The Goodyear & Tire Rubber Company

James Terry Lewis

Michael Gregory Zelin

Thomas Walter Starinshak

To achieve a drawn wire with a tensile strength defined by the equation of Y=Yexp(A&#x3b5;) wherein Y is the tensile strength in MPa (N/mm), Yis the strength of as patented wire, Ais a coefficient dependant on wire chemistry and drawing conditions, and &#x3b5;is a total true drawing strain, a high carbon steel wire contains 0.95 to 1.3% carbon and a combination of chromium, manganese, silicon, cobalt, niobium, and boron is processed such that the bright wire of an intermediate diameter has a structure void of micro cracks, patented to produce a desired microstructure with defined inter-lamella spacing and austenite grain, coated with brass, and fine drawn with an optimized die draft schedule at a specified true strain.

High strength, high carbon steel wire

Steel wire is drawn from an initial diameter to a desired final or intermediate diameter by the use of a non-linear tapered draft. During the non-linear tapered draft, the wire is drawn through a series of successive dies, reducing the wire diameter to a desired diameter, wherein the drawing strain at each successive die is gradually reduced. The drawing strain is based upon the actual strength of the steel at each die. The wire may also be subjected to a skin pass, reducing the wire by a diameter by less than 4%, following reduction of the wire to either the final or the intermediate diameter.

Growing community of inventors

Cuyahoga Falls, OH, United States of America

James Terry Lewis