CN116867590A - 表面包覆切削工具 - Google Patents
表面包覆切削工具 Download PDFInfo
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- CN116867590A CN116867590A CN202180093249.XA CN202180093249A CN116867590A CN 116867590 A CN116867590 A CN 116867590A CN 202180093249 A CN202180093249 A CN 202180093249A CN 116867590 A CN116867590 A CN 116867590A
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- 238000005520 cutting process Methods 0.000 title claims abstract description 40
- 239000010410 layer Substances 0.000 claims abstract description 112
- 239000011247 coating layer Substances 0.000 claims abstract description 26
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 229910052747 lanthanoid Inorganic materials 0.000 claims abstract description 8
- 150000002602 lanthanoids Chemical class 0.000 claims abstract description 8
- 230000000737 periodic effect Effects 0.000 claims description 6
- 239000000758 substrate Substances 0.000 abstract description 10
- 239000011248 coating agent Substances 0.000 description 11
- 238000000576 coating method Methods 0.000 description 11
- 238000005299 abrasion Methods 0.000 description 10
- 239000013078 crystal Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 5
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- RKHQGWMMUURILY-UHRZLXHJSA-N cortivazol Chemical compound C([C@H]1[C@@H]2C[C@H]([C@]([C@@]2(C)C[C@H](O)[C@@H]1[C@@]1(C)C2)(O)C(=O)COC(C)=O)C)=C(C)C1=CC1=C2C=NN1C1=CC=CC=C1 RKHQGWMMUURILY-UHRZLXHJSA-N 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- -1 Co in addition to WC Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N argon Substances [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 238000004626 scanning electron microscopy Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004627 transmission electron microscopy Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011195 cermet Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010849 ion bombardment Methods 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Classifications
-
- 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
- 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
