Continuous process for production of steel part with regions of different ductility

The interior of a furnace is partitioned into two longitudinally extending and transversely adjacent zones, and one of the zones is heated to a substantially higher treatment temperature than the other of the zones, which may or may not be heated. A steel workpiece is conveyed longitudinally through...

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Bibliographic Details
Main Authors KROGMEIER JURGEN, BOKE JOHANNES, REINHOLD PATRICK
Format Patent
LanguageEnglish
Published 21.02.2008
Subjects
BLASTING
CHEMISTRY
FURNACES
FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL
GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS
HEATING
KILNS
LIGHTING
MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS
MECHANICAL ENGINEERING
METALLURGY
METALLURGY OF IRON
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
OPEN SINTERING OR LIKE APPARATUS
OVENS
RETORTS
WEAPONS
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Summary:The interior of a furnace is partitioned into two longitudinally extending and transversely adjacent zones, and one of the zones is heated to a substantially higher treatment temperature than the other of the zones, which may or may not be heated. A steel workpiece is conveyed longitudinally through the furnace with a region of the workpiece moving exclusively through the one zone and another region of the workpiece moving exclusively through the other of the zones such that the regions are heated to different temperatures. The treatment temperature in one of the zone is above the AC1, point for the workpiece and the temperature in the other of the zones is close to or below the AC1, point for the workpiece.
Bibliography:Application Number: US20070894980