Electric heating – Metal heating – Cutting or disintegrating
Reexamination Certificate
2011-07-19
2011-07-19
Evans, Geoffrey S (Department: 3742)
Electric heating
Metal heating
Cutting or disintegrating
Reexamination Certificate
active
07982158
ABSTRACT:
A method for manufacturing a die to be used for formation of honeycomb structure, the die having a die base having two faces, honeycomb-shaped slits5being formed in one face and back holes communicating with the slits5being formed in the other face in order to introduce a forming material thereinto, at least the slit portions of the die being made of a super had alloy,wherein slits5are formed by grinding or electric discharge machining, then a discharging electrode40having a square-shaped section is disposed near each crossing portion of slits5, and electric discharge machining is conducted from the upper side of slit5toward the depth direction of slit.
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Hironaga Masayuki
Koishikura Masaaki
Evans Geoffrey S
NGK Insulators Ltd.
Oliff & Berridg,e PLC
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