Cover having a wear-resistant surface and method for the production thereof

US8979422B2 · kind B2 · utility

Assignee

• MeierGuss Limburg GmbH · DE

Inventors

• Manfred Künze · Westerburg, DE
• Stefan Weis · Rötteln, DE
• Peter Merkl · Limburg, DE

Key dates

• Filing date: Oct 12, 2010
• Grant date: Mar 17, 2015
• Expiry date: Oct 12, 2030

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22D27/18
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a cast-iron cover fitted with at least one traffic-bearing surface which in turn comprises at least segment-wise a wear-resistant layer constituted by chilling the cast iron. Preferably the wear-resistant layer exhibits a Brinell hardness larger than 275 HBW but less than 350 HBW. A method of the invention furthermore relates to manufacturing a cast-iron cover, first manufacturing a shaped body. Then an activation layer is made within the shaped body. Cast iron is poured-in in a way to be at least partly chilled at a contact surface with the activation layer.