Aluminum alloy heat treatment device and heat treatment method

Abstract

The invention discloses an aluminum alloy heat treatment device and a heat treatment method, and belongs to the field of aluminum alloy heat treatment. An aluminum alloy heat treatment device comprises a heating furnace and a heater fixed to the side wall of the heating furnace, a sealing plate is attached to the feeding port end of the heating furnace in a sliding mode, and a lifting part for driving the sealing plate to move up and down is arranged on the side wall of the feeding port end of the heating furnace; through the repulsion effect between the lower magnetic plate and the upper magnetic plate, in the rotating process of the air exhaust shaft, air in the heating furnace can be continuously extracted and filled into the air storage box, so that the interior of the heating furnace is gradually converted into a vacuum state, the adverse effects such as oxidation generated by air during heat treatment of aluminum alloy are avoided, and the heat treatment effect is improved; and meanwhile, a belt wheel set is matched to drive a second lead screw to rotate, so that a gas guide plate moves in the heating furnace, impurities attached to the aluminum alloy casting part are sucked away, the cleanliness of the surface of the aluminum alloy casting part is improved, and the final treatment quality of the aluminum alloy casting part is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum alloy heat treatment, and in particular to an aluminum alloy heat treatment device and a heat treatment method. Background Art

[0002] Aluminum alloy heat treatment is a process that changes its microstructure by heating to improve its mechanical properties. This treatment is usually used to improve the strength, hardness or other specific properties of aluminum alloys. Heat treatment methods mainly include solution treatment, aging hardening and other steps.

[0003] At present, when the existing aluminum alloy heat treatment device is in use, a certain amount of air will remain in the heating furnace. During the heating process, the oxygen in the air can easily cause the aluminum alloy to produce an oxidation reaction, thereby reducing the heat treatment effect of the aluminum alloy; and the heat in the heating furnace is dispersed in the entire cavity, and it is impossible to achieve centralized heating of the aluminum alloy casting, which reduces the heat treatment efficiency. Therefore, an aluminum alloy heat treatment device and a heat treatment method are proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art that the residual air in the heating furnace easily causes oxidation of the aluminum alloy, resulting in reduced heat treatment effect of the aluminum alloy; and the heat in the heating furnace is relatively dispersed, and centralized heating of the aluminum alloy castings cannot be achieved, thereby reducing the heat treatment efficiency. A heat treatment device and heat treatment method for aluminum alloy are proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An aluminum alloy heat treatment device comprises a heating furnace and a heater fixed on its side wall, a sealing plate is slidably fitted on the feed port end of the heating furnace, a lifting part for driving the sealing plate to move up and down is arranged on the side wall of the feed port end of the heating furnace, and also comprises: a vacuum component, which is arranged on the heating furnace and is used to extract air in the heating furnace; and an inlet and outlet component, which is arranged at the bottom of the heating furnace and is used to deliver aluminum alloy castings into or out of the heating furnace.

[0007] In order to improve the processing quality of aluminum alloy castings, preferably, the vacuum assembly includes an air storage box, which is fixed on the top of the heating furnace, and an exhaust pipe is fixedly connected to the air storage box, both ends of the exhaust pipe are connected to the inner cavity of the heating furnace, the middle part of the exhaust pipe is fixed and connected to a piston box, an upper magnetic plate is slidably connected to the piston box, a return spring is fixedly connected between the top of the upper magnetic plate and the inner wall of the piston box, an exhaust shaft is rotatably connected to the piston box, a lower magnetic plate is fixedly connected to the outer wall of the exhaust shaft, and the lower magnetic plate and the upper magnetic plate repel each other magnetically, both sides of the piston box are fixed and connected to exhaust pipes, and one-way valves are provided in the exhaust pipe and the exhaust pipe, an exhaust motor is fixedly connected to the top of the heating furnace, and one end of the exhaust shaft passes through the air storage box and is fixedly connected to the output shaft end of the exhaust motor.

[0008] Furthermore, guide grooves are provided on both sides of the inner wall of the heating furnace, and second screw rods are rotatably connected in the guide grooves on both sides. A limiting slider is threadedly sleeved on the second screw rod, and the limiting slider slides in close contact with the inner wall of the guide groove. An air guide plate is fixedly connected to the side wall of the limiting slider, and air guide grooves are provided at equal intervals on the side where the air guide plates on both sides are close to each other. An air guide pipe is fixed on and connected to the air guide plate, and the top of the air guide pipe is fixed and connected to an end of the exhaust pipe extending into the heating furnace. The end of the second screw rod passes through the heating furnace and is connected to the exhaust shaft through a pulley group.

