Aluminum alloy piston heat treatment device and method

Abstract

The invention discloses an aluminum alloy piston heat treatment device, and relates to the technical field of piston heat treatment, the aluminum alloy piston heat treatment device comprises a circulation assembly, the circulation assembly comprises an air outlet formed in the top of a furnace body and air inlets formed in the two sides of the furnace body, the air outlet and the air inlets are each provided with a temperature sensor, and the temperature sensors are used for monitoring the temperature change of the area where the temperature sensors are located in real time; the circulating assembly realizes uniform distribution of temperature in the furnace body through wind power circulation; the temperature control assemblies are arranged on the two sides of the interior of the furnace body and transmit heat into the furnace body through the circulation assembly. Through mutual cooperation of the temperature sensor, the weighing assembly and other devices, the weight of each batch of aluminum alloy pistons entering the furnace body and the amount of gas in the furnace are calculated, and the temperature change trend is calculated according to the temperature change in the furnace; therefore, accurate regulation and control of the temperature in the furnace are realized, and the problem that the aging treatment is influenced by non-uniform heat distribution in the aging furnace due to the fact that gas in the furnace expands along with temperature rise to influence heat energy circulation is effectively avoided.

Description

Technical Field

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

[0002] Cast piston alloys play a crucial role in power equipment. Cast pistons have a small expansion coefficient, good volume stability, can reduce the cylinder clearance, and can withstand high temperature, high pressure, and complex stress environments. In order to meet the continuously upgraded engine technical requirements, the research and improvement of cast aluminum alloy pistons have always been a hot topic in the industry. Therefore, it is urgent to establish the key technologies for the preparation of high power-to-weight ratio cast pistons, control the solidification temperature field of alloy materials through processes, and then regulate the microstructure and strengthening phase distribution of cast pistons to improve the strength and hardness of aluminum pistons so that they can bear higher pressures and temperatures.

[0003] Chinese Patent with the application number 2024102873468 discloses an aluminum alloy heat treatment method. S1, homogenization treatment: heating the aluminum alloy ring-shaped raw material for heat preservation treatment; S2, solution and aging treatment: first, perform pre-solution treatment; raise the temperature to achieve complete re-dissolution of alloy precipitates; keep the aluminum alloy at a certain temperature for pre-aging treatment. The above invention adopts homogenization, secondary solution treatment, pre-aging treatment, strengthening solution treatment, and oxidation over-aging treatment. The test results of the obtained aluminum alloy ring forgings show that the heat treatment process grade can reach the T6 level, and the exfoliation corrosion resistance grade can reach above the P level.

[0004] Chinese Patent with the application number 2024101361123 discloses an aluminum alloy piston heat treatment device and method. An aluminum alloy piston heat treatment device includes a heat treatment chamber and a heating chamber inside the heat treatment chamber. The inner wall of the heat treatment chamber is provided with a cavity, and a heat insulation layer is coated inside the cavity, and a heat treatment base is installed inside the heat insulation layer. The above invention adopts a box structure, has functions of heat treatment, heating, heat preservation, cooling, annealing, tempering, and quenching, integrates multiple functions of heat treatment equipment, does not require multiple transfers of workpieces for processing, and the cooling medium used in the device can be recycled through the device, and also has an environmental protection effect.

[0005] Similar to the above prior art, since the final performance of the piston is affected by the temperature fluctuation in the furnace during the aging treatment of the aluminum alloy piston, when the temperature in the furnace reaches the preset temperature, if the temperature fluctuation value is greater than ±5°C, it will directly affect the performance of the piston. In order to prevent heat dissipation in the furnace, the aging furnace is usually set as a sealed structure. Although this method can effectively avoid the problem of excessive temperature fluctuation caused by heat dissipation in the furnace, when the aging furnace is sealed and heated, the gas in the furnace will expand with the increase of temperature, affecting the heat energy cycle, resulting in uneven heat distribution in the aging furnace and affecting the effect of aging treatment.

