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. 08, 2001
Filed:
Sep. 12, 1997
Applicant:
Inventors:
Frank Kuster, Ratingen, DE;
Gerhardus Johannes Mulder, Essen, DE;
Donald MacRae, Benoni-North, ZA;
Michael Steinhorst, Essen, DE;
Assignee:
Elektro-Thermit GmbH, Essen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 2/300 ;
U.S. Cl.
CPC ...
B23K 2/300 ;
Abstract
The invention relates to a process for the aluminothermic welding of rails, the aluminothermically produced steel being poured into a refractory mold surrounding the rail ends which are to be joined, and alloying additives being contacted with that part of the steel which runs out of the reaction crucible and forms the weld in the rail head region, wherein the alloying with the alloying additives is carried out after the completion of the aluminothermic reaction and separation of the steel from the slag via the diverting plug in the mold, and the overflow in the is closed.