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:
Jun. 04, 1991
Filed:
Feb. 07, 1990
Sadi Karagoz, Yildiz-Istanbul, TR;
Bruno Hribernik, Bruck an der Mur, AT;
Johann Stamberger, Kapfenberg, AT;
Josef Puber, Wimpassing, AT;
Franz Jeglitsch, Leoben, AT;
Hellmut Fischmeister, Stuttgart 1, AT;
Franz Matzer, Leoben, AT;
Claus-Dieter Locker, Leoben, AT;
Elfriede Kudielka, Leoben, AT;
Heimo Jager, Bruck an der Mur, AT;
Boehler Ges m.b.H., Kapfenberg, AT;
Abstract
The invention relates to high speed tool steels produced by powder metallurgy; to parts subject to heavy wear which are fabricated from such steel; and to a method of such fabrication. According to the invention, the part subject to heavy wear contains Nb in the amount of 2-15 wt. % and V in the amount of 1-4 wt. %, and further contains metal carbides in the amount of 10-30 vol. %; and that the lower limit of the carbon content is given by the formula