JPH0222454A - Production of cutting tool made of surface-treated tungsten carbide-base sintered hard alloy - Google Patents
Production of cutting tool made of surface-treated tungsten carbide-base sintered hard alloyInfo
- Publication number
- JPH0222454A JPH0222454A JP17018688A JP17018688A JPH0222454A JP H0222454 A JPH0222454 A JP H0222454A JP 17018688 A JP17018688 A JP 17018688A JP 17018688 A JP17018688 A JP 17018688A JP H0222454 A JPH0222454 A JP H0222454A
- Authority
- JP
- Japan
- Prior art keywords
- coating layer
- titanium
- cutting tool
- tungsten carbide
- substrate
- 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.)
- Pending
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 25
- 229910052721 tungsten Inorganic materials 0.000 title claims description 8
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 229910045601 alloy Inorganic materials 0.000 title abstract description 5
- 239000000956 alloy Substances 0.000 title abstract description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title 1
- 239000010937 tungsten Substances 0.000 title 1
- 239000011247 coating layer Substances 0.000 claims abstract description 46
- 238000005468 ion implantation Methods 0.000 claims abstract description 15
- 239000010936 titanium Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 13
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 13
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 8
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 5
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000758 substrate Substances 0.000 claims description 24
- 239000010410 layer Substances 0.000 claims description 11
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 8
- 229910052758 niobium Inorganic materials 0.000 claims description 6
- 229910052715 tantalum Inorganic materials 0.000 claims description 6
- 150000004767 nitrides Chemical class 0.000 claims description 5
- 239000012466 permeate Substances 0.000 claims description 4
- 150000001247 metal acetylides Chemical class 0.000 claims description 3
- FOZHTJJTSSSURD-UHFFFAOYSA-J titanium(4+);dicarbonate Chemical compound [Ti+4].[O-]C([O-])=O.[O-]C([O-])=O FOZHTJJTSSSURD-UHFFFAOYSA-J 0.000 claims description 3
- 239000006104 solid solution Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 5
- 150000002500 ions Chemical class 0.000 abstract description 4
- 239000002356 single layer Substances 0.000 abstract description 3
- LGLRLDQPSSWHKG-UHFFFAOYSA-N [N]=O.[Ti] Chemical compound [N]=O.[Ti] LGLRLDQPSSWHKG-UHFFFAOYSA-N 0.000 abstract 1
- FOQQJHCZDOPOPX-UHFFFAOYSA-N [Ti].[C]=O Chemical compound [Ti].[C]=O FOQQJHCZDOPOPX-UHFFFAOYSA-N 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000011230 binding agent Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- -1 carbonitrides Chemical class 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000010730 cutting oil Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Classifications
-
- 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
- C22C29/067—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 comprising a particular metallic binder
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Physical Vapour Deposition (AREA)
- Chemical Vapour Deposition (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、被覆層の基体表面に対する付着強度が著し
く高く、かつ被覆層自体も一段と高い硬さを有し、すぐ
れた耐摩耗性を示す表面被覆炭化タングステン（以下Ｗ
Ｃで示す）超超硬合金製切削工具の製造法に関するもの
である。[Detailed Description of the Invention] [Industrial Application Field] This invention provides a coating layer that has extremely high adhesion strength to the substrate surface, and that the coating layer itself has even higher hardness and exhibits excellent wear resistance. Surface coated tungsten carbide (hereinafter referred to as W
The present invention relates to a method for manufacturing a cutting tool made of cemented carbide (denoted by C).
従来、例えば特公昭５９−４３２４６号公報に記載され
るように、
鋼や鋳鉄、八ΩやＡ２合金、さらにプリント基板などの
穴明は加工や旋削加工などの切削に、ミニチュアドリル
やドリル、さらにエンドミルやスローアウェイチップな
どとして、
結合相形成成分としてのＣｏ、Ｎｉ、およびＦｅのうち
の１種以上：４〜１５％、
を含有し、さらに必要に応じて、
分散相形成成分としてのＴｉ、Ｔａ、Ｎｂ、およびＷの
炭化物、窒化物、および炭窒化物、並びにこれらの２種
以上の固溶体（ただしＷの窒化物と炭窒化物は除き、以
下、これら全体を（ＴＩ。Conventionally, for example, as described in Japanese Patent Publication No. 59-43246, drilling holes in steel, cast iron, 8Ω, A2 alloys, printed circuit boards, etc. have been performed using miniature drills, drills, etc. For end mills, throw-away tips, etc., it contains 4 to 15% of one or more of Co, Ni, and Fe as binder phase forming components, and further contains Ti as a dispersed phase forming component, if necessary. Carbides, nitrides, and carbonitrides of Ta, Nb, and W, and solid solutions of two or more of these (excluding nitrides and carbonitrides of W, hereinafter referred to as (TI)).