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
- C23C28/347—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with layers 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/40—Coatings including alternating layers following a pattern, a periodic or defined repetition
- C23C28/42—Coatings including alternating layers following a pattern, a periodic or defined repetition characterized by the composition of the alternating layers
-
- 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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/0641—Nitrides
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
- C23C14/32—Vacuum evaporation by explosion; by evaporation and subsequent ionisation of the vapours, e.g. ion-plating
- C23C14/325—Electric arc evaporation
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/3407—Cathode assembly for sputtering apparatus, e.g. Target
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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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/40—Coatings including alternating layers following a pattern, a periodic or defined repetition
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/40—Coatings including alternating layers following a pattern, a periodic or defined repetition
- C23C28/44—Coatings including alternating layers following a pattern, a periodic or defined repetition characterized by a measurable physical property of the alternating layer or system, e.g. thickness, density, hardness
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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
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- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Physical Vapour Deposition (AREA)
Abstract
表面包覆切削工具具有基体和包覆层,包覆层具有0.2~10.0μm的平均厚度,包括至少一个以上的第一层和至少一个以上的第二层分别交替地层叠的结构。至少一个第一层分别具有0.5~100.0nm的平均厚度,具有由式:(AlxTi1‑x‑y‑ zMy)BzN(M为4~6族及镧系中的一种以上的元素,x为0.100~0.640,y为0.001~0.100,z为0.060~0.400)表示的平均组成。至少一个第二层分别具有0.5~100.0nm的平均厚度,具有由式:(AlpCr1‑p‑q‑rM'q)BrN(M'为4~6族及镧系中的一种以上的元素,p为0.650~0.900,q为0.000~0.100,r为0.000~0.050)表示的平均组成。
Description
技术领域
本发明涉及表面包覆切削工具(以下,有时称为包覆工具)。本申请基于2021年2月19日申请的日本专利申请特愿2021-24876号要求优先权。该日本专利申请中记载的所有记载内容通过参照被引用到本说明书中。
