WO2015075829A1 - Outil super dur recouvert de diamant - Google Patents

Outil super dur recouvert de diamant Download PDF

Info

Publication number
WO2015075829A1
WO2015075829A1 PCT/JP2013/081591 JP2013081591W WO2015075829A1 WO 2015075829 A1 WO2015075829 A1 WO 2015075829A1 JP 2013081591 W JP2013081591 W JP 2013081591W WO 2015075829 A1 WO2015075829 A1 WO 2015075829A1
Authority
WO
WIPO (PCT)
Prior art keywords
diamond
cemented carbide
carbide
cobalt
coated
Prior art date
Application number
PCT/JP2013/081591
Other languages
English (en)
Japanese (ja)
Inventor
正俊 櫻井
晃 金田
Original Assignee
オーエスジー株式会社
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
Application filed by オーエスジー株式会社 filed Critical オーエスジー株式会社
Priority to PCT/JP2013/081591 priority Critical patent/WO2015075829A1/fr
Publication of WO2015075829A1 publication Critical patent/WO2015075829A1/fr

Links

Images

Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
    • 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
    • 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
    • B23C—MILLING
    • B23C2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
    • B23C2222/28—Details of hard metal, i.e. cemented carbide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2226/00—Materials of tools or workpieces not comprising a metal
    • B23C2226/31—Diamond
    • 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 diamond coated carbide tool, and more particularly to a diamond coated carbide tool capable of simplifying the manufacturing process while maintaining the adhesion of the diamond film.
  • a diamond-coated cemented carbide tool is known in which wear resistance is improved by coating diamond on the surface of a tool body made of cemented carbide.
  • the above-described conventional technique has a problem in that the number of steps for manufacturing a cemented carbide tool coated with diamond increases because the step of performing an acid treatment on the cemented carbide is necessary.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a diamond-coated carbide tool capable of simplifying the manufacturing process while maintaining the adhesion of the diamond coating.
  • the content of cobalt or nickel contained in the cemented carbide is set to 1.5% by mass or less, cobalt or nickel from the surface layer of the cemented carbide is used. Even when the step of performing the acid treatment for removing the is omitted, it is possible to suppress a decrease in the adhesion of the diamond coating to the cemented carbide. That is, there is an effect that it is possible to maintain the adhesion of the diamond coating while simplifying the manufacturing process of the cemented carbide tool provided with the diamond coating.
  • the content of cobalt or nickel contained in the cemented carbide is set to 0.2% by mass or more, embrittlement of the cemented carbide due to the lack of contained cobalt or nickel can be prevented. As a result, there is an effect that the adhesion of the diamond coating can be secured.
  • the particle size of the raw material powder of tungsten carbide constituting the cemented carbide is 0.2 ⁇ m or more. Therefore, there is an effect that it is possible to prevent embrittlement of the cemented carbide due to the small particle size of the tungsten carbide raw material powder.
  • the particle size of the tungsten carbide raw material powder constituting the cemented carbide is set to 1.0 ⁇ m or less, the cemented carbide generated due to the large particle size of the tungsten carbide raw material powder. The decrease in hardness can be avoided.
  • any one of tantalum, vanadium, chromium, titanium, and molybdenum in the cemented carbide alloy in addition to the effect exhibited by the diamond coated carbide tool according to claim 1 or 2, any one of tantalum, vanadium, chromium, titanium, and molybdenum in the cemented carbide alloy. Since the total carbide content is set to 0.1% by mass or more, the hardness of the cemented carbide decreases due to the coarsening of tungsten carbide by sintering and cooling during the production of the cemented carbide. There is an effect that can be suppressed.
  • the total content of carbides of any one of tantalum, vanadium, chromium, titanium, and molybdenum in the cemented carbide is set to 1.0% by mass or less, it is caused by the large content of these carbides. There is an effect that the cemented carbide can be prevented from becoming brittle.
  • FIG. 1 is a front view of an end mill 100 according to an embodiment of the present invention.
  • the end mill 100 is mainly used for three-dimensional processing such as a mold by a rotational force transmitted from a processing machine (for example, a machining center) via a holder (not shown).
  • a processing machine for example, a machining center
  • the tool main body 10 rotated around the axis O and the blade 20 provided on the tip side (right side in FIG. 1) of the tool main body 10 are mainly provided.
  • the tool body 10 is made of a cemented carbide obtained by sintering tungsten carbide (hereinafter referred to as “WC”), and is formed in a cylindrical shape having an axis O.
  • WC tungsten carbide
  • the cemented carbide constituting the tool body 10 has an average particle diameter of WC raw material powder of 0.5 ⁇ m, a content of cobalt as a binder phase of 0.5 mass%, and a content of chromium of 1.0 mass. % Is set.
  • the blade part 20 is a part for performing cutting while being rotated by the rotational force transmitted from the processing machine via the tool body 10.
  • the blade portion 20 is coated with diamond. Thereby, while being able to raise the hardness of the blade part 20, the improvement of abrasion resistance and welding resistance can be aimed at.
  • the diamond film is graphitized by cobalt contained in the cemented carbide when the diamond film is coated, the diamond film is easily peeled off.
  • a step of impregnating the cemented carbide with an acidic liquid to remove cobalt from the surface layer of the cemented carbide is essential.
  • a cemented carbide used for a tool body of a cemented carbide tool such as an end mill has contained about 5% by mass of cobalt. Therefore, when manufacturing a diamond coated cemented carbide tool, it was necessary to coat diamond on the surface layer portion of the cemented carbide alloy from which the cobalt had been removed after the process of removing cobalt from the surface layer of the cemented carbide alloy. .
