JP7470963B2 - 焼結体のバインダ金属相強化方法 - Google Patents
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- 229910052751 metal Inorganic materials 0.000 title claims description 100
- 239000002184 metal Substances 0.000 title claims description 100
- 239000011230 binding agent Substances 0.000 title claims description 96
- 238000000034 method Methods 0.000 title claims description 25
- 238000005728 strengthening Methods 0.000 title description 17
- 239000002245 particle Substances 0.000 claims description 143
- 239000007921 spray Substances 0.000 claims description 18
- 239000000919 ceramic Substances 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 235000019589 hardness Nutrition 0.000 description 94
- 239000011248 coating agent Substances 0.000 description 28
- 238000000576 coating method Methods 0.000 description 28
- 238000012360 testing method Methods 0.000 description 25
- 229910045601 alloy Inorganic materials 0.000 description 18
- 239000000956 alloy Substances 0.000 description 18
- 239000008187 granular material Substances 0.000 description 18
- 238000002347 injection Methods 0.000 description 18
- 239000007924 injection Substances 0.000 description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 18
- 238000005520 cutting process Methods 0.000 description 17
- 238000012545 processing Methods 0.000 description 17
- 239000000463 material Substances 0.000 description 12
- 229910009043 WC-Co Inorganic materials 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 11
- 238000011282 treatment Methods 0.000 description 11
- 239000011195 cermet Substances 0.000 description 10
- 238000010273 cold forging Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 10
- 239000011324 bead Substances 0.000 description 9
- 150000002739 metals Chemical class 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 238000005245 sintering Methods 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- 230000007423 decrease Effects 0.000 description 7
- 238000005229 chemical vapour deposition Methods 0.000 description 6
- 239000011247 coating layer Substances 0.000 description 6
- 239000010941 cobalt Substances 0.000 description 6
- 229910017052 cobalt Inorganic materials 0.000 description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 6
- 239000002344 surface layer Substances 0.000 description 6
- 239000011521 glass Substances 0.000 description 5
- 238000003754 machining Methods 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- -1 oxides Chemical class 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 238000010998 test method Methods 0.000 description 5
- 229910000997 High-speed steel Inorganic materials 0.000 description 4
- 238000005422 blasting Methods 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- 238000000280 densification Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- 238000005240 physical vapour deposition Methods 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 4
- 229910000531 Co alloy Inorganic materials 0.000 description 3
