WO2017061059A1 - 表面被覆切削工具およびその製造方法 - Google Patents
表面被覆切削工具およびその製造方法 Download PDFInfo
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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
- 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
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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
- B23B27/148—Composition of the cutting inserts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
- B23P15/30—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools lathes or like tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/02—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for sharpening or cleaning cutting tools, e.g. files
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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
- 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
- C23C16/04—Coating on selected surface areas, e.g. using masks
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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
- 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
- C23C16/301—AIII BV compounds, where A is Al, Ga, In or Tl and B is N, P, As, Sb or Bi
- C23C16/303—Nitrides
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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
- 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
- C23C16/347—Carbon nitride
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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
- 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
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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
- 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
- C23C16/56—After-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
- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2224/00—Materials of tools or workpieces composed of a compound including a metal
- B23B2224/04—Aluminium oxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2224/00—Materials of tools or workpieces composed of a compound including a metal
- B23B2224/32—Titanium carbide nitride (TiCN)
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- 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
- B23B2228/04—Properties of materials of tools or workpieces, materials of tools or workpieces applied in a specific manner applied by chemical vapour deposition [CVD]
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- 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
- 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
- B23B2228/105—Coatings with specified thickness
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- 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 a surface-coated cutting tool and a manufacturing method thereof.
- Patent Document 1 JP 2013-063504 A (Patent Document 1), when the inclination angle formed by the normal line of the (0001) plane of Al 2 O 3 crystal grains to the normal line of the surface of the tool base is measured, A surface-coated cutting tool having a coating including an upper layer in which the area ratio of Al 2 O 3 crystal grains having an inclination angle of 0 to 10 degrees is 45 area% or more has been proposed.
- Patent Document 2 discloses that an Al 2 O 3 layer included in a film preferably includes columnar ⁇ -Al 2 O 3 crystal grains in the ⁇ 001> growth direction, and TC Cutting tool inserts with a texture factor of (006)> 1.4 have been proposed.
- the ⁇ -Al 2 O 3 layer is (001) -oriented so that the strength and thermal conductivity of the coating are improved, and chemicals represented by crater wear There is an effect of suppressing the mechanical damage.
- the orientation in a specific direction becomes too high, cracks are likely to develop at the grain boundaries, so that sudden chipping of the coating may occur.
- the present invention has been made in view of the above circumstances, and while maintaining high orientation in a specific direction as a whole tool, by controlling the orientation of the blade edge portion relatively low, high thermal conductivity is maintained, and the edge of the blade is maintained.
- An object of the present invention is to provide a surface-coated cutting tool capable of suppressing sudden chipping and a method for manufacturing the same.
- a surface-coated cutting tool is a surface-coated cutting tool having a rake face, a flank face, and a cutting edge ridge line that forms a boundary between the rake face and the flank face.
- a coating formed on the material, and the coating includes an ⁇ -Al 2 O 3 layer including a plurality of ⁇ -Al 2 O 3 crystal grains, and the ⁇ -Al 2 O 3 layer includes the cutting edge.
- the region between the imaginary line passing through a point 1 mm away from the edge of the blade edge and the edge of the edge of the edge and the average value of TC (006) in the first area in the orientation index TC (hkl) is a.
- the average value of the TC (006) in the second region or the third region is b, the relationship of ba> 0.5 is satisfied.
- a surface-coated cutting tool is a surface-coated cutting tool having a rake face, a flank face, and a cutting edge ridge line that forms a boundary between the rake face and the flank face.
- the coating includes an ⁇ -Al 2 O 3 layer including a plurality of ⁇ -Al 2 O 3 crystal grains, and the ⁇ -Al 2 O 3 layer includes A first region composed of the edge line of the cutting edge, an A region on the rake surface, and a B region on the flank surface, a region excluding the A region on the rake surface, and coated with the coating A second region that is a region that is present, and a third region that is a region that excludes the B region on the flank, and the A region is 1 mm from the cutting edge ridge line along the cutting edge ridge line on the rake face A region sandwiched between an imaginary line passing through a distant point and the edge of the cutting edge, and the region B is the cutting edge on the flank Is an area sandwiched between a virtual line passing through a point 1 mm away from the edge of the cutting edge along the line and the edge of the cutting edge, and the average value of TC (006) in the first area in the orientation index
- a method of manufacturing a surface-coated cutting tool includes a step of forming the coating film on the base material, and a step of performing a surface treatment on a portion corresponding to the first region in the coating film. ,including. With such a configuration, it is possible to manufacture a surface-coated cutting tool that can suppress sudden chipping of the cutting edge while maintaining high thermal conductivity.
- the surface treatment preferably includes at least a brush treatment or a blast treatment. Thereby, it is possible to advantageously manufacture a surface-coated cutting tool capable of suppressing sudden chipping of the blade edge while maintaining high thermal conductivity.
- the surface-coated cutting tool of this embodiment has a rake face, a flank face, and a cutting edge ridge line that forms a boundary between the rake face and the flank face.
- the rake face is a face that is mainly in contact with chips of the work material during cutting.
- the upper surface and the bottom surface of the surface-coated cutting tool are rake surfaces.
