Electrolysis: processes – compositions used therein – and methods – Electroforming or composition therefor – Roll – ring – or hollow body
Patent
1992-11-16
1994-07-12
Zimmerman, John
Electrolysis: processes, compositions used therein, and methods
Electroforming or composition therefor
Roll, ring, or hollow body
205 75, 156644, 156645, 156664, 291636, C25D 108, C25D 704, B23P 902, C23F 102
Patent
active
053285875
ABSTRACT:
A method of making a perforated tubular member by supporting a thin stainless tube (10) on a mandrel; machine engraving funnel-shaped holes ( 12 ) through the tube ( 10 ) and removing the machine-engraved tube from the mandrel. An alternate embodiment applies an intermediate layer (22) of aluminum to a core roll (20); applies a plurality of metallic layers (24) to the intermediate layer (22); machine engraves funnel-shaped holes (12) through the metallic layers (24); etches away the intermediate layers (22) and removes the machine-engraved tube. A third embodiment applies a separating-chemical layer (32) to a core roll (30); electro plates a plurality of metallic layers (34); machine engraves funnel-shaped holes (12); into the metallic layers ( 34 ); releases the resulting tube from the separating layer (32); and removes the resulting tube from the core roll.
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IR International, Inc.
Zimmerman John
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