[0006] Meanwhile, if the expansion gas in the furnace is not promptly drained outwards, it will cause the pressure in the furnace to gradually increase. On the one hand, it will affect the aging reaction of the piston. On the other hand, it will cause the internal sealed connection in the furnace to be damaged under high pressure, resulting in heat leakage. If the expansion gas in the furnace is depressurized outwards, it will cause the heat in some areas to dissipate. Since aluminum alloy is extremely sensitive to temperature during aging treatment, if the depressurization method is unreasonable, it will also affect the aging effect of aluminum alloy.

[0007] Therefore, it is necessary to study the temperature field distribution during the solidification process of the casting piston, and then regulate the precipitation of strengthening phases in the piston material, and invent an aluminum alloy piston heat treatment device and treatment method to solve the above problems. Summary of the Invention

[0008] The purpose of the present invention is to provide an aluminum alloy piston heat treatment device and treatment method to solve the problems mentioned in the above background technology.

[0009] To achieve the above purpose, the present invention provides the following technical solution: An aluminum alloy piston heat treatment device, which is applied to the aging treatment of aluminum alloy pistons, includes a furnace body. The heat treatment device further includes: A circulation component, which includes an air outlet provided at the top of the furnace body and air inlets provided on both sides of the furnace body. Temperature sensors are provided on both the air outlet and the air inlets. The temperature sensors are used to monitor the temperature changes in the areas where they are located in real time. The circulation component realizes uniform temperature distribution in the furnace body through wind circulation; A temperature control component, which is arranged on both sides inside the furnace body and transfers heat into the furnace body through the circulation component; A weighing component, which is arranged at the bottom of the furnace body for weighing the aluminum alloy pistons entering the furnace body; A control component, which is electrically connected to the circulation component, the temperature control component, and the weighing component. The control component can calculate the volume of the gas inside the furnace body, and control the temperature control component to regulate the temperature inside the furnace according to the calculation result. At the same time, it determines the heat distribution situation inside the furnace according to the data monitored by the circulation component, and controls the circulation component to make the temperature inside the furnace evenly distributed.

[0010] Preferably, the inside of the furnace body is divided into a heating chamber, a circulation chamber, a heat preservation chamber, and a pressure relief chamber by multiple partitions. The circulation chamber is arranged between the heating chamber and the pressure relief chamber, and the heat preservation chamber is arranged on both sides of the circulation chamber, the heating chamber, and the pressure relief chamber.

[0011] Preferably, the circulation component further includes a pressure relief valve. The pressure relief valve is arranged between the circulation chamber and the pressure relief chamber. The pressure relief valve uses an electric control method to relieve the high-temperature gas in the furnace body. The circulation chamber and the pressure relief chamber can be connected or closed through the opening and closing of the pressure relief valve.

[0012] Preferably, the air inlet is arranged between the heating chamber and the insulation chamber, and a blower is provided at each air inlet. The blower is started or stopped in an electrically controlled manner, and the blower can blow air into the heating chamber through the air inlet to promote the diffusion of the heat of the temperature control component into the heating chamber.

[0013] Preferably, diversion members are provided on both sides of the circulation chamber close to the insulation chamber. The diversion members are connected to a plurality of air inlets through air pipes. The air outlet is arranged between the heating chamber and the circulation chamber. The air outlet can enable the hot air flow in the heating chamber to flow into the circulation chamber, and the hot air flow in the heating chamber is circulated through the connection between the diversion member and the air inlet.

[0014] Preferably, the temperature control component adjusts the temperature of the heating chamber in an electrically controlled manner, and can achieve precise temperature control of the heating chamber in cooperation with the circulation component.

[0015] Preferably, the control component includes a data acquisition module, an analysis module, a PID module, and a PWM module. The data acquisition module can obtain the temperature data of the temperature sensor and the weighing data of the weighing component in real time. The analysis module can judge the change trend by comparing the continuous temperature values through the data obtained by the acquisition module.

[0016] Preferably, a lifting component is provided on one side of the furnace body. A furnace door is provided on the lifting component. The lifting component can drive the furnace door to slide up and down to seal and open the furnace body. A transmission component is provided at the bottom of the furnace body. The transmission component transports the placement rack loaded with the aluminum alloy piston into the furnace body in an electrically controlled manner.

