Methods for automated application of hardfacing material to drill bits
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United States of America Patent
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Mar 3, 2015
Grant Date -
Oct 17, 2013
app pub date -
May 28, 2013
filing date -
Oct 23, 2008
priority date (Note) -
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Abstract
Methods for depositing hardfacing material on portions of drill bits comprise providing a vertically oriented plasma transfer arc torch secured to a positioner having controllable movement in a substantially vertical plane. A rolling cutter is secured to a chuck mounted on an articulated arm of a robot. A surface of a tooth of the rolling cutter is positioned in a substantially perpendicular relationship beneath the torch. The torch is oscillated along a substantially horizontal axis. The rolling cutter is moved with the articulated arm of the robot in a plane beneath the oscillating torch. A hardfacing material is deposited on the tooth of the rolling cutter.
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