Heat treatment machine and heat treatment method for preparation optimization of high-strength and high-toughness aluminum alloy

Abstract

The invention relates to the technical field of heat treatment equipment, and discloses a heat treatment machine for high-strength and high-toughness aluminum alloy preparation optimization and a heat treatment method.The heat treatment machine comprises a moving table, a heating cavity and moving doors, the two moving doors are each provided with a communicating cavity, the moving table is provided with two main air channels, and each main air channel communicates with one communicating cavity; the two sets of communicating cavities communicate with one side of the heating cavity correspondingly, the movable table is further fixedly connected with partition plates, and the two sides of each row of goods shelves are each provided with a set of partition plates. According to the heat treatment machine for preparation optimization of the high-strength and high-toughness aluminum alloy and the heat treatment method, the partition plates can divide the space in the furnace into a plurality of relatively independent heat treatment cavities according to the length of a goods shelf and aluminum alloy castings, and relatively independent airflow is formed in the relatively independent heat treatment cavities to reduce shielding among the castings; and secondly, the partition plate moves out and moves in synchronously along with the moving table, so that the space in the furnace is not occupied, and the moving table does not interfere with entering and exiting of the moving table.

Description

Technical Field

[0001] The present application relates to the technical field of heat treatment equipment, and in particular to a heat treatment machine and a heat treatment method for optimizing the preparation of high-strength and high-toughness aluminum alloys. Background Art

[0002] Heat treatment process is one of the key links in the optimization of aluminum alloy preparation. Among them, aluminum alloy aging treatment is an important process after solid solution treatment of aluminum alloy castings. It can be used for aging heat treatment of aluminum alloy profiles, aluminum alloy die-castings, aluminum alloy wheels, aluminum profile wires, aluminum alloy plates, aluminum alloy mesh plates, pistons, etc., effectively reducing the stress concentration of aluminum alloy materials, reducing deformation, and improving their mechanical strength and toughness.

[0003] When the aging furnace is performing heat treatment, the furnace door is closed and the temperature inside the furnace is controlled by the furnace gas circulation system. The furnace gas flows in one direction, and the furnace gas contacts the aluminum alloy castings in a certain order. On the one hand, there will be a difference in the temperature of the furnace gas when it contacts the front and back aluminum alloys. On the other hand, the front and back aluminum alloy castings may be blocked, so that the aluminum alloy castings at the rear cannot be fully heated and kept warm. As a result, the temperature may be uneven, making the aluminum alloy castings heat treated to achieve suboptimal performance.

[0004] Secondly, the guide structure of the furnace gas circulation system in the furnace may reduce the effective processing space in the furnace and affect the entry and exit of aluminum alloy castings, affecting the efficiency of heat treatment. Summary of the Invention

[0005] The present application proposes a heat treatment machine and a heat treatment method for optimizing the preparation of high-strength and high-toughness aluminum alloys. The partition plate can divide the space in the furnace into several relatively independent heat treatment chambers according to the length of the shelf and the aluminum alloy castings. Relatively independent airflows are formed in the relatively independent heat treatment chambers to reduce the obstruction between the castings, reduce the airflow flow distance, and make the temperature in the furnace more uniform. Secondly, the partition plate moves in and out synchronously with the movable platform, that is, it does not occupy the space in the furnace and does not interfere with the entry and exit of the movable platform.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical solution: a heat treatment machine for optimizing the preparation of high-strength and high-toughness aluminum alloy, comprising a furnace body, both ends of the furnace body are fixedly connected to door frames, the door frames are movably connected to movable doors, the movable doors are connected to a driver, the driver drives the movable doors to move up and down, and both ends of the furnace body are also provided with movable platforms, which can slide in / out of the furnace body, an aging chamber and a heating chamber are provided inside the furnace body, the heating chamber is provided above the aging chamber, a heater is provided in the heating chamber, a driving fan is provided in the heating chamber, and a connecting chamber is provided on the two sets of movable doors Two groups of main air ducts are provided on the movable platform, and the two groups of main air ducts are respectively connected to a group of connecting cavities, and the two groups of connecting cavities are respectively connected to one side of the heating chamber. The movable platform is also fixedly connected to a partition plate, and a group of partition plates are provided on both sides of each row of shelves. A partition is provided inside the partition plate, and the partition divides the cavity inside the partition plate into relatively independent air outlet cavities and air intake cavities. The air outlet cavity is located at the rear side, and the side walls of the air outlet cavity and the air intake cavity are densely covered with through holes. All the air outlet cavities except the rearmost side are connected to the main air duct connected to the high pressure, and all the air intake cavities except the frontmost side are connected to the main air duct connected to the low pressure.

