Process for manufacturing a honeycomb body from heat-treated two-layered or multi-layered metal foils

Abstract

A process and a device are provided for manufacturing a honeycomb body from at least one metal foil constructed from at least two different layers, in particular from steel roll-bonded with aluminum. The metal foil is at least partly provided with a structure through the use of shaping, and is then layered or laminated or wound into honeycomb body. The metal foil is heat-treated with resistance heat generated within the foil before shaping. The heating is preferably carried out through the use of induction coils. In this way the capacity for cold shaping is increased and where required an oxide layer can be produced in a defined atmosphere. The invention reduces the energy and apparatus costs and permits economical manufacture of high-quality honeycomb bodies, in particular with microstructures increasing effectiveness.

Dependencies are inferred from the claim text.