- 239000000443 aerosol Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 150000001247 metal acetylides Chemical class 0.000 description 3
- 229910052582 BN Inorganic materials 0.000 description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000005524 ceramic coating Methods 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000005480 shot peening Methods 0.000 description 2
- 229910021332 silicide Inorganic materials 0.000 description 2
- 239000012798 spherical particle Substances 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 229910010037 TiAlN Inorganic materials 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
- B22F3/164—Partial deformation or calibration
-
- 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
-
- 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
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
- B22F3/164—Partial deformation or calibration
- B22F2003/166—Surface calibration, blasting, burnishing, sizing, coining
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
- C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
- C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Powder Metallurgy (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Description
炭化タングステン(WC)等の硬質粒子10と,該硬質粒子10を結合するコバルト(Co)等のバインダ金属相20を有する,超硬合金等の焼結体1であって,少なくとも表面の一部が厚さ5μm以下の硬質被膜によってコーティングされた焼結体1を処理対象とし,前記焼結体1の前記硬質被膜がコーティングされている部分の前記表面に,前記バインダ金属相20の硬度以上の硬度を有し,かつ,前記焼結体1よりも低硬度でHV800以下の硬度である♯100~♯800(平均粒径149μm~20μm)のセラミックス粒体から成る球状噴射粒体30を,圧縮気体と共に噴射圧力0.2~0.6MPa,又は噴射速度80~200m/秒で噴射することを特徴とする(請求項1)。
本発明は,硬質粒子10をバインダ金属と共に焼結した焼結体を処理対象とし,前述した硬質粒子10としては,単一種類の硬質粒子のみならず,複数種類の硬質粒子を混在させて使用するものとして良く,また,バインダ金属も一種類の金属を単独で使用したものだけでなく,合金を使用するものとしても良い。
以上で説明した処理対象である焼結体1に対しては,その表面に噴射粒体30を圧縮気体と共に乾式噴射する。
以上のようにして噴射粒体30を焼結体1の表面に噴射して衝突させることで,焼結体1を脆性破壊が生じ難い,靭性に富んだ性質に改変することができた。
(1)試験方法
WC―Co超硬合金(HV1450)製の冷間鍛造用パンチ(直径20mm,長さ150mm)に対し,下記の表1に示す条件で噴射粒体の噴射を行った。
上記試験例1の試験結果を下記の表2に示す。
上記の結果より,Co相の硬度(約HV700)よりも高硬度であるHV1000の噴射粒体を使用した実施例1では,処理対象物の表面に変形を生じさせて僅かに梨地となっていることが確認できると共に,未処理の場合に比較して寿命が3倍となった。
WC―Co超硬合金(HV1150)製のヘッダー加工用ダイ(外径50mm,内径15mm,高さ30mm)に対し,下記の表3に示す条件で噴射粒体の噴射を行った。
上記試験例2の試験結果を下記の表4に示す。
上記の結果より,Co相の硬度(約HV700)よりも高硬度であるHV1000の噴射粒体を使用した実施例2では,処理対象物の表面に塑性変形を生じさせて僅かに梨地となっていることが確認できると共に,未処理の場合に比較して寿命を3倍に伸ばすことができており,本発明で規定する硬度範囲の噴射粒体の使用が焼結体の靭性を向上させる上で有効であることが確認された。
(1)試験方法
WC-TiC-TaC-Co超硬合金〔HRA91.5(HV1600)〕製のドリル(直径5mm)に対し,下記の表5に示す条件で噴射粒体の噴射を行った。
未処理のドリルでは,500穴の加工でチッピングにより刃先の再研磨が必要となっていたが,本発明の方法で処理を行ったドリルでは,1300穴加工まで再研磨を行うことなく穴開け加工が可能であり,ドリルの寿命を大幅に伸ばすことができた。
(1)試験方法
SUS304製シリンダの内径旋削用のTiCN-NbC-Niサーメット製菱形チップ〔HRA93(HV1900)〕に対し,下記の表6に示す条件で噴射粒体の噴射を行った。
未処理のチップの刃先部分の表面は平滑であったが,実施例4の処理条件で処理を行った後のチップの刃先は,わずかに梨地となっており,前述した噴射粒体の噴射によって,チップの刃先表面に塑性変形を生じさせることができることが確認された。
(1)試験方法
CVD法により膜厚約3μmのTiC被膜がコーティングされた,WC-TiC-TaC-Co超硬合金〔HRA91.5(HV1600)〕製の切削用菱形チップに対し,下記の表7に示す条件で噴射粒体の噴射を行った。
上記試験の結果を,表8に示す。
未処理のチップでは,50本のシャフトの加工でTiCコーティングの剥離と,超硬合金製母材のチッピングが生じて交換が必要となっていたが,実施例5の処理を行ったチップでは,TiC被膜の剥離が防止されて120本のシャフトの加工が可能となっており,寿命が大幅に向上された。
(1)試験方法
