WO2023228688A1 - 被覆工具および切削工具 - Google Patents

被覆工具および切削工具 Download PDF

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Publication number
WO2023228688A1
WO2023228688A1 PCT/JP2023/017031 JP2023017031W WO2023228688A1 WO 2023228688 A1 WO2023228688 A1 WO 2023228688A1 JP 2023017031 W JP2023017031 W JP 2023017031W WO 2023228688 A1 WO2023228688 A1 WO 2023228688A1
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WIPO (PCT)
Prior art keywords
coated tool
phase
layer
base
tool
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Ceased
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PCT/JP2023/017031
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English (en)
French (fr)
Japanese (ja)
Inventor
尚久 松田
友也 天見
彰浩 勝丸
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Kyocera Corp
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Kyocera Corp
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Filing date
Publication date
Application filed by Kyocera Corp filed Critical Kyocera Corp
Priority to US18/869,281 priority Critical patent/US20260021535A1/en
Priority to JP2024522993A priority patent/JP7791317B2/ja
Priority to CN202380039732.9A priority patent/CN119173352A/zh
Priority to DE112023002414.6T priority patent/DE112023002414T5/de
Publication of WO2023228688A1 publication Critical patent/WO2023228688A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
    • C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/148—Composition of the cutting inserts
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
    • C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
    • C23C16/36—Carbonitrides
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • 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
    • 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
    • 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
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/05—Mixtures of metal powder with non-metallic powder
    • C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor

Definitions

  • the present disclosure relates to coated tools and cutting tools.
  • Cemented carbide containing WC (tungsten carbide) as a hard phase is used for substrates in coated tools, etc., and is used in cutting tools such as end mills.
  • Patent Document 1 Japanese Patent No. 3424263 (Patent Document 1) states that the residual stress of the hard phase in the base material is in the range of -0.5 to 0 GPa, and the residual stress in the coating layer is in the range of -0.2 to 0.2 GPa. It is stated that peeling at the interface between the substrate and the coating layer can be suppressed by the range of .
  • Patent Document 1 states that when a hard metal is coated, the thermal expansion coefficient of the coating layer becomes larger than that of the base material, so tensile stress may remain in the coating layer after coating is completed. It is often described that coating reduces fracture resistance. Further, Patent Document 1 does not include any description of firing conditions such as cooling rate.
  • the non-limiting one-sided coated tool of the present disclosure includes a substrate and a coating layer located on the surface of the substrate.
  • the substrate has a hard phase containing W and C, a solid solution phase containing W, C, and Ti, and a binder phase containing an iron group metal.
  • a non-limiting one-sided cutting tool of the present disclosure includes a holder that extends from a first end toward a second end and has a pocket on the first end side, and the above-mentioned covered tool located in the pocket.
  • FIG. 1 is a perspective view of a non-limiting one-sided coated tool of the present disclosure
  • FIG. 2 is a sectional view near the surface of the coated tool shown in FIG. 1.
  • FIG. 1 is a perspective view of a non-limiting one-sided cutting tool of the present disclosure
  • the non-limiting one-sided coated tool 1 of the present disclosure will be described in detail using the drawings.
  • the coated tool 1 may include any constituent members not shown in the respective figures referred to.
  • the dimensions of the members in each figure do not faithfully represent the dimensions of the actual constituent members or the dimensional ratios of each member. These points also apply to cutting tools described later.
  • the coated tool 1 may include a base body 3 and a coating layer 7 located on the surface 5 of the base body 3, as in a non-limiting example shown in FIGS. 1 and 2.
  • the substrate 3 may have a hard phase, a solid solution phase, and a bonded phase.
  • the hard phase may contain W (tungsten) and C (carbon).
  • the hard phase may contain WC.
  • the hard phase may contain WC as a main component.
  • "Main component” may mean a component having the largest mass % value compared to other components. Specifically, W and C may be the top two components in terms of mass % among the components contained in the hard phase.
  • the solid solution phase may contain W, C, and Ti (titanium).
  • the solid solution phase may contain W, C, and Ti as main components. That is, in the solid solution phase, the total value of the mass % of each of W, C, and Ti may be the largest. Furthermore, among the components contained in the solid solution phase, the top three in terms of mass % may be W, C, and Ti.
