JP7359522B2 - 焼結体及び切削工具 - Google Patents
焼結体及び切削工具 Download PDFInfo
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- JP7359522B2 JP7359522B2 JP2022521740A JP2022521740A JP7359522B2 JP 7359522 B2 JP7359522 B2 JP 7359522B2 JP 2022521740 A JP2022521740 A JP 2022521740A JP 2022521740 A JP2022521740 A JP 2022521740A JP 7359522 B2 JP7359522 B2 JP 7359522B2
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- 238000005520 cutting process Methods 0.000 title claims description 105
- 239000002245 particle Substances 0.000 claims description 90
- 229910003460 diamond Inorganic materials 0.000 claims description 83
- 239000010432 diamond Substances 0.000 claims description 83
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 58
- 229910052796 boron Inorganic materials 0.000 claims description 51
- 239000011230 binding agent Substances 0.000 claims description 44
- 239000000463 material Substances 0.000 claims description 25
- 229910052751 metal Inorganic materials 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 24
- 230000000737 periodic effect Effects 0.000 claims description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 16
- 239000010941 cobalt Substances 0.000 claims description 15
- 229910017052 cobalt Inorganic materials 0.000 claims description 15
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 15
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 12
- 229910000765 intermetallic Inorganic materials 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 9
- 150000002739 metals Chemical class 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 239000006104 solid solution Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 description 27
- 238000005245 sintering Methods 0.000 description 18
- 238000000034 method Methods 0.000 description 13
- 238000001878 scanning electron micrograph Methods 0.000 description 9
- 238000010998 test method Methods 0.000 description 9
- 238000005259 measurement Methods 0.000 description 8
- 238000002156 mixing Methods 0.000 description 8
- 238000010306 acid treatment Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 239000011812 mixed powder Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010884 ion-beam technique Methods 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 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
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 229910052580 B4C Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001036 glow-discharge mass spectrometry Methods 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- JVJQPDTXIALXOG-UHFFFAOYSA-N nitryl fluoride Chemical compound [O-][N+](F)=O JVJQPDTXIALXOG-UHFFFAOYSA-N 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000001226 reprecipitation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910003468 tantalcarbide Inorganic materials 0.000 description 1
- 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 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- B23B—TURNING; BORING
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Description
本発明者らが鋭意検討した結果、特許文献1に記載の焼結体及び特許文献2に記載の焼結体を切削工具に適用した場合に、工具寿命に改善の余地があることがわかった。本開示は、切削工具に適用した場合に工具寿命を改善可能な焼結体を提供するものである。
本開示の焼結体によると、切削工具に適用した場合に工具寿命を改善可能である。
まず、本開示の実施形態を列記して説明する。
(2)上記(1)の焼結体では、ダイヤモンド粒子中における硼素濃度が、0.005質量パーセント以上0.1質量パーセント以下であってもよい。結合材中における硼素濃度は、0.6質量パーセント以上33質量パーセント以下であってもよい。
[本開示の実施形態の詳細]
本開示の実施形態の詳細を、図面を参照しながら説明する。以下の図面においては、同一又は相当する部分に同一の参照符号を付し、重複する説明は繰り返さないものとする。
切削インサート100の構成を説明する。
図1は、切削インサート100の平面図である。図2は、切削インサート100の斜視図である。図1及び図2に示されるように、切削インサート100は、基材10と、刃先部20とを有している。切削インサート100は、平面視において多角形形状(例えば、三角形形状)である。多角形形状(三角形形状)は、厳密な多角形形状(三角形形状)でなくてもよい。より具体的には、切削インサート100の平面視におけるコーナは、丸まっていてもよい。
刃先部20は、ダイヤモンド粒子と、結合材とを含む焼結体により形成されている。刃先部20を構成している焼結体中におけるダイヤモンド粒子の平均粒径は、0.1μm以上50μm以下であることが好ましい。刃先部20を構成している焼結体中におけるダイヤモンド粒子の割合(体積比率)は、80体積パーセント以上99体積パーセント以下であることが好ましい。結合材は、例えば、コバルトを含んでいる。結合材は、コバルトに加え、チタンを含んでいてもよい。結合材中において最も含有量の多い成分は、コバルトであることが好ましい。
図3は、刃先部20を構成している焼結体の製造方法を示す工程図である。図3に示されるように、刃先部20を構成している焼結体の製造方法は、粉末準備工程S1と、粉末混合工程S2と、焼結工程S3とを有している。
以下に、切削インサート100の効果を説明する。
切削インサート100の効果を確認するために行った切削試験を説明する。
上記においては刃先部20を構成している焼結体に含まれる結合材がコバルトである場合を例として説明したが、刃先部20を構成している焼結体に含まれる結合材は、コバルトに限られない。
Claims (7)
- ダイヤモンド粒子と、結合材とを備え、
前記ダイヤモンド粒子中における硼素濃度は、0.001質量パーセント以上0.02質量パーセント以下であり、
前記結合材中における硼素濃度は、0.5質量パーセント以上40質量パーセント以下である、焼結体。 - 前記ダイヤモンド粒子中における硼素濃度は、0.005質量パーセント以上であり、
前記結合材中における硼素濃度は、0.6質量パーセント以上33質量パーセント以下である、請求項1に記載の焼結体。 - 前記ダイヤモンド粒子の平均粒径は、0.1μm以上50μm以下であり、
前記焼結体中における前記ダイヤモンド粒子の割合は、80体積パーセント以上99体積パーセント以下である、請求項1又は請求項2に記載の焼結体。 - 前記結合材は、単体金属、合金及び金属間化合物からなる群より選択される少なくとも1種を含み、
前記単体金属、前記合金及び前記金属間化合物は、周期表の第4族元素、周期表の第5族元素、周期表の第6属元素、鉄、アルミニウム、珪素、コバルト及びニッケルからなる群より選択された少なくとも1種の金属元素を含む、請求項1から請求項3のいずれか1項に記載の焼結体。 - 前記結合材は、化合物及び前記化合物由来の固溶体からなる群から選択される少なくとも1種を含み、
前記化合物は、単体金属、合金及び金属間化合物からなる群から選択される少なくとも1種と窒素、炭素及び酸素からなる群から選択される少なくとも1種とからなり、
前記単体金属、前記合金及び前記金属間化合物は、周期表の第4族元素、周期表の第5族元素、周期表の第6属元素、鉄、アルミニウム、珪素、コバルト及びニッケルからなる群より選択された少なくとも1種の金属元素を含む、請求項1から請求項3のいずれか1項に記載の焼結体。 - 前記結合材は、少なくともコバルトを含む、請求項1から請求項5のいずれか1項に記載の焼結体。
- 刃先部を備え、
前記刃先部は、請求項1から請求項6のいずれか1項に記載の前記焼結体により形成されている、切削工具。
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JP2005220015A (ja) | 2005-03-10 | 2005-08-18 | Sumitomo Electric Ind Ltd | 高強度・高耐摩耗性ダイヤモンド焼結体およびそれからなる工具ならびに非鉄金属の切削方法 |
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