背景技术
一般而言,包覆工具具有在各种钢或铸铁等工件的车削加工或刨削加工中装卸自如地安装在车刀的前端部而使用的刀片、在工件的开孔切削加工等中使用的钻头或微型钻头以及在工件的平面切削加工、槽加工或台阶面加工等中使用的整体式立铣刀等,另外,已知有装卸自如地安装刀片并与整体式立铣刀同样进行切削加工的刀片式立铣刀等。
一直以来,作为包覆工具,已知有例如在工具基体上形成WC基硬质合金等包覆层的工具,着眼于工具基体和包覆层的组成、组织,以改善切削性能为目的提出了各种方案。
例如,在专利文献1中记载了如下包覆工具,该包覆工具在工具基体的表面包覆有0.8~5.0μm的包覆层,所述包覆层是由Ti、Al和B的复合氮化物的粒状晶组织构成的薄层A与由柱状晶组织构成的薄层B的交替层叠结构,所述薄层A和薄层B分别具有0.05~2.0μm的层厚,所述粒状晶组织的平均结晶粒径为30nm以下,所述柱状晶组织的平均结晶粒径为50~500nm,该包覆工具在高硬度钢的高速高进给切削加工中也具有优异的耐磨损性。
专利文献1:日本专利公开2011-224717号公报
发明内容
本发明是鉴于上述情况及上述方案而完成的,其目的是提供一种即使例如提供于奥氏体不锈钢等不锈钢的切削速度比通常的条件高30%以上的高速切削,也能够发挥优异的耐磨损性、耐缺损性的包覆工具。
本发明的实施方式所涉及的表面包覆切削工具包括工具基体和包覆层,
所述包覆层具有0.2~10.0μm的平均厚度,包括至少一个以上的第一层和至少一个以上的第二层分别交替地层叠的结构,
所述至少一个第一层分别具有0.5~100.0nm的平均厚度,具有由式:(AlxTi1-x-y- zMy)BzN(其中,M为元素周期表中4族、5族、6族及镧系中的一种或两种以上的元素,x为0.100~0.640,y为0.001~0.100,z为0.060~0.400)表示的平均组成,
所述至少一个第二层分别具有0.5~100.0nm的平均厚度,具有由式:(AlpCr1-p-q- rM'q)BrN(其中,M'为元素周期表中4族、5族、6族及镧系中的一种或两种以上的元素,p为0.650~0.900,q为0.000~0.100,r为0.000~0.050)表示的平均组成。
另外,上述实施方式所涉及的表面包覆切削工具也可以满足以下事项。
(1)所述至少一个第一层和所述至少一个第二层的合计层数在30~800的范围内。
如上所述,即使提供于奥氏体不锈钢等不锈钢的高速切削,也能够发挥优异的耐磨损性、耐缺损性。
附图说明
图1是本发明的实施方式所涉及的表面包覆切削工具中的包覆层的纵截面的示意图。
具体实施方式
本发明人对即使提供于奥氏体不锈钢等不锈钢的高速切削,也能够发挥优异的耐磨损性的包覆工具进行了深入研究。其结果,含有B的包覆层虽然耐磨损性优异但较脆,因此认为仅包覆含有B的包覆层便不能兼顾耐磨损性和耐缺损性,从而进行了深入研究。其结果发现,具有Al和B的组成变化的层叠结构的包覆层能够抑制因切削产生的裂纹的传播,并且能够兼顾耐磨损性和耐缺损性。
下面,对本发明的实施方式所涉及的包覆工具进行更详细说明。另外,在本说明书及权利要求书的记载中,在使用“A~B”来表示数值范围的情况下,其范围包括上限(B)及下限(A)的数值。另外,在仅对上限(B)记载单位时,上限(B)及下限(A)的单位相同。
本发明的实施方式所涉及的包覆工具的包覆层的层叠结构如图1所示。
1、包覆层
下面,对包覆层进行详细描述。
(1)平均厚度
本实施方式所涉及的包覆工具中的包覆层由于以下理由而具有0.2~10.0μm的范围的平均厚度。在平均厚度小于0.2μm时,在长期使用中不能发挥优异的耐磨损性。在平均厚度大于10.0μm时,包覆层的晶粒容易粗大化,不能得到提高耐崩刀性的效果。平均厚度更优选为0.8~8.0μm。
在本实施方式中,关于各层的平均厚度,能够通过采用扫描型电子显微镜法(Scanning Electron Microscopy:SEM)、透射型电子显微镜法(Transmission ElectronMicroscopy:TEM)所附带的能量色散型X射线光谱法(Energy Dispersive X-raySpectroscopy:EDS)的截面观察(与工具基体表面垂直的纵截面的观察)来求出。
(2)包覆层的结构
如图1所示,本实施方式所涉及的包覆工具中的包覆层包括在工具基体1的表面分别交替地层叠有至少一个以上的第一层3和至少一个以上的第二层4的结构。各第一层3为(AlTiM)BN层,各第二层4为(AlCrM')BN层。第一层3和第二层4包括NaCl型面心立方结构的晶粒。
(2-1)第一层((AlTiM)BN层)
优选地,各第一层具有0.5~100.0nm的平均厚度,具有由组成式:(AlxTi1-x-y-zMy)BzN(其中,M为元素周期表中4族、5族、6族及镧系中的一种或两种以上的元素,x为0.100~0.640,y为0.001~0.100,z为0.060~0.400)表示的平均组成。
