CN111534678A

CN111534678A - Aluminum alloy heat treatment furnace

Info

Publication number: CN111534678A
Application number: CN202010592875.0A
Authority: CN
Inventors: 宋忠喜; 闫妮
Original assignee: Lianyungang Huatong Construction Engineering Co ltd
Current assignee: Huimin Jiusheng Aluminum Co ltd
Priority date: 2020-06-25
Filing date: 2020-06-25
Publication date: 2020-08-14
Anticipated expiration: 2040-06-25
Also published as: CN111534678B

Abstract

The invention discloses an aluminum alloy heat treatment furnace, which comprises a furnace body, a capsule cabin body for placing aluminum alloy materials, a spiral channel arranged in the furnace body and a processing device group, wherein the capsule cabin body is used for placing the aluminum alloy materials; the spiral channel comprises an inlet arranged at the top end and an outlet arranged at the bottom end, and a guide rail is arranged in the spiral channel along the bending length direction of the spiral channel; the capsule cabin is characterized in that a cabin door for the aluminum alloy material to enter and exit and at least one processing port for communicating with a processing device group are arranged on the side edge of the capsule cabin body, a sealing cover is arranged on the processing port, and a guide block is arranged on the side edge of the capsule cabin body and can be in sliding connection with a guide rail; the processing device set comprises a quick cooling device and a warming device, the quick cooling device is arranged adjacent to the inlet, the quick cooling device can be communicated with the processing port, and the warming device is arranged along the axial direction of the spiral channel. The invention provides a continuous heat treatment device suitable for industrial application for heat treatment of the aluminum alloy material, shortens the aging processing time of the aluminum alloy material, improves the performance of the aluminum alloy material, realizes uninterrupted production and reduces the production cost.

Description

Aluminum alloy heat treatment furnace

Technical Field

The invention relates to the technical field of aluminum alloy processing, in particular to aluminum alloy quenching post-treatment, and particularly relates to an aluminum alloy heat treatment furnace.

Background

The heat treatment of the aluminum alloy is to select a certain heat treatment standard, control the heating speed to rise to a certain corresponding temperature, keep the temperature for a certain time and cool at a certain speed to change the structure of the alloy, and the main purposes are to improve the mechanical property of the alloy, enhance the corrosion resistance, improve the processing performance and obtain the dimensional stability.

For steels with higher carbon content, a very high hardness is obtained immediately after quenching, while the plasticity is very low. However, the aluminum alloy is not the same, and the strength and hardness do not increase immediately after the quenching, but the plasticity does not decrease but increases rather. However, the strength and hardness of the quenched alloy can be obviously improved after the alloy is placed for a period of time (such as 4-6 days and nights), and the plasticity is obviously reduced. The phenomenon that the strength and the hardness of the aluminum alloy after quenching are obviously improved along with the increase of time is called aging. Aging can occur at normal temperature, called natural aging, or within a certain temperature range (such as 100-200 ℃) higher than room temperature, called artificial aging.

In CN106591632B, the aluminum alloy is processed by solution treatment, cryogenic treatment and aging treatment. The solution treatment is carried out in an air furnace or a salt bath furnace, the heating temperature is 470-535 ℃, the heat preservation time is the maximum section thickness tmm multiplied by 3.0-10.0 min/mm, and then the alloy is subjected to water quenching at room temperature. The subzero treatment is to carry out subzero treatment on the quenched alloy in an environment box, wherein the cooling temperature is-80 ℃ to-190 ℃, and the heat preservation time is 0.5-5 h. The aging treatment is to immediately perform single-stage or double-stage artificial aging treatment on the alloy subjected to cryogenic treatment, a mode of entering a furnace at a warm state is adopted during aging, residual stress in the alloy is eliminated through stress generated by temperature difference change, specifically, the single-stage aging process is 120-173 ℃/8-36 h, and the double-stage aging process is as follows: 90-135 ℃/10-28 h + 140-165 ℃/6-16 h, and continuous furnace temperature rise is adopted between primary and secondary aging. However, the aluminum alloy processing mode has no continuous processing system, and is particularly applied to industrial production. Therefore, it is necessary to provide a further solution to the above problems.

