Patent · US Expired

Coated cutting insert and method of making it

US6062776A · kind A · utility

34Cited by

13References

16Claims

0Family size

Assignee

SANDVIK AB · SE

Inventors

Annika Sandman · Nacka, SE
Camilla Oden · Stockholm, SE
Jeanette Persson · Nacka, SE
Ake Ostlund · Stuvsta-Snättringe, SE

Key dates

Filing date	Sep 1, 1998
Grant date	May 16, 2000
Priority date	—
Expiry date	Sep 1, 2018

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24975
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A coated turning insert particularly useful for dry and wet machining in low and medium alloyed steels, stainless steels, with or without raw surface zones under severe conditions such as vibrations, long overhang and recutting of chips. The insert is characterized by a WC--Co cemented carbide with a low content of cubic carbides and a rather low W-alloyed binder phase and a coating including an innermost layer of TiC.sub.x N.sub.y O.sub.z with columnar grains and a top layer of TiN and an intermediate layer of .kappa.-Al.sub.2 O.sub.3. The layers are deposited by using CVD-methods.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.