Flow field regulation and control structure of large-scale aluminum extrusion on-line air-blast quenching device

Abstract

The invention discloses a flow field regulation and control structure of a large-scale aluminum extrusion on-line air-blast quenching device. The flow field regulation and control structure comprises a quenching air box body and a gas distributor, the quenching air box body comprises a top plate and two side plates, the two side plates are arranged oppositely, the two sides of the top plate are connected with one sides of the two side plates respectively, an air inlet is formed in the middle of the top plate, an air outlet is formed between the sides, away from the top plate, of the two side plates, an air guide plate is arranged at the air outlet to form a plurality of spraying nozzles, the gas distributor is mounted in the quenching air box body, is arranged between the two side plates and is positioned between the air inlet and the air outlet, the gas distributor comprises two supporting wall plates which are oppositely arranged, and gas splitter plates are arranged between the two supporting wall plates, are parallel to the top plate and are arranged at intervals. Therefore, the gas distributor can adjust the flow velocity of the air flow in the quenching air box body, so that each spraying nozzle on the quenching air box body obtains the air flow with relatively high flow velocity uniformity, and the maximum deviation of the flow velocity of the air flow in each spraying nozzle is lower than 5m / s.

Description

technical field [0001] The invention relates to the technical field of aluminum extrusion processing, in particular to a flow field control structure of a large-scale aluminum extrusion online air-cooled quenching device. Background technique [0002] In the process of aluminum extrusion processing, in order to ensure the quenching and cooling effect of large-scale aluminum extrusion products, the online quenching device usually adopts the combined action of water, mist, wind and other media, and adopts the principle of longitudinal segmented multi-nozzle arrangement in the structural layout. Under the condition of satisfying the requirement of cooling speed, the air flow rate of each nozzle has a high level of uniformity. [0003] Such as figure 1 with figure 2 As shown, in the existing large-scale aluminum extrusion on-line air-cooled quenching device, there is a large distance between the air inlet and the nozzles arranged in the longitudinal direction, especially the ...

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Problems solved by technology

[0003] like figure 1 and figure 2 As shown, in the existing large-scale aluminum extrusion on-line air-cooled quenching device, there is a large distance between the air inlet and the nozzles arranged in the longitudinal direction, especially the nozzles facing the air inlet, whose airflow velocity is much higher than that of the remote nozzles The air flow rate is low, resulting in a low uniformity of cooling speed along the longitudinal direction, which in turn affects the microstructure and mechanical properties of aluminum extrusion products, and in severe cases, deformation defects will occur, reducing the yield

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