に析出するドロップレットの量が多くなる傾向にある。
切削方法:外径旋削加工
被削材 :炭素鋼(S45C)
切削速度:120m/分
送り :0.05mm/rev
切り込み:1.2mm
切削状態:湿式
評価方法:180分切削後のすくい面クレータ摩耗の有無、チッピングの有無を光学顕微鏡にて測定した。また、被削材の面粗度は接触式表面粗さ計(東京精密社製SURFCOM)にて算術平均粗さRaを測定した。
2 基体
3 すくい面
4 逃げ面
5 切刃
6 被覆層
7 ドロップレット
Claims (4)
- すくい面と逃げ面との交差稜線に切刃を有して、基体の表面にTiaAlbMd(C1-xNx)(ただし、MはSi、W、Nb、Mo、Ta、Hf、Cr、ZrおよびYから選ばれる少なくとも1種、0.35≦a≦0.55、0.3≦b≦0.6、0≦d≦0.25、a+b+d=1、0≦x≦1)からなる被覆層を被覆し、該被覆層の表面にはドロップレットが存在するとともに、前記すくい面に存在するドロップレットの組成は、前記すくい面における前記被覆層の組成に比べてAlの含有比率が高く、かつ前記逃げ面に存在するドロップレットの組成は、前記逃げ面における前記被覆層の組成に比べてTiの含有比率が高い切削工具。
- 前記すくい面に存在するドロップレットのAlの含有比率AlDRと前記被覆層の前記すくい面におけるAlの含有比率AlbRとの比が1.05≦AlDR/AlbR≦1.25であり、前記逃げ面に存在するドロップレットのTiの平均含有比率TiDFと前記被覆層の前記逃げ面におけるTiの含有比率TiaFとの比が1.03≦TiDF/TiaF≦1.2である請求項1項記載の切削工具。
- 前記被覆層のすくい面の算術平均表面粗さおよび最大高さをそれぞれRaR、RzRとし、前記被覆層の逃げ面の算術平均表面粗さおよび最大高さをそれぞれRaF、RzFとしたとき、0.07μm≦RaR≦0.3μm、0.3μm≦RzR≦0.9μm、0.05μm≦RaF≦0.15μm、0.15μm≦RzF≦0.6μmである請求項1または2項記載の切削工具。
- 前記被覆層が、Tia1Alb1Md1(C1-x1Nx1)(ただし、0≦a1≦1、0≦b1≦0.8、0≦d1≦0.4、a1+b1+d1=1、0≦x≦1)で表される第1被覆層と、Tia2Alb2Md2(C1-x2Nx2)(ただし、0≦a2≦1、0≦b2≦0.8、0≦d2≦0.4、a2+b2+d2=1、a1=a2かつb1=b2かつc1=c2は除く。)で表される第2被覆層とが10層以上繰り返し交互に積層された構成からなる請求項1乃至3のいずれか記載の切削工具。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011532457A JP4975194B2 (ja) | 2010-03-29 | 2011-03-28 | 切削工具 |
| CN201180016829.5A CN102821897B (zh) | 2010-03-29 | 2011-03-28 | 切削工具 |
| EP11762777.8A EP2554303B1 (en) | 2010-03-29 | 2011-03-28 | Cutting tool |
| US13/638,574 US8623525B2 (en) | 2010-03-29 | 2011-03-28 | Cutting tool |
| KR1020127027150A KR101635488B1 (ko) | 2010-03-29 | 2011-03-28 | 절삭 공구 |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2010074581 | 2010-03-29 | ||
| JP2010-074581 | 2010-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011122553A1 true WO2011122553A1 (ja) | 2011-10-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2011/057627 Ceased WO2011122553A1 (ja) | 2010-03-29 | 2011-03-28 | 切削工具 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8623525B2 (ja) |
| EP (1) | EP2554303B1 (ja) |
| JP (1) | JP4975194B2 (ja) |
| KR (1) | KR101635488B1 (ja) |
| CN (1) | CN102821897B (ja) |
| WO (1) | WO2011122553A1 (ja) |
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| WO2017159731A1 (ja) * | 2016-03-17 | 2017-09-21 | 三菱マテリアル株式会社 | 耐チッピング性、耐摩耗性にすぐれた表面被覆切削工具 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9643257B2 (en) | 2012-06-27 | 2017-05-09 | Kyocera Corporation | Cutting tool |
| WO2014003131A1 (ja) * | 2012-06-27 | 2014-01-03 | 京セラ株式会社 | 切削工具 |
| EP2868408A4 (en) * | 2012-06-27 | 2016-02-24 | Kyocera Corp | CUTTER |
| JPWO2014003131A1 (ja) * | 2012-06-27 | 2016-06-02 | 京セラ株式会社 | 切削工具 |
| WO2014104111A1 (ja) * | 2012-12-27 | 2014-07-03 | 京セラ株式会社 | 切削工具 |
| JPWO2014104111A1 (ja) * | 2012-12-27 | 2017-01-12 | 京セラ株式会社 | 切削工具 |
| US11027338B2 (en) | 2015-05-28 | 2021-06-08 | Kyocera Corporation | Cutting insert, cutting tool, and method for manufacturing machined product |
| JPWO2016189935A1 (ja) * | 2015-05-28 | 2018-03-29 | 京セラ株式会社 | 切削インサートおよび切削工具、並びに切削加工物の製造方法 |
| WO2016189935A1 (ja) * | 2015-05-28 | 2016-12-01 | 京セラ株式会社 | 切削インサートおよび切削工具、並びに切削加工物の製造方法 |
| WO2017159731A1 (ja) * | 2016-03-17 | 2017-09-21 | 三菱マテリアル株式会社 | 耐チッピング性、耐摩耗性にすぐれた表面被覆切削工具 |
| WO2018155644A1 (ja) * | 2017-02-24 | 2018-08-30 | 京セラ株式会社 | 切削インサート及びこれを備えた切削工具 |
| JPWO2018155644A1 (ja) * | 2017-02-24 | 2019-12-26 | 京セラ株式会社 | 切削インサート及びこれを備えた切削工具 |
| JP2020121378A (ja) * | 2019-01-31 | 2020-08-13 | 三菱マテリアル株式会社 | 表面被覆切削工具 |
| JP7132548B2 (ja) | 2019-01-31 | 2022-09-07 | 三菱マテリアル株式会社 | 表面被覆切削工具 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101635488B1 (ko) | 2016-07-01 |
| EP2554303B1 (en) | 2017-03-01 |
| JP4975194B2 (ja) | 2012-07-11 |
| US8623525B2 (en) | 2014-01-07 |
| JPWO2011122553A1 (ja) | 2013-07-08 |
| CN102821897B (zh) | 2015-08-05 |
| CN102821897A (zh) | 2012-12-12 |
| EP2554303A4 (en) | 2015-09-09 |
| EP2554303A1 (en) | 2013-02-06 |
| KR20130006666A (ko) | 2013-01-17 |
| US20130022420A1 (en) | 2013-01-24 |
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