Title:
SHEET METAL MEMBER, METHOD OF MANUFACTURING SAME, AND HEAT RADIATION PLATE
Document Type and Number:
WIPO Patent Application WO/1998/056526
Kind Code:
A1
Abstract:
A method of manufacturing a sheet metal member, comprising sintering a green compact in the form of a sheet having thin wall portions and thick wall portions to provide a sintered compact and then repressing the sintered compact, wherein an adjustment is made so that density difference between the thin wall portions and the thick wall portions of the sintered compact is within a range of � 1.5 %. Accordingly, improved precision in flatness combined with forming effected by sintering reduces the amount of strain remaining inside the compact and significantly suppresses deformation due to influences of heat, thus making the sheet metal member promising for a heat radiation plate.
Inventors:
MAWATARI OSAMU (JP)
ICHIKAWA JUNICHI (JP)
ISHIJIMA ZENZO (JP)
SHIKATA HIDEO (JP)
ICHIKAWA JUNICHI (JP)
ISHIJIMA ZENZO (JP)
SHIKATA HIDEO (JP)
Application Number:
PCT/JP1998/002591
Publication Date:
December 17, 1998
Filing Date:
June 12, 1998
Export Citation:
Assignee:
HITACHI POWDERED METALS (JP)
MAWATARI OSAMU (JP)
ICHIKAWA JUNICHI (JP)
ISHIJIMA ZENZO (JP)
SHIKATA HIDEO (JP)
MAWATARI OSAMU (JP)
ICHIKAWA JUNICHI (JP)
ISHIJIMA ZENZO (JP)
SHIKATA HIDEO (JP)
International Classes:
B22F5/00; F28F3/04; H01L21/48; H01L23/367; H01L23/373; (IPC1-7): B22F3/24; B22F5/00; H01L23/36
Foreign References:
| JPH07153878A | 1995-06-16 | |||
| JPH09217102A | 1997-08-19 |
Attorney, Agent or Firm:
Suenari, Mikio (6-14 Kyobashi 2-chom, Chuo-ku Tokyo, JP)
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