[0007] A high-pressure chamber and a low-pressure chamber are respectively provided on both sides of the heating chamber. The high-pressure chamber is located on the front side. Drive fans are provided between the high-pressure chamber and the heating chamber, and between the low-pressure chamber and the heating chamber. The high-pressure chamber forms high pressure, and the low-pressure chamber forms low pressure. The high and low pressures act on the air intake chamber and the air outlet chamber through the connecting chamber, making the furnace gas temperature more uniform and the airflow more stable.

[0008] Furthermore, the upper ends of the high-pressure chamber and the low-pressure chamber are both provided with air outlets, the movable door includes a door panel, and the connecting cavity is provided in the door panel. The door panel is provided with an upper pressure plate at the position corresponding to the air outlet, and an upper connecting port is provided on the upper pressure plate, which is connected to the connecting cavity. The side wall of the door panel is provided with a lower pressure plate, and a lower connecting port is provided on the lower pressure plate, which is connected to the door panel. An inlet is provided on one side of the main airway. When the movable platform contacts the door panel on either side, the two lower connecting ports are respectively aligned with the two inlets. When the movable door moves downward to close the furnace body, the upper pressure plate presses the top of the furnace body, and the lower pressure plate presses the main airway.

[0009] Furthermore, it also includes an external air source, and the inlet can be connected to the external air source through an interface. After the aging treatment moving platform is moved out, the external air source is connected to one of the inlets, so that the partition plate blows out air to cool the aluminum alloy casting.

[0010] Furthermore, the main air duct includes a connecting box, the mobile platform is provided with an overhead layer, and the connecting box is provided in the overhead layer.

[0011] Furthermore, the communication box is square, with a horizontal surface on the top, and is provided with multiple groups of flow outlets, each of which is equipped with a corresponding plug.

[0012] Further, the bottom of the partition plate is provided with a connecting seat, two groups of flow cavities are arranged in the connecting seat, the two groups of flow cavities are longitudinally arranged, and the flow outlets on the two groups of communication boxes are always longitudinally aligned.

[0013] A high-strength and high-toughness aluminum alloy preparation optimization heat treatment method uses the high-strength and high-toughness aluminum alloy preparation optimization heat treatment machine to perform heat treatment on the aluminum alloy castings after solid solution treatment.

[0014] The present application has the following advantages: The high-strength and high-toughness aluminum alloy preparation optimization heat treatment machine and heat treatment method provided by the present application can divide the space in the furnace into several relatively independent heat treatment cavities according to the shelves and the length of the aluminum alloy castings, and one side of the partition plate forms high pressure and the other side forms low pressure. Relatively independent air flows are formed in the relatively independent heat treatment cavities to heat and preserve the aluminum profiles. On the one hand, the air flows can flow along the inner and outer surfaces of the aluminum alloy castings at the same time, enhancing the heating and preserving effect. On the other hand, the castings will not be blocked, the flow distance of the air flow is short, the temperature in the furnace is more uniform, and the quality of the aging treatment is ensured.

[0015] The partition plate moves out and in synchronously with the moving table, that is, it does not occupy the space in the furnace and does not interfere with the movement of the moving table. In addition, since the bottom of the moving table is close to the bottom of the furnace and the air flow mostly occurs between the two partition plates, the furnace is clean and the quality of the aging treatment is further ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort based on the provided drawings: Figure 1 is a schematic view of the present application; Figure 2 is a front view of the furnace body in the present application; Figure 3 is a top view of the furnace body in the present application; Figure 4 is a perspective view of the furnace body in the present application; Figure 5 is a schematic view of the moving door in the present application; Figure 6 is a side view of the partition plate in the present application; Figure 7It is a top view of the mobile station in the present invention.