[0009] In order to improve the heat treatment effect, preferably, pneumatic boxes are fixedly connected to both sides of the outer wall of the heating furnace, the end of the second screw rod passes through the pneumatic box and is rotatably connected thereto, a pneumatic impeller is fixedly connected to the outer wall of the second screw rod located in the pneumatic box, the top of the pneumatic box is fixed and connected to a power air duct, the other end of the power air duct is connected to the inner cavity of the air storage box, and a solenoid valve is arranged in the power air duct, and an air outlet groove is opened on the side wall of the pneumatic box.

[0010] Furthermore, a nitrogen tank is fixedly connected to the top of the gas storage box, and nitrogen pipes are respectively fixed and connected to the two sides of the nitrogen tank. The other end of the nitrogen pipe passes through the gas storage box and is fixed and connected to the air extraction pipe, and a solenoid valve is arranged in the nitrogen pipe.

[0011] In order to smoothly realize continuous air extraction, preferably, a limit strip is fixedly connected above the connecting port of the air extraction pipe in the piston box, and the repulsive force generated between the lower magnetic plate and the upper magnetic plate is greater than the thrust required for the return spring to be compressed.

[0012] In order to facilitate material loading and unloading, preferably, the material loading and unloading assembly includes two transport rails, the two transport rails are respectively fixed on both sides of the bottom of the inner cavity of the heating furnace, and moving blocks are slidably sleeved on the two transport rails, and a loading plate is fixedly connected between the tops of the moving blocks on both sides, and a limiting guide groove is provided on the side wall of the transport rail on one side, and a third screw rod is rotatably connected in the limiting guide groove, and a pushing block is threadedly sleeved on the outer wall of the third screw rod, the pushing block is fixedly connected to the moving block, and the end of the transport rail is fixedly connected to the material loading and unloading motor, and the end of the third screw rod is fixedly connected to the output end of the material loading and unloading motor.

[0013] Furthermore, sealing grooves are provided on both sides of the sealing plate, the sealing grooves are aligned with the transport rails in vertical alignment, and the inner diameter of the sealing grooves is equal to the outer diameter of the transport rails.

[0014] Further, preferably, the lifting part includes a first screw rod, which is rotatably connected to the side wall of the feed port end of the heating furnace, and the other side of the feed port end of the heating furnace is fixedly connected to a limiting guide rod, the sealing plate is sleeved between the first screw rod and the limiting guide rod, and the first screw rod and the sealing plate are threadedly connected, the limiting guide rod and the sealing plate are slidably connected, and a sealing motor is fixedly connected to the top of the heating furnace, and the output end of the sealing motor is fixedly connected to the top of the first screw rod.

[0015] A method for heat treating an aluminum alloy, comprising the following steps:

[0016] Step 1: Place the aluminum alloy casting to be heat treated into a heating furnace, and seal the heating furnace;

[0017] Step 2: Expel the air from the heating furnace;

[0018] Step 3: Heat the heating furnace and push the heat to the aluminum alloy casting;

[0019] Step 4: After the heat treatment is completed, the aluminum alloy casting is transported out of the heating furnace.

[0020] Compared with the prior art, the present invention provides an aluminum alloy heat treatment device and a heat treatment method, which have the following beneficial effects:

[0021] 1. The aluminum alloy heat treatment device, through the repulsive effect between the lower magnetic plate and the upper magnetic plate, will continuously extract the gas in the heating furnace and fill it into the air storage box during the rotation of the exhaust shaft, so that the interior of the heating furnace is gradually transformed into a vacuum state, avoiding the adverse effects of air on the aluminum alloy during heat treatment, such as oxidation, thereby improving the heat treatment effect; at the same time, the pulley group drives the second screw to rotate, so that the air guide plate moves in the heating furnace, thereby removing impurities attached to the aluminum alloy casting, improving the cleanliness of the surface of the aluminum alloy casting, and ensuring its final treatment quality.

[0022] 2. The aluminum alloy heat treatment device drives the pneumatic impeller to rotate through the high-pressure gas stored in the gas storage box, thereby driving the second screw to rotate, so that the air guide plate moves along the second screw in the heating furnace cavity, and at the same time, the solenoid valve of the nitrogen pipe is opened. Under the action of the negative pressure in the heating furnace, nitrogen will quickly enter the heating furnace, and along with the movement of the air guide plate, the nitrogen will push the heat to move to the aluminum alloy casting to achieve centralized heating, which ensures a safe heat treatment gas environment and effectively improves the heat treatment efficiency.