Ｔａ、Ｎｂ、Ｗ）Ｃ−Ｎで示す）のうちの１種以上二０
．５〜３０％、
を含有し、残りが同じく分散相形成成分としてのＷＣと
不可避不純物からなる組成（以上重量％、以下％は重量
％を示す）を有するＷＣＣ超超硬合金基体表面に、物理
蒸着法や化学蒸着法を用いて、周期律表の４ａ、５ａ、
および６ａ族の金属の炭化物、窒化物、炭窒化物、炭酸
化物、および炭窒酸化物、並びに酸化アルミニウムのう
ちの１８の単層または２種以上の複層からなる被覆層を
０．５〜２０μｍの平均層厚で形成してなる表面被覆Ｗ
ＣＣ超超硬合金製切削工具広く実用に供されている。One or more of Ta, Nb, W) C-N)
．． 5 to 30%, and the remainder similarly consists of WC as a dispersed phase forming component and unavoidable impurities (the above weight %, below % shows weight %). Using vapor deposition method or chemical vapor deposition method, 4a, 5a,
and a coating layer consisting of a single layer or a multilayer of two or more of 18 of group 6a metal carbides, nitrides, carbonitrides, carbonates, and carbonitrides, and aluminum oxide. Surface coating W formed with an average layer thickness of 20 μm
Cutting tools made of CC cemented carbide are widely used in practical use.
しかし、近年の切削の高速化および省力化に伴い、高速
切削や、高送りおよび高切込みなどの重切削を余儀無く
されつつあるが、上記の従来表面被覆ＷＣＣ超超硬合金
製切削工具おいては、ＷＣＣ超超硬合金基体表面対する
被覆層の付着強度が十分満足するものでないために、こ
れを高速切削や重切削などの苛酷な条件で用いると被覆
層に剥離が生じ、この剥離が原因で摩耗が著しく促進さ
れるようになることから、短かい使用寿命しか示さない
のが現状である。However, as cutting speeds and labor savings have increased in recent years, heavy-duty cutting such as high-speed cutting, high feed rate, and high depth of cut has become necessary. Because the adhesion strength of the coating layer to the surface of the WCC cemented carbide substrate is not sufficiently satisfactory, when it is used under harsh conditions such as high-speed cutting or heavy cutting, the coating layer peels off, and this peeling is the cause. The current situation is that wear is significantly accelerated, and as a result, the service life is only short.
そこで、本発明者等は、上述のような観点から、上記の
従来表面被覆ＷＣＣ超超硬合金製切削工具着目し、被覆
層の基体表面に対する付着強度を向上せしめるべく研究
を行なった結果、
被覆層を、炭化チタン、窒化チタン、炭窒化チタン、炭
酸化チタン、窒酸化チタン、および炭窒酸化チタン（以
下、それぞれＴｉＣ，ＴｉＮ。Therefore, from the above-mentioned viewpoint, the present inventors focused on the conventional surface-coated WCC cemented carbide cutting tool and conducted research to improve the adhesion strength of the coating layer to the base surface. The layers include titanium carbide, titanium nitride, titanium carbonitride, titanium carbonate, titanium nitride, and titanium carbonitoxide (hereinafter referred to as TiC and TiN, respectively).
Ｔ１ＣＮ、ＴｉＣ０，ＴｉＮ０．およびＴ ｉ ＣＮＯ
で示し、これら全体を、ＴｉＣ−Ｎ−０で示す）のうち
のいずれか１種からなる単層に限定すると共に、その厚
さを平均層厚で０．１〜１．５μｍと相対的に薄くしだ
状態で、これにイオン注入処理を施して、イオン注入成
分を前記被覆層を通して上記基体表面部内まで滲透させ
てやると、前記被覆層の基体表面に対する付着強度が著
しく向上するようになるばかりでなく、前記被覆層自体
もイオン注入成分の存在によって一段と硬さが向上する
ようになり、苛酷な条件下での切削にも被覆層が剥離す
ることがなくなり、すぐれた耐摩耗性を著しく長期に亘
って発揮するという知見を得たのである。T1CN, TiC0, TiN0. and T i CNO.
