Screen bar, bar screen and method for producing a screen bar

US10124372B2 · kind B2 · utility

Assignees

• ThyssenKrupp Steel Europe AG · DE
• THYSSENKRUPP INDUSTRIAL SOLUTIONS AG · DE

Inventors

• Natasja Linke · Kamp-Lintfort, DE
• Andreas Kern · Roth, DE
• Hans-Joachim Tschersich · Dorsten, DE
• Guido Leuschen · Bielefeld, DE

Key dates

• Filing date: Jun 13, 2014
• Grant date: Nov 13, 2018
• Expiry date: Jan 16, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C38/54
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A screen bar for a bar screen may comprise a steel composite sheet having at least three steel layers: a top layer, a core layer, and a bottom layer. The top, core, and bottom steel layers may be interconnected by roll cladding in a non-releasable manner. In some examples, the core steel layer may have a higher deformability than the top steel layer and the bottom steel layer. Likewise, the top steel layer and the bottom steel layer may have higher hardnesses than the core steel layer. Such screen bars have extended service life and can be manufactured more cost effectively, amongst other benefits. Methods for manufacturing such screen bars may involve a variety of steps including hot rolling and/or heat-treating.