CUTTER INSERT GUM MODIFICATION METHOD AND APPARATUS
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United States of America Patent
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N/A
Issued Date -
Dec 31, 2009
app pub date -
Jul 22, 2008
filing date -
Jun 26, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method and apparatus for treating a cutter ring adapted to be used in tunnel boring operations. An initial cutter member blank is formed and heat treats the cutter ring prior to a cladding process. An alloy is applied to the surface of the cutter blank adjacent to the cutting elements by the cladding process whereby the cutting elements have insufficient heat transfer from the cladding process to reduce their hardness properties, and in one form a fabric material defines the region for the exterior hard surface.
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