- the flank is a surface that faces a processed surface (a surface newly formed by cutting a work material).
- the side surface of the surface-coated cutting tool is a flank.
- the edge of the cutting edge forms a boundary between the rake face and the flank face. In other words, the portion where the rake face and the flank face intersect becomes the cutting edge ridge line.
- the cutting edge ridge line is a portion that usually becomes a cutting edge (hereinafter also referred to as “cutting edge”) in a surface-coated cutting tool.
- the surface-coated cutting tool of the present embodiment includes a base material and a film formed on the base material.
- the coating preferably covers the entire surface of the substrate. However, even if a part of the substrate is not coated with this coating or the configuration of the coating is partially different, it does not depart from the scope of the present invention.
- the surface-coated cutting tool of the present embodiment includes a drill, an end mill, a cutting edge replaceable cutting tip for a drill, a cutting edge replaceable cutting tip for an end mill, a cutting edge replaceable cutting tip for milling, a cutting edge replaceable cutting tip for turning, a metal saw, It can be suitably used as a cutting tool such as a gear cutting tool, reamer, or tap.
- any substrate can be used as long as it is conventionally known as this type of substrate.
- cemented carbide for example, WC-based cemented carbide, including WC, including Co or containing carbonitride such as Ti, Ta, Nb), cermet (TiC, TiN, TiCN, etc.) Main component
- high-speed steel ceramics (titanium carbide, silicon carbide, silicon nitride, aluminum nitride, aluminum oxide, etc.), cubic boron nitride sintered body, or diamond sintered body Is preferred.
- a cemented carbide particularly a WC-based cemented carbide, or a cermet (particularly a TiCN-based cermet).
- These base materials are particularly excellent in the balance between hardness and strength at high temperatures, and have excellent characteristics as base materials for surface-coated cutting tools for the above applications.
- the base material includes those having a chip breaker and those having no chip breaker.
- the shape of the edge of the blade edge includes sharp edges that are pointed, honing (the sharp edges are rounded), negative land (chamfered), and a combination of honing and negative lands. Any thing is included.
- the edge of the cutting edge is a line (no area) where the rake face and the flank face intersect when used to determine the range of the first region to be described later, honing or negative land The description will be made on the premise of the edge of the cutting edge before being applied.
- the coating includes an ⁇ -Al 2 O 3 layer including a plurality of ⁇ -Al 2 O 3 crystal grains.
- the coating can be composed of a plurality of layers including one or more ⁇ -Al 2 O 3 layers and further including other layers.
- the coating has an average layer thickness of 3 to 35 ⁇ m (3 ⁇ m or more and 35 ⁇ m or less.
- the average layer thickness of the coating is preferably 5 to 20 ⁇ m. If this average layer thickness is less than 3 ⁇ m, the strength of the film may be insufficient. If this average layer thickness exceeds 35 ⁇ m, peeling or destruction of the coating film may occur frequently when a large stress is applied between the coating film and the substrate in the intermittent processing.
- the ⁇ -Al 2 O 3 layer is mainly composed of ⁇ -Al 2 O 3 crystal grains. “Mainly comprising ⁇ -Al 2 O 3 crystal grains” means that among the Al 2 O 3 crystal grains constituting the ⁇ -Al 2 O 3 layer, 90% of ⁇ -Al 2 O 3 crystal grains are present. It means to occupy at least mass%. In addition, it is preferable that crystals of ⁇ -Al 2 O 3 are inevitably excluded unless at least one crystal grain of ⁇ -Al 2 O 3 , ⁇ -Al 2 O 3 and ⁇ -Al 2 O 3 is mixed. It means that an ⁇ -Al 2 O 3 layer is composed of grains.
- the ⁇ -Al 2 O 3 layer includes a first region including a cutting edge ridgeline, an A region on the rake face, and a B region on the flank face. Furthermore, it includes a second region which is a region excluding the A region on the rake face and which is a region covered with the film. Further, a third region that is a region excluding the B region on the flank is also included.
- the region A is a region sandwiched between a virtual line passing through a point 1 mm away from the cutting edge ridge line along the cutting edge ridge line and the cutting edge ridge line on the rake face.
- the area B is an area sandwiched between a virtual line passing through a point 1 mm away from the cutting edge ridge line along the cutting edge ridge line and the cutting edge ridge line on the flank face. Further, the first region includes an intersection of the blade edge line (hereinafter referred to as “corner”), an intersection point of the virtual line, and an intersection point of the blade edge line and the virtual line. The edge region is not included in the second region and the third region.
- orientation index TC (hkl) can be defined as in the following formula (1).
- I (hkl) represents the X-ray diffraction intensity of the (hkl) reflecting surface
- I 0 (hkl) represents the PDF card No. of ICDD.
- the standard intensity according to 00-04-2468 is indicated.
- n in Formula (1) shows the number of reflection used for calculation. (012), (104), (110), (006), (113), (024), (116) and (300) are used as (hkl) reflection. Therefore, n is 8 in this embodiment.
- TC (006) of a point measured at an arbitrary position between the first region and the second region or the third region in the ⁇ -Al 2 O 3 layer can be expressed by the following formula (2).
