EXHAUST-TREATMENT CORE APPARATUS AND METHOD OF MAKING

摘要

The present disclosure relates to a method for making an exhaust treatment device having a substrate 22 positioned within a casing 24. The casing includes a primary wall 26 that surrounds the substrate 22 and end flanges 28 that extend inwardly from the primary wall 26. The end flanges 28 oppose ends of the substrate and assist in retaining the substrate within the casing. The method includes providing the casing 24 with the flanges 28 . The method also includes positioning the substrate within the casing after casing has been provided with the flanges. A device having a bead structure 43 positioned between a casing 24 and an exhaust structure 27 is also disclosed .