[0023] 3. The aluminum alloy heat treatment device can move the sealing plate and the loading plate, which makes it convenient to close and open the heating furnace and to send the aluminum alloy castings into or out of the heating furnace, thereby improving the convenience of the heat treatment operation and ensuring the heat treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The overall structure of an aluminum alloy heat treatment device proposed by the present invention is shown in FIG. Figure 1 ;

[0025] Figure 2 The overall structure of an aluminum alloy heat treatment device proposed by the present invention is shown in FIG. Figure 2 ;

[0026] Figure 3 Aluminum alloy heat treatment device proposed by the present invention Figure 2 A schematic diagram of the enlarged structure of the middle A area;

[0027] Figure 4 A schematic diagram of the internal structure of a heating furnace of an aluminum alloy heat treatment device proposed by the present invention;

[0028] Figure 5 A schematic diagram of a half-section structure of an aluminum alloy heat treatment device proposed by the present invention;

[0029] Figure 6 Aluminum alloy heat treatment device proposed by the present invention Figure 5 Schematic diagram of the enlarged structure of the middle B area;

[0030] Figure 7Aluminum alloy heat treatment device proposed by the present invention Figure 5 Schematic diagram of the enlarged structure of the middle C area;

[0031] Figure 8 This is a schematic diagram of the half-section structure of a transport guide rail of an aluminum alloy heat treatment device proposed in the present invention.

[0032] In the figure: 1, heating furnace; 2, heater; 3, sealing plate; 31, sealing groove; 4, air storage box; 41, exhaust pipe; 42, piston box; 421, exhaust pipe; 422, limit strip; 43, upper magnetic plate; 431, return spring; 44, exhaust shaft; 441, lower magnetic plate; 45, exhaust motor; 5, guide groove; 51, second screw rod; 52, limit slider; 53, air guide plate; 531, air guide groove ; 532, air guide pipe; 54, pulley assembly; 6, pneumatic box; 61, pneumatic impeller; 62, power air duct; 63, nitrogen tank; 631, nitrogen pipe; 64, air outlet slot; 7, transport guide rail; 71, moving block; 72, loading plate; 73, limiting guide groove; 74, third screw rod; 741, pushing block; 75, feeding and discharging motor; 8, first screw rod; 81, limiting guide rod; 82, sealing motor. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] Embodiment 1:

[0036] Reference Figure 1-Figure 8 , an aluminum alloy heat treatment device, including a heating furnace 1 and a heater 2 fixed on the side wall thereof, a sealing plate 3 is slidably fitted on the feed port end of the heating furnace 1, and a lifting part for driving the sealing plate 3 to move up and down is arranged on the side wall of the feed port end of the heating furnace 1, and also includes: a vacuum component, the vacuum component is arranged on the heating furnace 1, and the vacuum component is used to extract the air in the heating furnace 1; the inlet and outlet component is arranged at the bottom of the heating furnace 1, and the inlet and outlet component is used to deliver the aluminum alloy casting into or out of the heating furnace 1.

[0037] Reference Figure 1 , Figure 2 and Figure 8 The lifting part includes a first screw rod 8, which is rotatably connected to the side wall of the feed inlet end of the heating furnace 1, and the other side of the feed inlet end of the heating furnace 1 is fixedly connected to a limiting guide rod 81, and the sealing plate 3 is sleeved between the first screw rod 8 and the limiting guide rod 81, and the first screw rod 8 and the sealing plate 3 are threadedly connected, and the limiting guide rod 81 and the sealing plate 3 are slidably connected. A sealing motor 82 is fixedly connected to the top of the heating furnace 1, and the output end of the sealing motor 82 is fixedly connected to the top of the first screw rod 8; the feeding and discharging assembly includes two transport guide rails 7, and the two transport guide rails 7 are respectively fixed Fixed on both sides of the bottom of the inner cavity of the heating furnace 1, two transport guide rails 7 are slidably sleeved with moving blocks 71, and a loading plate 72 is fixedly connected between the tops of the moving blocks 71 on both sides. A limiting guide groove 73 is opened on the side wall of one side of the transport guide rail 7, and a third screw rod 74 is rotatably connected in the limiting guide groove 73. A pushing block 741 is threadedly sleeved on the outer wall of the third screw rod 74, and the pushing block 741 is fixedly connected to the moving block 71. The end of the transport guide rail 7 is fixedly connected to the feed and discharge motor 75, and the end of the third screw rod 74 is fixedly connected to the output end of the feed and discharge motor 75.