- ICDD International Center for Diffraction Data (International Diffraction Data Center).
- PDF registered trademark
- Powder Diffraction File is an abbreviation for Powder Diffraction File.
- TC (hkl) Measurement of TC (hkl) as described above is possible by analysis using an X-ray diffractometer.
- TC (hkl) can be measured, for example, using an X-ray diffractometer (trade name: “SmartLab (registered trademark) 3”, manufactured by Rigaku Corporation) under the following conditions.
- Characteristic X-ray Cu-K ⁇ Tube voltage: 45kV Tube current: 200mA
- X-ray diffraction method ⁇ -2 ⁇ method
- X-ray irradiation range A pinhole collimator is used to irradiate a range of about 0.3 mm in diameter with X-rays.
- TC (006) is measured on the rake face of the surface-coated cutting tool, for example.
- a plurality of measurement points for measuring the value of TC (006) can be set at any non-overlapping positions in the first region (A region), Similarly, a plurality of points can be set at arbitrary locations in the second region that do not overlap. Then, these measurement points are irradiated with X-rays to obtain a value of TC (006), and the average values a and b can be calculated.
- TC (006) may be measured on the flank of the surface-coated cutting tool when it is difficult to measure the orientation index TC (hkl) due to unevenness on the rake face.
- a plurality of measurement points for measuring the value of TC (006) can be set at arbitrary positions in the first area (B area) on the flank that do not overlap. It is possible to set a plurality of arbitrary locations that do not overlap. Then, these measurement points are irradiated with X-rays to obtain a value of TC (006), and the average values a and b can be calculated.
- the measurement points on the first region, the second region, and the third region it is preferable to select flat portions for the measurement points on the first region, the second region, and the third region, and to set the measurement points to two or more points that do not overlap. However, if the measurement points are always overlapped when trying to set the measurement points, only one measurement point may be set. If the measured value is clearly an abnormal value, it can be excluded.
- the corner A two Measurement points (first measurement point 1, second measurement point 2, third measurement point 3, fourth measurement point 4, fifth measurement point 5) are set at intervals of 0.75 mm from the corner that is the intersection of the edge of the cutting edge.
- X-ray diffraction (XRD) data can be obtained by irradiating these measurement points with X-rays under the above conditions, and the value of TC (006) can be calculated based on the XRD data. it can.
- the through-hole 13 is a hole which penetrates the surface (bottom surface) on the opposite side from the rake face of the surface-coated cutting tool.
- the first region is a region (A region) sandwiched between the cutting edge ridge line, a virtual line passing through the point 1 mm away from the cutting edge ridge line along the cutting edge ridge line on the rake face, and the cutting edge ridge line, and the clearance. It consists of the area
- interposed by the imaginary line which passes along the blade edge ridgeline on a surface and 1 mm away from the blade edge ridgeline, and the blade edge ridgeline. Therefore, based on FIG. 1, the first measurement point 1 and the second measurement are set at intervals of 0.75 mm from the corner along the diagonal line connecting the acute angle ( ⁇ 60 °) with the corner A and the corner C.
- Point 2 is included in the first region, and the average value of TC (006) values obtained at these measurement points is the value a.
- the second region is a region where the film is coated on the rake face except the region to be the A region as described above.
- the third measurement point 3, the fourth measurement point 4, and the fifth measurement point 5 set after the first measurement point 1 and the second measurement point 2 at intervals of 0.75 mm along the diagonal line are the first measurement point.
- the average value of TC (006) values included in the two regions and obtained at these measurement points is the value of b.
- the value of ba exceeds 0.5.
- the upper limit value of ba is 8 because the upper limit value of TC (006) is 8 from the definition of the above formula (1), and the relationship of ba ⁇ 8 is established.
- region a plurality of measurement points can be set as dispersed as possible, and the value of TC (006) may be measured at these measurement points.
- one point or two or more points can be set on an intermediate line between the cutting edge ridge line and a virtual line passing a point 1 mm away from the cutting edge ridge line along the cutting edge ridge line.
- the second region measurement point one point or two or more points can be set on a line 1 mm away from the boundary line with the first region to the second region side.
- the measurement point of the third region the first region One point or two or more points can be set on a line 1 mm away from the boundary line to the third region side.
- the surface-coated cutting tool is a regular polygon having a square shape or more, the measurement points can be set on a diagonal line as in the present embodiment. If the surface-coated cutting tool is circular, it is possible to set a measurement point as an arbitrary point on the edge of the cutting edge, or one or more points on a line passing through the center of the circle.
- a which is an average value in the first region of TC (006) satisfies the relationship of 0.01 ⁇ a ⁇ 7.
- b which is an average value in the second region of TC (006), preferably satisfies the relationship 7 ⁇ b ⁇ 8.
- the average value b preferably satisfies the relationship of 7 ⁇ b ⁇ 8.
- ⁇ TC in first region (104) >
- the ⁇ -Al 2 O 3 layer has a relationship of 0.05 ⁇ c / a ⁇ 1 in relation to the above a. It is preferable to satisfy the relationship.
