Die-casting mold core
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United States of America Patent
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-
Jul 22, 2008
Grant Date -
May 3, 2007
app pub date -
Aug 23, 2006
filing date -
Oct 27, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An exemplary die-casting mold core includes a mold body, an intermediate layer and a diamond-like carbon film. The mold body is made of a steel alloy containing carbon, chromium, manganese, silicon, vanadium, and iron. A molar percentage of hydrogen in the diamond-like carbon film is in a range from 2% to 25%. The die-casting mold core has excellent mechanical hardness, good corrosion resistance, good wear resistance, long lifetime and ease of separation.
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