[0038] Through the arrangement of the above structure, the display rack with the aluminum alloy castings is hoisted onto the loading plate 72, and then the feeding and unloading motor 75 is turned on to drive the third screw rod 74 to rotate, so that the pushing block 741 slides along the third screw rod 74, thereby driving the loading plate 72 to move along the transport guide rail 7 into the heating furnace 1. When the loading plate 72 is moved, the sealing motor 82 is turned on to drive the first screw rod 8 to rotate, so that the sealing plate 3 moves downward along the first screw rod 8, and finally the feeding port of the heating furnace 1 is closed, thereby ensuring the heat treatment effect, facilitating the feeding and unloading operations, and effectively improving the heat treatment efficiency.

[0039] Reference Figure 1 Among them, sealing grooves 31 are opened on both sides of the sealing plate 3, the sealing grooves 31 are aligned with the transport guide rail 7 up and down, and the inner diameter of the sealing grooves 31 is equal to the outer diameter of the transport guide rail 7, which can effectively ensure the sealing of the heating furnace 1, avoid waste caused by heat dissipation, and improve energy saving effects.

[0040] Reference Figure 4-Figure 7The vacuum assembly comprises an air storage box 4, which is fixed on the top of the heating furnace 1. An exhaust pipe 41 is fixedly connected in the air storage box 4. Both ends of the exhaust pipe 41 are communicated with the inner cavity of the heating furnace 1. A piston box 42 is fixed in the middle of the exhaust pipe 41 and is communicated with. An upper magnetic plate 43 is slidably connected in the piston box 42. A return spring 431 is fixedly connected between the top of the upper magnetic plate 43 and the inner wall of the piston box 42. An exhaust shaft 44 is rotatably connected in the piston box 42. A lower magnetic plate 441 is fixedly connected to the outer wall of the exhaust shaft 44. The lower magnetic plate 441 and the upper magnetic plate 43 repel each other magnetically. Exhaust pipes 421 are fixedly connected on both sides of the piston box 42. Check valves are arranged in the exhaust pipe 421 and the exhaust pipe 41. An exhaust motor 45 is fixedly connected to the top of the heating furnace 1. One end of the exhaust shaft 44 passes through the air storage box 4 and is fixedly connected to the output shaft end of the exhaust motor 45. The second screw rod 51 is rotatably connected in the guide grooves 5 on both sides, and a limit slider 52 is threadedly sleeved on the second screw rod 51, and the limit slider 52 slides in contact with the inner wall of the guide groove 5, and an air guide plate 53 is fixedly connected to the side wall of the limit slider 52. Air guide grooves 531 are evenly spaced on the side where the air guide plates 53 on both sides are close to each other, and an air guide pipe 532 is fixed and connected to the air guide plate 53. The top of the air guide pipe 532 is fixed and connected to the end of the exhaust pipe 41 extending into the heating furnace 1, and the end of the second screw rod 51 passes through the heating furnace 1 and is connected to the exhaust shaft 44 through a pulley group 54; a limit strip 422 is fixedly connected to the piston box 42 above the connecting port of the exhaust pipe 41, and the repulsive force generated between the lower magnetic plate 441 and the upper magnetic plate 43 is greater than the thrust required for the reset spring 431 to be compressed.

[0041] It should be noted that the one-way valve in the exhaust pipe 41 can only move the gas in the heating furnace 1 into the piston box 42; the one-way valve in the exhaust pipe 421 can only move the gas in the piston box 42 into the gas storage box 4.

