Vertical heating method for solid solution heat treatment of high-strength aluminum alloy strip

Abstract

The invention relates to a high-strength aluminum alloy strip solid solution heat treatment vertical heating method, and relates to the technical field of vertical heat treatment furnaces. A working chamber is divided into a first working chamber and a second working chamber on the two sides of a strip when the strip passes through the working chamber. The flow guide plates in the first working chamber and the flow guide plates in the second working chamber are sequentially arranged in a staggered mode at the set height, and therefore the first working chamber and the second working chamber are divided into a plurality of independent working unit chambers under the action of the flow guide plates. A communicated intersection area is arranged between the working unit chamber in the first working chamber and the working unit chamber in the adjacent second working chamber. In addition, a compensation brush, a linkage mechanism and the like are further arranged, it is ensured that the two sides of the strip are evenly heated in the heating process, deviation is reduced, and the heating quality and efficiency are improved.

Description

Technical Field

[0001] The present application relates to the technical field of heat treatment of metal strips, and in particular to a vertical heating method for solution heat treatment of high-strength aluminum alloy strips. Background Art

[0002] Heat treatment technology for metal strips is an indispensable part of modern industrial production, and plays an important role in aerospace, automobile manufacturing, electronics and other fields. With the continuous development of industrial technology, the performance requirements for metal strips, especially high-strength aluminum alloy strips, are getting higher and higher, and heat treatment technology is one of the key processes to improve their performance. Traditional heat treatment methods mostly use horizontal or single-sided heating methods, which makes it difficult to ensure uniform heating of the metal strip during the heating process, especially in the case of double-sided heating, it is even more difficult to achieve precise control. Therefore, the development of a heat treatment method and technology that can effectively improve heating uniformity has become a research focus in this field.

[0003] At present, in order to solve the problem of uneven heating of metal strips during heat treatment, the relevant technology involves a vertical heat treatment furnace, which heats the strip by double-sided heating, and comprises a furnace body, a guide shell is arranged inside the furnace body, a pair of jet baffles are arranged inside the guide shell, and the two jet baffles divide the interior of the guide shell into three areas: a working room in the middle for the strip to pass through, and a spray chamber with heating units on both sides of the working room for realizing hot air circulation, the jet baffle has a number of air jets, and the tops of the two spray chambers are provided with independent fans, the air outlet of the fan is located at the top opening of the spray chamber, and the air inlet of the fan is located at the top opening of the working room, so that the hot air flows from the air outlet to the working room under the action of the fan to heat the strip, and then is drawn to the spray chamber through the fan for heating again to realize circulating flow.

[0004] The above-mentioned related technologies have the following defects: in actual operation, even if the same model and specification of fan and heating unit are selected, there is still a certain difference in the final wind speed and heating effect, which is difficult to meet the requirements of high-precision heat treatment. Therefore, how to further optimize the heat treatment method to reduce the deviation of the heating degree on both sides of the strip has become an urgent problem to be solved. Summary of the invention

[0005] In order to reduce the deviation of the heating degree on both sides of the strip, the present application provides a vertical heating method for solution heat treatment of a high-strength aluminum alloy strip.

