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WO2016190332A1 - Outil de coupe à surface revêtue doté d'une couche de revêtement rigide présentant une excellente résistance à l'écaillage - Google Patents

Outil de coupe à surface revêtue doté d'une couche de revêtement rigide présentant une excellente résistance à l'écaillage Download PDF

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Publication number
WO2016190332A1
WO2016190332A1 PCT/JP2016/065396 JP2016065396W WO2016190332A1 WO 2016190332 A1 WO2016190332 A1 WO 2016190332A1 JP 2016065396 W JP2016065396 W JP 2016065396W WO 2016190332 A1 WO2016190332 A1 WO 2016190332A1
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WO
WIPO (PCT)
Prior art keywords
layer
composite
crystal grains
average
nitride
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/065396
Other languages
English (en)
Japanese (ja)
Inventor
光亮 柳澤
翔 龍岡
佐藤　賢一
健志 山口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Materials Corp
Original Assignee
Mitsubishi Materials Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2016101460A external-priority patent/JP6709536B2/ja
Application filed by Mitsubishi Materials Corp filed Critical Mitsubishi Materials Corp
Priority to EP16800036.2A priority Critical patent/EP3305446A4/fr
Priority to KR1020177035979A priority patent/KR20180011148A/ko
Priority to US15/576,056 priority patent/US20180154463A1/en
Priority to CN201680029622.4A priority patent/CN107614167A/zh
Publication of WO2016190332A1 publication Critical patent/WO2016190332A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/16—Milling-cutters characterised by physical features other than shape
    • 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

Definitions

  • a technique for increasing the Al content ratio x to about 0.9 by forming a hard coating layer by a chemical vapor deposition method has also been proposed.
  • a TiCN layer and an Al 2 O 3 layer are used as inner layers, and a cubic structure or a hexagonal structure (Ti 1-x Al x ) including a cubic structure is formed thereon by chemical vapor deposition.
  • Covering N layer (where x is 0.65 to 0.90 in atomic ratio) as an outer layer and applying compressive stress of 100 to 1100 MPa to the outer layer improves heat resistance and fatigue strength of the coated tool It has been proposed to do.
  • the inventors of the present invention have made extensive studies by paying attention to the concentration change in the crystal grains of the (Ti 1-x Al x ) (C y N 1-y ) layer constituting the hard coating layer.
  • a periodic concentration change of Ti and Al is formed in the crystal grains having the cubic crystal structure of the 1-x Al x ) (C y N 1-y ) layer, a high load acts on the cutting edge.
  • a buffering action against a shearing force is generated, which suppresses the progress of cracks and improves the toughness of the (Ti, Al) (C, N) layer.
  • the direction of the periodic concentration change is a direction within 30 degrees with respect to the plane parallel to the tool substrate surface
  • the concentration change period The direction in which the density change period is minimized, and the direction in which the angle between the direction in which the density change period is minimum and the plane parallel to the surface of the tool substrate is within 30 degrees is referred to as It is abbreviated as “direction of concentration change of the invention”).
  • the average content ratio X avg and the average content ratio Y avg in the total amount of C and N in C are respectively 0.40 ⁇ X avg ⁇ 0.95, It is preferable that 0 ⁇ Y avg ⁇ 0.005 is satisfied, the period of the concentration change is 1 to 10 nm, and the average and minimum values of the maximal value of the Al content ratio x that varies periodically
  • the average difference is preferably 0.01 to 0.1.
  • a hexagonal crystal structure is formed at the grain boundary portion of the crystal nitride having a NaCl-type face-centered cubic structure of the composite nitride or composite carbonitride layer.
  • the lower the film formation temperature of the composite nitride or composite carbonitride layer the lower the proportion of pores in the initial film formation layer, the higher the hardness, or the composite Adhesive strength between the nitride or composite carbonitride layer and the lower layer is increased, and the peel resistance is improved.
  • the higher the film formation temperature of the composite nitride or composite carbonitride layer the higher the crystallinity and the effect of improving the wear resistance. Peeling resistance and wear resistance are improved by performing the process in two stages and making the first stage film formation at a lower temperature than the second stage film formation.
  • the lower layer and the upper layer shown in Table 6 were formed under the formation conditions shown in Table 3, respectively.
  • the coated tools 1 to 4 of the present invention are formed on the surfaces of the tool bases A to D with the target layer thickness ( ⁇ m) shown in Table 8 under the conditions of the comparative film forming process shown in Tables 4 and 5.
  • comparative coating tools 1 to 10 were produced by vapor-depositing a hard coating layer including at least a composite nitride or composite carbonitride layer of Ti and Al. At this time, by forming a hard coating layer so that the reaction gas composition on the surface of the tool base does not change with time during the film forming process of the (Ti 1-x Al x ) (C y N 1-y ) layer.
  • Comparative coated tools 1-10 were produced. Similar to the coated tools 1 to 10 of the present invention, the comparative coated tools 1 to 10 were formed with the lower layer and the upper layer shown in Table 6 under the formation conditions shown in Table 3.
  • WC powder, TiC powder, ZrC powder, TaC powder, NbC powder, Cr 3 C 2 powder, TiN powder and Co powder each having an average particle diameter of 1 to 3 ⁇ m are prepared.
  • Compounded in the formulation shown in Table 10 added with wax, ball mill mixed in acetone for 24 hours, dried under reduced pressure, press-molded into a green compact of a predetermined shape at a pressure of 98 MPa.
  • vacuum sintering is performed at a predetermined temperature within a range of 1370 to 1470 ° C. for 1 hour, and after sintering, the cutting edge is subjected to a honing process of R: 0.07 mm.
  • Tool bases E to G made of WC-base cemented carbide having an insert shape of CNMG120212 were produced.
  • cBN powder, TiN powder, TiC powder, Al powder, and Al 2 O 3 powder each having an average particle diameter in the range of 0.5 to 4 ⁇ m were prepared. These raw material powders are shown in Table 16. After blending into the blended composition, wet mixing with a ball mill for 80 hours, drying, and press-molding into a green compact with a diameter of 50 mm ⁇ thickness: 1.5 mm at a pressure of 120 MPa, and then this green compact Is sintered in a vacuum atmosphere at a pressure of 1 Pa at a predetermined temperature in the range of 900 to 1300 ° C. for 60 minutes to obtain a presintered body for a cutting edge piece, and this presintered body is separately prepared.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Vapour Deposition (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

