JP2012528732A - ナノ積層コーティングされた切削工具 - Google Patents
ナノ積層コーティングされた切削工具 Download PDFInfo
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Abstract
Description
本発明によれば、超硬合金、サーメット、セラミックス、立方晶窒化ホウ素を基礎とした材料又は高速度鋼、好ましくは超硬合金及びサーメットの硬質合金の本体を含む、チップ除去による機械加工のための切削工具であって、その上に厚さが0.5〜20μm、好ましくは0.5〜10μm、最も好ましくは0.5〜5μmである、A層及びB層の互層の多結晶のナノ積層構造を含む硬質かつ耐摩耗性のコーティングが堆積された切削工具が提供される。好ましくは、このナノ積層構造は、例えば、ナノ積層構造の中間領域、即ち成長方向の厚さの30〜70%内の領域の断面走査型電子顕微鏡により測定されるように、平均柱幅が20〜1000nm、好ましくは20〜500nmであり、前記平均柱幅は、隣接する少なくとも10本の柱の幅を計測した平均である、全体として柱状の構造である。
表1のコーティングは、以下のインサート上に陰極アーク蒸着によって堆積させた。
Sl:超硬合金(90重量%WC+10重量%Co)
S2:超硬合金(94重量%WC+6重量%Co)
S3:Seco Tools商用サーメットグレード、CM
S1インサート上のコーティング1〜8、10、12、22、29、34〜45は、以下の条件の下で試験した:
配置: CNMG120408−MF1
適用: 長軸回転
工作物の材料: AISI 316L
切削速度: 230m/分
送り: 0.15mm/回転
切込み深さ: 1.5mm
工具寿命基準: フランク摩耗(vb)>0.3mm
S2インサート上のコーティング1、4、6、15、33、37、39、41、45を以下の条件の下で試験した:
配置: CNMG120408−MFl
適用: 長軸回転
工作物の材料: Inconel 718
切削速度: 70m/分
送り: 0.2mm/回転
切込み深さ: ap=0.5mm
工具寿命基準: フランク摩耗(vb)>0.3mm
S3インサート上のコーティング1、3、9、17、36、39〜45を以下の条件の下で試験した:
配置: DCMT11T304−F1
適用: 長軸回転
工作物の材料: DIN 100Cr6
切削速度: 250m/分
送り: 0.15mm/回転
切込み深さ: ap=0.5mm
工具寿命基準: フランク摩耗(vb)>0.2mm
Claims (7)
- 超硬合金、サーメット、セラミックス、立方晶窒化ホウ素を基礎とした材料又は高速度鋼の硬質合金の本体を含む、その上に硬質かつ耐摩耗性のPVDコーティングが堆積された、チップ除去による機械加工のための切削工具インサートであって、
前記コーティングがA層及びB層の互層の柱状かつ多結晶のナノ積層構造を含み、層Aは(Ti1-xAlxMe1p)Naであり、ここで、0.3<x<0.95、好ましくは0.45<x<0.75、0.90<a<1.10、好ましくは0.96<a<1.04、0≦p<0.15であり、Me1は、Zr、Y、V、Nb、Mo及びWの1種以上であり、層Bは(Ti1-y-zSiyMe2z)Nbであり、ここで、0.05<y<0.25好ましくは0.05<y<0.18、0≦z<0.4、0.9<b<1.1、好ましくは0.96<b<1.04であり、Me2は、Y、V、Nb、Mo、W及びAlの1種以上であり、ナノ積層構造の厚さが0.5〜20μm、好ましくは0.5〜10μmであり、平均柱幅が20〜1000nmであり、そしてA層及びB層のそれぞれの平均厚さが1〜50nmであることを特徴とする、切削工具インサート。 - 前記ナノ積層構造が、X線回折で測定されるように、立方相及び六方相の相の混合、好ましくは立方相のみを含むことを特徴とする、請求項1に記載の切削工具インサート。
- z=p=0であることを特徴とする、請求項1及び2のいずれかに記載の切削工具インサート。
- 前記コーティングが、TiN、TiC、Ti(C,N)若しくは(Ti、Al)N、好ましくは(Ti、Al)Nの内部単層及び/若しくは多層コーティング、並びに/又はTiN、TiC、Ti(C,N)、(Ti、Si)N若しくは(Ti、Al)N、好ましくは(Ti、Si)N若しくは(Ti、Al)Nの外部単層及び/若しくは多層コーティングを含み、ナノ積層構造の厚さを含む全コーティング厚さが0.5〜30μm、好ましくは0.5〜15μmであることを特徴とする、請求項1〜3のいずれかに記載の切削工具インサート。
- 前記本体が超硬合金又はサーメットであることを特徴とする、請求項1〜4のいずれかに記載の切削工具インサート。
- 前記コーティングが、Ar+N2雰囲気下、好ましくは、純N2雰囲気下で、全圧0.5Pa〜9.0Pa、好ましくは1.5Pa〜5.0Paで、バイアスは、−10V〜−300V、好ましくは−20V〜−200V、350℃〜700℃、好ましくは400℃〜650℃にて50A〜200Aの蒸着電流を用いて(Ti、Al、Mel)N及び(Ti、Si、Me2)N層の所望の組成を得る合金の又は複合陰極の陰極アーク蒸着により堆積されることを特徴とする、請求項1に記載の切削工具インサートの製造方法。
- 切削速度50〜500m/分、好ましくは50〜300m/分、平均送り0.08〜0.5mm/回転、好ましくは0.1〜0.4mm/回転での、ステンレス鋼、超合金及び硬化鋼の機械加工のための、請求項1〜5のいずれかに記載の切削工具インサートを使用する方法。
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SE0900739A SE533884C2 (sv) | 2009-06-01 | 2009-06-01 | Nanolaminerat belagt skärverktyg |
PCT/SE2010/050580 WO2010140958A1 (en) | 2009-06-01 | 2010-05-28 | Nanolaminated coated cutting tool |
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EP (1) | EP2438209B1 (ja) |
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WO2010140958A1 (en) | 2010-12-09 |
KR20120015338A (ko) | 2012-02-21 |
EP2438209A1 (en) | 2012-04-11 |
EP2438209B1 (en) | 2019-07-31 |
CN102449194A (zh) | 2012-05-09 |
SE0900739A1 (sv) | 2010-12-02 |
US8852305B2 (en) | 2014-10-07 |
KR101764101B1 (ko) | 2017-08-02 |
EP2438209A4 (en) | 2016-09-14 |
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US20120114436A1 (en) | 2012-05-10 |
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