- the (006) -oriented ⁇ -Al 2 O 3 layer has an orientation on the (104) plane.
- the ⁇ -Al 2 O 3 layer satisfies the relationship of 0.05 ⁇ c / a ⁇ 1 in the first region. As a result, it is possible to further suppress the crack growth at the grain boundary and to obtain an effect of more effectively suppressing the sudden chipping of the cutting edge.
- the measurement of TC (104) can be performed based on, for example, the XRD data used for the above-described measurement of TC (006). And if the value of c / a is computed in this embodiment, it will be more than 0.05 and less than 1.
- the coating can include other layers in addition to the ⁇ -Al 2 O 3 layer.
- Other layers include TiCNO layer, TiBN layer, TiC layer, TiN layer, TiAlN layer, TiSiN layer, AlCrN layer, TiAlSiN layer, TiAlNO layer, AlCrSiCN layer, TiCN layer, TiSiC layer, CrSiN layer, AlTiSiCO layer, TiSiCN layer, etc.
- the atomic ratio is not particularly limited, any conventionally known atomic ratio is included, and is not necessarily limited to the stoichiometric range.
- a metal element such as Ti, Al, Si, Zr, or Cr and a non-metal element such as N (nitrogen), O (oxygen), or C (carbon) are not necessarily stoichiometric. There is no need to constitute the composition.
- the TiCN layer is disposed between the ⁇ -Al 2 O 3 layer and the substrate. Since this TiCN layer is excellent in wear resistance, it is possible to impart suitable wear resistance to the coating.
- the TiCN layer is particularly preferably formed by MT-CVD (medium temperature CVD).
- the MT-CVD method can form a film at a relatively low temperature of about 850 to 900 ° C., and can reduce damage to the substrate due to heating during film formation.
- the TiCN layer preferably has an average layer thickness of 5 to 15 ⁇ m.
- the average thickness of the TiCN layer is more preferably 7 to 12 ⁇ m. If the average layer thickness is less than 5 ⁇ m, the wear may easily proceed. If the average layer thickness exceeds 15 ⁇ m, chipping resistance may be reduced.
- an outermost surface layer, an intermediate layer, and the like can be included in the coating.
- the outermost surface layer is a layer disposed on the outermost surface side of the coating.
- the intermediate layer is a layer disposed between the outermost surface layer and the ⁇ -Al 2 O 3 layer, between the ⁇ -Al 2 O 3 layer and the TiCN layer, or between the TiCN layer and the substrate.
- a TiN layer can be exemplified as the outermost surface layer.
- a TiCNO layer can be exemplified as the intermediate layer.
- the manufacturing method of the surface coating cutting tool of this embodiment includes the process of forming a film on a base material.
- it can manufacture suitably by forming a film on a base material by a chemical vapor deposition (CVD) method.
- CVD chemical vapor deposition
- the film forming temperature is 800 to 1200 ° C., which is higher than that of the physical vapor deposition method, thereby improving the adhesion to the substrate.
- other layers other than the ⁇ -Al 2 O 3 layer are formed in the coating, these layers can be formed under conventionally known conditions.
- AlCl 3 , HCl, CO 2 , H 2 S, O 2 and H 2 may be used as the source gas.
- the compounding amount is 0.5 to 5% by volume of AlCl 3 , 1 to 5% by volume of HCl, 0.5 to 1% by volume of CO 2 , 0.5 to 1% by volume of H 2 S, and the balance is H. 2
- various conditions of the CVD method are a temperature of 950 to 1050 ° C., a pressure of 1 to 10 kPa, and a gas flow rate (total gas amount) of 10 to 150 L / min.
- the thicknesses of the ⁇ -Al 2 O 3 layer and other layers can be adjusted by appropriately adjusting the film formation time.
- the manufacturing method of the surface-coated cutting tool of the present embodiment includes a step of performing a surface treatment on a portion corresponding to the first region in the coating.
- the surface treatment preferably includes at least brush treatment or blast treatment.
- surface treatment is performed on a portion corresponding to the first region of the film.
- An example in which blasting, for example, wet blasting is performed as the surface treatment will be described.
- solid fine particles having an average particle diameter of 25 to 100 ⁇ m are 10 to 80 ° with respect to the edge line 12 (for example, a corner) of the surface-coated cutting tool 11.
- the surface-coated cutting tool 11 is rotated at 15 to 50 rpm with the through hole 13 at the center of the rake face as the axial center.
- the projection pressure is 0.01 to 0.2 MPa (eg, 0.05 MPa)
- the projection distance is 2 to 20 mm (eg, 5 mm)
- the projection time is 5 to 10 seconds
- the concentration of the solid fine particles is 1 to 10% by volume (
- the balance can be a liquid mainly composed of water.
- ⁇ Preparation of substrate> A raw material powder blended at a composition ratio of 6.5% by mass of Co, 1.2% by mass of TaC, 0.8% by mass of TiC, 1.3% by mass of NbC, and the balance of WC. The mixture was wet-mixed for 8 hours with an attritor (wet media agitation type pulverizer, trade name (model number): “wet attritor 100S”, manufactured by Nippon Coke Kogyo Co., Ltd.) and then dried. Thereafter, the green compact was press-molded into a green compact at a pressure of 100 MPa, and the green compact was put into a vacuum container and held at 1400 ° C. for 1 hour in a vacuum of 2 Pa.