, and all of these are limited to a single layer consisting of any one of TiC-N-0), and the average layer thickness is relatively 0.1 to 1.5 μm. When this thin, weeping state is subjected to ion implantation treatment to allow the ion implanted components to permeate through the coating layer and into the surface of the substrate, the adhesion strength of the coating layer to the substrate surface will be significantly improved. Not only that, the hardness of the coating layer itself is further improved due to the presence of the ion-implanted component, and the coating layer does not peel off even when cutting under severe conditions, resulting in significantly superior wear resistance. We have obtained knowledge that it will be effective over a long period of time.
この発明は、上記知見にもとづいてなされたものであっ
て、
結合相形成成分としてのＣｏ、Ｎｉ、およびＦｃのうち
の１種以上：４〜１５％、
を含有し、さらに必要に応じて、
分散相形成成分としての（Ｔｉ 、 Ｔａ 、 ＮｂＷ
）Ｃ−Ｎのうちの１種以上＝０．５〜３０％、を含有し
、残りが同じく分散相形成成分としてのＷＣと不可避不
純物からなる組成を有するＷＣＣ超超硬合金基体表面に
、ＴｉＣ−Ｎ・０のうちのいずれか１種からなる単層の
被覆層を形成してなる表面波ｇｗｃ基超硬合金製切削工
具（こ、上記被覆層の厚さを平均層厚で０．１〜１．５
ｍと相対的に薄くした状態で、イオン注入処理を施し
、イオン注入成分を上記被覆層を通して上記基体の表面
部まで滲透させることによって、上記被覆層の上記基体
表面に対する密着性の向上、並びに上記被覆層自体の硬
さ向上をはかる表面被覆ＷＣＣ超超硬合金製切削工具製
造法に特徴を有するものである。This invention was made based on the above findings, and contains 4 to 15% of one or more of Co, Ni, and Fc as bonding phase forming components, and further contains, if necessary, (Ti, Ta, NbW as dispersed phase forming components)
) 0.5 to 30% of one or more of C--N, and the rest is WC as a dispersed phase-forming component and unavoidable impurities. - A surface wave GWC-based cemented carbide cutting tool formed with a single coating layer consisting of any one of N and 0 (the thickness of the coating layer is 0.1 in average layer thickness) ~1.5
By performing ion implantation treatment in a state where the thickness is relatively thin to m and allowing the ion implantation component to permeate through the coating layer to the surface of the substrate, the adhesion of the coating layer to the surface of the substrate can be improved, and the above-mentioned This method is characterized by a method for manufacturing a surface-coated WCC cemented carbide cutting tool that improves the hardness of the coating layer itself.
つぎに、この発明の表面被覆ＷＣＣ超超硬合金製切削工
具製造法において、上記の通りに数値限定した理由を説
明する。Next, in the method for manufacturing a surface-coated WCC cemented carbide cutting tool of the present invention, the reason why the numerical values are limited as described above will be explained.
（ａ） 基体における結合相形成成分の含有量これら
の成分には、分散相と強固に結合し、基体の強度および
靭性を向上させる作用があるが、その含有量が４％未満
では前記作用に所望の効果が得られず、一方その含有量
が１５％を越えると、基体の耐摩耗性が低下するように
なることから、その含有量を４〜１５％と定めた。(a) Content of binder phase-forming components in the substrate These components have the effect of strongly bonding with the dispersed phase and improving the strength and toughness of the substrate, but if the content is less than 4%, this effect will not be achieved. The desired effect could not be obtained, and if the content exceeded 15%, the wear resistance of the substrate would decrease, so the content was set at 4 to 15%.
（ｂ） 基体における（Ｔｉ、Ｔａ、Ｎｂ、Ｗ）Ｃ−
Ｎの含有量
これらの成分には、基体の硬さを高めて、耐摩耗性を向
上させる作用があるので、必要に応じて含有させるが、
その含有量が０．５％未満では所望の耐摩耗性向上効果
が得られず、一方その含有量が３０％を越えると基体の
靭性が低下するようになることから、その含有量を０．
５〜３０％と定めた。(b) (Ti, Ta, Nb, W)C- in the substrate
Content of N These components have the effect of increasing the hardness of the base and improving wear resistance, so they may be included as necessary.
