Process for the heat treatment of steel strips
AssigneeLinde Aktiengesellschaft
InventorsHerbert Eichelkraut, Hans-Joachim Heiler, Werner Högner, Fred Jindra, Rainhard Paul, Ola Ritzén
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Abstract
The invention provides a process for the heat treatment of steel products, in particular of steel strips or sheets, in which the product is brought from a starting temperature to a target temperature in a booster zone having at least one burner; the burner is operated with a fuel, in particular a fuel gas, and an oxygen-containing gas which contains more than 21% oxygen; and the product is brought into direct contact with the flame generated by the burner, the air ratio λ within the flame being set as a function of the starting temperature and/or the target temperature.
Claims9
A method for the heat treatment of steel products to be treated in a furnace, wherein a steel product in a booster zone having at least one burner is brought from a starting temperature to a target temperature, the at least one burner operating with a fuel and an oxygen-containing gas, the oxygen-containing gas including more than 21% oxygen and the steel product directly contacting a flame generated by the at least one burner, the method comprising:
- moving the steel product through the booster zone upstream of the furnace in a conveying direction to the furnace,
- providing the flame in a direction transverse to the conveying direction and directly contacting the steel product with the flame,
- surrounding the steel product over its entire periphery with the flame provided transversely to the conveying direction, and
- providing an air ratio λ within the flame set as a function of the starting temperature and/or the target temperature in the booster zone.
Dependencies are inferred from the claim text.