Title:
【発明の名称】機械彫刻した継目なし管の製造方法
Document Type and Number:
Japanese Patent JP3271979
Kind Code:
B2
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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Inventors:
Huensk, Willi
Application Number:
JP51246394A
Publication Date:
April 08, 2002
Filing Date:
November 16, 1993
Export Citation:
Assignee:
IR International Incorporated
International Classes:
B21C37/15; B21D22/02; B23P15/00; B26F1/00; C23F1/00; C25D1/02; C25D1/08; C25D1/20; C25D7/04; B21B23/00; B21H7/00; B21H7/14; (IPC1-7): B21D22/02; B21D28/28; C23F1/00
Domestic Patent References:
| JP4178226A | ||||
| JP568263A | ||||
| JP6286190A | ||||
| JP5935696A | ||||
| JP472916B2 | ||||
| JP605679B1 |
Other References:
【文献】米国特許4214945(US,A)
【文献】米国特許3763030(US,A)
【文献】米国特許3763030(US,A)
Attorney, Agent or Firm:
Heikichi Odashima