Disclosure of Invention

The invention aims to provide an aluminum alloy heat treatment furnace to overcome the defects in the prior art.

In order to solve the technical problems, the technical scheme of the invention is as follows:

an aluminum alloy heat treatment furnace comprises a furnace body, a spiral channel and a processing device group, wherein the furnace body comprises a capsule cabin body for placing aluminum alloy, the spiral channel is arranged in the furnace body, and the processing device group is arranged in the furnace body;

the spiral channel comprises an inlet arranged at the top end and an outlet arranged at the bottom end, and a guide rail is arranged in the spiral channel along the bending length direction of the spiral channel;

the side edge of the capsule cabin body is provided with a cabin door for aluminum alloy to enter and exit and at least one processing port for communicating the processing device group, a sealing cover is arranged on the processing port, and the side edge of the capsule cabin body is provided with a guide block which can be in sliding connection with the guide rail;

the machining device set comprises a quick cooling device and a heating device, the quick cooling device is adjacent to the inlet, the quick cooling device can be communicated with the machining opening, and the heating device is arranged along the axial direction of the spiral channel.

In a preferred embodiment of the invention, the front end of the capsule cabin body is provided with a brake assembly, the brake assembly comprises an open-loop brake pad circumferentially arranged along the capsule cabin body and a telescopic rod arranged in the capsule cabin body, and the telescopic rod is fixed with the open-loop brake pad along the radial direction of the open-loop brake pad.

In a preferred embodiment of the invention, at least two open-loop brake pads are symmetrically arranged on the periphery of the capsule body.

In a preferred embodiment of the invention, the front end and the rear end of the capsule body are provided with the brake assemblies.

In a preferred embodiment of the invention, a cable is connected between the brake components at the front end and the rear end of the capsule body.

In a preferred embodiment of the present invention, the rapid cooling device includes a cold air producing device and an air pumping device, and the cold air producing device and the air pumping device are disposed symmetrically with respect to the spiral channel and can be respectively communicated with the corresponding processing ports of the capsule body.

In a preferred embodiment of the present invention, the capsule comprises a plurality of capsule bodies connected in sequence, a movable rod is connected between the plurality of capsule bodies, and two ends of the movable rod are respectively connected with two adjacent capsule bodies through universal balls.

In a preferred embodiment of the present invention, at least two opposite guide rails are disposed in the spiral channel, and corresponding guide blocks are disposed on the side edges of the capsule body, and the guide blocks clamp the capsule body between the guide rails.

In a preferred embodiment of the present invention, a rack body is further disposed in the furnace body, the rack body includes a main supporting rod and a plurality of branch supporting rods, the main supporting rod is disposed along a height direction of the spiral channel, and the plurality of branch supporting rods are respectively connected to different portions of the spiral channel.

In a preferred embodiment of the present invention, the inlet and the outlet of the spiral passage are connected to a horizontal passage, and the rapid cooling device is disposed around the horizontal passage connected to the inlet.

In a preferred embodiment of the present invention, the spiral channel has a truncated cone-shaped structure.

In a preferred embodiment of the invention, the capsule body is made of a ceramic material.

Compared with the prior art, the invention has the beneficial effects that:

(1) the invention provides a continuous heat treatment device suitable for industrial application for aluminum alloy heat treatment, particularly for continuous treatment after aluminum alloy quenching, shortens the aging processing time of the aluminum alloy, improves the performance of the aluminum alloy, realizes uninterrupted production and reduces the production cost.

(2) According to the capsule cabin, the spiral channel is arranged, so that a processing position is provided for aluminum alloy processing, the processing device group is convenient to arrange, the capsule cabin can move conveniently, and a slower processing position is provided for the aluminum alloy in the slow downward direction of the spiral channel, so that the whole processing procedure can be completed through autonomous sliding, and the production cost is reduced.

