Cutter insert gum modification method and apparatus
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United States of America Patent
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Jul 22, 2008
Issued Date -
N/A
app pub date -
Mar 23, 2005
filing date -
Mar 23, 2004
priority date (Note) -
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Abstract
A method and apparatus for treating a cutter ring adapted to be used in tunnel boring operations; forming an initial cutter ring and heat treating the cutter ring prior to a laser client process; applying an alloy to the surface of the cutter ring adjacent to cutting elements by a laser cladding process whereby the cutting elements have insufficient heat transfer from the laser cutting process to reduce their hardness properties.
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