在分别交替地层叠至少一个以上(特别是分别为30以上)的第一层和第二层时,如果第一层的平均厚度小于0.5nm,则不能充分发挥层叠结构所带来的耐裂纹进展性的提高,另一方面,如果大于100.0nm,则不能充分发挥纳米层叠所带来的耐磨损性的提高。
另外,优选上述平均组成的理由如下。
如果x小于0.100,则不能充分地得到Al的耐热性提高,另一方面,如果大于0.640,则硬度会降低,不能发挥充分的耐磨损性。
如果y小于0.001,则不能充分地得到由添加带来的耐热性提高和机械物理性质的提高,另一方面,如果大于0.100,则韧性会降低,容易产生崩刀、缺损。
如果z小于0.060,则不能得到充分的硬度提高,另一方面,如果大于0.040,则韧性会降低,容易产生崩刀、缺损。
(2-2)第二层((AlCrM')BN层)
优选地,各第二层具有0.5~100.0nm的平均厚度,具有由组成式:(AlpCr1-p-q-rM'q)BrN(其中,M'为元素周期表中4族、5族、6族及镧系中的一种或两种以上的元素,p为0.650~0.900,q为0.000~0.100,r为0.000~0.050)表示的平均组成。
在此,各第一层的M元素和各第二层的M'元素可以不同,其一部分可以相同,或者全部可以相同。
在分别交替地层叠至少一个以上(特别是分别为30以上)的第一层和第二层时,如果第二层的平均厚度小于0.5nm,则不能充分发挥作为交替层叠结构的效果的耐裂纹进展性的提高,另一方面,如果大于100.0nm,则不能充分发挥作为纳米层叠的效果的耐磨损性提高效果。
另外,优选上述平均组成的理由如下。
如果p小于0.650,则不能充分地得到Al的耐热性提高效果,另一方面,如果大于0.900,则硬度会降低,不能发挥充分的耐磨损性。
q可以为0.000,即实质上不含有,但在含有时,如果大于0.100,则韧性会降低,容易产生崩刀、缺损,因此不优选。
r可以为0.000,即实质上不含有,但在含有时,如果大于0.050,则韧性会降低,容易产生崩刀、缺损,因此不优选。
(2-3)具有至少一个以上的第一层和至少一个以上的第二层分别交替地层叠的结构
优选地,具有至少一个以上的第一层和至少一个以上的第二层分别交替地层叠的结构(交替层叠结构)。由此,B的含量低的第二层弥补了B的含量高的第一层虽然具有耐磨损性但较脆的性质,即使作为包覆层整体提供于奥氏体不锈钢等不锈钢的高速切削,也发挥优异的耐磨损性、耐缺损性。另外,交替层叠结构也可以是层叠有一个第一层和一个第二层的结构。另外,交替层叠的与工具基体接触的层(存在后述的下部层时与下部层接触的层)可以是第一层和第二层中的任一层。最表面侧的层可以是第一层,也可以是第二层。
只要具有至少一个以上的第一层和至少一个以上的第二层分别交替地层叠的结构,各第一层和各第二层满足前述范围的平均厚度,并且包覆层的平均厚度也满足前述范围的平均厚度,则对第一层和第二层的层叠数(即,第一层和第二层的合计层叠数)没有特别的限制。例如,即使是一个第一层和一个第二层,也能够实现本发明的目的。但是,为了更可靠地实现本发明的目的,层叠数优选为30~800层,更优选为50~750层。
(3)其他层
本发明的目的可以通过包覆层包括至少一个以上的第一层和至少一个以上的第二层交替层叠的结构来实现,但也可以进一步具有覆盖包覆层表面的TiN层和/或工具基体表面上的下部层。由于TiN层具有金黄色的色调,因此TiN层例如可以用作识别层,该识别层能够根据工具表面的色调变化来判别切削工具是未使用还是已使用。
此外,作为该识别层的TiN层的平均厚度例如为0.1~1μm即可。
另外,下部层是设置在工具基体与交替层叠之间的层。
包覆层的平均厚度通过在包覆层整体中对各层测定与工具基体表面的法线方向平行的截面上的任意选择的多个点(例如10个点)并计算该测定的多个厚度的平均值来求出。包覆层的第一层和第二层的平均组成通过计算对各层的厚度方向的中央部任意选择的多个点(例如10个点)的组成的平均值来求出。
2、工具基体
(1)材质
如果本实施方式中使用的工具基体为以往公知的工具基体的材质,则只要不阻碍实现本发明的目的,就可以使用任何材质。如果举出一例,优选为硬质合金(WC基硬质合金、除了WC以外,还包括Co,进一步还包括添加Ti、Ta、Nb等的碳氮化物而成的物质的合金等)、金属陶瓷(以TiC、TiN、TiCN等为主成分的陶瓷等)、陶瓷(以氮化硅、氧化铝等为主成分的陶瓷等)、cBN烧结体或金刚石烧结体中的任一种。
(2)形状
工具基体的形状只要是作为切削工具使用的形状则没有特别的限制,可以例示刀片的形状、钻头的形状。
3、制造方法
关于本发明的包覆工具的包覆层,能够使用具有PVD的一种即电弧方式的蒸镀源的成膜装置(电弧离子镀(Arc Ion Plating:AIP)装置)来制造,第一层使用AlTiMB靶,第二层使用AlCr或AlCrM靶,能够通过电弧放电来形成。
实施例
接着,对实施例进行说明。
在此,作为本发明的包覆工具的实施例,对作为工具基体包括WC基硬质合金的刀片切削工具进行了描述,但是工具基体只要是前述基体即可,另外,钻头、立铣刀等其他包覆工具也包括在本发明的范畴内。
