Extrusion die and method for producing extrusion die for forming

Details Extrusion die and method for producing extrusion die for forming Extrusion die and method for producing extrusion die for forming

1981-02-18

1982-10-19

Thurlow, Jeffery R.

Plastic article or earthenware shaping or treating: apparatus

Means providing a shaping orifice

29558, 29DIG26, 264177R, 2642091, 2642098, 425197, 425380, 425382R, 425462, 425467, B29F 304

Patent

active

043548202

ABSTRACT:
Method for producing an extrusion die and resulting die for making a honeycomb structure provided with axially extending separate passages. Feed passages and interconnected pooling slots are formed in a metallic die body respectively from opposed end surfaces so as to be communicated with each other. A metallic plate is bonded as by brazing to the end surface provided with the interconnected pooling slots and formed in that plate to communicate with the pooling slots are narrower interconnected extrusion slots having the same shape and size as those of walls of the desired honeycomb structure. Before securing the metal plate to the end surface, holes are made either in the plate or in the end surface, or both, to increase the bonding contact area therebetween.

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