BRAKE DRUM FOR VEHICLE AND METHOD OF MANUFACTURING THE SAME
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United States of America Patent
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Issued Date -
Nov 12, 2009
app pub date -
Dec 2, 2008
filing date -
May 8, 2008
priority date (Note) -
Abandoned
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Abstract
Disclosed herein is a composition for a vehicle brake drum, including 3.2˜4.2 wt % of carbon, 1.5˜2.8 wt % of silicon, 0.6˜0.9 wt % of manganese, 0.1 wt % or less of sulfur, 0.1˜0.3 wt % of chromium, 0.2˜0.5 wt % of molybdenum, 5˜10 wt % of carbon nanotubes, and a balance of cast iron. The vehicle brake drum is thermally coated with carbon nanotubes. The vehicle brake drum has excellent wear resistance and provides stable braking force.
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