Method of producing piston of internal combustion engine
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United States of America Patent
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-
Apr 26, 2016
Grant Date -
Aug 15, 2013
app pub date -
Jan 29, 2013
filing date -
Feb 15, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method of producing a piston includes a step of producing a naked piston having the skirt portion; a step of forming the skirt portion with streaks; a step of applying a skirt portion of the naked piston with a first film forming paint which is provided for producing the inner solid lubricant film; a step of heating the first film forming paint on the skirt portion at a temperature of 60° C. to 160° C. for a time less than 800 seconds to dry the same; a step of applying an outer surface of the dried first film forming paint with a second film forming paint which is provided for producing the outer solid lubricant film; and a step of heating the first and second film forming paints on the skirt portion at a temperature of 160° C. to 240° C. for a time of 15 minutes to 180 minutes.
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