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:
Sep. 30, 1980
Filed:
Nov. 08, 1978
Horst Seifahrt, Lausanne, CH;
Castolin S.A., St. Sulpice, CH;
Abstract
A coated electrode suitable for the welding of gray cast iron is provided comprising a core of iron or iron alloy with a coating thereon of a composition which on the dry weight basis contains 5% to 10% of a binder of an alkali metal silicate, 25% to 50% by weight of ferrovanadium containing 40% to 85% vanadium, 20% to 40% powdered iron, 15% to 20% BaCO.sub.3, 10% to 20% CaF.sub.2, and 1% to 3% ferrosilicon containing 30% to 80% silicon. It is preferred in welding a gray cast iron part to so arrange the electrode relative to the part so that the arc thereof is directed at an angle between 30.degree. and 60.degree. to the substrate surface so that the heat of the arc is not applied directly to the surface of the cast iron substrate but is absorbed substantially by the weld bead formed during welding.