[0017] In the figure: 1. Furnace body; 101. Aging chamber; 102. Heating chamber; 103. Low-pressure chamber; 104. High-pressure chamber; 105. Heater; 106. Driving fan; 107. Air outlet; 2. Door frame; 3. Movable door; 301. Door panel; 302. Connecting chamber; 303. Upper connecting port; 304. Upper pressure plate; 305. Lower connecting port; 306. Lower pressure plate; 4. Driver; 5. Moving platform; 6. Main air duct; 601. Connecting box; 602. Outlet; 603. Inlet; 7. Partition plate; 701. Connecting seat; 702. Partition plate; 703. Air outlet chamber; 704. Air intake chamber; 705. Flow chamber. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] For example 1, please refer to Figure 1 , a heat treatment machine for optimizing the preparation of high-strength and high-toughness aluminum alloys, including a furnace body 1, both ends of the furnace body 1 are fixedly connected to a door frame 2, the door frame 2 is movably connected to a movable door 3, the movable door 3 is connected to a driver 4, the driver 4 drives the movable door 3 to move up and down, in this embodiment, the driver 4 includes a motor, a screw rod and a guide rod, the screw rod is threadedly connected to the movable door 3, the motor drives the screw rod to rotate, and then drives the movable door 3 to move up and down, in other embodiments, the driver 4 can also be a cylinder, and both ends of the furnace body 1 are further provided with a movable platform 5, the furnace body 1 and the ground are provided with a guide structure, the movable platform 5 is connected to a traction component or integrated with a traction component ( Figure 1 (not shown) so that the movable platform 5 can move along the guide structure, driving the movable platform 5 to slide into / out of the furnace body 1.

[0020] See also Figure 2-Figure 4The interior of the furnace body 1 is provided with an aging chamber 101 and a heating chamber 102. The aging chamber 101 and the heating chamber 102 are independent of each other. The heating chamber 102 is provided above the aging chamber 101. A heater 105 is provided in the heating chamber 102. In this embodiment, the heater 105 is a copper tube. The burner burns on one side of the copper tube. The flue gas flows in the heater 105 and flows out from the other end. The heater 105 heats the furnace gas flowing into the heating chamber 102. In other embodiments, the heater 105 can be a heating tube. There is a driving fan 106, which drives the furnace gas to move. The two sets of movable doors 3 are each provided with a connecting cavity 302. The movable platform 5 is provided with two sets of main air ducts 6. The two sets of main air ducts 6 are each connected to a set of connecting cavities 302. The two sets of connecting cavities 302 are respectively connected to one side of the heating chamber 102. The movable platform 5 is also fixedly connected to a dividing plate 7. The number of dividing plates 7 is set according to the number of rows of shelves. If 3 rows of shelves are placed on the movable platform 5, then 4 sets of dividing plates 7 are provided. A set of dividing plates 7 is provided on both sides of each row of shelves. Please refer to Figure 6 A partition 702 is provided inside the dividing plate 7, and the partition 702 divides the cavity inside the dividing plate 7 into an air outlet cavity 703 and an air intake cavity 704. The air intake cavity 704 and the air outlet cavity 703 are arranged front to back, and the front side refers to the direction of the flow of furnace gas in the heating cavity 102. The side walls of the air outlet cavity 703 and the air intake cavity 704 are densely covered with through holes, and the air outlet cavity 703 and the air intake cavity 704 are respectively connected to the two groups of main air ducts 6.

[0021] See also Figure 2 and Figure 6 , drive the fan 106 to make the furnace gas flow to the left, the left side is the front, the front side is high pressure, and the back side is low pressure. The main air channel 6 connected to the left door panel 301 is the main air channel A, and the main air channel 6 connected to the right door panel 301 is the main air channel B. The air outlet cavity 703 is connected to the main air channel A, and the air intake cavity 704 is connected to the main air channel B. The air intake cavity 704 located at the front is not connected to the main air channel B, and the air outlet cavity 703 located at the back is not connected to the main air channel A. The through holes on the adjacent air outlet cavity 703 and the air intake cavity 704 are always opposite to each other. 703 is relatively high pressure, and the air intake cavity 704 is relatively low pressure. An air flow is formed between the adjacent air outlet cavity 703 and the air intake cavity 704. In this way, an independent air flow is formed in each shelf area to heat and keep the aluminum alloy castings on the shelf warm, thus avoiding mutual obstruction of the aluminum alloy castings. Moreover, the furnace gas flow distance in a single area is shorter and the temperature change is smaller, so that the temperature in the furnace is more uniform, which is more conducive to maintaining the target temperature of the aluminum alloy castings. Secondly, the partition plate 7 moves with the movable platform 5, which neither occupies the space in the furnace nor interferes with the entry and exit of the aluminum alloy.

[0022] See also Figure 2-Figure 4Two sides of the heating cavity 102 are respectively provided with a high-pressure cavity 104 and a low-pressure cavity 103, the high-pressure cavity 104 is located at the front side, and a driving fan 106 is arranged between the high-pressure cavity 104 and the heating cavity 102 and between the low-pressure cavity 103 and the heating cavity 102, the high-pressure cavity 104 forms high pressure, and the low-pressure cavity 103 forms low pressure, the high and low pressures act on the air suction cavity 704 and the air outlet cavity 703 through the communication cavity 302, so that the furnace gas temperature is more uniform, and the airflow is more stable.