首先,将Co粉末、VC粉末、TiC粉末、TaC粉末、NbC粉末、Cr3C2粉末和WC粉末配合成表1所示的组成,制备了工具基体1~3。在工具基体1~3中分别进一步加入蜡并用球磨机进行湿式混合72小时,在减压干燥之后,以100MPa的压力制作压坯成型体,将这些压坯成型体进行烧结,并加工成规定尺寸,制作了具有型号SEEN 1203AFTN1(三菱综合材料株式会社制)的刀片形状的WC基硬质合金制的工具基体1~3。
接着,将工具基体1~3在丙酮中进行超声波清洗并使之干燥。将各工具基体沿着外周部安装在从AIP装置内的旋转台上的中心轴沿半径方向离开规定距离的位置上。作为阴极(蒸发源)配置AlTiM靶和AlCr或AlCrM靶。
接着,在对成膜装置进行排气并保持10-2Pa以下的真空的同时,用加热器将装置内加热到400℃之后,在1.0Pa的Ar气体气氛中,对在上述旋转台上自转的工具基体施加-1000V的直流偏置电压,通过氩离子对工具基体表面进行60分钟轰击处理。另外,也可以代替本实施例的氩离子,使用金属靶进行金属离子轰击处理。
接着,将表2所示的分压在0.1~9.0Pa的范围内的氮气作为反应气体向成膜装置内导入规定时间,并且同样维持表2所示的炉内温度,对在上述旋转台上自转(行星旋转)的工具基体施加表2所示的-10~-500V的范围内的规定的直流偏置电压,以表2所示的80~240A的范围内的电流产生电弧放电,制作了表3所示的本发明的包覆工具1~9。
另一方面,为了比较,使用与上述相同的成膜装置,在表2所示的条件下对上述工具基体1~3蒸镀形成包覆层,制作了表4所示的比较例的包覆工具1~9。
关于包覆层的平均厚度、各第一层及各第二层的平均厚度和平均组成,通过,使用扫描型电子显微镜(SEM)、透射型电子显微镜(TEM)和能量色散型X射线光谱法(EDS),对与上述制作的实施例1~9及比较例1~9的工具基体的表面垂直的包覆层的纵截面进行截面观察来求出。包覆层的平均厚度通过在包覆层整体中对各层测定与工具基体表面的法线方向平行的截面样品中的任意选择的10个点(对应于层厚适当设定观察倍率),并计算测定出的10个点的厚度的平均值来求出。包覆层的第一层及第二层的平均组成通过对各层的厚度方向的中央部计算10个点的组成的平均值来求出。
此外,进行X射线衍射(XRD),确认了各层具有NaCl型面心立方晶体结构的晶体的情况。
[表1]
[表2]
炉内温度、直流偏置电压及电弧电流值(硬质皮膜形成)在成膜期间为恒定。
[表3]
[表4]
接着,对于实施例1~9及比较例1~9的包覆工具,使用型号SE445R0506E(三菱综合材料株式会社制)的刀具,实施单刃的平面铣削切削加工试验。在以下的切削条件下,对奥氏体类不锈钢实施高速切削加工试验。
切削条件A:
工件:SUS304、宽度60mm×长度200mm的块材
切削速度:200m/min
切削深度:1.3mm
进给量:0.27mm/tooth
切削至切削长度1.8m,测定后刀面磨损宽度,观察刀尖的损耗状态。
将切削试验的结果示于表5中。
切削条件B:
工件:SUS316、宽度60mm×长度200mm的块材
切削速度:180m/min
切削深度:1.5mm
进给量:0.25mm/tooth
切削至切削长度1.8m,测定后刀面磨损宽度,观察刀尖的损耗状态。
将切削试验的结果示于表6中。
[表5]
※表示在达到最大切削长度之前达到使用寿命的切削寿命(sec)。
[表6]
※表示在达到最大切削长度之前达到使用寿命的切削寿命(sec)。
根据表5及表6的结果可知,关于实施例1~9,切削条件A、B中的任一条件均不会产生崩刀、剥离等异常损伤,耐磨损性、耐崩刀性均优异。
与此相对,明显可知,关于比较例1~9,在切削条件A、B中的任一条件中,由于崩刀的产生或后刀面磨损的进展,在短时间内达到寿命。
附图标记说明
1 工具基体
2 包覆层
3 (AlTiM)BN层
4 (AlCrM')BN层
Claims (2)
1.一种表面包覆切削工具,包括工具基体和包覆层,其特征在于,
所述包覆层具有0.2~10.0μm的厚度,包括至少一个以上的第一层和至少一个以上的第二层分别交替地层叠的结构,
所述至少一个第一层分别具有0.5~100.0nm的平均厚度,具有由式:(AlxTi1-x-y-zMy)BzN表示的平均组成,其中,M为元素周期表中4族、5族、6族及镧系中的一种或两种以上的元素,x为0.100~0.640,y为0.001~0.100,z为0.060~0.400,
所述至少一个第二层分别具有0.5~100.0nm的平均厚度,具有由式:(AlpCr1-p-q-rM'q)BrN表示的平均组成,其中,M'为元素周期表中4族、5族、6族及镧系中的一种或两种以上的元素,p为0.650~0.900,q为0.000~0.100,r为0.000~0.050。
2.根据权利要求1所述的表面包覆切削工具,其中,
所述至少一个第一层与所述至少一个第二层的合计层叠数在30~800的范围内。
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