Invention Grant
- Patent Title: Coated cutting tool insert for turning of steels
- Patent Title (中): 用于车削的涂层刀具刀片
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Application No.: US13387436Application Date: 2010-06-29
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Publication No.: US08945250B2Publication 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

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.
Public/Granted literature
- US20120144965A1 COATED CUTTING TOOL INSERT FOR TURNING OF STEELS Public/Granted day:2012-06-14
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