Method for brazing a metallic honeycomb body for exhaust gas treatment and apparatus for carrying out the method
AssigneeEMITEC Gesellschaft fuer Emissionstechnologie mbH
InventorsHans-Peter Caspar, Hubertus Kotthoff, Jörg Gutowski, Dietmar Chauchet, Ludwig Wieres
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Abstract
A method for brazing a metallic honeycomb body (1) for exhaust gas treatment, includes at least: a) pretreatment of a honeycomb body (1) at a temperature above 400° C.; b) cooling the honeycomb body (1); c) brazing the honeycomb body (1) at a temperature in a range of from 1050° C. to 1100° C. under atmospheric pressure; and d) cooling the honeycomb body (1). A suitable apparatus for carrying out the method is also provided.
Claims20
A method for brazing a metallic honeycomb body for exhaust gas treatment, the method comprising the following steps carried out in a continuous-flow process:
- a) pretreating a honeycomb body at a temperature above 400° C. in a first furnace to remove water and grease from the honeycomb body in a cleaning step;
- b) cooling the honeycomb body;
- c) brazing the honeycomb body in a second furnace at a temperature in a range of from 1050° C. to 1100° C. under atmospheric pressure;
- d) cooling the honeycomb body;
- and
- carrying out permanent process gas scavenging at least during steps a) and c).
Dependencies are inferred from the claim text.