[0023] Please refer to Figure 2 , Figure 4 and Figure 7 , the upper ends of the high-pressure cavity 104 and the low-pressure cavity 103 are respectively provided with an air outlet 107, the moving door 3 comprises a door plate 301, the communication cavity 302 is arranged in the door plate 301, the door plate 301 is provided with an upper pressing plate 304 at a position corresponding to the air outlet 107, the upper pressing plate 304 is provided with an upper connecting port 303, the upper connecting port 303 is provided with a sealing structure around the upper connecting port 303, the upper connecting port 303 is in communication with the communication cavity 302, the side wall of the door plate 301 is provided with a lower pressing plate 306, the lower pressing plate 306 is provided with a lower connecting port 305, the lower connecting port 305 is in communication with the door plate 301, the lower connecting port 305 is provided with a sealing structure around the lower connecting port 305, one side of the main air duct 6 is provided with a flow inlet 603, when the moving platform 5 is in contact with any one of the door plates 301, the two lower connecting ports 305 are respectively aligned with the two flow inlets 603, that is, the length of the moving platform 5 is close to that of the aging cavity 101, in order to improve the space utilization, the width of the moving platform 5 is also close to that of the aging cavity 101, when the moving door 3 moves downward to close the furnace body 1, the upper pressing plate 304 presses the top of the furnace body 1, the lower pressing plate 306 presses the main air duct 6, at the same time, the upper connecting port 303 is in communication with the air outlet 107, and the lower connecting port 305 is in communication with the flow inlet 603, so that the furnace gas can circulate and flow, when the moving door 3 is opened, the moving platform 5 is disturbed to enter and exit.

[0024] The existing aging furnace generally blows air to the aluminum alloy castings from the side through the fan after the aging heating and heat preservation are completed, the side air is easily blocked by the aluminum alloy castings, and individual surfaces cannot be forcibly air-cooled, in the embodiment, after the moving platform 5 moves out of the furnace body 1, one of the flow inlets 603 is connected to an external air source through an interface, the external air source supplies air, and the dividing plate 7 blows air, the air blown by the dividing plate 7 ensures that the airflow can be more uniformly in contact with each surface of the aluminum alloy castings, especially for wires, the cooling air can flow along the inner and outer walls of the wires, so that the air cooling is faster.

[0025] Please refer to Figure 7The main air duct 6 comprises a communication box 601 arranged at the bottom of the moving table 5, the moving table 5 is provided with an overhead layer, the communication box 601 is arranged in the overhead layer and does not contact the shelf, so that the communication box 601 is prevented from being deformed by force, the communication box 601 is square, the top of the communication box 601 is provided with a horizontal surface, a plurality of groups of outlet ports 602 are arranged on the communication box 601, the air outlet cavity 703 and the air suction cavity 704 are communicated with the main air duct 6 through the outlet ports 602, the outlet ports 602 at positions where the partition plates 7 need to be arranged are kept open, and the outlet ports 602 at other positions are blocked by plugs, so that the partition plates 7 can be arranged at any position, and the length of the shelf can be adapted.

[0026] Please refer to Figure 6 The bottom of the partition plate 7 is provided with a connecting seat 701, two groups of flow cavities 705 are arranged in the connecting seat 701, the flow cavities 705 are provided with sealing structures around the flow cavities 705, the two groups of flow cavities 705 are arranged longitudinally, the longitudinal direction refers to the direction perpendicular to the paper, the outlet ports 602 on the two groups of communication boxes 601 are always longitudinally aligned, when the partition plate 7 is arranged on the moving table 5, the two groups of flow cavities 705 are respectively aligned with two outlet ports 602 at the same position, and the two groups of flow cavities 705 are respectively aligned with the air suction cavity 704 and the air outlet cavity 703, when the partition plate 7 is arranged, the main air duct A is communicated with the air outlet cavity 703 through one group of outlet ports 602 and flow cavities 705, and the main air duct B is communicated with the air suction cavity 704 through the other group of outlet ports 602 and flow cavities 705. Embodiment two

[0027] A heat treatment method for preparing and optimizing a high-strength and high-toughness aluminum alloy, which uses the heat treatment machine for preparing and optimizing a high-strength and high-toughness aluminum alloy to perform heat treatment on an aluminum alloy casting after solid solution treatment.