  • the amount of cobalt or nickel contained in the surface layer of the cemented carbide (tool body) after the acid treatment is constant. It is difficult to make adjustments to each other, and the adhesion of the diamond coating tends to vary from product to product. Further, if cobalt or nickel is excessively removed by acid treatment, the cemented carbide becomes brittle and cannot be used as a cemented carbide tool.
  • the cemented carbide constituting the tool body 10 has a cobalt content set to 0.5 mass%. Therefore, even if the operation
  • the adhesion of the diamond coating can be maintained while simplifying the manufacturing process of the cemented carbide tool with the diamond coating.
  • the hardness of the cemented carbide is lowered and is likely to be deformed. Since the diamond coating is thin, the tool body 10 is deformed when the end mill 100 is used, and when the diamond coating is deformed, the diamond coating is formed at the boundary between the surface of the tool body 10 and the diamond coating coated on the surface. Shear stress is generated.
  • the average particle diameter of the WC raw material powder is set to 0.5 ⁇ m.
  • the cemented carbide used for the tool body 10 in the present embodiment contains 1.0% by mass of chromium, but carbides other than chromium, for example, carbides such as tantalum, vanadium, titanium, and molybdenum. May be contained.
  • the amount of the above-described carbide contained in the cemented carbide is preferably set to 0.1% by mass or more and 1.0% by mass or less.
  • the carbide content in the cemented carbide is set to 0.1% by mass or more and 1.0% by mass or less, the adhesion of the diamond coating can be maintained and the brittleness of the cemented carbide is reduced. Can be suppressed.
  • FIG. 2 is a table showing test results of the durability test.
  • a cemented carbide used in the tool body 10 of the end mill 100 according to the present embodiment is coated with diamond (hereinafter referred to as “the product of the present invention”) and a WC particle size of 1.
  • the product of the present invention cemented carbide with a cobalt content of 5.0 mass% and a chromium content of 1.0 mass% coated with diamond (hereinafter referred to as “conventional product”)
  • the position where the film thickness of the diamond film was 10 ⁇ m was irradiated with SiC of # 180 as a projection medium at a gauge pressure of 3 bar, and the durability time until the diamond film was peeled off was measured.
  • the durability time until the diamond film was peeled off (hereinafter referred to as "durability time”) was 40 seconds, whereas in the present invention product, the durability time was 610 seconds.
  • the adhesion of the diamond coating was dramatically improved.
  • the durability time until the diamond film was peeled off was measured in the same manner as in the durability test 1. If the measured durability time is 10 times or more (400 seconds or more) of the conventional product, the result column in the table is marked with ⁇ , and the measured durability time is 1.5 times or more and 10 times that of the conventional product. Less than (less than 60 seconds and less than 400 seconds), and ⁇ when the measured durability is 1 to 1.5 times (40 seconds to less than 60 seconds) When the measured durability time is shorter than that of the conventional product (less than 40 seconds), an X mark is assigned respectively.
  • the elongation of the durability time is 1.5 times or more that of the conventional product, and even when the step of removing cobalt from the surface layer of the cemented carbide is omitted. It can be judged that the adhesion of the diamond coating is higher than that of the conventional product. In particular, in the test products 1-6 and 1-7, the elongation of the durability time was 10 times or more that of the conventional product, and the adhesion of the diamond coating was dramatically improved as compared with the conventional product.
  • cobalt or nickel contained in the cemented carbide within the range of 0.2% by mass or more and 1.5% by weight or less, cobalt or nickel is removed from the surface layer of the cemented carbide. Even when the step of removing is omitted, the adhesion of the diamond coating to the cemented carbide can be maintained.
  • a durability test 3 for a plurality of cemented carbides in which the content of cobalt as a binder phase and the content of chromium are equivalent to those of the present invention, and the particle diameters of WC raw material powders are different from each other.
  • the durability time until the diamond film was peeled off was measured by the same method as in the above durability test 1 and durability test 2.
  • the durability time was lower than that in the conventional product. This is because the adhesion of the diamond coating to the cemented carbide decreased due to the large amount of additives used in producing the cemented carbide by reducing the particle size of the WC raw material powder. It is done.
  • the durability time is 1.5 times or more that of the conventional product, and even when the step of removing cobalt from the surface layer of the cemented carbide is omitted. It can be judged that the adhesion of the diamond coating is higher than that of the conventional product.
  • the test product 2-2 and the test product 2-3 had an endurance time increase of more than 10 times that of the conventional product, and the adhesion of the diamond coating was dramatically improved.
  • the adhesion of the diamond coating to the cemented carbide is improved by setting the particle size of the WC raw material powder constituting the cemented carbide within the range of 0.2 ⁇ m or more and 1.0 ⁇ m or less. Can do.
  • the end mill 100 is illustrated as an example of a carbide tool coated with diamond.
  • the present invention is not necessarily limited thereto, and other carbide tools such as a bite, a milling cutter, a drill, a reamer,
  • the present invention may be applied to a tap, a hob, a pinion cutter, a die, a broach, a throw-away chip, and the like.