[0006] In the first aspect, the present application provides a vertical heat treatment furnace adopting the following technical solution: A vertical heat treatment furnace comprises a vertical furnace body, a guide shell is arranged inside the furnace body, a pair of jet baffles are arranged inside the guide shell, the two jet baffles divide the interior of the guide shell into three areas: a working room in the middle for strips to pass through and a spray chamber with heating units on both sides of the working room to realize hot air circulation, the jet baffle has a plurality of spray ports, the tops of the two spray chambers are provided with fans, the air outlets of the fans are located at the top opening of the spray chamber, the air inlets of the fans are located at the top opening of the working room, the working room is divided into a first working chamber and a second working chamber on both sides of the strips when the strips pass through, the jet baffle is provided with a transverse guide plate, and the guide plates inside the first working chamber and the guide plates inside the second working chamber are staggered in height in sequence so that the first working chamber and the second working chamber are divided into a plurality of independent working unit chambers under the action of the guide plates, and there is a connecting intersection area between the working unit chambers in the first working chamber and the working unit chambers in the adjacent second working chamber. By adopting the above technical solution, during the heating process of the strip in the studio, the hot air is exchanged between the first working chamber and the second working chamber through the intersection area, which effectively reduces the temperature difference between the first working chamber and the second working chamber, thereby significantly reducing the uneven heating on both sides of the strip. Preferably, the guide plate is provided with a compensating brush on the side facing the strip, and the compensating brush is against the surface of the strip during the heat treatment of the strip. By adopting the above technical solution, on the one hand, the compensating brush is against the surface of the strip during the heat treatment of the strip, which can improve the air tightness of the gap between the guide plate and the strip, allowing the hot air to stay in the working chamber for a longer time, thereby having a better heating effect on the strip. On the other hand, the compensating brush can brush the surface of the strip, which can effectively remove the dust adhered to the surface of the strip during the processing. Preferably, the compensating brush is detachably connected to the guide plate. By adopting the above technical solution, the compensating brush can be easily and quickly connected or disassembled with the guide plate, which is convenient for replacing or cleaning the compensating brush. Preferably, the guide plate is rotatably connected to the jet partition, and the furnace body is provided with a flip driving member for driving the guide plate to rotate. By adopting the above technical solution, the guide plate is rotatably connected to the jet partition, and the furnace body is provided with a flip driving member for driving the guide plate to rotate. This design allows the guide plate to be flipped and adjusted as needed, so as to better control the distribution of hot air between the first working chamber and the second working chamber, and further optimize the heating uniformity on both sides of the strip. Preferably, the jet partition is rotatably provided with a bracket, and the bracket is rotatably provided with an abutment wheel. A tightening elastic member for pushing the abutment wheel toward the strip is provided between the jet partition and the bracket. During the heat treatment of the strip, the abutment wheels on both sides are attached to and rotate with the strip, and a linkage mechanism for driving the guide plate to swing is provided between the abutment wheel and the guide plate.By adopting the above technical solution, first, the abutment wheel can be attached to and rotated with the strip during the heat treatment process of the strip, ensuring the stability and centering of the strip during the heating process, and reducing the problem of uneven heating caused by the deviation of the strip; second, the linkage mechanism drives the guide plate to swing, further optimizing the distribution of hot air between the first working chamber and the second working chamber, and improving the uniformity of heating on both sides of the strip; third, combined with the compensation brush at the end of the guide plate, the continuously swinging guide plate can also swing and brush the strip to improve the cleanliness of the plate surface. Preferably, the linkage mechanism includes a push rod, a slider, a traction rod and a traction trough, the slider is slidably connected to the jet baffle, the two ends of the push rod are respectively rotatably connected to the slider and the abutment wheel, the slider is rotatably connected to the traction rod, the end of the traction rod away from the slider is connected to the traction trough, and the guide plate is embedded in the traction trough. By adopting the above technical solution, the abutment wheel will be driven to rotate during the conveying process of the strip, and the rotation of the abutment wheel drives the slider to do the movement of a crank slider, that is, the slider slides back and forth vertically, and the vertical sliding of the slider drives the traction rod, that is, the traction trough body, to move up and down, and the traction trough body is sleeved on the end of the guide plate, so the guide plate can realize passive continuous swinging during the rotation of the abutment wheel with the strip, which reduces energy consumption and is more energy-saving and environmentally friendly. In addition, this series of transmission mechanisms will consume energy due to friction and other reasons during operation, that is, it will affect the speed of strip conveying to a certain extent, but in this case, the heating effect of the strip can be better improved after the strip conveying is slowed down, and the contact time between the strip and the hot air is longer. Therefore, the relevant settings of this case overcome technical prejudice. Preferably, a guide wheel is rotatably arranged inside the traction trough body, and the guide wheel is against the guide plate. By adopting the above technical solution, the guide wheel rotatably arranged inside the traction trough body abuts against the guide plate, which can effectively guide the movement trajectory of the guide plate, ensure that the guide plate swings smoothly during operation, avoid hard friction between the guide plate and the traction trough body, reduce the wear rate of the two components, and extend the service life. Preferably, the guide plate is provided with a synchronous gear, and the jet baffle is rotatably provided with a steering gear, and the steering gear is located between two adjacent synchronous gears and meshes with each other. By adopting the above technical solution, the steering gear enables the synchronous gears on both sides to achieve synchronous and unidirectional rotation, thereby achieving synchronous and unidirectional movement between multiple guide plates on the same side. In addition, based on this design, the present case can be further configured so that the swinging states between the guide plates on both sides are opposite, and this state can further enhance the turbulence and mixing effects of the hot air in the studio, and can further improve the uniformity of the heat treatment process on both sides of the strip. Preferably, the top wall of the guide plate is provided with a reserved groove.By adopting the above technical solution, firstly, the reserved groove arranged on the top wall of the guide plate can reduce the dead weight of the guide plate and improve the flexibility of the guide plate rotation; secondly, in the process of reciprocating swing of the compensation brush, the fallen dust can be accumulated inside the reserved groove, so as to be timely received, to prevent the dust from continuously flowing downward with the conveying of the strip in the state of a vertical heat treatment furnace, causing secondary contamination of the strip, and subsequently only regular cleaning and maintenance of the dust accumulated inside the reserved groove is required.