If the content is less than 0.5%, the desired effect of improving wear resistance cannot be obtained, while if the content exceeds 30%, the toughness of the substrate will decrease.
It was set at 5-30%.
（ｅ） 被覆層の平均層厚
その平均層厚が０．１−未満では、被覆層形成による耐
摩耗性向上効果が十分に現われず、一方その平均層厚が
１．５−を越えると、現在のイオン注入技術ではイオン
注入成分を１．５庫を越えてそれ以上の深さまで注入す
ることは困難であり、したがって、イオン注入成分を被
覆層を通して基体表面部内まで滲透させることができず
、この結果被覆層自体の硬さは向上するようになるが、
基体表面に対する被覆層の付着強度の改善はなされない
ことから、その平均層厚を０．１〜１．５ｍと定めた。(e) Average layer thickness of the coating layer If the average layer thickness is less than 0.1-, the effect of improving wear resistance by forming the coating layer will not be sufficiently exhibited, while on the other hand, if the average layer thickness exceeds 1.5-, With current ion implantation technology, it is difficult to implant the ion implantation component to a depth of more than 1.5 depths, and therefore the ion implantation component cannot penetrate through the coating layer to the surface of the substrate. As a result, the hardness of the coating layer itself improves, but
Since the adhesion strength of the coating layer to the substrate surface was not improved, the average layer thickness was determined to be 0.1 to 1.5 m.
つぎに、この発明の方法を実施例により具体的に説明す
る。Next, the method of the present invention will be specifically explained using examples.
原料粉末として、いずれも１〜５，５虜の範囲内の平均
粒径を有するＷＣ粉末、３種の（Ｔ１．Ｔａ。As raw material powders, three types of WC powders (T1.Ta.
Ｎｂ、Ｗ）Ｃ−Ｎ粉末、すなわち、いずれも重量比で、
Ｔ ｉ Ｃ／ＷＣ−３０／７０の（Ｔｉ、Ｗ）Ｃ粉末、
Ｔ ｉ Ｃ／ＴａＣ／ＷＣ＝３０／２０１５０の（Ｔｉ
、Ｔａ。Nb, W)C-N powder, i.e. both in weight ratio,
(Ti,W)C powder of TiC/WC-30/70,
TiC/TaC/WC=30/20150 (Ti
, Ta.
Ｗ）粉末、Ｔ ｉ Ｃ／ Ｔ ｉ Ｎ／Ｔ ａ Ｃ／Ｎ
ｂ Ｃ／Ｗ Ｃ−１５／１５／２７／ ３ ／４０の
（Ｔｉ、Ｔａ、Ｎｂ、Ｗ）ＣＮ粉末、Ｃｏ粉末、Ｎ１粉
末、およびＦｅ粉末を用意し、これら原料粉末をそれぞ
れ第１表に示される配合組成に配合し、ボールミルにて
７２時時間式混合し、乾燥した後、１０ｔｏｎ／ｃｄの
圧力にて圧粉体にプレス成形し、この圧粉体を５ Ｘ
１Ｏ−２ｔｏｒｒの真空中、１３８０〜１５００℃の範
囲内の温度で焼結して実質的に配合組成と同一の成分組
成を有するＷＣＣ超超硬合金基体製造し、引続いて物理
蒸着装置であるイオンブレーティング装置を用い、第１
表に示される組成および平均層厚を有する被覆層をそれ
ぞれ前記ＷＣＣ超超硬合金基体表面に形成し、ついでこ
れに同じく第１表に示される条件でイオン注入処理を施
すことにより本発明法１〜１２を実施し、直径＝１龍を
有する本発明表面被覆ＷＣＣ超超硬合金製ミニチュアド
リル以下本発明被覆超硬ミニチュアドリルという）をそ
れぞれ製造した。W) Powder, T i C/ T i N/T a C/N
b C/W C-15/15/27/3/40 (Ti, Ta, Nb, W) CN powder, Co powder, N1 powder, and Fe powder were prepared, and these raw material powders were listed in Table 1. The mixture was blended into the indicated composition, mixed for 72 hours in a ball mill, dried, and then press-molded into a green compact at a pressure of 10 tons/cd.
