Title:
CUTTING INSERT FOR DIFFICULT-TO-CUT MATERIALS
Document Type and Number:
WIPO Patent Application WO/2020/111658
Kind Code:
A1
Abstract:
The present invention relates to a PVD ceramic thin film coated cutting insert that can be suitably used for processing difficult-to-cut materials having low thermal conductivity, such as Inconel and titanium. The cutting insert according to the present invention comprises: a cemented carbide base material having an SMS value of 50-80% obtained by following [Equation 1], wherein, when any part of the cemented carbide base material is observed at 20,000X magnification with a scanning electron microscope, the area of a Co structure in which an area of 1.5 ㎛ × 1.5 ㎛ (width × length) of the Co structure enters is 10% or less of the total area of the Co structure; and a ceramic thin film having a thickness of 0.4-1.5 ㎛ formed on the cemented carbide base material. [Equation 1] SMS = saturation magnetization value of a sintered body × 100/TMS (TMS = mass ratio of 2010 × Co)
Inventors:
LEE SUNG-GU (KR)
KIM YONG-HYUN (KR)
KIM JUNG-WOOK (KR)
KIM YONG-HYUN (KR)
KIM JUNG-WOOK (KR)
Application Number:
PCT/KR2019/016025
Publication Date:
June 04, 2020
Filing Date:
November 21, 2019
Export Citation:
Assignee:
KORLOY INC (KR)
International Classes:
B23B27/14; B23C5/16
Foreign References:
| KR101792534B1 | 2017-11-02 | |||
| KR101859644B1 | 2018-05-18 | |||
| JP2013111711A | 2013-06-10 | |||
| KR20070110318A | 2007-11-16 | |||
| KR20150111476A | 2015-10-06 | |||
| US20120093597A1 | 2012-04-19 | |||
| US5188489A | 1993-02-23 |
Attorney, Agent or Firm:
IAM PATENT FIRM (KR)
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