[0007] In a second aspect, the present application provides a vertical heating method for solution heat treatment of a high-strength aluminum alloy strip, which adopts the following technical solution: A vertical heating method for solution heat treatment of high-strength aluminum alloy strip: the strip enters the furnace body from the top of the working room, and during the downward conveying of the strip, hot air enters the first working chamber and the second working chamber from the blast chamber to heat both sides of the strip, and the working unit chamber in the first working chamber and the working unit chamber in the adjacent second working chamber exchange hot air through the intersection area to reduce the heating degree between the first working chamber and the second working chamber, so that the heating deviation on both sides of the strip is smaller. By adopting the above technical solution, the strip enters the furnace body from the top of the working room, and during the downward conveying, hot air enters the first working chamber and the second working chamber from the blast chamber to heat both sides of the strip. The working unit chamber in the first working chamber and the working unit chamber in the adjacent second working chamber exchange hot air through the intersection area, effectively reducing the heating difference between the first working chamber and the second working chamber, and significantly reducing the heating deviation on both sides of the strip.

[0008] In summary, the present application includes at least one of the following beneficial technical effects: 1. By dividing the working room into working room 1 and working room 2 when the strip passes through, and setting staggered guide plates, working room 1 and working room 2 are separated into multiple independent working unit rooms. Hot air is exchanged in the intersection area, which significantly reduces the difference in heating degree between working room 1 and working room 2, thereby reducing the heating deviation on both sides of the strip; 2. A compensation brush is provided on the side of the guide plate facing the strip, which contacts the surface of the strip during the heat treatment process, and compensates for the temperature difference on both sides of the strip through physical contact, further improving the heating uniformity on both sides of the strip; 3. The guide plate is rotatably connected to the jet barrier and is equipped with a flip drive. The arrangement of the guide plate can be dynamically adjusted according to the actual heating conditions, so that the hot air is more evenly distributed on both sides of the strip, further improving the uniformity and stability of the heat treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the structure of Example 1 of the present application; Figure 2 This is a structural schematic diagram for illustrating the connection relationship between the guide plate and the furnace body in Example 1 of the present application; Figure 3 This is a structural schematic diagram for reflecting the positional relationship between the working room and the blowing chamber in Example 1 of the present application; Figure 4 This is a structural schematic diagram for reflecting the hot air interaction path in each studio unit under working conditions in Example 1 of the present application; Figure 5 This is a structural schematic diagram for illustrating the connection relationship between the compensation brush and the guide plate in Example 1 of the present application; Figure 6 This is a schematic diagram of the structure of Example 2 of the present application; Figure 7 This is a structural schematic diagram for reflecting the connection relationship between the linkage mechanism and the guide plate in Example 2 of the present application; Figure 8 This is a structural schematic diagram used to illustrate the connection relationship between the traction trough and the guide plate in Example 2 of the present application.

[0010] In the figure: 1. Furnace body; 11. Shell; 12. Insulation lining; 13. Guide shell; 14. Jet baffle; 140. Air jet; 15. Fan; 16. Guide plate; 160. Reserved slot; 17. Turnover drive; 18. Compensation brush; 181. Nylon velvet belt; 182. Nylon hook belt; 19. Compensation soft board; 2. Studio; 21. Studio 1; 22. Studio 2; 23. Work unit room; 24. Intersection area; 3. Blowing chamber; 4. Strip; 5. abutting wheel; 51. bracket; 52. abutting elastic member; 6. linkage mechanism; 61. push rod; 62. slider; 63. traction rod; 64. traction trough; 65. guide wheel; 71. Synchronous gear; 72. Steering gear. DETAILED DESCRIPTION

