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:
Feb. 19, 2002
Filed:
Jul. 18, 2000
Applicant:
Inventors:
Johan Arvidsson, Nyhamnsläge, SE;
Ola Eriksson, Höganäs, SE;
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
C22C 1/04 ;
U.S. Cl.
CPC ...
C22C 1/04 ;
Abstract
The present invention concerns a method of preparing a sintered product having a tensile strength 750 MPa comprising the steps of compacting a water-atomised, annealed iron-based powder comprising, by weight %, Cr 2.5-3.5, Mo 0.3-0.7, Mn 0.09-0.3, O <0.2, C<0.01 the balance being iron and, an amount of not more than 1%, inevitable impurities, at a pressure of at least 600 MPa and subjecting the compacted body to sintering at a temperature of at most 1220° C. The invention also concerns the annealed powder used in the method as well as the sintered products.