| 摘要 |
<p>#CMT# #/CMT# In a process to manufacture an automotive exhaust system unit e.g. filter or catalytic converter with a honeycomb structure, the structure is made as a metal fiber fleece. In the process loose fibers are released onto a moving belt to form a layer where inter-fiber contact points are welded to form an integral fleece layer with selected fleece properties. The fleece is then converted to honeycomb format and hard soldered. #CMT# : #/CMT# The process takes place in conditions not conducive to oxidation. Metal wire is chopped, classified, selected for use and returned for re-processing as necessary. Fibers are mixed and cleaned prior to release as a layer (4) onto the conveyer with an additive and joined by welding in the presence of inert gas prior to compression and testing of the weld joins. The resulting fleece is compressed to honeycomb format within a metal foil incorporating an electrode and a perforated tube. Also claimed are a commensurate honeycomb panel and its use as an automotive exhaust filter. #CMT#USE : #/CMT# Process to manufacture automotive exhaust gas filter. #CMT#ADVANTAGE : #/CMT# The filter process has a lower reject rate than prior art. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows the sequence of operations for the production of a suitable filter fleece. 2 : fleece 3 : fibers 4 : fiber layer 5 : underlay 17 : fiber sorting station 18 : distributor 19 : welding station 35 : cutting station 36 : wire feed 37 : weighing station 38 : shaping station 39 : fiber return 40 : conveyer belt.</p> |
