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:
Jan. 05, 1988
Filed:
Jan. 24, 1986
Applicant:
Inventors:
Chang-Shung Chai, South Euclid, OH (US);
Jon McCollister, Mentor, OH (US);
Assignee:
The Lincoln Electric Company, Cleveland, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C / ; B23K / ;
U.S. Cl.
CPC ...
420103 ; 148 24 ; 2191 / ; 21914522 ; 21914623/146.24 ; 21914641 ; 420104 ; 420126 ; 420128 ;
Abstract
Weld bead analysis and electrode capable of producing same, which in multiple pass welding of thick steel plates, results in fine grain structure and high impact strength. The analysis includes as necessary ingredients, titanium, nitrogen and chromiumwith a maximum limitation on auminum, if present. The electrode contains titanium and chromium. The welding is in air and the titanium picks up nitrogen from the air and carries it into the weld bead as micro particulates of titanium nitride, which forms nucleation points for commencing fine grain growth.