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1. WO2020111658 - CUTTING INSERT FOR DIFFICULT-TO-CUT MATERIALS

Publication Number WO/2020/111658
Publication Date 04.06.2020
International Application No. PCT/KR2019/016025
International Filing Date 21.11.2019
IPC
B23B 27/14 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
27Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
14Cutting tools of which the bits or tips are of special material
B23C 5/16 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
CMILLING
5Milling-cutters
16characterised by physical features other than shape
CPC
B23B 27/14
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
27Tools for turning or boring machines
14Cutting tools of which the bits or tips ; or cutting inserts; are of special material
B23C 5/16
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
CMILLING
5Milling-cutters
16characterised by physical features other than shape
Applicants
  • 한국야금 주식회사 KORLOY INC. [KR]/[KR]
Inventors
  • 이성구 LEE, Sung-gu
  • 김용현 KIM, Yong-hyun
  • 김정욱 KIM, Jung-wook
Agents
  • 특허법인 아이엠 IAM PATENT FIRM
Priority Data
10-2018-015184630.11.2018KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) CUTTING INSERT FOR DIFFICULT-TO-CUT MATERIALS
(FR) INSERT DE COUPE POUR DES MATÉRIAUX DIFFICILES À DÉCOUPER
(KO) 난삭재용 절삭 인써트
Abstract
(EN)
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)
(FR)
La présente invention se rapporte à un insert de coupe revêtu de film mince de céramique PVD qui peut être utilisé de manière appropriée pour traiter des matériaux difficiles à découper ayant une faible conductivité thermique, tels que l'Inconel et le titane. L'insert de coupe selon la présente invention comprend : un matériau de base en carbure cémenté ayant une valeur de SMS comprise entre 50 et 80 % obtenue en suivant [équation 1], lorsqu'une partie quelconque du matériau de base en carbure cémenté est observée à un grossissement 20 000 X avec un microscope électronique à balayage, la surface d'une structure de Co dans laquelle une zone de 1,5 µm × 1,5 µm (largeur x longueur) de la structure de Co entre, étant égale ou inférieure à 10 % de la surface totale de la structure de Co ; et un film mince de céramique ayant une épaisseur comprise entre 0,4 et 1,5 µm formé sur le matériau de base en carbure cémenté. [Équation 1] SMS = valeur de magnétisation de saturation d'un corps fritté × 100/TMS (TMS = rapport de masse de 2010 × Co)
(KO)
본 발명은 인코넬이나 티타늄과 같이 열전도도가 낮은 난삭재의 가공에 적합하게 사용될 수 있는 PVD 세라믹 박막 코팅 절삭 인써트에 관한 것이다. 본 발명에 따른 절삭 인써트는, 임의의 부분을 주사전자현미경을 이용하여 2만배로 관찰하였을때, 1.5㎛×1.5㎛(가로×세로)의 면적이 내부에 들어가는 Co 조직의 면적이 전체 Co 조직 면적의 10% 이하이고, 하기 [식 1]에 의해 구해지는 SMS 값이 50 ~ 80%인 초경합금 모재와, 상기 초경합금 모재 상에 형성된 두께 0.4 ~ 1.5㎛의 세라믹 박막을 포함한다. [식 1] SMS = 소결체의 포화자화값×100/TMS (TMS = 2010×Co의 질량비)
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