[0017] The present invention also provides a heat treatment method for an aluminum alloy piston. The method uses the above heat treatment device to perform aging treatment on the aluminum alloy piston, including the following steps: S1. Pretreatment, performing solution treatment on the aluminum alloy piston; S2. Weighing, transporting the placement rack loaded with the aluminum alloy piston into the furnace body through the transmission component, and weighing the aluminum alloy piston through the weighing component and transmitting the data to the control component; S3. Analysis and processing, the control component sets the aging temperature according to the type and weight of the aluminum alloy piston, and calculates the volume of the gas in the heating chamber; S4. Aging treatment, the control component controls the temperature control component to heat the heating chamber according to the calculated data, and controls the circulation component to start working to make the heat in the heating chamber evenly distributed; S5. Feedback adjustment, judging whether the heat in the furnace body is evenly distributed and whether the gas expansion amount in the furnace body meets the pressure relief requirement through the real-time data collected by the temperature sensor, and controlling the circulation component to perform temperature control adjustment on the heating chamber; S6. Heat preservation and cooling: Control the temperature control component and the circulation component to stop working through the control component, cool the aluminum alloy piston that has completed the aging treatment in the furnace, and send the cooled aluminum alloy piston out of the furnace body.

[0018] Preferably, S5 includes the following steps: S501. Collect the temperature data at each air inlet and outlet through the temperature sensor, and transmit the collected data to the control component; S502. The control component determines whether the temperatures at each air outlet are consistent according to the collected temperature data. If so, it means that the heating uniformity of the furnace body is in a normal state, and proceed to S503; if not, it means that the furnace body is not heated uniformly. The control component controls the circulation component to adjust the circulating wind force of the heating chamber, and enter S501; S503. The control component calculates the gas expansion amount based on the temperature data of the heating chamber collected by the temperature sensor and the gas volume in the furnace body; S504. The control component determines whether the gas expansion amount reaches the preset value. If so, the control component controls the circulation component to relieve the pressure of the gas in the furnace body and regulate the temperature in the furnace body, and enter S501; if not, it means that the expansion amount is not sufficient to affect the aging treatment of the aluminum alloy piston, and enter S6.

[0019] Technical effects and advantages of the present invention: 1. Through the mutual cooperation of devices such as the temperature sensor and the weighing component, the present invention calculates the weight of each batch of aluminum alloy pistons entering the furnace body and the gas volume in the furnace, and infers the temperature change trend based on the temperature change in the furnace, so as to achieve precise control of the temperature in the furnace, effectively avoiding the problem that the gas in the furnace expands with the increase of temperature, affecting the heat energy cycle, and resulting in uneven heat distribution in the aging furnace, affecting the aging treatment.

[0020] 2. Through the mutual cooperation of devices such as the control component and the circulation component, the present invention calculates the gas expansion amount in the furnace according to the temperature change in the furnace, so as to achieve precise pressure relief of the gas in the furnace body. On the one hand, it avoids the gradual increase of the pressure in the furnace, affecting the aging reaction of the piston, and effectively prevents the problem that the heat leaks out due to the damage of the sealed connection in the furnace under the high pressure; on the other hand, it effectively solves the problem that the heat dissipation in some areas caused by the pressure relief of the expanding gas in the furnace will affect the aging effect of the aluminum alloy piston. Brief Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a front view of the overall structure of the present invention.

[0023] Figure 3 This is a schematic diagram of the internal structure of the furnace body of the present invention.

[0024] Figure 4 This is a flow chart of the heat treatment method of the present invention.