  • the binder phase may contain an iron group (iron metal) metal.
  • the iron group metal include Co (cobalt) and Ni (nickel).
  • the bonding phase may contain at least one of Co and Ni.
  • the binder phase may contain an iron group metal as a main component.
  • the binding phase can function as a phase that binds adjacent hard phases.
  • the composition of each of the hard phase, solid solution phase, and binder phase may be measured by, for example, energy dispersive X-ray spectroscopy (EDS).
  • EDS energy dispersive X-ray spectroscopy
  • the measurement may be performed using an EDS attached to an electron microscope.
  • electron microscopes include scanning electron microscopy (SEM) and transmission electron microscopy (TEM).
  • SEM scanning electron microscopy
  • TEM transmission electron microscopy
  • EDS measurement conditions may be set as follows, for example. Acceleration voltage: 20kV Beam diameter: 12 to 15 (adjust device detection count to 20,000 or more)
  • the residual stress of the hard phase in the base body 3 may be taken as a. a may be in the range of ⁇ 2.5 to ⁇ 0.2 GPa. Further, the residual stress of the hard phase on the surface 5 of the base body 3 may be taken as b. b may be in the range of ⁇ 2.0 to 0.0 GPa.
  • the adhesion between the base 3 and the coating layer 7 is likely to improve, and the bond between the base 3 and the coating layer 7 is increased. Easy to suppress peeling. In other words, it is possible to reduce peeling between the two. Therefore, the coated tool 1 has high wear resistance.
  • “Inside the base” may mean the inside of the base 3. Specifically, the inside of the base 3 that is 0.05 to 2 mm away from the surface 5 of the base 3 may be defined as “inside the base”.
  • the residual stress may be compressive stress. If the value of residual stress is negative, the residual stress is compressive stress.
  • the residual stress may be measured, for example, by the sin2 ⁇ method using an X-ray stress measuring device (X-Ray Diffraction: XRD).
  • the measurement conditions may be set as follows, for example. Radiation source: CuK Output: 50kV, 1000 ⁇ A Collimator diameter: 0.5mm ⁇ Measurement method: 2D method
  • a may be in the range of ⁇ 1.3 to ⁇ 0.5 GPa. In this case, peeling between the base body 3 and the coating layer 7 can be more easily suppressed.
  • the composition of the base 3 may contain Nb (niobium).
  • the base body 3 may contain a ⁇ phase. Nb may be contained in the ⁇ phase, the bonded phase, or both.
  • the ⁇ phase may be a composite carbide containing W and at least one of Ti, Nb, Ta (tantalum), and Zr (zirconium). The composition of the ⁇ phase may be measured, for example, by EDS.
  • b may be in the range of -0.6 to -0.2 GPa. In this case, peeling between the base body 3 and the coating layer 7 can be more easily suppressed.
  • the composition of the base body 3 may contain Nb.
  • the base body 3 may contain a ⁇ phase. Nb may be contained in the ⁇ phase, the bonded phase, or both.
  • the ratio of a to b (a/b) may be 1.2 or more.
  • the ratio of a to b may be 2.1 or more. In this case, the adhesion between the base 3 and the coating layer 7 is more likely to be improved. Note that the upper limit of the ratio (a/b) may be 2.5.
  • the composition of the base 3 may contain Nb. Further, the base body 3 may contain a ⁇ phase. Nb may be contained in the ⁇ phase, the bonded phase, or both.
  • the covering layer 7 may be located on the entire surface 5 of the base 3, or may be located only on a portion of the surface 5. That is, the covering layer 7 may be located on at least a portion of the surface 5 of the base body 3.
  • the covering layer 7 may be formed by a chemical vapor deposition (CVD) method.
  • the covering layer 7 may be a CVD film.
  • the covering layer 7 may be a PVD film formed by a physical vapor deposition (PVD) method.
  • the covering layer 7 may have a single layer structure, or may have a structure in which a plurality of layers are laminated.
  • Examples of the composition of the coating layer 7 include TiCN (titanium carbonitride), Al 2 O 3 (alumina), and TiN (titanium nitride).
  • the covering layer 7 may have a first layer 9, a second layer 11, and a third layer 13 from the base 3 side, as in a non-limiting example shown in FIG.
  • the first layer 9 may contain TiCN.