(3) According to the invention, the capsule body provides a carrier for the movement of the aluminum alloy, and meanwhile, the capsule body is matched with the spiral channel, so that the aluminum alloy can smoothly turn; meanwhile, a smaller cooling space is provided for cooling the aluminum alloy, the cooling efficiency is improved, and the extremely-fast cooling is realized.

(4) According to the invention, the air exhaust device and the cold air manufacturing device are oppositely arranged and matched, so that cold air can rapidly and uniformly flow on the surface of the aluminum alloy, and rapid cooling is realized.

(5) According to the capsule cabin, the speed of the capsule cabin body positioned in the spiral channel is controlled through the brake assembly arranged on the capsule cabin body, so that the processing requirements are matched, furthermore, the collision of the side wall of the spiral channel is realized through the matching of the open-loop brake block and the telescopic rod, so that the convenient speed reduction is realized, and the speed reduction can be controlled through controlling the deformation degree of the open-loop brake block.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a perspective view of the spiral channel and a portion of the heating assembly of the present invention;

FIG. 3 is an enlarged perspective view of a plurality of capsule bodies according to the present invention after being connected;

FIG. 4 is an enlarged perspective view of the capsule body according to another embodiment of the present invention;

FIG. 5 is an enlarged perspective view of the capsule body in the braking state in the embodiment of FIG. 4.

Specifically, 100-furnace body, 110-frame body, 111-main supporting rod, 112-branch supporting rod,

200-spiral channel, 210-inlet, 220-outlet, 230-horizontal channel,

300-capsule body, 310-capsule door, 320-sealing cover, 330-movable rod, 340-guide block,

410-a quick cooling device, 411-a cold air manufacturing device, 412-an air extracting device,

500-brake component, 510-open loop brake block, 520-telescopic rod, 530-rope.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1 and 2, an aluminum alloy heat treatment furnace includes a furnace body 100, a capsule body 300 for placing aluminum alloy, a spiral passage 200 disposed inside the furnace body 100, and a processing device group. The invention provides a continuous heat treatment device suitable for industrial application for heat treatment of the aluminum alloy material, particularly for continuous treatment after quenching of the aluminum alloy material, shortens the aging processing time of the aluminum alloy material, improves the performance of the aluminum alloy material, realizes uninterrupted production and reduces the production cost.

Specifically, the furnace body 100 is shaped to match the overall shape of the spiral passage 200, to provide a heat-insulating space for the processing device group, and to avoid external interference. The two ends of the spiral channel 200 extend out of the furnace body 100 for the capsule body 300 to enter and exit, and preferably, the capsule body 300 enters from the top end of the spiral channel 200 through a conveying device and exits from the bottom end, so that the capsule body 300 can slide automatically by using the gravity of the capsule body 300, and the energy consumption is reduced.

As shown in fig. 2, the spiral channel 200 includes an inlet 210 disposed at the top end and an outlet 220 disposed at the bottom end for the capsule 300 to enter and exit. The spiral channel 200 is provided with guide rails along its curved length to provide stable sliding guidance of the capsule body 300 and to restrict its rotation. Through spiral channel 200 setting, on the one hand, for aluminum alloy material processing provides the processing position, make things convenient for processingequipment group to arrange, do benefit to capsule body 300 and remove, on the other hand, spiral channel 200's slow downward trend provides a processing position of comparatively slow removal for aluminum alloy material, makes it can pass through the whole manufacturing procedure of independent completion that slides, reduction in production cost.