- attritor wet media agitation type pulverizer, trade name (model number): “wet attritor 100S”, manufactured by Nippon Coke Kogyo Co., Ltd.
- the green compact is taken out from the vacuum container, and the bottom surface is flat-polished, and then 0.6 mm honing is performed as a cutting edge treatment when viewed from the scooping surface with a SiC brush, and JIS (Japan Industrial Standard) B 4120 (2013)
- a base material manufactured by Sumitomo Electric Industries, Ltd.
- the prepared base materials were named Sample 1 to Sample 3 and classified into three groups in order to correspond to the following three formation conditions of ⁇ -Al 2 O 3 layers. Two samples were prepared for each group.
- a film was formed on the surface of each substrate obtained above. Specifically, a film was formed on the base material by the CVD method by setting the base material in a CVD apparatus.
- the film formation conditions are as described in Table 1, Table 2 and Table 3 below.
- Table 1 shows the ⁇ -Al 2 O 3 layer and the formation conditions (temperature condition, pressure condition and layer thickness) for producing each layer other than this ⁇ -Al 2 O 3 layer
- Table 2 shows ⁇ -Al 2
- the composition ratio of the source gas for producing each layer other than the O 3 layer is shown.
- Table 3 shows the composition ratio of the source gases for producing the ⁇ -Al 2 O 3 layer.
- the formation conditions of the ⁇ -Al 2 O 3 layer have three gas conditions of X, Y, and Z. A substrate to which these gas conditions are applied is designated as Sample 1, They were named Sample 2 and Sample 3.
- each layer other than the ⁇ -Al 2 O 3 layer and the ⁇ -Al 2 O 3 layer can be adjusted by appropriately adjusting the film formation time.
- MT-TiCN means a TiCN layer formed by MT-CVD method
- HT-TiCN means a TiCN layer formed by HT-CVD (High temperature CVD) method.
- TiN first layer means that a TiN layer is first formed on a substrate.
- the coating is composed of a TiN layer, an MT-TiCN layer, an HT-TiCN layer, a TiCNO layer, and an ⁇ -Al 2 O 3 layer in this order from the substrate side.
- the ⁇ -Al 2 O 3 layer is disposed on the outermost surface of the coating.
- ⁇ Surface treatment> A surface treatment was performed on the edge of the edge of each sample. Specifically, while rotating the surface-coated cutting tool at a speed of 60 rpm around the through-hole of the rake face as an axis, 70 ⁇ m-sized ceramic abrasive grains are applied from the tip of a nozzle arranged at an angle of 45 °, and wet blasting is performed. Treated. At this time, the projection pressure of the ceramic abrasive grains was 0.05 MPa, the projection distance was 5 mm, the projection time was 5 to 10 seconds, and the concentration was 5% by volume (the balance was water-based solvent).
- sample 1A each of the samples subjected to the surface treatment is referred to as sample 1A, sample 2A, and sample 3A.
- surface-coated cutting tools composed of Sample 1 to Sample 3 and Sample 1A to Sample 3A shown in Table 4 below were produced.
- XRD data was obtained by an ⁇ -2 ⁇ method using Cu—K ⁇ X-rays using an X-ray diffractometer (trade name: “SmartLab (registered trademark) 3”, manufactured by Rigaku Corporation).
- the tube voltage was 45 kV
- the tube current was 200 mA
- the X-ray irradiation range was a pinhole collimator
- X-rays were irradiated to a range of 0.3 mm in diameter on the rake face.
- the edge of the cutting edge as a line where the rake face and flank intersect is honed and disappears, but the rake face and flank are virtually extended to form an intersection.
- the first region includes a region (A region) sandwiched between a virtual line passing through a point 1 mm away from the edge of the blade along the edge of the edge of the rake face and the edge of the edge of the blade (A region).
- Point 1 and second measurement point 2 are included in the first region.
- the second region is a region covered with the film except for the region A on the rake face, the third measurement point 3, the fourth measurement point 4 and the fifth measurement point 5 are the first measurement point. It is included in two areas. Therefore, the average value of TC (006) values obtained at the first measurement point 1 and the second measurement point 2 is the value a.
- the average value of TC (006) values obtained at the third measurement point 3, the fourth measurement point 4, and the fifth measurement point 5 is the value b.
- the average value of the TC (104) values obtained at the first measurement point 1 and the second measurement point 2 is the value of c.
- the cutting tool was set on an NC lathe, the time from when the workpiece was cut until the cutting tool was damaged was measured, and this was evaluated as the life. It can be evaluated that sudden chipping of the cutting edge is suppressed as the lifetime until the defect is generated is longer. The results are also shown in Table 4 below.