[0011] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present invention. The described embodiments are only possible technical implementations of the present invention, not all possible implementations. Those skilled in the art can fully combine the embodiments of the present invention to obtain other embodiments without creative work, and these embodiments are also within the scope of protection of the present invention. The inventor of the present application found that in the scenario where double-sided heating uses independent fans and heating units, in the actual operation process, even if the fans and heating units of the same model and specification are selected, there is still a certain gap in the final wind speed and heating effect, so there is a deviation in the overall heating degree on both sides of the strip. For this reason, the present application mainly adopts the following scheme, that is, the strip enters the furnace body from the top of the working room, and during the downward conveying of the strip, the hot air enters the working chamber 1 and the working chamber 2 from the air spray chamber to heat both sides of the strip, and the working unit chamber in the working chamber 1 and the working unit chamber in the adjacent working chamber 2 exchange hot air through the intersection area to reduce the heating degree between the working chamber 1 and the working chamber 2, so that the heating deviation on both sides of the strip is smaller, achieving the effect of improving the uniformity of heating.

[0012] Example 1 Reference Figure 1 and Figure 2 The vertical heat treatment furnace provided in the embodiment of the present application includes a vertical furnace body 1. In addition to the shell 11 and the heat-insulating furnace lining 12, the furnace body 1 also includes a flow guide shell 13 arranged inside the heat-insulating furnace lining 12. A pair of jet baffles 14 are arranged inside the flow guide shell 13. The two jet baffles 14 divide the inside of the flow guide shell 13 into three areas: a working room 2 located in the middle for the strip 4 to pass through, and a blast chamber 3 with heating units on both sides of the working room 2 to realize hot air circulation. A fan 15 is installed on the top of each blast chamber 3. The air outlet of the fan 15 is located at the top opening of the blast chamber 3, and the air inlet of the fan 15 is located at the top opening of the working room 2. In addition, the jet baffle 14 is vertically distributed with a plurality of air jets 140, so that when the fan 15 is working, the hot air in the air jet chamber 3 can be blown from the air jets 140 into the working room 2, and after the hot air contacts the strip 4 to realize heat exchange, it flows back from the top of the working room 2 to the air jet chamber 3 to be reheated to realize circulation.

[0013] Reference Figure 3During the processing of the strip 4, the working room 2 is divided into a working chamber 1 21 and a working chamber 2 22 on both sides of the strip 4 when the strip 4 passes through. A guide plate 16 is rotatably arranged on the jet baffle 14 through a bearing, and a flip driving member 17 is arranged on the outer side of the furnace body 1. The flip driving member 17 can be of various types, such as a motor, a cylinder, a hydraulic cylinder, etc. Taking the motor as an example, the motor is connected to the guide plate 16, and the rotation of the guide plate 16 is achieved by driving the motor to rotate. Specifically, the guide plate 16 can be connected to the jet baffle 14 by a ball bearing to ensure that the guide plate 16 is in a stable position during the rotation process. The flip driving member 17 can select a DC motor, and by controlling the motor to cooperate with the driving shaft to rotate forward and reverse, the guide plate 16 can be adjusted at a specific angle or periodically reciprocated, thereby adjusting the position of the guide plate 16 to adjust different working conditions to meet different strip 4 heating requirements.

[0014] Reference Figure 3 and Figure 4 In the initial state, the guide plate 16 can be arranged horizontally, and the guide plate 16 inside the first working chamber 21 and the guide plate 16 inside the second working chamber 22 are staggered in the arrangement height, so that the first working chamber 21 and the second working chamber 22 are separated into a plurality of independent working unit chambers 23 under the action of the guide plate 16. There is a connecting intersection area 24 between the working unit chamber 23 in the first working chamber 21 and the working unit chamber 23 in the adjacent second working chamber 22. With this design, during the heating process of the strip 4, hot air enters the plurality of independent working unit chambers 23 in the first working chamber 21 and the second working chamber 22 from the air outlet 140, and the hot air is exchanged between the adjacent working unit chambers 23 through the intersection area 24, so that the heating of both sides of the strip 4 is more uniform.

