CN-121294798-B - On-line quenching device and method for deep-cavity aluminum alloy profile

CN121294798BCN 121294798 BCN121294798 BCN 121294798BCN-121294798-B

Abstract

The application discloses an online quenching device and method for deep-cavity aluminum alloy profiles, wherein the online quenching device comprises a quenching tank and a spraying disturbance component, the spraying disturbance component comprises a water pipe and a plurality of spray heads, the water pipe is fixed on the bottom wall of the quenching tank, is arranged along the moving direction of the deep-cavity aluminum alloy profiles and is positioned at the water inlet end of the quenching tank, and the spray heads are arranged on the outer wall of the water pipe and are arranged along the extending direction of the water pipe and used for disturbing water flow in the quenching tank. According to the on-line quenching device, the water pipe is arranged on the bottom wall of the quenching tank, the plurality of spray heads are arranged in the extending direction of the water pipe, the spray heads spray towards the inner wall direction of the deep cavity of the aluminum alloy section, water flow is disturbed forcefully, the boiling effect and flow field stagnation in the deep cavity can be effectively broken, and the inner cooling and the outer cooling are synchronous and uniform. The on-line quenching device is simple in structure, the reliability of the fixed movable water pipe is higher, and the integrated transformation on the existing horizontal through type quenching production line is facilitated.

Inventors

HUANG YUANCHUN
SONG WENBO
LIU YU
FAN XI

Assignees

中南大学

Dates

Publication Date: 20260505
Application Date: 20251209

Claims (5)

1. The on-line quenching device for the deep cavity aluminum alloy section is characterized by comprising a quenching tank and a spraying disturbance component, wherein the spraying disturbance component comprises a water pipe and a plurality of spray heads, the water pipe is fixed on the bottom wall of the quenching tank along the moving direction of the deep cavity aluminum alloy section so as to be positioned in a cavity surrounded by the deep cavity aluminum alloy section and the bottom wall and positioned at the water inlet end of the quenching tank, and the spray heads are arranged on the outer wall of the water pipe and are arranged along the extending direction of the water pipe so as to disturb water flow in the quenching tank; the spray heads comprise a first spray head and a second spray head, wherein a plurality of first spray heads are arranged at the top of the water pipe, and a plurality of second spray heads are arranged at two opposite side parts of the water pipe; The included angle between the spraying direction of the second spray head and the moving direction of the deep cavity aluminum alloy section bar is 30-45 degrees, and the included angle between the spraying direction of the first spray head and the moving direction of the deep cavity aluminum alloy section bar is 15-30 degrees; the on-line quenching device further comprises a plurality of ultrasonic transducers which are respectively arranged on the outer side wall of the quenching tank.
2. The deep cavity aluminum alloy profile online quenching device according to claim 1, wherein the length of the water pipe is 1-2 m.
3. The deep cavity aluminum alloy profile online quenching device according to claim 1, wherein a plurality of ultrasonic transducers are uniformly and symmetrically arranged on two outer side walls of the quenching tank.
4. An online quenching method of a deep cavity aluminum alloy section bar is characterized by comprising the following steps that the deep cavity aluminum alloy section bar extruded by an extruder enters a quenching tank of an online quenching device, the deep cavity aluminum alloy section bar passes through a spray disturbance assembly on the bottom wall of the quenching tank, the spray disturbance assembly is located in a cavity surrounded by the deep cavity aluminum alloy section bar and the bottom wall, water is introduced into a water introducing pipe of the spray disturbance assembly, a plurality of spray heads on the water introducing pipe spray water used for disturbing water flow in the quenching tank towards the inner wall direction of the cavity of the deep cavity aluminum alloy section bar, an included angle between the spray directions of a plurality of second spray heads on two opposite sides of the water introducing pipe and the moving direction of the deep cavity aluminum alloy section bar is 30-45 degrees, and an included angle between the spray directions of a plurality of first spray heads on the top of the water introducing pipe and the moving direction of the deep cavity aluminum alloy section bar is 15-30 degrees.
5. The on-line quenching method of the deep cavity aluminum alloy section bar according to claim 4, further comprising the step of opening ultrasonic transducers on two outer side walls of the quenching tank after the deep cavity aluminum alloy section bar enters the quenching tank, and emitting ultrasonic waves of 20 kHz-40 kHz.

