Multilayer coated cemented carbide cutting insert

Details Multilayer coated cemented carbide cutting insert Multilayer coated cemented carbide cutting insert

1990-01-08

1991-01-15

Schmidt, Frederick R.

Cutters, for shaping

Comprising tool of specific chemical composition

51295, 51309, 427249, 428698, B23B 2714

Patent

active

049849409

ABSTRACT:
An indexable metalcutting insert is provided having a cobalt cemented tungsten carbide substrate wit a multilayer refractory coating thereon. The substrate has a cobalt content of 6.1 to 6.5 weight percent and is characterized by a hardness of 90.8 to 91.6 Rockwell A and a magnetic coercive force of 110 to 180 oerstads. The coating contains at least a plurality of alumina layers which are separated from and bonded to each other by a group IVB metal nitride, such as titanium nitride, and which are bonded to the substrate by a backing layer of 5 to 8 .mu. in thickness, composed of a carbide and/or carbonitride of titanium, zirconium and/or hafnium.

REFERENCES:
patent: Re31526 (1984-02-01), Smith et al.
patent: 4441894 (1984-04-01), Sarin et al.
patent: 4449989 (1984-05-01), Sarin et al.
patent: 4670024 (1987-06-01), Bhat et al.
patent: 4776863 (1988-10-01), van den Berg et al.
patent: 4830886 (1989-05-01), Cho et al.
patent: 4842937 (1989-06-01), Meyer et al.
patent: 4843039 (1989-06-01), Akesson et al.
Schintlmeister et al., "Cutting Tool Materials Coated by Vapour Deposition," Wear 100 (1984), pp. 153-169.
Dreyer et al., "Development and Tool Life Behavior of Super-Wear-Resistant Multilayer Coatings on Harometals," Metals Society (Book 278), London, England (1982), pp. 112-117.

Affiliated with

Also associated with

Rating

Multilayer coated cemented carbide cutting insert does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multilayer coated cemented carbide cutting insert, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multilayer coated cemented carbide cutting insert will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-52402