As shown in fig. 3, the capsule body 300 is a cylinder structure with two hemispherical ends, and the curved end of the cylinder structure facilitates the capsule body 300 to smoothly turn in the spiral channel 200, and reduces collision vibration and damage. Meanwhile, a space is reserved at two ends of the capsule body 300, so that a position is provided for installing additional components. The capsule 300 provides a carrier for the movement of the aluminum alloy material, and meanwhile, the capsule 300 is matched with the spiral channel 200 in the radial direction, so that the aluminum alloy material can move stably. The capsule body 300 is provided at its side with a door 310 and a processing opening, on which a cover 320 is arranged, as will be appreciated. The hatch 310 is used for the ingress and egress of aluminum alloy materials, and generally, the hatch 310 is longer and wider along the length direction of the capsule body 300 so as to facilitate the release and taking of aluminum alloy materials. Specifically, the aluminum alloy material may be fixed by a plurality of lifting ropes, a clamping position or other manners inside the capsule 300, and which manner is selected according to the shape, performance and the like of different aluminum alloy castings. The processing ports are used for communicating with the quick cooling device 410, and the number and the arrangement positions of the processing ports are arranged according to the quick cooling device 410. At least one machining port is provided, but two, three, and more may be provided to cooperate with the rapid cooling device 410.

The processing device group includes a rapid cooling device 410 and a temperature increasing device. A rapid cooling device 410 is positioned adjacent to the inlet 210 to perform a first processing operation on the aluminum-alloy material. The rapid cooling device 410 can be communicated with the processing port, so that a small cooling space is formed through the narrow space of the capsule body 300, the cooling efficiency is improved, and the extremely rapid cooling is realized. The heating device is arranged along the axial direction of the spiral channel 200, the heating device can be fixed with the spiral channel 200 or the furnace body 100 to provide higher temperature for the inside of the spiral channel 200, the heating device can be a single heater or a combination of a plurality of heaters, step heating is formed in the furnace body 100, and a plurality of heating ranges are formed in the furnace body 100.

Generally, a plurality of capsule bodies 300 fixedly connected in sequence form a processing group, generally, three to five capsule bodies 300 form a group, enter the furnace body 100, and pass through the rapid cooling device 410 and the heating device in sequence by using the spiral channel 200 to complete the processing. The capsule body 300 is always kept in a relatively stable state in the spiral channel 200 due to the limiting effect of the side wall of the spiral channel 200 and the guide rails in the spiral channel 200, so that the shaking and collision of the aluminum alloy material in the capsule body are reduced. When the capsule 300 is close to the quick cooling device 410, the sealing cover 320 on the capsule 300 is opened, and the connecting pipe of the quick cooling device 410 extends into the processing port, so that the aluminum alloy material inside the capsule 300 is directly processed, and particularly, when the capsule 300 is cooled, a smaller cooling space can be provided for cooling the aluminum alloy material, the cooling efficiency is improved, and the extremely quick cooling is realized. The closing cap 320 of capsule cabin body 300 can adopt the sliding closure setting, conveniently remove in spiral channel 200's narrow and small space, the switching of closing cap 320 can be for its automatic control, confirm its processing position through the sensor, the closing cap 320 is automatic to be opened after reacing the processing position, thereby the processing mouth can be inserted to quick cooling device 410's connecting pipe, preferentially, processing mouth or connecting pipe periphery are provided with the sealing washer, the connecting pipe spiral removal gets into the processing mouth, thereby strengthen leakproofness between the two, avoid air conditioning to leak. The heating device can adopt an electromagnetic induction heating mode.

In a preferred embodiment of the present invention, as shown in fig. 4 and 5, the front end of the capsule body 300 is provided with a brake assembly 500, i.e., the front end of the capsule body 300 in the moving direction is provided with the brake assembly 500, so that the speed control of the capsule body 300 in the spiral passage 200 is realized to match the processing requirement. The brake assembly 500 comprises an open-loop brake block 510 circumferentially arranged along the capsule body 300 and a telescopic rod 520 arranged in the capsule body 300, wherein the telescopic rod 520 is fixed with the open-loop brake block 510 along the radial direction thereof. Drive open-loop brake block 510 through telescopic link 520 and contradict on capsule cabin body 300 lateral wall to make it expand to both sides, with contradict on spiral channel 200 lateral wall, reduce capsule cabin body 300's translation rate, and can control the deceleration size through the deformation degree control of control open-loop brake block 510. The telescopic link 520 can specifically drive the lead screw to move through the motor, so that the movement is more stable. Preferably, at least two open-loop brake pads 510 are symmetrically arranged on the capsule body 300 in the circumferential direction. The brake assembly 500 may include two open-loop brake pads 510, and the two open-loop brake pads 510 are symmetrically disposed at both sides of the capsule body 300. Further, the front end and the rear end of the capsule 300 are provided with brake assemblies 500, and a rope 530 is preferably connected between the two brake assemblies 500 to enhance the connection between the two brake assemblies 500 and the capsule 300, and specifically, the rope 530 may be provided to be connected through the corresponding open-loop brake pads 510.

