Production method of base plate for disk drive, base plate for disk drive, and drive therewith
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United States of America Patent
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Jul 15, 2014
Issued Date -
Aug 30, 2012
app pub date -
Feb 22, 2012
filing date -
Feb 22, 2012
priority date (Note) -
Withdrawn
status (Latency Note)
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Abstract
A production method of a base plate for a disk drive made by aluminum die casting which can reduce scattering of particles and minimizes particle contamination is provided. The production method of a base plate for a disk drive includes a forming step for forming a base member by aluminum die casting, a coating step for coating the base member with a resin film, a machining step for removing a part of the resin film and a surface layer of the base member in order to expose the aluminum surface, a pretreatment step for immersing the base member with the exposed aluminum surface in a pretreatment solution containing no fluoride, and a metal film forming step for coating the exposed aluminum surface with a metal film.
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