Heating furnace system for hot stamping
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United States of America Patent
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Apr 25, 2017
Grant Date -
Apr 8, 2010
app pub date -
Jul 1, 2009
filing date -
Oct 2, 2008
priority date (Note) -
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Abstract
In a heating furnace system for hot stamping, a first heating furnace has a plurality of pairs of upper and lower rolls arranged in a lengthwise direction thereof in order to transfer a steel plate, and high-frequency coils alternately arranged with the pairs of upper and lower rolls in the lengthwise direction thereof. A second heating furnace continuously transfers the steel plate from the first heating furnace during heating the steel plate at temperature of Ac3 or more, and has a plurality of transfer rollers arranged in a lengthwise direction thereof. The second heating furnace includes an electric furnace or a gas furnace. This heating furnace system can reduce space required for facilities by 50% or more compared to the related art.
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