[0015] Reference Figure 5 The body of the guide plate 16 can be made of a metal plate or a composite material plate, which has a certain degree of flexibility and can swing in different directions under the guidance of the furnace body 1. The specific structure of the body of the guide plate 16 can be rectangular or elliptical to meet different heating requirements. For example, the body of the guide plate 16 can be made of stainless steel, which has good temperature resistance and wear resistance and can adapt to high temperature environments. Another way is a composite material plate, such as a carbon fiber composite material, which has high temperature resistance and lightweight characteristics. A compensating soft plate 19 is also installed on the end face of the guide plate 16 in the length direction. The compensating soft plate 19 can remain attached to the inner wall of the working room 2 at all times during the swinging of the guide plate 16, thereby reducing the amount of hot air flowing out from the gap between the guide plate 16 and the inner wall of the working room 2 and not intersecting with the hot air on the other side of the strip 4.

[0016] Reference Figure 5In addition, a compensating brush 18 is provided on the side of the guide plate 16 facing the strip 4, and the compensating brush 18 is against the surface of the strip 4 during the heat treatment process of the strip 4. On the one hand, the compensating brush 18 can compensate for the gap that may appear when the strip 4 passes through the gap of the guide plate 16, and reduce the influence of the hot air directly passing through the gap on the heating uniformity of both sides of the strip 4. On the other hand, the compensating brush 18 can also brush the surface of the strip 4 during its own swing and the conveying of the strip 4, so as to clean the surface of the strip 4. Therefore, in order to cooperate with the collection of dust during the cleaning process, a reserved groove 160 is provided on the top wall of the guide plate 16. The purpose of setting the reserved groove 160 is, on the one hand, to reduce the dead weight of the guide plate 16 and improve its flexibility during the swing process, and on the other hand, to receive the dust on the surface of the strip 4 swept down by the brush. The specific structure of the reserved groove 160 is that the groove opening and the groove bottom are in a circular arc or straight line transition mode to reduce the stress concentration phenomenon.

[0017] The compensation brush 18 can be made of a variety of materials, such as polyurethane material, polyester fiber, etc. For example, the compensation brush 18 can be made of polyurethane material, which has good temperature resistance and wear resistance and can adapt to high temperature environments. Another material is polyester fiber, which has good softness and elasticity and is suitable for low temperature environments. Although the field of this application is the field of thermal processing, the technical solution of this application can be used for cooling or heating the workpiece, so it is within the scope of protection.

[0018] Reference Figure 5 , since the compensation brush 18 is in continuous contact with the strip 4, it is a consumable part. Therefore, the connection method between the compensation brush 18 and the guide plate 16 of the present application can also be diversified. The compensation brush 18 can be connected to the guide plate 16 in a variety of ways, such as pasting, snapping, magnetic attraction, etc. For example, in other embodiments, the compensation brush 18 can be connected to the guide plate 16 by snapping, which is convenient for disassembly and replacement. In this embodiment, the compensation brush 18 can be set on a nylon velvet belt 181, and correspondingly, a nylon hook belt 182 is provided on the end face of the guide plate 16 facing the strip 4, and the convenient installation of the compensation brush 18 is achieved by fitting the nylon velvet belt 181 with the nylon hook belt 182. The nylon velvet belt 181 and the nylon hook belt 182 cooperate with each other, so that the compensation brush 18 can be easily installed on the guide plate 16, and it is easy to replace, which is conducive to daily maintenance / replacement.

[0019] The embodiment of the present application also discloses a vertical heating method for solution heat treatment of high-strength aluminum alloy strip. The strip 4 enters the furnace body 1 from the top of the working room 2. During the downward conveying of the strip 4, hot air enters the first working chamber 21 and the second working chamber 22 from the blast chamber 3 to heat both sides of the strip 4. The working unit chamber 23 in the first working chamber 21 and the working unit chamber 23 in the adjacent second working chamber 22 exchange hot air through the intersection area 24 to reduce the degree of heating between the first working chamber 21 and the second working chamber 22, so that the heating deviation on both sides of the strip 4 is smaller.

