CATALYTIC CONVERTER COMPONENT AND PROCESS FOR ITS MANUFACTURE
First Claim
1. A process for manufacturing a component for a catalytic converter, comprising taking a ceramic unit prepared by extruding green ceramic product through a die to form an extrusion having a honeycomb substrate structure having a plurality of tubular passages extending along the length of the extrusion, the passages bounded by walls dividing adjacent passages from one another, the unit being obtained by cutting off a length of the extrusion and curing and firing the length of extrusion, the process further comprising flowing insulation material from an end of the unit to form an internal thermally insulating barrier between a core zone of the unit and a radially outer zone of the unit, and curing the flowed insulating material using microwave radiation.
4 Assignments
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Accused Products
Abstract
In a process for manufacturing a catalytic converter component, a ceramic unit is used that has been prepared by extruding green ceramic product through a die to form an extrusion having a honeycomb substrate structure in which tubular passages extend along the extrusion, the passages bounded by walls dividing adjacent passages from one another. The unit is obtained by cutting off a length of the extrusion and curing and firing it. The process further comprises flowing insulation material from one end of the unit into selected ones of the elongate passages, the insulating material then being cured by microwave irradiation. The passages are selected so that the cured insulation material forms an internal thermal insulating barrier between a core zone of the unit and a radially outer zone of the unit.
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Citations
17 Claims
- 1. A process for manufacturing a component for a catalytic converter, comprising taking a ceramic unit prepared by extruding green ceramic product through a die to form an extrusion having a honeycomb substrate structure having a plurality of tubular passages extending along the length of the extrusion, the passages bounded by walls dividing adjacent passages from one another, the unit being obtained by cutting off a length of the extrusion and curing and firing the length of extrusion, the process further comprising flowing insulation material from an end of the unit to form an internal thermally insulating barrier between a core zone of the unit and a radially outer zone of the unit, and curing the flowed insulating material using microwave radiation.
- 11. A component for a catalytic converter comprising a unit of cured ceramic extrusion having a honeycomb substrate structure in which a plurality of passages extends along the unit, the passages bounded by walls dividing adjacent passages from one another, and an internal thermal insulation barrier between a core zone of the unit and a radially outer zone, the insulation material barrier composed of microwave radiation cured insulation material.
Specification