A WCC cemented carbide substrate having substantially the same composition as the compound composition is produced by sintering at a temperature in the range of 1380 to 1500°C in a vacuum of 1O-2 torr, followed by physical vapor deposition. Using an ion brating device, the first
Method 1 of the present invention by forming a coating layer having the composition and average layer thickness shown in the table on the surface of the WCC cemented carbide substrate, and then subjecting it to ion implantation treatment under the conditions also shown in Table 1. - 12 were carried out to produce miniature drills made of the surface-coated WCC cemented carbide of the present invention (hereinafter referred to as the coated carbide miniature drill of the present invention) each having a diameter of 1 diameter.
つぎに、この結果得られた本発明被覆超硬ミニチュアド
リル、および上記のイオン注入処理を施さない状態の表
面被覆ＷＣＣ超超硬合金製ミニチュアドリルこれは従来
表面被覆ＷＣＣ超超硬合金製ミニチュアドリル相当する
ので、以下従来被覆超硬ミニチュアドリルという）につ
いて、被削材：厚さ１．６ｍｍを有するガラスエポキシ
樹脂（Ｇ１０相当）の３枚重ね積層板、切削速度： ２
５０ ｍ／ｍｉｎ 。Next, the coated carbide miniature drill of the present invention obtained as a result, and the surface-coated WCC cemented carbide miniature drill without the above-mentioned ion implantation treatment.This is the same as the conventional surface-coated WCC cemented carbide miniature drill. (hereinafter referred to as conventional coated carbide miniature drill), workpiece material: 3-ply laminate of glass epoxy resin (equivalent to G10) having a thickness of 1.6 mm, cutting speed: 2
50 m/min.
送 リ： ０．０７關／ｒｅｖ。Shipping: 0.07/rev.
切削油剤コなし、
の条件で穴明は加工試験を行ない、使用寿命に至るまで
の穴加工数を測定すると共に、試験後の被覆層の剥離の
有無を観察した。なお、使用寿命は加工穴径に１±０．
０５ｍｍのバラツキが生じた時点をもって定めた。これ
らの結果を第１表に示した。A machining test was conducted under the conditions of no cutting oil, and the number of holes drilled until the end of the service life was measured, and the presence or absence of peeling of the coating layer after the test was observed. In addition, the service life is 1±0.
It was determined at the time when a variation of 0.05 mm occurred. These results are shown in Table 1.
また、第１表には試験前のヌープ硬さをそれぞれ示した
。Table 1 also shows the Knoop hardness before the test.
第１表に示される結果から、本発明法１〜１２によって
製造された本発明被覆超硬ミニチュアドリルは、いずれ
も被覆層の基体表面に対する密着性にすぐれ、かつ高硬
度を有するので、被覆層に剥離現象が発生することなく
、すぐれた耐摩耗性を示し、長期に亘っての使用が可能
であるのに対して、イオン注入処理が施されていない従
来被覆超硬ミニチュアドリルは、いずれも被覆層の基体
表面への密着性が十分強固なものでなく、硬さも相対的
に低いことと含まって、被覆層に剥離が発生し、十分な
耐摩耗性が得られないことから、相対的に著しく低い使
用寿命しか示さないことが明らかである。From the results shown in Table 1, the coated carbide miniature drills of the present invention manufactured by methods 1 to 12 of the present invention all have excellent adhesion of the coating layer to the substrate surface and high hardness, so the coating layer However, conventional coated carbide miniature drills that are not subjected to ion implantation have excellent wear resistance and can be used for a long period of time without any peeling phenomenon. The adhesion of the coating layer to the substrate surface is not strong enough and the hardness is relatively low, which causes peeling of the coating layer and insufficient wear resistance. It is clear that the product has a significantly lower service life.
上述のように、この発明の方法によれば、被覆層の基体
表面への付着強度が、被覆層を通して基体表面部内まで
滲透したイオン注入成分によって著しく向上し、さらに
被覆層自体の硬さもイオン注入成分の存在によって一段
と高められた表面被覆超硬合金製切削工具を製造するこ
とができ、したがってこれを高速切削や重切削などの苛
酷な条件下で用いても被覆層に剥離が発生することなく
、すぐれた耐摩耗性を著しく長期に亘って発揮するので
ある。As described above, according to the method of the present invention, the adhesion strength of the coating layer to the substrate surface is significantly improved by the ion-implanted component that permeates through the coating layer to the inside of the substrate surface, and the hardness of the coating layer itself is also improved by the ion implantation. The presence of these ingredients makes it possible to manufacture cutting tools made of cemented carbide with a higher surface coating, and therefore the coating layer does not peel off even when used under harsh conditions such as high-speed cutting and heavy cutting. It exhibits excellent wear resistance over an extremely long period of time.