- Sample 1A and Sample 2A it is understood from the value of TC (006) that the ⁇ -Al 2 O 3 layer is (006) oriented. Furthermore, due to the effect of the surface treatment, sudden chipping of the cutting edge was suppressed, and a good life was obtained in the cutting test. In particular, in Sample 2A, it is understood from the value of c / a that most of the ⁇ -Al 2 O 3 layer of the blade edge is (006) -oriented or (104) -oriented, and a better life is obtained in the cutting test. The result was obtained.
- Sample 1A and Sample 2A satisfy the relationship of ba> 0.5.
- Sample 2A also satisfies the relationship of 0.05 ⁇ c / a ⁇ 1, satisfies the relationship of 0.01 ⁇ a ⁇ 7, and also satisfies the relationship of 7 ⁇ b ⁇ 8.
- the surface-coated cutting tools of Sample 1A and Sample 2A are those of Sample 1, Sample 2, Sample 3 and Sample 3A that do not satisfy the relationship of ba> 0.5 and 0.05 ⁇ c / a ⁇ 1. Compared to a surface-coated cutting tool, it can be said that it is excellent in that sudden chipping of the cutting edge can be suppressed while maintaining high thermal conductivity.
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Abstract
Description
最初に本発明の実施態様を列記して説明する。
[本発明の実施形態の詳細]
以下、本発明の実施形態(以下「本実施形態」とも記す)についてさらに詳細に説明する。
本実施形態の表面被覆切削工具は、すくい面と、逃げ面と、このすくい面および逃げ面の境界をなす刃先稜線とを有している。
基材は、この種の基材として従来公知のものであればいずれも使用することができる。たとえば、超硬合金(たとえば、WC基超硬合金、WCのほか、Coを含み、あるいはTi、Ta、Nbなどの炭窒化物を添加したものも含む)、サーメット(TiC、TiN、TiCNなどを主成分とするもの)、高速度鋼、セラミックス(炭化チタン、炭化ケイ素、窒化ケイ素、窒化アルミニウム、酸化アルミニウムなど)、立方晶型窒化ホウ素焼結体、またはダイヤモンド焼結体のいずれかであることが好ましい。
被膜は、複数のα-Al2O3の結晶粒を含むα-Al2O3層を含んでいる。たとえば被膜は、α-Al2O3層を1層以上含み、さらに他の層を含んだ複数の層から構成することができる。
α-Al2O3層は、α-Al2O3の結晶粒を主成分とする。「α-Al2O3の結晶粒を主成分とする」とは、α-Al2O3層を構成するAl2O3の結晶粒のうち、α-Al2O3の結晶粒が90質量%以上を占めることを意味する。また、好ましくは不可避的にβ-Al2O3、γ-Al2O3およびκ-Al2O3の少なくとも1つ以上の結晶粒が混入する場合を除き、α-Al2O3の結晶粒からα-Al2O3層が構成されることを意味する。
α-Al2O3層は、刃先稜線と、すくい面上のA領域と、逃げ面上のB領域とからなる第1領域を含む。さらに、すくい面においてA領域を除いた領域であって、かつ被膜に被覆されている領域である第2領域を含む。また、逃げ面においてB領域を除いた領域である第3領域も含む。ここで、A領域はすくい面において、刃先稜線に沿って刃先稜線から1mm離れた地点を通る仮想線と刃先稜線とで挟まれる領域である。B領域は逃げ面において、刃先稜線に沿って刃先稜線から1mm離れた地点を通る仮想線と刃先稜線とで挟まれる領域である。また、第1領域には、刃先稜線の交点(以下、「コーナー」と記す)、上記仮想線の交点、および刃先稜線と仮想線とが交わる交点が含まれる。第2領域および第3領域に刃先稜線は含まれない。
α-Al2O3層は、配向性指数TC(hkl)においてTC(006)の第1領域における平均値がaであり、TC(006)の第2領域における平均値がbであるとき、b-a>0.5の関係を満たす。これにより、配向性の高い単一性を保って熱伝導率を高く維持しながら、刃先部分のみ配向性を比較的低く制御することで刃先の突発的なチッピングを抑制することができる。
また、第2領域はすくい面に形成されるが、該すくい面の表面に凹凸が存在して配向性指数TC(hkl)を測定することが困難であるケースがあり得る。この場合であっても、本実施形態のα-Al2O3層は、TC(006)の第3領域における平均値をbとしたとき、TC(006)の第1領域における平均値であるaに対して、b-a>0.5の関係を満たす。これにより、配向性の高い単一性を保って熱伝導率を高く維持しながら、刃先部分のみ配向性を比較的低く制御することで刃先の突発的なチッピングを抑制することができる。
管電圧: 45kV
管電流: 200mA
X線回折法: θ-2θ法
X線照射範囲: ピンホールコリメーターを使用し、直径0.3mm程度の範囲にX線を照射。
α-Al2O3層は、配向性指数TC(hkl)においてTC(104)の第1領域における平均値がcであるとき、上記aとの関係において0.05<c/a<1の関係を満たすことが好ましい。