[0042] By setting the above structure, the exhaust motor 45 is turned on to drive the exhaust shaft 44 to rotate, so that the lower magnetic plate 441 rotates in the piston box 42. At this time, the repulsion between the lower magnetic plate 441 and the upper magnetic plate 43 will cause the upper magnetic plate 43 to move upward, thereby generating a suction effect in the lower cavity of the piston box 42, thereby opening the one-way valve in the exhaust pipe 41, so that the gas in the heating furnace 1 is sucked into the piston box 42 along the exhaust pipe 41. After the lower magnetic plate 441 and the upper magnetic plate 43 are separated from the repulsive area, the reset spring 43 1, the upper magnetic plate 43 will move downward and reset, thereby compressing the gas in the piston box 42 and opening the one-way valve in the exhaust pipe 421, so that the gas in the piston box 42 enters the gas storage box 4 along the exhaust pipe 421, and so on. The gas in the heating furnace 1 will continuously move into the gas storage box 4, thereby reducing the original gas in the heating furnace 1, and gradually turning the interior of the heating furnace 1 into a vacuum state, thereby effectively avoiding the effects of oxygen in the air on oxidation of the aluminum alloy during heat treatment, thereby improving the heat treatment effect. And with the rotation of the exhaust shaft 44, the rotation of the pulley group 54 will drive the second screw rod 51 to rotate, so that the air guide plate 53 moves back and forth along the second screw rod 51, and the exhaust pipe 41 is connected to the inner cavity of the air guide plate 53. The suction effect generated in the exhaust pipe 41 will eventually be transmitted to the air guide groove 531. At this time, along with the movement of the air guide plate 53, impurities attached to the aluminum alloy casting will be sucked away, thereby improving the cleanliness of the surface of the aluminum alloy casting and improving the final heat treatment quality of the aluminum alloy casting.

[0043] Reference Figure 1-Figure 5 , wherein, pneumatic boxes 6 are fixedly connected to both sides of the outer wall of the heating furnace 1, the end of the second screw rod 51 passes through the pneumatic box 6 and is rotatably connected thereto, a pneumatic impeller 61 is fixedly connected to the outer wall of the second screw rod 51 located in the pneumatic box 6, the top of the pneumatic box 6 is fixed and connected with a power air duct 62, the other end of the power air duct 62 is connected to the inner cavity of the air storage box 4, and an electromagnetic valve is arranged in the power air duct 62, and an air outlet groove 64 is opened on the side wall of the pneumatic box 6; a nitrogen tank 63 is fixedly connected to the top of the air storage box 4, and nitrogen pipes 631 are respectively fixed and connected on both sides of the nitrogen tank 63, the other end of the nitrogen pipe 631 passes through the air storage box 4 and is fixed and connected to the exhaust pipe 41, and an electromagnetic valve is arranged in the nitrogen pipe 631.

[0044] By setting the above structure, the heater 2 is turned on to heat the heating furnace 1 to achieve heat treatment of the aluminum alloy casting, which effectively improves the performance of the aluminum alloy casting; at the same time, during the heating process, the solenoid valve in the nitrogen pipe 631 is opened, and the nitrogen in the nitrogen tank 63 will enter the air guide plate 53 along the nitrogen pipe 631 and the exhaust pipe 41, and finally be discharged outward from the air guide groove 531. At the same time, the solenoid valve in the power air duct 62 is opened, so that the high-pressure gas stored in the air storage box 4 enters the pneumatic box 6 along the power air duct 62, thereby driving the pneumatic impeller 61 to rotate, thereby driving the second screw rod 51 to continue to rotate, so that the air guide plate 53 moves along the second screw rod 51 in the cavity of the heating furnace 1. At this time, with the effect of the nitrogen output along the air guide groove 531, the heat will be concentrated to move to the aluminum alloy casting, firstly, a safe heat treatment gas environment is provided to ensure the treatment effect, and secondly, the heat is directed and concentratedly heated to ensure the heating effect and improve the heat treatment efficiency. Finally, the airflow entering the pneumatic box 6 will be discharged along the air outlet groove 64.

[0045] Reference Figure 1-Figure 8 In the present invention, when in use, the display rack stacked with aluminum alloy castings is hoisted onto the loading plate 72, and then the feeding and unloading motor 75 is turned on to drive the third screw rod 74 to rotate, so that the pushing block 741 slides along the third screw rod 74, thereby driving the loading plate 72 to move along the transport guide rail 7 into the heating furnace 1. When the loading plate 72 is moved, the sealing motor 82 is turned on to drive the first screw rod 8 to rotate, so that the sealing plate 3 moves downward along the first screw rod 8, and finally the feeding port of the heating furnace 1 is closed to ensure the heat treatment effect.