L'invention concerne un outil revêtu comprenant une couche de revêtement rigide qui, lorsqu'il est utilisé dans la coupe intermittente à grande vitesse, présente une excellente résistance à l'écaillage et une résistance à la rupture qui présente une excellente résistance à l'usure sur une longue période. La couche de revêtement rigide comprend une couche de nitrure composite ou de carbonitrure composite représenté par la formule empirique (Ti1-xAlx)(CyN1-y). La couche de revêtement rigide comprend des grains cristallins de nitrure composite ou de carbonitrure composite qui présentent une structure cubique à face centrée de type NaCl et dans laquelle il y a des changements de concentration périodique, les directions des changements de concentration périodique comprennent au moins une direction qui forme un angle inférieur ou égal à 30° avec un plan parallèle à la surface de la base de l'outil. De préférence, la couche de revêtement rigide présente une structure en forme de colonne, la proportion surfacique des régions où il y a des changements de concentration en Ti/Al périodiques est supérieur ou égal 40 % en superficie, les périodes de changement de concentration sont de 1 à 10 nm, la différence entre la moyenne des valeurs x maximales de la teneur en Al qui change périodiquement et la moyenne des valeurs minimales de celles-ci est de 0,01 à 0,1, et au niveau de frontières de grains cristallins, il y a des grains cristallins fins d'une structure hexagonale présentant un diamètre de grain moyen de 0,01 à 0,3 µm, dans une quantité inférieure ou égale à 5 % en superficie.
PCT/JP2016/065396 2015-05-26 2016-05-25 Outil de coupe à surface revêtue doté d'une couche de revêtement rigide présentant une excellente résistance à l'écaillage Ceased WO2016190332A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP16800036.2A EP3305446A4 (fr) 2015-05-26 2016-05-25 Outil de coupe à surface revêtue doté d'une couche de revêtement rigide présentant une excellente résistance à l'écaillage
KR1020177035979A KR20180011148A (ko) 2015-05-26 2016-05-25 경질 피복층이 우수한 내치핑성을 발휘하는 표면 피복 절삭 공구
US15/576,056 US20180154463A1 (en) 2015-05-26 2016-05-25 Surface-coated cutting tool in which hard coating layer exhibits excellent chipping resistance
CN201680029622.4A CN107614167A (zh) 2015-05-26 2016-05-25 硬质包覆层发挥优异的耐崩刀性的表面包覆切削工具