[0020] The implementation principle of this embodiment is as follows: by setting staggered guide plates 16 in the internal working room 2 of the vertical heat treatment furnace, a plurality of independent working unit chambers 23 are formed. When the hot air enters the working room 2 from the blast chamber 3, the hot air on both sides of the strip 4 can be exchanged through the intersection area 24, and the air on both sides of the strip 4 can be forced to interact, thereby effectively improving the heating uniformity. The compensating brush 18 is connected to the guide plate 16 to ensure close contact between the strip 4 and the guide plate 16, and reduce the impact of the gap on the heating uniformity. The guide plate 16 cooperates with the flip drive 17 to realize dynamic adjustment during the heating process of the strip 4 by flipping or swinging, and improve the adjustment accuracy of the air interaction. This design solves the problem of uneven heating on both sides of the strip 4, improves the heating uniformity, and enhances the practical application effect of the vertical heat treatment furnace.

[0021] Example 2 Reference Figure 6 and Figure 7 The difference between this embodiment and the first embodiment is that: the two jet baffles 14 are both provided with a bracket 51 through a hinge rotation, and the bracket 51 is provided with an abutment wheel 5 through a shaft rotation. During operation, the two abutment wheels 5 are located on both sides of the strip 4. A tightening elastic member 52 for pushing the abutment wheel 5 toward the strip 4 is provided between the jet baffle 14 and the bracket 51. The tightening elastic member 52 can be a spring to ensure that the abutment wheel 5 stably abuts the surface of the strip 4, so that the abutment wheels 5 on both sides are stably attached to the strip 4 during the heat treatment of the strip 4 and the abutment wheels 5 are stably rotated with the conveyance of the strip 4. In addition, the number of abutment wheels 5 can be set to multiple pairs as needed. By symmetrically abutting multiple pairs of abutment wheels 5 on both sides of the strip 4, the abutment wheels 5 can be tightly attached to the surface of the strip 4 during the heat treatment of the strip 4 to ensure the stable operation of the strip 4. The material of the abutment wheel 5 can be a temperature-resistant material, such as stainless steel, which has good heat resistance and wear resistance. The specific structure of the abutment wheel 5 can be to set a material layer or a coating layer such as an anti-skid layer or a damping layer on its outer edge to increase the friction coefficient between the abutment wheel 5 and the strip 4 and reduce the probability of the abutment wheel 5 slipping.

[0022] Reference Figure 7A linkage mechanism 6 is provided between the abutting wheel 5 and the first guide plate 16. The linkage mechanism 6 includes a push rod 61, a slider 62, a traction rod 63 and a traction groove 64. The slider 62 is slidably connected to the jet baffle 14. For example, the slider 62 is set as a dovetail member and matched with a corresponding dovetail groove to achieve stable sliding. The two ends of the push rod 61 are respectively rotatably connected to the slider 62 and the abutting wheel 5, so that the slider 62 can slide up and down during the rotation of the abutting wheel 5. The bottom of the slider 62 is connected to the traction rod 63, and the bottom of the traction rod 63 (i.e., the end away from the slider 62) is rotatably connected to the traction groove 64. The end of the guide plate 16 is embedded in the traction groove 64, so that the slider 62 can slide up and down to drive the guide plate 16 to swing. The specific working mode of the linkage mechanism 6 is: when the abutting wheel 5 moves with the strip 4, it will drive the push rod 61 to move, thereby pushing the slider 62 to slide along the jet baffle 14, and then drive the traction groove 64 to clamp the guide plate 16 and swing through the traction rod 63. The inner edge width of the traction groove 64 is greater than the thickness of the guide plate 16 to ensure that the guide plate 16 is not stuck by the traction groove 64 during the swinging process.

[0023] Reference Figure 8 In order to further improve the swing stability of the guide plate 16, a plurality of guide wheels 65 are rotatably provided inside the traction trough 64. The guide wheels 65 abut against the guide plate 16 so that the guide plate 16 can swing smoothly and reduce the jamming phenomenon.

[0024] Reference Figure 6 In addition to the first guide plate 16 swinging through the linkage mechanism 6, each guide plate 16 is also provided with a synchronous gear 71 at the rotation point, and the synchronous gear 71 is arranged concentrically with the rotation axis of the guide plate 16. In addition, a steering gear 72 is installed between each two adjacent synchronous gears 71 on the jet baffle 14 through a rotating shaft, and the steering gear 72 is located between the two adjacent synchronous gears 71 and meshes with each other to achieve the motion transmission of several guide plates 16 and the synchronous swing of the guide plates 16 on the same side. For example, in the actual operation process, it can also be set that the swing directions between the several guide plates 16 on both sides are opposite, so that the spatial range of the intersection area 24 is in a constantly changing state during the operation, which is more conducive to the hot air interaction between the working chamber 1 21 and the working chamber 2 22.