  • the second layer 11 may contain Al 2 O 3 .
  • the third layer 13 may contain at least one of TiN and TiCN.
  • first layer 9 may contain TiCN as a main component.
  • the second layer 11 may contain Al 2 O 3 as a main component.
  • the third layer 13 may contain at least one of TiN and TiCN as a main component. Further, the first layer 9 may be in contact with the base body 3. The second layer 11 may be in contact with the first layer 9. The third layer 13 may be in contact with the second layer 11.
  • the coating layer 7 is not limited to a specific thickness.
  • the thickness of the first layer 9 may be set to about 5 to 20 ⁇ m.
  • the thickness of the second layer 11 may be set to about 2 to 15 ⁇ m.
  • the thickness of the third layer 13 may be set to about 0.1 to 20 ⁇ m.
  • the thickness of the coating layer 7 may be measured by cross-sectional observation using an electron microscope.
  • the thickness of the coating layer 7 may be an average value.
  • the thickness may be measured at ten or more measurement points at intervals of 1 ⁇ m over a width of 10 ⁇ m or more at any position of each layer, and the average value thereof may be calculated.
  • Peeling at the interface between the base 3 and the coating layer 7 may be evaluated by the peeling rate (%).
  • a peeling rate of 0% means that the base 3 and the coating layer 7 are in complete contact with each other, and a peeling rate of 100% means that the base 3 and the coating layer 7 are completely peeled off. Refers to the state.
  • the peel rate may be measured by the Rockwell hardness test.
  • the measurement conditions may be set as follows, for example.
  • the test load may be 60 kg.
  • Peeling may be determined when the base 3 is exposed around the indentation after the Rockwell hardness test.
  • the peeling rate (%) may be calculated from the formula: (number of peels/number of measurements) x 100.
  • the number of measurements may be 10 or more.
  • the peeling rate may be 25% or less. In this case, the adhesion between the base 3 and the coating layer 7 is high.
  • the peeling rate may be 10% or less.
  • the peeling rate may be 5% or less. Note that the lower limit of the peeling rate may be 0%. That is, the peeling rate may be 0%.
  • a cutting insert is shown as a non-limiting example of the coated tool 1. Note that the covered tool 1 is not limited to a cutting insert.
  • the coated tool 1 has a first surface 15 (upper surface), a second surface 17 (side surface) adjacent to the first surface 15, and a cut located on at least a part of the ridgeline portion of the first surface 15 and the second surface 17. It may have a blade 19.
  • the first surface 15 may be a rake surface.
  • the entire first surface 15 may be a rake surface, or a portion thereof may be a rake surface.
  • a region of the first surface 15 along the cutting edge 19 may be a rake surface.
  • the second surface 17 may be a flank surface.
  • the entire second surface 17 may be a flank surface, or a portion thereof may be a flank surface.
  • a region of the second surface 17 along the cutting edge 19 may be a flank surface.
  • the cutting edge 19 may be located on a part of the ridgeline, or may be located on the entire ridgeline.
  • the cutting blade 19 can be used to cut a workpiece.
  • the covered tool 1 may have a through hole 21.
  • the through hole 21 can be used to attach a fixing screw or a clamp member when the coated tool 1 is held in a holder.
  • the through hole 21 may be formed from the first surface 15 to the surface (lower surface) located on the opposite side of the first surface 15, or may be open in these surfaces. Note that there is no problem even if the through holes 21 are configured to open in mutually opposing regions on the second surface 17.
  • the coated tool 1 may have a square plate shape. Note that the shape of the covered tool 1 is not limited to the square plate shape.
  • the first surface 15 may be triangular, pentagonal, hexagonal, or circular.
  • the coated tool 1 is not limited to a specific size.
  • the length of one side of the first surface 15 may be set to about 3 to 20 mm.
  • the height from the first surface 15 to the surface (lower surface) located on the opposite side of the first surface 15 may be set to about 5 to 20 mm.
  • the base body 3 When manufacturing the coated tool 1, the base body 3 may be manufactured first. First, WC powder, Co powder, TiC powder, etc. may be prepared as raw material powders. The proportion of Co powder may be 4-12% by weight. The proportion of TiC powder may be from 0.5 to 15% by weight. The remainder may be WC powder.
  • TaC powder, ZrC powder, NbC powder, etc. may be further prepared.