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2015106851 2015-05-26
JP2015-106851 2015-05-26
JP2016-101460 2016-05-20
JP2016101460A JP6709536B2 (ja) 2015-05-26 2016-05-20 硬質被覆層がすぐれた耐チッピング性を発揮する表面被覆切削工具

Publications (1)

Publication Number Publication Date
WO2016190332A1 true WO2016190332A1 (fr) 2016-12-01

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Application Number Title Priority Date Filing Date
PCT/JP2016/065396 Ceased WO2016190332A1 (fr) 2015-05-26 2016-05-25 Outil de coupe à surface revêtue doté d'une couche de revêtement rigide présentant une excellente résistance à l'écaillage

Country Status (1)

Country Link
WO (1) WO2016190332A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111482622A (zh) * 2020-05-22 2020-08-04 株洲钻石切削刀具股份有限公司 一种涂层切削刀具及其制备方法
US11007578B2 (en) * 2016-09-16 2021-05-18 Mitsubishi Materials Corporation Surface-coated cutting tool

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1161380A (ja) * 1997-08-20 1999-03-05 Kobe Steel Ltd 耐磨耗性多層型硬質皮膜
JP2003211304A (ja) * 2002-01-21 2003-07-29 Mitsubishi Materials Kobe Tools Corp 高速切削加工で硬質被覆層がすぐれた耐摩耗性を発揮する表面被覆超硬合金製切削工具
JP2007196365A (ja) * 2005-12-08 2007-08-09 Sandvik Intellectual Property Ab 鋼のフライス加工用インサート
JP2014210333A (ja) * 2013-04-01 2014-11-13 三菱マテリアル株式会社 硬質被覆層がすぐれた耐チッピング性を発揮する表面被覆切削工具
JP2015193071A (ja) * 2014-03-26 2015-11-05 三菱マテリアル株式会社 表面被覆切削工具及びその製造方法
JP2016064485A (ja) * 2014-09-25 2016-04-28 三菱マテリアル株式会社 硬質被覆層がすぐれた耐チッピング性を発揮する表面被覆切削工具

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1161380A (ja) * 1997-08-20 1999-03-05 Kobe Steel Ltd 耐磨耗性多層型硬質皮膜
JP2003211304A (ja) * 2002-01-21 2003-07-29 Mitsubishi Materials Kobe Tools Corp 高速切削加工で硬質被覆層がすぐれた耐摩耗性を発揮する表面被覆超硬合金製切削工具
JP2007196365A (ja) * 2005-12-08 2007-08-09 Sandvik Intellectual Property Ab 鋼のフライス加工用インサート
JP2014210333A (ja) * 2013-04-01 2014-11-13 三菱マテリアル株式会社 硬質被覆層がすぐれた耐チッピング性を発揮する表面被覆切削工具
JP2015193071A (ja) * 2014-03-26 2015-11-05 三菱マテリアル株式会社 表面被覆切削工具及びその製造方法
JP2016064485A (ja) * 2014-09-25 2016-04-28 三菱マテリアル株式会社 硬質被覆層がすぐれた耐チッピング性を発揮する表面被覆切削工具

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3305446A4 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11007578B2 (en) * 2016-09-16 2021-05-18 Mitsubishi Materials Corporation Surface-coated cutting tool
CN111482622A (zh) * 2020-05-22 2020-08-04 株洲钻石切削刀具股份有限公司 一种涂层切削刀具及其制备方法
CN111482622B (zh) * 2020-05-22 2022-02-18 株洲钻石切削刀具股份有限公司 一种涂层切削刀具及其制备方法

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