[0028] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heat treatment machine for optimizing the preparation of high-strength and high-toughness aluminum alloys, comprising a furnace body (1), both ends of the furnace body (1) are fixedly connected to door frames (2), the door frames (2) are movably connected to a movable door (3), the movable door (3) is connected to a driver (4), the driver (4) drives the movable door (3) to move up and down, and both ends of the furnace body (1) are also provided with a movable platform (5), the movable platform (5) can slide into / out of the furnace body (1), and is characterized in that: The furnace body (1) is provided with an aging chamber (101) and a heating chamber (102) inside. The heating chamber (102) is provided above the aging chamber (101). A heater (105) is provided in the heating chamber (102). A driving fan (106) is provided in the heating chamber (102). The two groups of movable doors (3) are provided with a connecting chamber (302). The movable platform (5) is provided with two groups of main air ducts (6). The two groups of main air ducts (6) are respectively connected to a group of connecting chambers (302). The two groups of connecting chambers (302) are respectively connected to one side of the heating chamber (102). The movable platform (5) A partition plate (7) is also fixedly connected. A group of partition plates (7) is provided on both sides of each row of shelves. A partition plate (702) is provided inside the partition plate (7). The partition plate (702) divides the cavity inside the partition plate (7) into relatively independent air outlet cavities (703) and air intake cavities (704). The air outlet cavity (703) is located at the rear side. The side walls of the air outlet cavity (703) and the air intake cavity (704) are densely covered with through holes. All air outlet cavities (703) except the rearmost side are connected to the main air duct (6) connected to the high pressure, and all air intake cavities (704) except the frontmost side are connected to the main air duct (6) connected to the low pressure.

2. A heat treatment machine for optimizing the preparation of high-strength and high-toughness aluminum alloy according to claim 1, characterized in that: A high-pressure chamber (104) and a low-pressure chamber (103) are respectively provided on both sides of the heating chamber (102), the high-pressure chamber (104) being located at the front side, and a driving fan (106) is provided between the high-pressure chamber (104) and the heating chamber (102), as well as between the low-pressure chamber (103) and the heating chamber (102).

3. A heat treatment machine for optimizing the preparation of high-strength and high-toughness aluminum alloy according to claim 2, characterized in that: The upper ends of the high-pressure chamber (104) and the low-pressure chamber (103) are both provided with an air outlet (107). The movable door (3) includes a door panel (301). The communicating chamber (302) is provided in the door panel (301). An upper pressure plate (304) is provided on the door panel (301) at a position corresponding to the air outlet (107). An upper connecting port (303) is provided on the upper pressure plate (304). The upper connecting port (303) is communicated with the communicating chamber (302). A lower pressure plate (306) is provided on the side wall of the door panel (301). The lower pressure plate (306) is provided with a lower connecting port (305), which is communicated with the door panel (301), and an inlet (603) is provided on one side of the main air duct (6). When the movable platform (5) contacts the door panel (301) on either side, the two lower connecting ports (305) are aligned with the two inlet ports (603) respectively. When the movable door (3) moves downward to close the furnace body (1), the upper pressure plate (304) presses the top of the furnace body (1), and the lower pressure plate (306) presses the main air duct (6).

4. A heat treatment machine for optimizing the preparation of high-strength and high-toughness aluminum alloy according to claim 3, characterized in that: It also includes an external air source, and the inlet (603) can be connected to the external air source through an interface. After the aging treatment moving platform (5) is moved out, the external air source is connected to one of the inlets (603), so that the dividing plate (7) blows out air to cool the aluminum alloy casting.

5. The heat treatment machine for optimizing the preparation of high-strength and high-toughness aluminum alloy according to claim 1, characterized in that: The main air channel (6) includes a communication box (601), the mobile platform (5) is provided with an overhead layer, and the communication box (601) is arranged in the overhead layer.

6. The heat treatment machine for optimizing the preparation of high-strength and high-toughness aluminum alloy according to claim 5, characterized in that: The communication box (601) is square, with a horizontal surface on the top. The communication box (601) is provided with multiple groups of flow outlets (602), and the flow outlets (602) are equipped with corresponding plugs.

7. A heat treatment machine for optimizing the preparation of high-strength and high-toughness aluminum alloy according to claim 6, characterized in that: A connecting seat (701) is provided at the bottom of the dividing plate (7), and two groups of flow chambers (705) are provided in the connecting seat (701). The two groups of flow chambers (705) are arranged longitudinally, and the outflow ports (602) on the two groups of connecting boxes (601) are always kept longitudinally aligned.

8. A heat treatment method for optimizing the preparation of high-strength and high-toughness aluminum alloy, characterized in that: A heat treatment machine for optimizing the preparation of high-strength and high-toughness aluminum alloy according to any one of claims 1 to 7 is used to heat treat aluminum alloy castings after solid solution treatment.

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