公开(公告)号：EP3162779A1

公开(公告)日：2017-05-03

申请号：EP15812558

申请日：2015-06-26

申请人： KYOCERA CORP

发明人： HIROSAKI KOUJI

IPC分类号： C04B35/583 ,  B23B27/14 ,  B23B27/20

CPC分类号： B23B27/148 ,  B23B27/14 ,  B23B27/20 ,  C04B35/583 ,  C04B35/5831 ,  C04B35/6261 ,  C04B35/6303 ,  C04B35/645 ,  C04B35/6455 ,  C04B2235/3847 ,  C04B2235/386 ,  C04B2235/402 ,  C04B2235/405 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/602 ,  C04B2235/6021 ,  C04B2235/6022 ,  C04B2235/6027 ,  C04B2235/604 ,  C04B2235/612 ,  C04B2235/656 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/6567 ,  C04B2235/786 ,  C04B2235/80 ,  C22C26/00

摘要： Provided are a cBN sintered body having excellent wear resistance and a small specific resistance, and a cutting tool that uses the cBN sintered body and has excellent machinability and excellent wear resistance. The cBN sintered body contains cBN particles whose proportion is 85-97% by volume, and a binding phase whose proportion is 3-15% by volume. The cBN sintered body contains Al whose ratio to the entirety of the cBN sintered body is 0.1-5% by mass, and Co whose mass ratio to the Al is 3 to 40, and includes Al 3 B 6 Co 20 . The cutting tool, such as a cutting insert 1, uses the cBN sintered body as a cutting edge part 5.

摘要翻译： 本发明提供具有优异的耐磨损性和低电阻率的cBN烧结体，以及使用该cBN烧结体并且具有优异的可切削性和优异的耐磨性的切削工具。 cBN烧结体含有比例为85-97体积％的cBN颗粒和比例为3-15体积％的粘合相。 cBN烧结体含有相对于cBN烧结体整体的比例为0.1〜5质量％的Al，与Al的质量比为3〜40的Al，且包含Al 3 B 6 Co 20。 切削刀片1等切削工具使用cBN烧结体作为切削刃部5。

公开(公告)号：EP3162779A4

公开(公告)日：2018-03-14

申请号：EP15812558

申请日：2015-06-26

申请人： KYOCERA CORP

发明人： HIROSAKI KOUJI

IPC分类号： C04B35/5831 ,  B23B27/14 ,  B23B27/20 ,  C04B35/63 ,  C04B35/645 ,  C22C26/00

CPC分类号： B23B27/148 ,  B23B27/14 ,  B23B27/20 ,  C04B35/583 ,  C04B35/5831 ,  C04B35/6261 ,  C04B35/6303 ,  C04B35/645 ,  C04B35/6455 ,  C04B2235/3847 ,  C04B2235/386 ,  C04B2235/402 ,  C04B2235/405 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/602 ,  C04B2235/6021 ,  C04B2235/6022 ,  C04B2235/6027 ,  C04B2235/604 ,  C04B2235/612 ,  C04B2235/656 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/6567 ,  C04B2235/786 ,  C04B2235/80 ,  C22C26/00

摘要： Provided are a cBN sintered body having excellent wear resistance and a small specific resistance, and a cutting tool that uses the cBN sintered body and has excellent machinability and excellent wear resistance. The cBN sintered body contains cBN particles whose proportion is 85-97% by volume, and a binding phase whose proportion is 3-15% by volume. The cBN sintered body contains Al whose ratio to the entirety of the cBN sintered body is 0.1-5% by mass, and Co whose mass ratio to the Al is 3 to 40, and includes Al 3 B 6 Co 20 . The cutting tool, such as a cutting insert 1, uses the cBN sintered body as a cutting edge part 5.

公开(公告)号：EP2725111A4

公开(公告)日：2015-07-22

申请号：EP12805235

申请日：2012-06-27

申请人： KYOCERA CORP

发明人： KINOSHITA HIDEYOSHI ,  HANAKI KATSUHIRO ,  HIROSAKI KOUJI

IPC分类号： C22C29/08 ,  B22F3/10 ,  B22F5/00 ,  C22C1/05

CPC分类号： C22C29/04 ,  B22F3/1007 ,  B22F2005/001 ,  C04B35/5626 ,  C22C29/08 ,  Y10T428/12146 ,  Y10T428/26

摘要： A hard alloy (1) and a cutting tool are disclosed. The hard alloy (1) includes a hard phase and a binder phase (4). The hard phase includes: a main phase containing 50 - 70 mass% of WC, 15 - 30 mass% of TiCN, and 0 - 10 mass% of at least one kind of carbide, nitride or carbonitride of one or more non-W, non-Tiperiodic table Group 4, 5 or 6 metal; a WC phase (3); and a composite hard phase (2). The binder phase (4) includes 6 to 12 mass% of at least one of Co and Ni. The hard alloy (1) includes a surface portion (6) t a surface thereof, the surface portion (6) having a WC content higher than that of an internal portion (7) thereof. An average size of grains in the WC phase (3) in the surface portion (6) is larger than an average size of grains in the WC phase (3) in the internal portion (7).