Description

On-line quenching device and method for deep-cavity aluminum alloy profile Technical Field The application relates to the technical field of aluminum alloy profile quenching, in particular to an on-line quenching device and method for a deep cavity aluminum alloy profile. Background The high-strength aluminum alloy section bar is a key structural member in the fields of aerospace, new energy automobiles and the like, and the excellent strength performance of the high-strength aluminum alloy section bar depends on a heat treatment process to a great extent. However, the components, particularly the deep cavity aluminum alloy section, are extremely easy to generate deformation problems such as warping, twisting and the like in the quenching process, so that the yield is low, the subsequent straightening cost is high, and even the product is scrapped. The deformation root of the aluminum alloy profile is the large, non-uniform thermal stress during quenching, which is amplified for deep cavity profiles. The technical proposal of the prior art can not solve the deformation problem caused by serious lag and uneven cooling of the inner cavity during the on-line quenching of the deep cavity aluminum alloy section. Disclosure of Invention The invention provides an on-line quenching device and method for a deep cavity aluminum alloy profile, which are used for solving the technical problem that the deep cavity aluminum alloy profile is extremely easy to deform in the quenching process in the prior art. In order to achieve the above purpose, the technical scheme provided by the invention is as follows: The invention provides an on-line quenching device for deep cavity aluminum alloy sections, which comprises a quenching tank and a spraying disturbance component, wherein the spraying disturbance component comprises a water pipe and a plurality of spray heads, the water pipe is fixed on the bottom wall of the quenching tank, is arranged along the moving direction of the deep cavity aluminum alloy sections and is positioned at the water inlet end of the quenching tank, and the spray heads are arranged on the outer wall of the water pipe and are arranged along the extending direction of the water pipe and are used for disturbing water flow in the quenching tank. Further, the spray head comprises a first spray head and a second spray head, a plurality of first spray heads are arranged at the top of the water pipe, and a plurality of second spray heads are arranged at two opposite side parts of the water pipe. Further, an included angle between the spraying direction of the first spray head and the moving direction of the deep cavity aluminum alloy section is 15-30 degrees. Further, a plurality of second spray heads are symmetrically arranged at two side parts of the water pipe. Further, an included angle between the spraying direction of the second spray head and the moving direction of the deep cavity aluminum alloy section is 30-45 degrees. Further, the length of the water pipe is 1-2 m. Further, the on-line quenching device further comprises a plurality of ultrasonic transducers, and the ultrasonic transducers are respectively arranged on the outer side wall of the quenching tank. Further, the ultrasonic transducers are uniformly and symmetrically arranged on the two outer side walls of the quenching tank. The invention provides a second aspect of the on-line quenching method of the deep cavity aluminum alloy section, which comprises the following steps that the deep cavity aluminum alloy section extruded by an extruder enters a quenching tank of an on-line quenching device, the deep cavity aluminum alloy section passes over a spraying disturbance component on the bottom wall of the quenching tank, water is introduced into a water introducing pipe of the spraying disturbance component, and a plurality of spray heads on the water introducing pipe spray water for disturbing water flow in the quenching tank towards the inner wall direction of a cavity of the deep cavity aluminum alloy section. Further, the included angle between the spraying direction of the first spray heads at the top of the water pipe and the moving direction of the deep cavity aluminum alloy section is 15-30 degrees. Further, the included angle between the spraying direction of the second spray heads on the two opposite side parts of the water pipe and the moving direction of the deep cavity aluminum alloy section is 30-45 degrees. Further, the method further comprises the step of opening ultrasonic transducers on two outer side walls of the quenching tank after the deep cavity aluminum alloy section enters the quenching tank, and emitting ultrasonic waves of 20 kHz-40 kHz. According to the deep-cavity aluminum alloy section online quenching device provided by the invention, the water pipe is arranged on the bottom wall of the quenching tank, the plurality of spray heads are arranged in the extending direction of the water pipe, the spray heads spray