出願入量 三菱金属株式会社Application intake Mitsubishi Metals Co., Ltd.
Claims (2)
のうちの１種以上：４〜１５重量％、 を含有し、残りが分散相形成成分としての炭化タングス
テンと不可避不純物からなる組成を有する炭化タングス
テン基超硬合金基体の表面に、炭化チタン、窒化チタン
、炭窒化チタン、炭酸化チタン、窒酸化チタン、および
炭窒酸化チタンのうちのいずれか１種からなる単層の被
覆層を形成してなる表面被覆炭化タングステン基超硬合
金製切削工具に、 上記被覆層の厚さを平均層厚で０．１〜１．５μｍと相
対的に薄くした状態で、イオン注入処理を施し、イオン
注入成分を上記被覆層を通して上記基体の表面部まで滲
透させることによって、上記被覆層の上記基体表面に対
する密着性の向上、並びに上記被覆層自体の硬さ向上を
はかることを特徴とする表面被覆炭化タングステン基超
硬合金製切削工具の製造法。(1) Co, Ni, and Fe as bonded phase forming components
One or more of the following: 4 to 15% by weight, with the remainder consisting of tungsten carbide as a dispersed phase forming component and unavoidable impurities. A surface-coated tungsten carbide-based cemented carbide cutting tool formed with a single coating layer consisting of any one of titanium, titanium carbonitride, titanium carbonate, titanium nitride, and titanium carbonitoxide. , Perform ion implantation treatment while making the thickness of the coating layer relatively thin to an average layer thickness of 0.1 to 1.5 μm, and allow the ion implantation component to permeate through the coating layer to the surface of the substrate. A method for manufacturing a surface-coated tungsten carbide-based cemented carbide cutting tool, characterized in that the adhesion of the coating layer to the surface of the substrate is improved, and the hardness of the coating layer itself is improved.
のうちの１種以上：４〜１５重量％、 を含有し、さらに、 分散相形成成分としてのＴｉ、Ｔａ、Ｎｂ、およびＷの
炭化物、窒化物、および炭窒化物、並びにこれらの２種
以上の固溶体（ただしＷの窒化物と炭窒化物は除く）の
うちの１種以上：０．５〜３０重量％、 を含有し、残りが分散相形成成分としての炭化タングス
テンと不可避不純物からなる組成を有する炭化タングス
テン基超硬合金基体の表面に、炭化チタン、窒化チタン
、炭窒化チタン、炭酸化チタン、窒酸化チタン、および
炭窒酸化チタンのうちのいずれか１種からなる単層の被
覆層を形成してなる表面被覆炭化タングステン基超硬合
金製切削工具に、 上記被覆層の厚さを平均層厚で０．１〜１．５μｍと相
対的に薄くした状態で、イオン注入処理を施し、イオン
注入成分を上記被覆層を通して上記基体の表面部まで滲
透させることによって、上記被覆層の上記基体表面に対
する密着性の向上、並びに上記被覆層自体の硬さ向上を
はかることを特徴とする表面被覆炭化タングステン基超
硬合金製切削工具の製造法。(2) Co, Ni, and Fe as bonded phase forming components
Contains one or more of the following: 4 to 15% by weight, and further contains carbides, nitrides, and carbonitrides of Ti, Ta, Nb, and W as dispersed phase forming components, and two or more of these. A composition containing 0.5 to 30% by weight of one or more of solid solutions of (excluding nitrides and carbonitrides of W), with the remainder consisting of tungsten carbide as a dispersed phase forming component and unavoidable impurities. A single coating layer made of any one of titanium carbide, titanium nitride, titanium carbonitride, titanium carbonate, titanium nitride, and titanium carbonitoxide on the surface of the tungsten carbide-based cemented carbide substrate having A cutting tool made of a surface-coated tungsten carbide-based cemented carbide is subjected to ion implantation treatment with the coating layer having a relatively thin average layer thickness of 0.1 to 1.5 μm. , a surface characterized in that the adhesion of the coating layer to the surface of the substrate is improved and the hardness of the coating layer itself is improved by permeating the ion-implanted component through the coating layer to the surface of the substrate. A method for manufacturing a cutting tool made of coated tungsten carbide-based cemented carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17018688A JPH0222454A (en) | 1988-07-08 | 1988-07-08 | Production of cutting tool made of surface-treated tungsten carbide-base sintered hard alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17018688A JPH0222454A (en) | 1988-07-08 | 1988-07-08 | Production of cutting tool made of surface-treated tungsten carbide-base sintered hard alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0222454A true JPH0222454A (en) | 1990-01-25 |