  • the proportion of TaC powder may be 0.1 to 5% by weight.
  • the proportion of ZrC powder may be 0.1 to 3% by weight.
  • the proportion of NbC powder may be 0.1 to 3% by weight.
  • the average particle size of the raw material powder may be appropriately selected within the range of 0.1 to 10 ⁇ m.
  • the average particle diameter of the raw material powder may be a value measured by the microtrack method.
  • a molded body may be obtained by mixing and molding the prepared raw material powders.
  • Examples of the molding method include press molding, casting molding, extrusion molding, and cold isostatic pressing.
  • the obtained molded body may be subjected to binder removal treatment and then fired. Firing may be performed in a non-oxidizing atmosphere such as vacuum, argon atmosphere and nitrogen atmosphere.
  • the firing temperature may be 1450 to 1600°C.
  • the firing time may be 0.5 to 3 hours.
  • the base body 3 may be obtained by cooling after firing.
  • the cooling rate may be set to 6 to 20°C/min (°C/min). More specifically, the cooling rate may be set at 6 to 15° C./min.
  • a tends to be in the range of -2.5 to -0.2 GPa
  • b tends to be in the range of -2.0 to 0.0 GPa.
  • NbC powder as the raw material powder and cooling at the above cooling rate
  • a tends to be in the range of -1.3 to -0.5 GPa
  • b is likely to be in the range of -0.6 to -0. .2 GPa
  • the ratio (a/b) tends to be 2.1 or more.
  • a coating layer 7 may be formed on the surface 5 of the obtained base body 3 by a CVD method to obtain a coated tool 1.
  • the covering layer 7, for example, the first layer 9, the second layer 11, and the third layer 13 may be formed from the base 3 side.
  • the first layer 9 containing TiCN may be formed as follows. First, as for the reaction gas composition, titanium tetrachloride (TiCl 4 ) gas is 0.1 to 10 volume %, nitrogen (N 2 ) gas is 10 to 60 volume %, and methane (CH 4 ) gas is 0.1 to 15 volume %. %, and the remainder hydrogen (H 2 ) gas. Then, the first layer 9 may be formed by introducing this mixed gas into the chamber and setting the temperature to 800 to 1100° C. and the pressure to 5 to 30 kPa. Note that this film forming condition can also be applied to the third layer 13 containing TiCN.
  • the second layer 11 containing Al 2 O 3 may be formed as follows. First, as the reaction gas composition, aluminum trichloride (AlCl 3 ) gas is 0.5 to 5 volume %, hydrogen chloride (HCl) gas is 0.5 to 3.5 volume %, and carbon dioxide (CO 2 ) gas is 0. A mixed gas consisting of hydrogen sulfide (H 2 S) gas of 0.5 to 5% by volume, 0.5% or less of hydrogen sulfide (H 2 S) gas, and the remainder hydrogen (H 2 ) gas may be prepared. Then, the second layer 11 may be formed by introducing this mixed gas into the chamber and setting the temperature to 930 to 1010° C. and the pressure to 5 to 10 kPa.
  • AlCl 3 aluminum trichloride
  • HCl hydrogen chloride
  • CO 2 carbon dioxide
  • the third layer 13 containing TiN may be formed as follows. First, as a reaction gas composition, a mixed gas consisting of 0.1 to 10% by volume of titanium tetrachloride (TiCl 4 ) gas, 10 to 60% by volume of nitrogen (N 2 ) gas, and the remainder hydrogen (H 2 ) gas is used. May be adjusted. Then, the third layer 13 containing TiN may be formed by introducing this mixed gas into the chamber and setting the temperature to 800 to 1010° C. and the pressure to 10 to 85 kPa.
  • TiCl 4 titanium tetrachloride
  • N 2 nitrogen
  • H 2 remainder hydrogen
  • the above manufacturing method is an example of a method for manufacturing the coated tool 1. Therefore, it goes without saying that the coated tool 1 is not limited to that produced by the above manufacturing method.
  • FIG. 3 a non-limiting one-sided cutting tool 101 of the present disclosure will be described using FIG. 3, taking as an example a case where the above-mentioned coated tool 1 is provided.
  • the cutting tool 101 extends from a first end 103a toward a second end 103b, and is located in the holder 103 having a pocket 105 on the side of the first end 103a, as in the non-limiting example shown in FIG.