被膜は上述のとおり、α-Al2O3層以外に他の層を含むことができる。他の層として、TiCNO層、TiBN層、TiC層、TiN層、TiAlN層、TiSiN層、AlCrN層、TiAlSiN層、TiAlNO層、AlCrSiCN層、TiCN層、TiSiC層、CrSiN層、AlTiSiCO層、TiSiCN層などを例示することができる。ここで本明細書において上記のように化合物を化学式で表わすとき、原子比を特に限定しない場合は従来公知のあらゆる原子比を含み、必ずしも化学量論的範囲のものに限定されない。
本実施形態の表面被覆切削工具の製造方法は、基材上に被膜を形成する工程を含む。本実施形態では、基材上に被膜を、化学気相蒸着(CVD)法により形成することによって好適に製造することができる。CVD法を用いると、成膜温度が800~1200℃となり、これは物理蒸着法と比較して高く、これにより基材との密着性が向上する。被膜のうち、α-Al2O3層以外の他の層が形成される場合、それらの層は従来公知の条件で形成することができる。
6.5質量%のCoと、1.2質量%のTaCと、0.8質量%のTiCと、1.3質量%のNbCと、残部のWCとからなる組成比で配合した原料粉末をアトライタ(湿式メディア攪拌型微粉砕機、商品名(型番):「湿式アトライタ100S」、日本コークス工業株式会社製)で8時間湿式混合した後、乾燥させた。その後100MPaの圧力で圧粉体にプレス成形し、この圧粉体を真空容器に入れて2Paの真空中で1400℃、1時間保持した。
上記で得られた各基材に対し、その表面に被膜を形成した。具体的には、基材をCVD装置内にセットすることにより、CVD法により基材上に被膜を形成した。被膜の形成条件は、以下の表1、表2および表3に記載したとおりである。表1に、α-Al2O3層およびこのα-Al2O3層以外の各層を作製するための形成条件(温度条件、圧力条件および層厚)を示し、表2にα-Al2O3層以外の各層を作製するための原料ガスの組成比を示した。表3に、α-Al2O3層を作製するための原料ガスの組成比を示した。表1および表3に示すように、α-Al2O3層の形成条件はX、Y、Zの3とおりのガス条件があり、これらのガス条件を適用した基材を、それぞれ試料1、試料2、試料3と名付けた。
各試料のそれぞれ1個について、その刃先稜線に対して表面処理を行なった。具体的には、表面被覆切削工具を60rpmの速度ですくい面の貫通孔を軸中心として回転させながら、粒径70μmのセラミック砥粒を45°の角度に配置したノズルの先端から与え、ウエットブラスト処理を施した。このときのセラミック砥粒の投射圧は0.05MPa、投射距離は5mm、投射時間は5~10秒、濃度は5体積%(残部は水を主成分とする溶媒)とした。特に、刃先稜線とノズル先端との間の距離が常に5mmとなるように、表面被覆切削工具の回転とノズルの動きとを同期させた。以下、各試料について表面処理を施した各1個を、試料1A、試料2A、試料3Aと称する。このようにして、以下の表4に示す試料1~試料3および試料1A~試料3Aからなる表面被覆切削工具を作製した。
各試料に対し、X線回折装置(商品名:「SmartLab(登録商標)3」、株式会社リガク製)を使用し、Cu-KαX線を用いたθ-2θ法によってXRDデータを得た。管電圧は45kV、管電流は200mAとし、X線照射範囲はピンホールコリメーターを使用し、すくい面上の直径0.3mmの範囲にX線を照射した。
また各試料に対し、以下の条件により切削試験を行なった。
切削速度: 500m/min
送り: 0.2mm/rev
切込み: 1.5mm
切削油: 湿式(水溶性油)
評価: 欠損するまでの時間(分)を寿命として測定。
表4に示すように、試料1および試料2は、TC(006)の値からα-Al2O3層が(006)配向していることが理解されるものの、切削試験から短寿命となることが分かった。切削試験を観察したところ、短時間で刃先のチッピングが発生し、これを起点に損傷が広がった。また、試料3および試料3Aは、TC(006)の値からα-Al2O3層が(006)配向していないことが理解される。切削試験を観察したところ、熱伝導性が低いために刃先温度が上昇し、塑性変形が起こり短寿命となった。
Claims (5)
- すくい面と、逃げ面と、該すくい面および該逃げ面の境界をなす刃先稜線とを有する表面被覆切削工具であって、
基材と該基材上に形成された被膜とを備え、
前記被膜は、複数のα-Al2O3の結晶粒を含むα-Al2O3層を含み、
前記α-Al2O3層は、前記刃先稜線と前記すくい面上のA領域と前記逃げ面上のB領域とからなる第1領域と、前記すくい面において前記A領域を除いた領域であって、かつ前記被膜に被覆されている領域である第2領域と、前記逃げ面において前記B領域を除いた領域である第3領域と、を含み、
前記A領域は、前記すくい面において前記刃先稜線に沿って前記刃先稜線から1mm離れた地点を通る仮想線と前記刃先稜線とで挟まれる領域であり、
前記B領域は、前記逃げ面において前記刃先稜線に沿って前記刃先稜線から1mm離れた地点を通る仮想線と前記刃先稜線とで挟まれる領域であり、
配向性指数TC(hkl)においてTC(006)の前記第1領域における平均値がaであり、前記TC(006)の前記第2領域または前記第3領域における平均値がbであるとき、b-a>0.5の関係を満たす、表面被覆切削工具。 - 前記aは、0.01<a<7の関係を満たし、前記bは、7<b<8の関係を満たす、請求項1に記載の表面被覆切削工具。
- 前記α-Al2O3層は、前記配向性指数TC(hkl)においてTC(104)の前記第1領域における平均値がcであるとき、前記aとの関係において0.05<c/a<1の関係を満たす、請求項1または請求項2に記載の表面被覆切削工具。
- 請求項1~請求項3のいずれか1項に記載の表面被覆切削工具の製造方法であって、
前記基材上に前記被膜を形成する工程と、
前記被膜において前記第1領域に対応する部分に表面処理を行なう工程と、を含む、表面被覆切削工具の製造方法。 - 前記表面処理は、ブラシ処理またはブラスト処理を少なくとも含む、請求項4に記載の表面被覆切削工具の製造方法。
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PCT/JP2015/078837 WO2017061059A1 (ja) | 2015-10-09 | 2015-10-09 | 表面被覆切削工具およびその製造方法 |
