The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 1992
Filed:
Nov. 14, 1990
Applicant:
Inventors:
Assignee:
Sandvik AB, Sandviken, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C / ; C22C / ; B22F / ;
U.S. Cl.
CPC ...
75233 ; 75232 ; 75234 ; 75235 ; 75236 ; 75237 ; 75238 ; 75239 ; 75240 ; 75241 ; 75242 ; 75244 ; 419 13 ; 419 14 ; 419 15 ; 419 16 ; 419 17 ; 419 18 ; 419 19 ; 419 32 ; 419 38 ; 419 39 ;
Abstract
A cutting insert of a sintered carbonitride alloy and with a complicated geometry, the insert having improved efficiency. This is obtained by giving the powder non-uniform compaction during pressing of the powder into a press-body so that the ultimate working edges will have a higher relative density than the surrounding, more 'supporting' material in the press-body. By these means are often obtained surface defects in the form of cracks because of dissolved strains during the sintering.