[0046] Then, the exhaust motor 45 is turned on to drive the exhaust shaft 44 to rotate, so that the lower magnetic plate 441 rotates in the piston box 42. At this time, the repulsion between the lower magnetic plate 441 and the upper magnetic plate 43 will cause the upper magnetic plate 43 to move upward, thereby generating a suction effect in the lower cavity of the piston box 42, thereby opening the one-way valve in the exhaust pipe 41, so that the gas in the heating furnace 1 is sucked into the piston box 42 along the exhaust pipe 41. After the lower magnetic plate 441 and the upper magnetic plate 43 are separated from the repulsive area, the return spring 431 rebounds. Under the action, the upper magnetic plate 43 will move downward and reset, thereby compressing the gas in the piston box 42 and opening the one-way valve in the exhaust pipe 421, so that the gas in the piston box 42 enters the air storage box 4 along the exhaust pipe 421, and so on. The gas in the heating furnace 1 will continue to move into the air storage box 4, thereby reducing the original gas in the heating furnace 1, and the interior of the heating furnace 1 is gradually transformed into a vacuum state, thereby effectively avoiding the oxidation of the oxygen in the air during the heat treatment of the aluminum alloy, and improving the heat treatment effect. And with the rotation of the exhaust shaft 44, the rotation of the pulley group 54 will drive the second screw rod 51 to rotate, so that the air guide plate 53 moves back and forth along the second screw rod 51, and the exhaust pipe 41 is connected to the inner cavity of the air guide plate 53. The suction effect generated in the exhaust pipe 41 will eventually be transmitted to the air guide groove 531. At this time, along with the movement of the air guide plate 53, impurities attached to the aluminum alloy casting will be sucked away, thereby improving the cleanliness of the surface of the aluminum alloy casting and improving the final heat treatment quality of the aluminum alloy casting.

[0047] When the gas is extracted, the heater 2 can be turned on to heat the heating furnace 1 to achieve heat treatment of the aluminum alloy casting, effectively improving the performance of the aluminum alloy casting; at the same time, during the heating process, the solenoid valve in the nitrogen pipe 631 is opened, and the nitrogen in the nitrogen tank 63 will enter the air guide plate 53 along the nitrogen pipe 631 and the exhaust pipe 41, and finally be discharged outward from the air guide groove 531. At the same time, the solenoid valve in the power air duct 62 is opened, so that the high-pressure gas stored in the air storage box 4 enters the pneumatic box 6 along the power air duct 62, thereby driving the pneumatic impeller 61 to rotate, thereby driving the second screw rod 51 to continue to rotate, so that the air guide plate 53 moves along the second screw rod 51 in the cavity of the heating furnace 1. At this time, with the effect of the nitrogen output along the air guide groove 531, the heat will be concentrated to move to the aluminum alloy casting, firstly, a safe heat treatment gas environment is provided to ensure the treatment effect, and secondly, the heat is directed and concentrated for heating, effectively improving the heat treatment efficiency. Finally, after the heat treatment is completed, the sealing plate 3 will be opened, so that the loading plate 72 is moved out of the heating furnace 1 along the transport guide rail 7, thereby completing the heat treatment of the aluminum alloy casting.

[0048] Embodiment 2:

[0049] Reference Figure 1-Figure 8, which is basically the same as the first embodiment, on the basis of the first embodiment, a method for heat treatment of aluminum alloy is proposed, and the steps are as follows:

[0050] Step 1, send the aluminum alloy castings that need to be heat treated into the heating furnace 1, and seal the heating furnace 1: hoist the display rack with the aluminum alloy castings onto the loading plate 72, then turn on the feed and discharge motor 75 to drive the third screw rod 74 to rotate, so that the push block 741 slides along the third screw rod 74, thereby driving the loading plate 72 to move along the transport guide rail 7 into the heating furnace 1; when the loading plate 72 has completed moving, turn on the sealing motor 82 to drive the first screw rod 8 to rotate, so that the sealing plate 3 moves downward along the first screw rod 8, and finally the feed port of the heating furnace 1 is closed to ensure the heat treatment effect.

[0051] Step 2, exhaust the air in the heating furnace 1: turn on the exhaust motor 45, so that it drives the exhaust shaft 44 to rotate, so that the lower magnetic plate 441 rotates in the piston box 42, and at this time, the repulsion between the lower magnetic plate 441 and the upper magnetic plate 43 will cause the upper magnetic plate 43 to move upward, so as to generate suction in the lower cavity of the piston box 42, thereby opening the one-way valve in the exhaust pipe 41, so that the gas in the heating furnace 1 is sucked into the piston box 42 along the exhaust pipe 41, and after the lower magnetic plate 441 and the upper magnetic plate 43 are separated from the repulsive area, the reset spring Under the rebound action of the spring 431, the upper magnetic plate 43 will move downward and reset, thereby compressing the gas in the piston box 42 and opening the one-way valve in the exhaust pipe 421, so that the gas in the piston box 42 enters the air storage box 4 along the exhaust pipe 421. This reciprocating process will cause the gas in the heating furnace 1 to continuously move into the air storage box 4, thereby reducing the original gas in the heating furnace 1 and gradually turning the interior of the heating furnace 1 into a vacuum state, thereby effectively avoiding the effects of oxygen in the air on oxidation of the aluminum alloy during heat treatment, thereby improving the heat treatment effect.