  • the coated tool 1 may also be provided.
  • the cutting tool 101 includes the coated tool 1, stable cutting is possible because the coated tool 1 has high wear resistance.
  • the pocket 105 may be a portion where the covered tool 1 is attached.
  • the pocket 105 may be open on the outer peripheral surface of the holder 103 and the end surface on the first end 103a side.
  • the coated tool 1 may be installed in the pocket 105 so that the cutting edge 19 projects outward from the holder 103. Further, the covered tool 1 may be attached to the pocket 105 using the fixing screw 107. That is, by inserting the fixing screw 107 into the through hole 21 of the covered tool 1, and inserting the tip of the fixing screw 107 into a screw hole formed in the pocket 105 to screw the threaded parts together, the covered tool 1 is It may be attached to the pocket 105. At this time, the lower surface of the covered tool 1 may be in direct contact with the pocket 105, or a sheet may be sandwiched between the covered tool 1 and the pocket 105.
  • Examples of the material of the holder 103 include steel and cast iron. When the material of the holder 103 is steel, the holder 103 has high toughness.
  • a cutting tool 101 used for so-called turning is illustrated.
  • Examples of the turning process include inner diameter machining, outer diameter machining, and grooving.
  • the use of the cutting tool 101 is not limited to turning. For example, there is no problem even if the cutting tool 101 is used for milling.
  • the present disclosure is not limited to the above-described embodiments, and may be made into any one without departing from the gist of the present disclosure. Needless to say.
  • the coated tool 1 is used as the cutting tool 101 has been described as an example, but the coated tool 1 can also be applied to other uses.
  • Other uses include, for example, wear-resistant parts such as sliding parts and molds, tools such as excavation tools and blades, and impact-resistant parts.
  • a coated tool is a coated tool that includes a base body and a coating layer located on the surface of the base body, and the base body includes a hard phase containing W and C, and a hard phase containing W, C, and Ti. and a binder phase containing an iron group metal, where the residual stress of the hard phase in the base is a, and a is in the range of -2.5 to -0.2 GPa.
  • the residual stress of the hard phase on the surface of the substrate is b, and b is in the range of -2.0 to 0.0 GPa.
  • a may be in a range of -1.3 to -0.5 GPa.
  • b In the coated tool of (1) or (2) above, b may be in the range of -0.6 to -0.2 GPa. (4) In the coated tool according to any one of (1) to (3) above, the ratio of the a to the b (a/b) may be 1.2 or more. (5) In the coated tool according to any one of (1) to (4) above, the ratio of the a to the b (a/b) may be 2.1 or more. (6) In the coated tool according to any one of (1) to (5) above, the composition of the base may contain Nb. (7) In the coated tool of (6) above, the base body may contain a ⁇ phase, and the Nb may be contained in the ⁇ phase, the bonding phase, or both.
  • the coating layer includes, from the base side, a first layer containing TiCN and a second layer containing Al 2 O 3 . , a third layer containing at least one of TiN and TiCN.
  • the cutting tool includes a holder extending from a first end toward a second end and having a pocket on the first end side, and a holder according to any one of (1) to (8) above, located in the pocket.
  • a coated tool can be provided.
  • a base was produced. Specifically, WC powder with an average particle size of 9 ⁇ m, TiC powder with an average particle size of 1.5 ⁇ m, TaC powder with an average particle size of 0.9 ⁇ m, ZrC powder with an average particle size of 1.5 ⁇ m, and powder with an average particle size of 1.5 ⁇ m. Co powder and NbC powder with an average particle size of 1.1 ⁇ m were prepared as raw material powders. The average particle size of the raw material powder is a value measured by the microtrack method.
  • the raw material powders were mixed in the proportions of composition A, composition B, or composition C shown in Table 1, and press-molded into the shape of a cutting tool (CNMG120408) to obtain a compact.
  • a cutting tool CNMG120408
  • the obtained molded body was subjected to a binder removal treatment, it was held at a temperature of 1550° C. for 1 hour and fired. After firing, it was cooled to obtain a substrate. At this time, the cooling rate was set to the conditions shown in Table 2.
  • the respective compositions of the hard phase, solid solution phase, and binder phase in the substrate were measured by EDS.