[0025] Figure 5 For the present invention Figure 4 Schematic diagram of the S5 process in

[0026] In the figure: 1. Furnace body; 11. Heating chamber; 12. Circulation chamber; 13. Heat preservation chamber; 14. Pressure relief chamber; 2. Circulation component; 21. Air outlet; 22. Air inlet; 23. Pressure relief valve; 24. Blower; 25. Flow guide component; 3. Furnace door; 4. Lifting component; 5. Temperature control component; 6. Weighing component. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] To improve the heat treatment effect of aluminum alloy pistons, as Figures 1 - 3 shown, in the first embodiment of the present invention, a heat treatment device for aluminum alloy pistons is proposed. This device is applied to the aging treatment of aluminum alloy pistons and includes a furnace body 1. The furnace body 1 is divided into a heating chamber 11, a circulation chamber 12, a heat preservation chamber 13, and a pressure relief chamber 14 by multiple partitions. The circulation chamber 12 is arranged between the heating chamber 11 and the pressure relief chamber 14, and the heat preservation chamber 13 is arranged on both sides of the circulation chamber 12, the heating chamber 11, and the pressure relief chamber 14.

[0029] In this embodiment, a lifting component 4 is provided on one side of the furnace body 1, and a furnace door 3 is provided on the lifting component 4. The lifting component 4 can drive the furnace door 3 to slide up and down to realize the sealing and opening of the furnace body 1. A transmission component is provided at the bottom of the furnace body 1, and the transmission component uses an electric control method to transmit the placement rack loaded with aluminum alloy pistons into the furnace body 1.

[0030] In this embodiment, the heat treatment device further includes: a circulation component 2, which includes an air outlet 21 provided at the top of the furnace body 1 and air inlets 22 provided on both sides of the furnace body 1. The air inlets 22 are arranged between the heating chamber 11 and the heat preservation chamber 13, and a blower 24 is provided at each air inlet 22. The blower 24 is started or stopped by an electric control method.

[0031] In this embodiment, the heat treatment device further includes a temperature control component 5. The temperature control component 5 adjusts the temperature of the heating chamber 11 in an electrically controlled manner, and can achieve precise temperature control of the heating chamber 11 in cooperation with the circulation component 2. The temperature control component 5 is arranged on both sides inside the furnace body 1 and transfers heat to the inside of the furnace body 1 through the circulation component 2. The blower 24 can blow air into the heating chamber 11 through the air inlet 22 to promote the diffusion of the heat of the temperature control component 5 into the heating chamber 11.

[0032] It should be noted that the heating methods of the temperature control component 5 include but are not limited to resistance wire heating, hot air circulation heating, gas heating, etc., which can provide sufficient heat and are conducive to precise control.

[0033] In this embodiment, flow guides 25 are provided on both sides of the circulation chamber 12 close to the heat preservation chamber 13. The flow guides 25 are connected to a plurality of air inlets 22 through air pipes. The air outlet 21 is arranged between the heating chamber 11 and the circulation chamber 12. The air outlet 21 can make the hot air in the heating chamber 11 flow into the circulation chamber 12, and realize the circulating flow of the hot air in the heating chamber 11 through the connection between the flow guides 25 and the air inlets 22.

[0034] In this embodiment, the circulation component 2 further includes a pressure relief valve 23. The pressure relief valve 23 is arranged between the circulation chamber 12 and the pressure relief chamber 14. The pressure relief valve 23 relieves the pressure of the high-temperature gas in the furnace body 1 in an electrically controlled manner. The circulation chamber 12 and the pressure relief chamber 14 can be connected or closed through the opening and closing of the pressure relief valve 23. When it is necessary to relieve the pressure of the high-temperature gas in the heating chamber 11, the pressure relief valve 23 is controlled to open. At this time, the gas entering the heating chamber 11 through the air inlet 22 can enter the circulation chamber 12 through the air outlet 21, so that part of the gas is discharged to the pressure relief chamber 14 through the pressure relief valve 23, and the discharged high-temperature gas is cooled and released through the cooling box arranged on the circulation component 2, thus avoiding the problem of harm to personnel caused by the direct discharge of hot air flow.

[0035] It should be noted that the cooling box is arranged on the top of the furnace body 1. By arranging the cooling box at a high place, the problem that the operator accidentally touches the cooling box and gets scalded is prevented.