[0052] Step 3, heating the heating furnace 1 and pushing the heat to the aluminum alloy casting: turn on the heater 2 to heat the heating furnace 1 to achieve heat treatment of the aluminum alloy casting, effectively improving the performance of the aluminum alloy casting; at the same time, during the heating process, open the solenoid valve in the nitrogen pipe 631, at this time, the nitrogen in the nitrogen tank 63 will enter the air guide plate 53 along the nitrogen pipe 631 and the exhaust pipe 41, and finally be discharged outward from the air guide groove 531, at the same time, open the solenoid valve in the power duct 62, so that the high-pressure gas stored in the air storage box 4 enters the pneumatic box 6 along the power duct 62, thereby driving the pneumatic impeller 61 to rotate, thereby driving the second screw rod 51 to continue to rotate, so that the air guide plate 53 moves along the second screw rod 51 in the cavity of the heating furnace 1, at this time, with the effect of the nitrogen output along the air guide groove 531, the heat will be concentrated to move to the aluminum alloy casting, firstly, a safe heat treatment gas environment is provided to ensure the treatment effect, and secondly, the heat is directed and concentratedly heated, effectively improving the heat treatment efficiency.

[0053] Step 4: After the heat treatment is completed, the aluminum alloy casting is transported out of the heating furnace 1: the sealing motor 82 is turned on to drive the first screw 8 to rotate, thereby opening the sealing plate 3, and then the feeding and discharging motor 75 is turned on to drive the third screw 74 to rotate, so that the loading plate 72 is moved out of the heating furnace 1 along the transport guide rail 7, thereby completing the heat treatment of the aluminum alloy casting.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An aluminum alloy heat treatment device, comprising a heating furnace (1) and a heater (2) fixed to the side wall thereof, characterized in that: The feed inlet end of the heating furnace (1) is fitted with a sealing plate (3) for sliding, and a lifting part for driving the sealing plate (3) to move up and down is arranged on the side wall of the feed inlet end of the heating furnace (1), and further comprises: A vacuum component, the vacuum component being arranged on the heating furnace (1), and being used to extract air from the heating furnace (1); A material inlet and outlet assembly is arranged at the bottom of the heating furnace (1), and is used to deliver the aluminum alloy casting into or out of the heating furnace (1).

2. The aluminum alloy heat treatment device according to claim 1, characterized in that: The vacuum assembly comprises an air storage box (4), the air storage box (4) is fixed on the top of the heating furnace (1), an air extraction pipe (41) is fixedly connected inside the air storage box (4), both ends of the air extraction pipe (41) are connected to the inner cavity of the heating furnace (1), a piston box (42) is fixedly connected to the middle of the air extraction pipe (41), an upper magnetic plate (43) is slidably connected inside the piston box (42), a return spring (431) is fixedly connected between the top of the upper magnetic plate (43) and the inner wall of the piston box (42), and a rotation connection (431) is provided inside the piston box (42). A vacuum shaft (44) is connected, a lower magnetic plate (441) is fixedly connected to the outer wall of the vacuum shaft (44), and the lower magnetic plate (441) and the upper magnetic plate (43) are magnetically repelled from each other, exhaust pipes (421) are fixedly connected to both sides of the piston box (42), and one-way valves are provided in the exhaust pipes (421) and the vacuum pipe (41), a vacuum motor (45) is fixedly connected to the top of the heating furnace (1), and one end of the vacuum shaft (44) passes through the air storage box (4) and is fixedly connected to the output shaft end of the vacuum motor (45).