Family
ID=15900280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17018688A Pending JPH0222454A (en) | 1988-07-08 | 1988-07-08 | Production of cutting tool made of surface-treated tungsten carbide-base sintered hard alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0222454A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999010552A1 (en) * | 1997-08-27 | 1999-03-04 | Kennametal Inc. | A ROTARY EARTH STRATA PENETRATING TOOL WITH A CERMET INSERT HAVING A Co-Ni-Fe-BINDER |
| WO1999010551A1 (en) * | 1997-08-27 | 1999-03-04 | Kennametal Inc. | A PICK-STYLE TOOL WITH A CERMET INSERT HAVING A Co-Ni-Fe-BINDER |
| WO1999010553A1 (en) * | 1997-08-27 | 1999-03-04 | Kennametal Inc. | A CUTTING INSERT OF A CERMET HAVING A Co-Ni-Fe-BINDER |
| WO1999010550A1 (en) * | 1997-08-27 | 1999-03-04 | Kennametal Inc. | An elongate rotary machining tool comprising a cermet having a co-ni-fe-binder |
| US7732066B2 (en) | 2001-12-26 | 2010-06-08 | Sumitomo Electric Industries, Ltd. | Surface-coated machining tools |
| CZ305378B6 (en) * | 2000-12-22 | 2015-08-26 | Seco Tools Ab | Cutting tool insert comprising hard metal substrate and coating |
| JP2016098393A (en) * | 2014-11-20 | 2016-05-30 | 日本特殊合金株式会社 | Hard metal alloy |
| WO2018167534A1 (en) * | 2017-03-15 | 2018-09-20 | University Of The Witwatersrand, Johannesburg | Ion implanted hardmetal cemented carbide cold sprayed coatings |
-
1988
- 1988-07-08 JP JP17018688A patent/JPH0222454A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999010552A1 (en) * | 1997-08-27 | 1999-03-04 | Kennametal Inc. | A ROTARY EARTH STRATA PENETRATING TOOL WITH A CERMET INSERT HAVING A Co-Ni-Fe-BINDER |
| WO1999010551A1 (en) * | 1997-08-27 | 1999-03-04 | Kennametal Inc. | A PICK-STYLE TOOL WITH A CERMET INSERT HAVING A Co-Ni-Fe-BINDER |
| WO1999010553A1 (en) * | 1997-08-27 | 1999-03-04 | Kennametal Inc. | A CUTTING INSERT OF A CERMET HAVING A Co-Ni-Fe-BINDER |
| WO1999010550A1 (en) * | 1997-08-27 | 1999-03-04 | Kennametal Inc. | An elongate rotary machining tool comprising a cermet having a co-ni-fe-binder |
| AU735278B2 (en) * | 1997-08-27 | 2001-07-05 | Kennametal Inc. | An elongate rotary machining tool comprising a cermet having a CO-NI-FE-binder |
| CN1092241C (en) * | 1997-08-27 | 2002-10-09 | 钴碳化钨硬质合金公司 | A cutting insert of a cermet having a Co-Ni-Fe-binder |
| CZ305378B6 (en) * | 2000-12-22 | 2015-08-26 | Seco Tools Ab | Cutting tool insert comprising hard metal substrate and coating |
| US7732066B2 (en) | 2001-12-26 | 2010-06-08 | Sumitomo Electric Industries, Ltd. | Surface-coated machining tools |
| JP2016098393A (en) * | 2014-11-20 | 2016-05-30 | 日本特殊合金株式会社 | Hard metal alloy |
| WO2018167534A1 (en) * | 2017-03-15 | 2018-09-20 | University Of The Witwatersrand, Johannesburg | Ion implanted hardmetal cemented carbide cold sprayed coatings |
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