[0036] During use, the placement rack loaded with aluminum alloy pistons is sent into the furnace body 1 through the transmission component, and the furnace door 3 is closed through the lifting component 4, so that the heating chamber 11 in the furnace body 1 is in a sealed state. Then, the temperature control component 5 is controlled to start working to heat the heating chamber 11. At the same time, air is sent into the heating chamber 11 through the circulation component 2, so that the heat of the temperature control component 5 can be evenly diffused into the heating chamber 11. Driven by the air flow, the hot air flow entering the heating chamber 11 can flow into the circulation chamber 12 through the air outlet 21, and the hot air flow entering the circulation chamber 12 is made to enter the heating chamber 11 again through the air inlet 22 by the flow guide member 25, realizing the circulating heating of the heating chamber 11.

[0037] When it is necessary to relieve the pressure in the heating chamber 11, the pressure relief valve 23 is controlled to open, so that part of the gas is discharged to the pressure relief chamber 14 through the pressure relief valve 23, and the discharged high-temperature gas is cooled and released by the cooling box arranged on the circulation component 2, thus avoiding the problem of harm to personnel caused by the direct discharge of the hot air flow.

[0038] However, during actual use, when the temperature in the furnace reaches the preset temperature, if the temperature fluctuation value is greater than ±5°C, it will directly affect the performance of the pistons. And the gas in the furnace expands with the increase of temperature, affecting the heat energy circulation, resulting in uneven heat distribution in the aging furnace and affecting the aging treatment effect. At the same time, if the expanded gas in the furnace is not promptly drained outwards, the pressure in the furnace will gradually increase. On the one hand, it will affect the aging reaction of the pistons, and on the other hand, it will cause the sealed connection in the furnace to be damaged under the high pressure and the heat to overflow. If the expanded gas in the furnace is drained outwards, it will cause heat dissipation in some areas. Since aluminum alloy is extremely sensitive to temperature during aging treatment, if the pressure relief method is unreasonable, it will also affect the aging effect of aluminum alloy.

[0039] Therefore, to solve the above technical problems, in another embodiment of the present invention, the device further includes: temperature sensors are provided on both the air outlet 21 and the air inlet 22, and the temperature sensors are used to monitor the temperature changes in the areas where they are located in real time. The circulation component 2 realizes uniform distribution of the temperature in the furnace body 1 through wind circulation.

[0040] In this embodiment, the device further includes a weighing component 6, which is arranged at the bottom of the furnace body 1 to weigh the aluminum alloy pistons entering the furnace body 1. By pre-measuring the volume and weighing the weight of a single aluminum alloy piston and recording this data, when weighing the placement rack and all the aluminum alloys on the transmission component, the number of aluminum alloy pistons in this batch can be obtained through calculation, and the total volume of this batch of aluminum alloys can be obtained according to the number. Since the volume of the heating chamber 11 remains unchanged, the total volume of the gas in the heating chamber 11 can be obtained by subtracting the total volume of this batch of aluminum alloys from the volume of the heating chamber 11.

[0041] In this embodiment, the device further includes a control component, which is electrically connected to the circulation component 2, the temperature control component 5, and the weighing component 6. The control component can calculate the volume of the aluminum alloy piston and the volume of the gas inside the furnace body 1 based on the data obtained by the weighing component 6, and control the temperature control component 5 to adjust the temperature inside the furnace body 1 according to the calculation results. At the same time, it determines the heat distribution inside the furnace body 1 based on the data monitored by the circulation component 2, and controls the circulation component 2 to make the temperature inside the furnace body 1 evenly distributed.

[0042] In this implementation, the control component includes a data acquisition module, an analysis module, a PID module, and a PWM module. The data acquisition module can obtain the temperature data of the temperature sensor and the weighing data of the weighing component 6 in real time. The analysis module can compare the continuous temperature values to judge the change trend by obtaining the data of the acquisition module, and calculate the thermal expansion amount of the gas at different temperatures based on the gas thermal expansion coefficient inside the furnace body 1. The PID module can calculate the deviation signal (the difference between the set value and the actual value) in real time and output a control amount, and generate a control signal through the PWM module to regulate the circulation component 2.

