High strength cast iron for cylinder liners

US9873928B2 · kind B2 · utility

Assignee

• Federal-Mogul LLC · US

Inventors

• Haron Gekonde · Beverly Hills, US
• John F. Miller · Ponca City, US
• Troy Kantola · Iron River, US
• Blair Matthew Jenness · Grosse Pointe Park, US
• Jeff Hunter · Missouri City, US

Key dates

• Filing date: Mar 15, 2016
• Grant date: Jan 23, 2018
• Expiry date: Mar 15, 2036

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01L23/562
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A cast iron having high strength, hardness, and thermal conductivity for a cylinder liner of an internal combustion engine is provided. The cast iron includes 3.2 wt. % to 3.8 wt. % carbon, 2.2 wt. % to 3.2 wt. % silicon, 0.5 wt. % to 1.3 wt. % copper, and at least 75.0 wt. % iron, based on the total weight of the cast iron. The cast iron further includes 0.01 wt. % to 0.5 wt. % manganese, 0.01 wt. % to 0.2 wt. % chromium, up to 0.3 wt. % phosphorous, up to 0.05 wt. % sulfur, up to 0.2 wt. % tin, and up to 0.1 wt. % magnesium, based on the total weight of the cast iron. Preferably, the cast iron is free of molybdenum, nickel, and vanadium. The cast iron is also heat treated and solidifies to achieve fully spheroidal graphite.