Invention Grant
US08945250B2 Coated cutting tool insert for turning of steels 有权
用于车削的涂层刀具刀片

  • Patent Title: Coated cutting tool insert for turning of steels
  • Patent Title (中): 用于车削的涂层刀具刀片
  • Application No.: US13387436
    Application Date: 2010-06-29
  • Publication No.: US08945250B2
    Publication Date: 2015-02-03
  • Inventor: Hindrik Engstrom
  • Applicant: Hindrik Engstrom
  • Applicant Address: SE Fagersta
  • Assignee: Seco Tools AB
  • Current Assignee: Seco Tools AB
  • Current Assignee Address: SE Fagersta
  • Agency: Young & Thompson
  • Priority: SE0901037 20090727
  • International Application: PCT/SE2010/050742 WO 20100629
  • International Announcement: WO2011/014110 WO 20110203
  • Main IPC: B23B27/14
  • IPC: B23B27/14 C23C30/00 C23C16/02 C23C16/40
Coated cutting tool insert for turning of steels
Abstract:
A cutting tool insert for turning of hardened steels and tool steels includes a textured CVD α-Al2O3 coated cemented carbide body. The cemented carbide body has 4.0-7.0 wt-% Co and 0.25-0.50 wt-% Cr and an S-value of 0.68-0.88 and a coercivity (Hc) of 28-38 kA/m. The α-Al2O3 layer has a thickness ranging from 7 to 12 μm, is composed of columnar grains having a length/width ratio from 2 to 12 and is deposited on an MTCVD Ti(C,N) layer having a thickness from 4 to 12 μm. The alumina layer is characterised by a pronounced (006) growth texture.
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