Online aluminum alloy plate quenching process and equipment

Abstract

The invention belongs to the technical field of metal machining, and in particular, relates to an online aluminum alloy plate quenching process. The process comprises the steps of: (A) rolling; (B) spraying preparation: a rolled aluminum alloy plate is fed in an inlet of a spraying area through a conveying device at a speed of 160-200 m / min; and meanwhile, the conveying device in the spraying area is started to control the speed within 9-11 m / s; (C) rapid spraying: the upper and lower surfaces of the aluminum alloy plate are sprayed at the same time; the spraying water pressure of the upper surface is controlled as 3.8 kg; and the spraying water pressure of the lower surface is controlled as 3 / 5 kg; and (D) postcooling: the aluminum alloy plate is reversely fed in the spraying area; and meanwhile, the spraying water pressure of the upper and lower surfaces is reduced to perform postcooling on raw materials. The process needs no secondary heating; a rolling process is directly adjusted online; the afterheat of the plate is maintained to quickly feed in quenching equipment to finish the quenching process; the energy consumption waste caused by secondary heating is prevented; the quenching cost is greatly reduced; and the quenching solid solution performance of the product is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of metal processing, and in particular relates to an on-line quenching process and equipment for an aluminum alloy plate. Background technique [0002] Heat treatment furnaces are widely used in the field of materials, and the role of heat treatment in the field of materials will become more and more prominent in the future, especially in the field of new materials such as alloy aluminum plates. Quenching heat treatment is more and more valued by the industry and users. The traditional quenching of aluminum alloy plate is nothing more than offline trolley salt bath, air quenching or offline roller bottom water quenching. [0003] Traditional roller hearth quenching needs to wait for the plate to cool down after rolling, and then enter the heating zone of the roller hearth furnace offline for secondary heating to 500-530 degrees, and then quickly enter the water-cooled strong quenching zone to achieve the eff...

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Problems solved by technology

[0004] However, there are obvious deficiencies in the above-mentioned quenching process. The temperature of the hot-rolled aluminum alloy profile itself is very high (above 440°C), but this part of the heat is not fully utilized, but is naturally lost to the surrounding environment. The profile is cooled to room temperature, and before the subsequent quenching step, it is necessary to put the aluminum alloy profile at room temperature into a vertical air furnace for reheating, heating, and heat preservation to reach the required quenching temperature, so this quenching process consumes a lot of energy High, high ambient temperature, harsh operating environment, and large investment in supporting equipment

This results in high quenching costs and is not conducive to ensuring the quenching and solid solution properties of the product

In addition, this quenching process is intermittent production, aluminum alloy profiles cannot be continuously quenched online, and the production cycle is long, generally taking 2-3 days

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