  • the EDS measurement conditions are as follows. Acceleration voltage: 20kV Beam diameter: 12 to 15 (adjust device detection count to 20,000 or more)
  • the obtained substrates contained a hard phase containing W and C as main components, a solid solution phase containing W, C, and Ti as main components, and an iron group metal as main components. (Co).
  • the composition of the substrate contained Nb and the substrate contained ⁇ phase.
  • the ⁇ phase was (W, Ti, Nb, Ta, Zr)C. Further, Nb was contained in the ⁇ phase and the bonded phase.
  • the coating layer consists of, from the base side, a first layer with a thickness of 9 ⁇ m containing TiCN as a main component, a second layer with a thickness of 7 ⁇ m containing Al 2 O 3 as a main component, and a second layer with a thickness of 16 ⁇ m containing TiN as a main component.
  • a third layer was formed. Note that the thickness of each layer is an average value.
  • Sample No. 1 to 4 and 7 to 9 are sample Nos. Compared to Samples Nos. 5 to 6 and No. 10, the adhesion (adhesion strength) between the substrate and the coating layer was high. Note that among the samples with inferior peeling rate, sample No. Sample No. 5-6. 10 was still a better result.
  • the evaluation results are shown in Table 3.
  • the "number of impacts until the cutting edge breaks" in the evaluation results in Table 3 represents the number of impacts until the cutting edge breaks during cutting, and can also be called intermittent performance evaluation. .
  • Sample No. 1 to 3 are sample No. Compared to Nos. 5 and 6, the wear resistance of the cutting edge was high, and stable cutting was possible as a cutting tool.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
PCT/JP2023/017031 2022-05-27 2023-05-01 被覆工具および切削工具 Ceased WO2023228688A1 (ja)

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US18/869,281 US20260021535A1 (en) 2022-05-27 2023-05-01 Coated tool and cutting tool
JP2024522993A JP7791317B2 (ja) 2022-05-27 2023-05-01 被覆工具および切削工具
CN202380039732.9A CN119173352A (zh) 2022-05-27 2023-05-01 涂层刀具以及切削刀具
DE112023002414.6T DE112023002414T5 (de) 2022-05-27 2023-05-01 Beschichtetes werkzeug und schneidwerkzeug

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06173014A (ja) * 1992-12-01 1994-06-21 Toshiba Tungaloy Co Ltd 高強度被覆焼結合金
JP3424263B2 (ja) * 1993-05-27 2003-07-07 住友電気工業株式会社 被覆硬質合金部材
JP2008132570A (ja) * 2006-11-29 2008-06-12 Kyocera Corp 切削工具
JP2014172157A (ja) * 2013-03-12 2014-09-22 Mitsubishi Materials Corp 表面被覆切削工具
WO2019138599A1 (ja) * 2018-01-09 2019-07-18 住友電工ハードメタル株式会社 超硬合金及び切削工具
WO2019181793A1 (ja) * 2018-03-20 2019-09-26 京セラ株式会社 インサート及びこれを備えた切削工具
WO2021241021A1 (ja) * 2020-05-26 2021-12-02 住友電気工業株式会社 切削工具

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7554652B2 (ja) 2020-11-30 2024-09-20 東リ株式会社 耐摩耗性床材及びその製造方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06173014A (ja) * 1992-12-01 1994-06-21 Toshiba Tungaloy Co Ltd 高強度被覆焼結合金
JP3424263B2 (ja) * 1993-05-27 2003-07-07 住友電気工業株式会社 被覆硬質合金部材
JP2008132570A (ja) * 2006-11-29 2008-06-12 Kyocera Corp 切削工具
JP2014172157A (ja) * 2013-03-12 2014-09-22 Mitsubishi Materials Corp 表面被覆切削工具
WO2019138599A1 (ja) * 2018-01-09 2019-07-18 住友電工ハードメタル株式会社 超硬合金及び切削工具
WO2019181793A1 (ja) * 2018-03-20 2019-09-26 京セラ株式会社 インサート及びこれを備えた切削工具
WO2021241021A1 (ja) * 2020-05-26 2021-12-02 住友電気工業株式会社 切削工具

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DE112023002414T5 (de) 2025-03-13
US20260021535A1 (en) 2026-01-22

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