Strip flotation furnace

Abstract

The present invention relates to a strip flotation furnace (100) for controlling the temperature of a metal strip (101). The strip flotation furnace (100) has a flotation nozzle bar (110), which extends through the strip flotation furnace (100) transversely to a strip running direction (102) of the metal strip (101), wherein the flotation nozzle bar (110) has two opposing first rows of flotation nozzles (111, which are spaced apart by a central region (112) of the flotation nozzle bar (110). The rows of flotation nozzles (111) are set up in such a way that corresponding flotation nozzle jets (113), with a directional component in the direction of the central region (112), can be generated in order to provide pressure cushioning for guiding the metal strip (101). The strip flotation furnace (100) also has a temperature-control nozzle bar (120), which extends transversely to a strip running direction (102) of the metal strip (101) and is spaced apart from the flotation nozzle bar (110) along the strip running direction (102), wherein the temperature-control nozzle bar (120) has two additional opposing rows of temperature-control nozzles (121), which are spaced apart by an additional central region (122) of the temperature-control nozzle bar (120). The rows of temperature-control nozzles (121) are set up in such a way that corresponding temperature-control nozzle jets (123), with a directional component in the opposite direction to the additional central region (122), can be generated.

Description

technical field [0001] The invention relates to a floating belt furnace and a method for operating a floating belt furnace. Background technique [0002] Floating belt furnaces are used for the targeted heating and cooling of metal belts. In floating belt furnaces, the metal belt is guided floating through the individual temperature zones. This enables the metal strip to be guided through the corresponding floating belt furnace without contact. [0003] The floating state of the metal strip is created by the air nozzle pad. Here compressed air flows onto the metal strip to adjust the floating state of the metal strip. At the same time, the metal strip is guided through the floating belt furnace in the direction of strip travel. [0004] The temperature of the compressed air is adjusted accordingly in order to achieve the desired tempering of the metal strip. Precise temperature regulation of the metal strip here is often difficult and weary. Contents of the invention ...

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