Device and method for heating a metal material
A technology of metal materials and heating devices, applied in combustion methods, lighting and heating equipment, heat treatment furnaces, etc., can solve problems such as increased design costs and maintenance costs, expensive, and inability to adjust the width
Inactive Publication Date: 2011-11-23
AGA AB
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- Description
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- Application Information
AI Technical Summary
Problems solved by technology
However, if a ramp with multiple burners is used, it is difficult to achieve satisfactory accuracy with said adjustment, as existing adjustments involve dimming and / or switching off individual burners
Therefore, the width cannot be adjusted in smaller increments than the distance between the two burners
[0006] Also, each additional burner adds design and maintenance costs, which is why ramps with multiple burners are relatively expensive
Employing multiple burners requires many supply lines for fuel and oxidant, and a more complex and thus more expensive valve and control system
Method used
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Embodiment Construction
[0014] figure 1 A conventional industrial furnace 1 is schematically shown. The furnace 1 can be used for continuous heating of elongate metal material or for batch operation.
[0015] The invention can also be used where the material is not heated in an industrial furnace. In these cases, for example, free-burning configurations or burner configurations including radiation protection may be used.
[0016] The furnace 1 contains a metallic material 2 which is fed through the furnace 1 during heating. The metallic material 2 may be in the form of, for example, an elongated plate, strip or slab, but also in other forms. In these cases, the metal material 2 may have different dimensions, for example, a width of 40-150 cm and a thickness of 1-500 mm, preferably a thickness of 1-50 mm. The length of the metallic material 2 can vary between short segments and an elongated form for continuous operation. Other forms of material are also contemplated. Furthermore, the invention c...
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Abstract
Device for heating a metal material, comprising an elongated DFI burner device, arranged to be driven with gaseous oxidant and gaseous fuel and to be displaceable and longitudinally arranged with respect to the metal material. The device has supply devices for fuel and oxidant. The burner device comprises longitudinal, tubular vessels for fuel and for oxidant, arranged in parallel to one another and relative to the surface of the metal material. The vessels each have one or more openings arranged along the vessel, through which the fuel and oxidant are arranged to flow out and then converge in an ignition zone outside the respective vessels, where a flame is generated. The respective supply devices are arranged by means of a regulator to keep the pressure constant throughout the vessel inquestion during operation. Each vessel has a longitudinally displaceable piston for controlling the longitudinal extension of the flame in the longitudinal direction of the vessels.
Description
technical field [0001] The invention relates to a device and a method for heating metallic materials, eg in industrial furnaces. More particularly, the invention relates to heating by means of the so-called DFI (Direct Flame Impingement) technique. In other words, a combustion flame that directly impacts the surface of the metal material is used, thereby efficiently transferring thermal energy to the metal material. Background technique [0002] When the metal material is heated using the DFI technique, the contaminants are removed from the metal material surface so that the metal material surface has a satisfactory surface structure for subsequent processing stages. [0003] In such DFI heating of metallic materials, the flame is generally allowed to move over the surface of the metallic material. In continuous operation, the metallic material may, for example, be conveyed through the furnace and thereby passed over one or more stationary DFI burners and heated. Sometime...
Claims
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IPC IPC(8): C21D1/52C21D1/08C21D11/00C21D9/00C21D9/46C21D9/52C21D9/56F23D14/20F23D14/56F23D14/58F27B9/36F27D23/00F27D99/00
CPCF23D14/58C21D9/46C21D1/52F27B9/36F23D14/56F27D99/0033F23D14/20
Inventor C-L·阿泽尔松O·里森A·隆内特M·埃克布隆姆
Owner AGA AB