[0025] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A vertical heat treatment furnace, comprising a vertical furnace body (1), wherein a flow guide shell (13) is arranged inside the furnace body (1), wherein a pair of jet baffles (14) are arranged inside the flow guide shell (13), wherein the two jet baffles (14) divide the interior of the flow guide shell (13) into three areas: a working room (2) in the middle for a strip (4) to pass through, and a blast chamber (3) with a heating unit to realize hot air circulation located on both sides of the working room (2), wherein the jet baffle (14) has a plurality of blast ports (140), wherein the tops of the two blast chambers (3) are provided with fans (15), wherein the air outlets of the fans (15) are located at the top openings of the blast chambers (3), and the air inlets of the fans (15) are located at the top openings of the working room (2), wherein: The working chamber (2) is divided into a first working chamber (21) and a second working chamber (22) on both sides of the strip (4) when the strip (4) passes through. The jet baffle (14) is provided with a transverse guide plate (16). The guide plates (16) inside the first working chamber (21) and the guide plates (16) inside the second working chamber (22) are arranged alternately in sequence at the setting height. Thus, the first working chamber (21) and the second working chamber (22) are divided into a plurality of independent working unit chambers (23) under the action of the guide plates (16). A connecting intersection area (24) is provided between the working unit chamber (23) in the first working chamber (21) and the working unit chamber (23) in the adjacent second working chamber (22).

2. A vertical heat treatment furnace according to claim 1, characterized in that: A compensating brush (18) is provided on the side of the guide plate (16) facing the strip (4), and the compensating brush (18) abuts against the surface of the strip (4) during the heat treatment process of the strip (4).

3. A vertical heat treatment furnace according to claim 2, characterized in that: The compensating brush (18) is detachably connected to the guide plate (16).

4. A vertical heat treatment furnace according to claim 1, characterized in that: The guide plate (16) is rotatably connected to the jet baffle (14), and the furnace body (1) is provided with a turning driving member (17) for driving the guide plate (16) to rotate.

5. The vertical heat treatment furnace according to claim 1, characterized in that: The jet baffle (14) is rotatably provided with a bracket (51), and the bracket (51) is rotatably provided with an abutment wheel (5). An abutment elastic member (52) is provided between the jet baffle (14) and the bracket (51) for pushing the abutment wheel (5) toward the strip (4). During the heat treatment of the strip (4), the abutment wheels (5) on both sides are in contact with and rotate with the strip (4), and a linkage mechanism (6) is provided between the abutment wheel (5) and the guide plate (16) for driving the guide plate (16) to swing.

6. A vertical heat treatment furnace according to claim 5, characterized in that: The linkage mechanism (6) comprises a push rod (61), a slider (62), a traction rod (63) and a traction groove (64); the slider (62) is slidably connected to the jet baffle (14); two ends of the push rod (61) are rotationally connected to the slider (62) and the abutment wheel (5) respectively; the slider (62) is rotationally connected to the traction rod (63); one end of the traction rod (63) away from the slider (62) is connected to the traction groove (64); and the guide plate (16) is embedded in the traction groove (64).

7. A vertical heat treatment furnace according to claim 6, characterized in that: A guide wheel (65) is rotatably arranged inside the traction trough body (64), and the guide wheel (65) abuts against the guide plate (16).

8. The vertical heat treatment furnace according to claim 5, characterized in that: The guide plate (16) is provided with a synchronous gear (71), and the jet baffle (14) is rotatably provided with a steering gear (72), and the steering gear (72) is located between two adjacent synchronous gears (71) and meshes with each other.

9. The vertical heat treatment furnace according to claim 5, characterized in that: The top wall of the guide plate (16) is provided with a reserved groove (160).

10. A vertical heating method for solution heat treatment of high-strength aluminum alloy strip, characterized in that: The strip (4) enters the furnace body (1) from the top of the working room (2). During the downward conveying of the strip (4), hot air enters the first working room (21) and the second working room (22) from the blast chamber (3) to heat both sides of the strip (4). The working unit chamber (23) in the first working room (21) and the working unit chamber (23) in the adjacent second working room (22) exchange hot air through the intersection area (24) to reduce the degree of heating between the first working room (21) and the second working room (22), so that the heating deviation on both sides of the strip (4) is smaller.

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