In a preferred embodiment of the present invention, the quick cooling device 410 includes a cold air producing device 411 and an air extracting device 412, wherein the cold air producing device 411 and the air extracting device 412 are disposed axially symmetrically with respect to the spiral channel 200 and can be respectively communicated with corresponding processing ports of the capsule 300. Through the relative cooperation that sets up of air exhaust device 412 and cold air manufacturing installation 411 to realize the quick even flow through aluminium alloy material surface of cold air, realize cooling down fast. The cold gas medium can be dry ice, liquid nitrogen, etc.

In a preferred embodiment of the present invention, as shown in fig. 3, the aluminum alloy heat treatment furnace comprises a plurality of capsule chambers 300 connected in sequence, and a movable rod 330 is connected between the capsule chambers 300 to achieve the synchronous processing of a plurality of aluminum alloy materials. Further, two ends of the movable rod 330 are respectively connected with two adjacent capsule bodies 300 through universal balls, so as to realize convenient steering of the capsule bodies 300 in the spiral channel 200. To prevent the movable rod 330 from falling off, a locking device, such as a clip, is disposed on the ball seat connected to the capsule body 300, but not limited thereto.

In a preferred embodiment of the present invention, at least two opposite guide rails are disposed in the spiral channel 200, corresponding guide blocks 340 are disposed on the side of the capsule 300, and the guide blocks 340 clamp the capsule 300 between the guide rails to further stabilize the capsule 300. In general, two pairs of guide blocks 340 are symmetrically disposed at both sides of the capsule body 300, and three or more guide blocks 340 are uniformly disposed along the circumferential direction of the capsule body 300.

In a preferred embodiment of the present invention, as shown in fig. 2, a frame body 110 is further disposed in the furnace body 100, the frame body 110 includes a main supporting rod 111 and a plurality of sub supporting rods 112, the main supporting rod 111 is disposed along the height direction of the spiral channel 200, and the plurality of sub supporting rods 112 are respectively connected to different portions of the spiral channel 200 to stabilize the shape of the spiral channel 200 and prolong the service life.

In a preferred embodiment of the present invention, the inlet 210 and the outlet 220 of the spiral passage 200 are connected to the horizontal passage 230, and the rapid cooling device 410 is disposed around the horizontal passage 230 connected to the inlet 210. The connection between the processing opening of the capsule body 300 and the quick cooling device 410 is more stable by horizontally arranging the quick cooling device 410.

In a preferred embodiment of the present invention, the spiral channel 200 has a truncated conical shape to enhance the stability of the spiral channel 200.

In a preferred embodiment of the present invention, the capsule body 300 is made of a ceramic material to adapt to a low temperature and high temperature processing environment.

It can be understood that the capsule chamber 300 enters from the top inlet 210 of the spiral passage 200 and leaves from the bottom outlet 220, and can automatically slide by using the gravity of the capsule chamber 300 itself, so as to reduce energy consumption, and certainly, the initial speed of the capsule chamber 300 needs to be given, and generally, the capsule chamber 300 can be pushed to slide downwards after being processed by the rapid cooling device 410 for 0.5h, and is in a cooling and heat-preserving range within a certain distance, and then enters into a first-stage heating range, and then enters into a second-stage heating range, … …, until leaving the furnace body 100.