Landscapes

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

Abstract

Le problème à résoudre dans le cadre de la présente invention consiste à fournir un outil super dur recouvert de diamant qui permet la simplification du procédé de production tout en conservant l'adhérence d'un film de revêtement en diamant. La solution proposée consiste en un outil super dur recouvert de diamant pour lequel la teneur en cobalt dans un carbure cémenté constituant un corps principal d'outil (10) est établie de sorte à se situer dans la plage allant de 0,2 % en masse à 1,5 % en masse (inclus). Par conséquent, l'adhérence d'un film de revêtement en diamant peut être conservée même dans des cas où on saute une étape consistant à enlever le cobalt ou le nickel de la surface du carbure cémenté par immersion du carbure cémenté dans un liquide acide, ladite étape ayant été un prétraitement pour un revêtement de diamant.
PCT/JP2013/081591 2013-11-25 2013-11-25 Outil super dur recouvert de diamant WO2015075829A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/081591 WO2015075829A1 (fr) 2013-11-25 2013-11-25 Outil super dur recouvert de diamant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/081591 WO2015075829A1 (fr) 2013-11-25 2013-11-25 Outil super dur recouvert de diamant

Publications (1)

Publication Number Publication Date
WO2015075829A1 true WO2015075829A1 (fr) 2015-05-28

Family

ID=53179132

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/081591 WO2015075829A1 (fr) 2013-11-25 2013-11-25 Outil super dur recouvert de diamant

Country Status (1)

Country Link
WO (1) WO2015075829A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114227391A (zh) * 2021-12-21 2022-03-25 江西晶耀科技有限公司 一种用于制备金刚石涂层刀具的化学机械研磨预处理工艺

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01228703A (ja) * 1988-03-07 1989-09-12 Mitsubishi Metal Corp ＡｌおよびＡｌ合金切削用ブレーカー付表面被覆切削チップ
JPH10158839A (ja) * 1996-10-03 1998-06-16 Hitachi Tool Eng Co Ltd 被覆超硬合金

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01228703A (ja) * 1988-03-07 1989-09-12 Mitsubishi Metal Corp ＡｌおよびＡｌ合金切削用ブレーカー付表面被覆切削チップ
JPH10158839A (ja) * 1996-10-03 1998-06-16 Hitachi Tool Eng Co Ltd 被覆超硬合金

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114227391A (zh) * 2021-12-21 2022-03-25 江西晶耀科技有限公司 一种用于制备金刚石涂层刀具的化学机械研磨预处理工艺

Similar Documents

Publication Publication Date Title
JP5764181B2 (ja) 硬質皮膜被覆切削工具
JP6606840B2 (ja) 多結晶ダイヤモンド焼結体付き回転切削工具
JP4993528B2 (ja) 切削工具
JP6144766B2 (ja) 切削工具、切削工具の製造方法、および切削工具を用いた切削加工物の製造方法
JP2015229240A (ja) 切削工具の製造方法及び切削工具
WO2016017500A1 (fr) Foret et procédé de fabrication d'un produit de coupe l'utilisant
JP6612864B2 (ja) 切削工具
JP6489505B2 (ja) 刃先強度を向上させたダイヤモンド被覆超硬合金製切削工具
WO2015075829A1 (fr) Outil super dur recouvert de diamant
EP2981385B1 (fr) Foret hélicoïdal pour le perçage de matériaux composites
JP6060027B2 (ja) 切削工具およびその設計方法
AT15012U1 (de) Bohrwerkzeug
CN104708294A (zh) 一种硬质合金刀具加工方法
JPWO2016186217A1 (ja) ホルダ、切削工具及びこれを用いた切削加工物の製造方法
JP6602148B2 (ja) エンドミル
JP2001328016A (ja) ツイスト用ドリル
CN111015140B (zh) 用于制造螺纹刀具的方法和螺纹刀具
WO2012128100A1 (fr) Outil de rasage
JP2022516276A (ja) 内面ヘリカルブローチ工具
JP2016034673A (ja) ダイヤモンド被覆切削工具およびその製造方法
JP2011062808A (ja) 回転切削工具
JP2011020250A (ja) 翼根溝加工用刃先交換式切削工具
JP2006088242A (ja) 穴明け工具
JP6411818B2 (ja) ドリルおよびそれを用いた切削加工物の製造方法
JP5882846B2 (ja) リーマ、切削工具およびそれを用いた切削加工物の製造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13897880

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

NENP Non-entry into the national phase

Ref country code: JP

122 Ep: pct application non-entry in european phase

Ref document number: 13897880

Country of ref document: EP

Kind code of ref document: A1