3. The aluminum alloy heat treatment device according to claim 2, characterized in that: Guide grooves (5) are provided on both sides of the inner wall of the heating furnace (1), and second screw rods (51) are rotatably connected in the guide grooves (5) on both sides. A limit slider (52) is threadedly sleeved on the second screw rod (51), and the limit slider (52) slides in contact with the inner wall of the guide groove (5). An air guide plate (53) is fixedly connected to the side wall of the limit slider (52). Air guide grooves (531) are provided at equal intervals on the sides of the air guide plates (53) close to each other. An air guide pipe (532) is fixed on and connected to the air guide plate (53), and the top end of the air guide pipe (532) is fixed and connected to one end of the exhaust pipe (41) extending into the heating furnace (1). The end of the second screw rod (51) passes through the heating furnace (1) and is connected to the exhaust shaft (44) through a pulley group (54).

4. The aluminum alloy heat treatment device according to claim 3, characterized in that: A pneumatic box (6) is fixedly connected to both sides of the outer wall of the heating furnace (1); the end of the second screw rod (51) passes through the pneumatic box (6) and is rotatably connected thereto; a pneumatic impeller (61) is fixedly connected to the outer wall of the second screw rod (51) located in the pneumatic box (6); the top of the pneumatic box (6) is fixed and connected to a power duct (62); the other end of the power duct (62) is connected to the inner cavity of the air storage box (4); an electromagnetic valve is arranged in the power duct (62); and an air outlet groove (64) is provided on the side wall of the pneumatic box (6).

5. The aluminum alloy heat treatment device according to claim 4, characterized in that: A nitrogen tank (63) is fixedly connected to the top of the gas storage box (4), and nitrogen pipes (631) are respectively fixed and connected to the two sides of the nitrogen tank (63), and the other end of the nitrogen pipe (631) penetrates into the gas storage box (4) and is fixed and connected to the exhaust pipe (41), and a solenoid valve is arranged in the nitrogen pipe (631).

6. The aluminum alloy heat treatment device according to claim 2, characterized in that: A limit strip (422) is fixedly connected to the piston box (42) above the communication port of the exhaust pipe (41), and the repulsive force generated between the lower magnetic plate (441) and the upper magnetic plate (43) is greater than the thrust required for the return spring (431) to be compressed.

7. The aluminum alloy heat treatment device according to claim 1, characterized in that: The material inlet and outlet assembly comprises two transport guide rails (7), the two transport guide rails (7) are respectively fixed on both sides of the bottom of the inner cavity of the heating furnace (1), and the two transport guide rails (7) are slidably sleeved with a moving block (71), and a loading plate (72) is fixedly connected between the tops of the moving blocks (71) on both sides, and a side wall of the transport guide rail (7) on one side is provided with a limiting guide groove (73), and a third screw rod (74) is rotatably connected in the limiting guide groove (73), and a pushing block (741) is threadedly sleeved on the outer wall of the third screw rod (74), and the pushing block (741) is fixedly connected to the moving block (71), and the end of the transport guide rail (7) is fixedly connected to the material inlet and outlet motor (75), and the end of the third screw rod (74) is fixedly connected to the output end of the material inlet and outlet motor (75).

8. The aluminum alloy heat treatment device according to claim 7, characterized in that: Sealing grooves (31) are provided on both sides of the sealing plate (3), the sealing grooves (31) are aligned with the transport guide rail (7) in the vertical direction, and the inner diameter of the sealing grooves (31) is equal to the outer diameter of the transport guide rail (7).

9. The aluminum alloy heat treatment device according to claim 1, characterized in that: The lifting part comprises a first screw rod (8), the first screw rod (8) is rotatably connected to the side wall of the feed port end of the heating furnace (1), the other side of the feed port end of the heating furnace (1) is fixedly connected to a limiting guide rod (81), the sealing plate (3) is sleeved between the first screw rod (8) and the limiting guide rod (81), and the first screw rod (8) and the sealing plate (3) are threadedly connected, the limiting guide rod (81) and the sealing plate (3) are slidably connected, and a sealing motor (82) is fixedly connected to the top of the heating furnace (1), and the output end of the sealing motor (82) is fixedly connected to the top of the first screw rod (8).

10. A method for heat treating an aluminum alloy, using an aluminum alloy heat treating device as claimed in any one of claims 1 to 9, characterized in that: Here are the steps: Step 1: Place the aluminum alloy casting to be heat treated into a heating furnace (1), and seal the heating furnace (1); Step 2: exhausting the air in the heating furnace (1); Step 3, heating the heating furnace (1) and pushing the heat to the aluminum alloy casting; Step 4: After the heat treatment is completed, the aluminum alloy casting is transported out of the heating furnace (1).

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