The invention is particularly suitable for processing the aluminum alloy material by adopting the processing modes of solution treatment, cryogenic treatment and aging treatment. The solution treatment is carried out in an air furnace or a salt bath furnace, the heating temperature is 470-535 ℃, the heat preservation time is the maximum section thickness tmm multiplied by 3.0-10.0 min/mm, and then the alloy is subjected to water quenching at room temperature. The aluminum alloy material after quenching is quickly transferred to the aluminum alloy heat treatment furnace through the capsule body 300 for subzero treatment, namely, the quenched alloy is treated for about 0.5h at the cooling temperature of minus 80 ℃ to minus 190 ℃ through the quick cooling device 410 and slides for 0.5-5 h in the cooling and heat preservation range of the spiral channel 200. After the cryogenic treatment is finished, the alloy slides into a heating range, single-stage or double-stage artificial aging treatment is immediately carried out on the alloy, residual stress in the alloy is eliminated through stress generated by temperature difference change, specifically, the single-stage aging process is 120-173 ℃/8-36 h, and the double-stage aging process is as follows: 90-135 ℃/10-28 h + 140-165 ℃/6-16 h, and continuous temperature rise is adopted between primary and secondary aging. The primary aging treatment can be completed in a primary heating range, and the secondary aging treatment can be completed in a secondary heating range.

In conclusion, the continuous heat treatment device suitable for industrial application is provided for heat treatment of the aluminum alloy material, and particularly continuous treatment after quenching of the aluminum alloy material is carried out, so that the aging processing time of the aluminum alloy material is shortened, the performance of the aluminum alloy material is improved, uninterrupted production is realized, and the production cost is reduced.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An aluminum alloy heat treatment furnace comprises a furnace body, and is characterized by comprising a capsule cabin body for placing aluminum alloy, a spiral channel arranged in the furnace body, and a processing device group;

2. The aluminum alloy heat treatment furnace of claim 1, wherein the front end of the capsule body is provided with a brake assembly, the brake assembly comprises an open-loop brake pad circumferentially arranged along the capsule body and a telescopic rod arranged in the capsule body, and the telescopic rod is fixed with the open-loop brake pad along the radial direction of the open-loop brake pad.

3. The aluminum alloy heat treatment furnace of claim 2, wherein the capsule body is symmetrically provided with at least two open-loop brake pads in the circumferential direction.

4. The aluminum alloy heat treatment furnace of claim 2, wherein the brake assembly is disposed at both the front end and the rear end of the capsule body.

5. The aluminum alloy heat treatment furnace of claim 4, wherein a rope is connected between the brake assemblies at the front end and the rear end of the capsule body.

6. The aluminum alloy heat treatment furnace of claim 1, wherein the quick cooling device comprises a cold air producing device and an air extracting device, the cold air producing device and the air extracting device are arranged in axial symmetry with respect to the spiral channel and can be respectively communicated with the corresponding processing ports on the capsule body.

7. The aluminum alloy heat treatment furnace according to claim 1, comprising a plurality of capsule bodies connected in sequence, wherein a movable rod is connected between the plurality of capsule bodies, and two ends of the movable rod are respectively connected with two adjacent capsule bodies through universal balls.

8. The aluminum alloy heat treatment furnace of claim 1, wherein at least two opposite guide rails are arranged in the spiral channel, corresponding guide blocks are arranged on the side edges of the capsule body, and the capsule body is clamped between the guide rails by the guide blocks.

9. The aluminum alloy heat treatment furnace of claim 1, wherein a frame body is further arranged in the furnace body, the frame body comprises a main support rod and a plurality of branch support rods, the main support rod is arranged along the height direction of the spiral channel, and the branch support rods are respectively connected with different parts of the spiral channel.

10. The aluminum alloy heat treatment furnace of claim 1, wherein a horizontal channel is connected to the inlet and the outlet of the spiral channel, and the rapid cooling device is disposed around the horizontal channel connected to the inlet.