立方晶窒化ホウ素をCoバインダで焼結して成るcBN(HV4700)製の切削用菱形チップに対し,下記の表9に示す条件で噴射粒体の噴射を行った。
上記試験の結果,未処理のチップでは,200本の浸炭焼き入れしたシャフトの加工によって寿命となっていたのに対し,実施例6の条件で噴射粒体を噴射したチップでは,倍の400本の浸炭焼入シャフトの加工が可能となった。
10 硬質粒子(WC粒子)
20 バインダ金属相(Co相)
30 噴射粒体
Claims (1)
- 硬質粒子と,該硬質粒子を結合するバインダ金属相を有する焼結体であって,少なくとも表面の一部が厚さ5μm以下の硬質被膜によってコーティングされた焼結体を処理対象とし,前記焼結体の前記硬質被膜がコーティングされている部分の前記表面に,前記バインダ金属相の硬度以上の硬度を有し,かつ,HV800以下の硬度である♯100~♯800(平均粒径149μm~20μm)のセラミックス粒体から成る球状噴射粒体を,圧縮気体と共に噴射圧力0.2~0.6MPa,又は噴射速度80~200m/秒で噴射することを特徴とする,焼結体のバインダ金属相強化方法。
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JP2020011102A JP7470963B2 (ja) | 2020-01-27 | 2020-01-27 | 焼結体のバインダ金属相強化方法 |
US17/001,351 US20210230729A1 (en) | 2020-01-27 | 2020-08-24 | Method of strengthening binder metal phase of sintered body |
CN202010868305.XA CN113172226B (zh) | 2020-01-27 | 2020-08-26 | 烧结体的结合剂金属相的强化方法 |
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Citations (4)
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JP2008264988A (ja) | 2007-03-28 | 2008-11-06 | Kyocera Corp | 切削工具の製造方法 |
JP2009293110A (ja) | 2008-06-09 | 2009-12-17 | Toyota Central R&D Labs Inc | 被覆部材の製造方法および被覆部材 |
JP2012505761A (ja) | 2008-10-21 | 2012-03-08 | デグテック エルティーディー | 切削工具及びその表面処理方法 |
JP2012135864A (ja) | 2010-12-08 | 2012-07-19 | Fuji Kihan:Kk | 金属成品の瞬間熱処理法 |
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US6884496B2 (en) * | 2001-03-27 | 2005-04-26 | Widia Gmbh | Method for increasing compression stress or reducing internal tension stress of a CVD, PCVD or PVD layer and cutting insert for machining |
DE602004019527D1 (de) * | 2003-05-26 | 2009-04-02 | Sintokogio Ltd | Verfahren zum härten einer oberfläche eines schneidwerkzeugs aus gesintertem material |
WO2006064724A1 (ja) * | 2004-12-14 | 2006-06-22 | Sumitomo Electric Hardmetal Corp. | 表面被覆切削工具 |
JP5723942B2 (ja) * | 2013-09-18 | 2015-05-27 | 株式会社不二機販 | 粉末状金属材料の表面処理方法 |
AT15412U1 (de) * | 2016-06-27 | 2017-08-15 | Ceratizit Austria Gmbh | Verfahren zur mechanischen Ausheilung funktionaler Hartmetall- oder Cermet-Oberflächen |
US10882158B2 (en) * | 2019-01-29 | 2021-01-05 | General Electric Company | Peening coated internal surfaces of turbomachine components |
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2020
- 2020-01-27 JP JP2020011102A patent/JP7470963B2/ja active Active
- 2020-08-24 US US17/001,351 patent/US20210230729A1/en not_active Abandoned
- 2020-08-26 CN CN202010868305.XA patent/CN113172226B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008264988A (ja) | 2007-03-28 | 2008-11-06 | Kyocera Corp | 切削工具の製造方法 |
JP2009293110A (ja) | 2008-06-09 | 2009-12-17 | Toyota Central R&D Labs Inc | 被覆部材の製造方法および被覆部材 |
JP2012505761A (ja) | 2008-10-21 | 2012-03-08 | デグテック エルティーディー | 切削工具及びその表面処理方法 |
JP2012135864A (ja) | 2010-12-08 | 2012-07-19 | Fuji Kihan:Kk | 金属成品の瞬間熱処理法 |
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CN113172226A (zh) | 2021-07-27 |
JP2021115672A (ja) | 2021-08-10 |
US20210230729A1 (en) | 2021-07-29 |
CN113172226B (zh) | 2023-08-22 |
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