US15/102,992 US9849517B2 (en) | 2015-10-09 | 2015-10-09 | Surface-coated cutting tool and method of manufacturing the same |
JP2015563003A JP5904389B1 (ja) | 2015-10-09 | 2015-10-09 | 表面被覆切削工具およびその製造方法 |
CN201580004935.XA CN106856659B (zh) | 2015-10-09 | 2015-10-09 | 表面被覆切削工具及其制造方法 |
KR1020167017317A KR102126105B1 (ko) | 2015-10-09 | 2015-10-09 | 표면 피복 절삭 공구 및 그 제조 방법 |
EP15882289.0A EP3326741B1 (en) | 2015-10-09 | 2015-10-09 | Surface-coated cutting tool and method for producing same |
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PCT/JP2015/078837 WO2017061059A1 (ja) | 2015-10-09 | 2015-10-09 | 表面被覆切削工具およびその製造方法 |
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US (1) | US9849517B2 (ja) |
EP (1) | EP3326741B1 (ja) |
JP (1) | JP5904389B1 (ja) |
KR (1) | KR102126105B1 (ja) |
CN (1) | CN106856659B (ja) |
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WO2020170572A1 (ja) | 2019-02-19 | 2020-08-27 | 住友電工ハードメタル株式会社 | 切削工具 |
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JP2018030205A (ja) * | 2016-08-25 | 2018-03-01 | 住友電工ハードメタル株式会社 | 切削工具およびその製造方法 |
JP6690102B2 (ja) * | 2016-08-25 | 2020-04-28 | 住友電工ハードメタル株式会社 | 表面被覆切削工具およびその製造方法 |
JP6728551B2 (ja) * | 2016-08-25 | 2020-07-22 | 住友電工ハードメタル株式会社 | 表面被覆切削工具およびその製造方法 |
JP6210346B1 (ja) | 2016-11-02 | 2017-10-11 | 株式会社タンガロイ | 被覆切削工具 |
CN111655410B (zh) * | 2018-03-16 | 2023-01-10 | 住友电工硬质合金株式会社 | 表面被覆切削工具及其制造方法 |
DE112019004438T5 (de) * | 2018-09-05 | 2021-05-20 | Kyocera Corporation | Beschichtetes werkzeug und schneidwerkzeug |
US11167355B2 (en) * | 2018-10-15 | 2021-11-09 | Sumitomo Electric Hardmetal Corp. | Cutting tool |
WO2020079893A1 (ja) * | 2018-10-15 | 2020-04-23 | 住友電工ハードメタル株式会社 | 切削工具 |
CN114472947B (zh) * | 2022-03-22 | 2023-03-14 | 常德职业技术学院 | 一种基于金属陶瓷的耐超高温切削刀具 |
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- 2015-10-09 WO PCT/JP2015/078837 patent/WO2017061059A1/ja active Application Filing
- 2015-10-09 JP JP2015563003A patent/JP5904389B1/ja active Active
- 2015-10-09 KR KR1020167017317A patent/KR102126105B1/ko active IP Right Grant
- 2015-10-09 EP EP15882289.0A patent/EP3326741B1/en active Active
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US10967433B2 (en) | 2019-02-19 | 2021-04-06 | Sumitomo Electric Hardmetal Corp. | Cutting tool |
Also Published As
Publication number | Publication date |
---|---|
CN106856659B (zh) | 2019-04-19 |
US20170259345A1 (en) | 2017-09-14 |
JP5904389B1 (ja) | 2016-04-13 |
JPWO2017061059A1 (ja) | 2017-10-05 |
US9849517B2 (en) | 2017-12-26 |
CN106856659A (zh) | 2017-06-16 |
EP3326741B1 (en) | 2020-06-17 |
KR102126105B1 (ko) | 2020-06-23 |
EP3326741A1 (en) | 2018-05-30 |
EP3326741A4 (en) | 2018-07-18 |
KR20180036908A (ko) | 2018-04-10 |
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