Heating furnace for press hardening process
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United States of America Patent
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Mar 27, 2012
Grant Date -
Mar 24, 2011
app pub date -
Nov 29, 2010
filing date -
Aug 28, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A heating furnace according to an embodiment of the present invention includes: a furnace body that has an inlet at the upper portion through which a steel sheet blank is inserted from a wound coil and an outlet at the lower portion through which the steel sheet blank is discharged, and has a cylindrical structure having a space for conveying the steel sheet blank; a conveyer that is spirally disposed on the inner circumference of the furnace body and sequentially conveys the steel sheet blank from the inlet at the upper portion and the outlet at the lower portion; and a clamping means that is disposed at one side of the conveyer and selectively clamps the steel sheet blank.
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