Production of securely-bonded metallic honeycomb catalyst substrate from structured metal sheet

摘要

The method makes a metallic honeycomb (1) comprising wound, layered or looped configurations of structured-sheet layers (2, 3). A gas-permeable hard solder sheet is laid on the end faces (4) of the honeycomb. In this context, hard solder is a high-temperature-melting composition, preferably of nickel with a small proportion of carbon, analogous to a brazing alloy. Alternatively it is carbon and/or chromium free, and contains boron and/or silicon. In region(s) of the sheet layers, a hard soldering process is undertaken. Also claimed is the solder sheet to make the metallic honeycomb described.