Induction heat-treating of threaded fasteners with a rotary conveyor
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United States of America Patent
Stats
-
Sep 16, 2003
Grant Date -
Dec 5, 2002
app pub date -
May 31, 2001
filing date -
May 31, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system and method for inductively heating and then quench hardening a portion of a workpiece, such as a several threads of a screw or bolt are disclosed. The system includes a conveyor system having a rotary conveyor for separating, aligning, and transporting each of the workpieces in aligned succession through an induction heater positioned about the rotary conveyor to heat-treat at least a portion of each of the workpieces. A sensor determines whether a workpiece is heat-treated to a minimum temperature and causes an ejector to separate heat-treated workpieces that have reached the minimum temperature from heat-treated workpieces that have failed to reach the minimum temperature. The separated workpieces are then quenched in a tank & separately removed automatically.
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Cited Art Landscape
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