[0043] During use, first weigh the aluminum alloy pistons sent into the furnace body 1 by the weighing component 6, and calculate the total volume of this batch of aluminum alloy pistons by combining the weight and volume of a single aluminum alloy. Then, based on the volume of the heating chamber 11 and the total volume of the aluminum alloy pistons, obtain the initial volume of the gas inside the heating chamber 11, and perform operations by controlling the temperature control component 5 and the circulation component 2 to perform aging treatment on the aluminum alloy pistons inside the heating chamber 11.

[0044] Since temperature sensors are provided at both the air outlet 21 and the air inlet 22, and the air inlet 22 is provided on one side of the temperature control component 5, therefore, the temperature sensor provided at the air inlet 22 can detect the temperature of the heating chamber 11 in the area of the temperature control component 5. When the hot air flow flows into the circulation chamber 12 through the air outlet 21, the temperature sensor provided at the air outlet 21 can collect the temperature data of the heating chamber 11 where it enters the circulation chamber 12 in real time. During this process, since the air outlets 21 are provided in multiple numbers and are evenly distributed in the upper area of the heating chamber 11, by judging whether the temperature values at each air outlet 21 are the same, it can be obtained whether the temperatures in each area of the heating chamber 11 are consistent.

[0045] If it is detected that the temperature values at multiple air outlets 21 are different, at this time, based on the multiple historical temperature data collected by the temperature sensor, construct a temperature change trend table, and combine the number of air inlets 22 opened at different temperatures to predict the current temperature trend.

[0046] For the sake of illustration, three air outlets 21 are set, the set temperature is 200 °C, and the preset range is ±5 °C. For example, if the temperatures of the three air outlets 21 are detected to be 200, 202, and 201 respectively; the temperatures of the three air outlets 21 at the previous moment are 200, 200, and 200 respectively; the temperatures at the previous two moments are 199, 199, and 199 respectively. According to the historical temperatures, it can be concluded that the change trend of the air outlet 21 is an upward trend, which indicates that at this time, due to the influence of temperature, the pressure inside the heating chamber 11 of the gas in the furnace body 1 becomes larger and the gas flow is blocked, and the hot air flow stays in a certain area for too long, resulting in the temperature of this area rising. At this time, by increasing the number of air inlets 22, the circulation effect of the hot air flow is improved, so that the temperature changes within the preset range.

[0047] If the temperatures of the three air outlets 21 are detected to be 200, 199, and 198 respectively; the temperatures of the three air outlets 21 at the previous moment are 200, 200, and 200 respectively; the temperatures at the previous two moments are 200, 202, and 201 respectively. According to the historical temperatures, it can be concluded that the change trend of the air outlet 21 is a downward trend, which indicates that at this time, the hot air flow generated by the circulation component 2 quickly takes away the heat, the air flow disturbance intensifies, the original heat balance is destroyed, and temperature fluctuations are caused. At this time, by reducing the number of air inlets 22, the circulation effect of the hot air flow is reduced, so that the temperature changes within the preset range.

[0048] Through the above operations, it effectively avoids the problem that when the temperature in the furnace reaches the preset temperature during actual use, the gas in the furnace expands as the temperature rises, affecting the heat energy circulation, resulting in uneven heat distribution in the aging furnace and affecting the aging treatment effect.

[0049] As the temperature in the heating chamber 11 continues to rise, the gas in the heating chamber 11 will continue to expand. At this time, the temperature sensor set is used to collect the temperature in the heating chamber 11 in real time, and combined with the expansion coefficient of the gas, calculate whether the volume of the expanded gas combined with the volume of the aluminum alloy piston is greater than the volume of the heating chamber 11. If it is greater than the volume of the heating chamber 11 and the difference exceeds the set value, it indicates that the pressure in the heating chamber 11 is too high at this time, affecting the flow of the hot air flow and posing a safety hazard. At this time, by controlling the pressure relief valve 23 to open, part of the air flow entering the circulation chamber 12 passes through the pressure relief valve 23 into the pressure relief chamber 14 and this part of the gas is cooled by the cooling box.

[0050] Meanwhile, the temperature inside the heating chamber 11 is monitored in real time by the provided temperature sensor, and according to the temperature change trend, the number of opened air inlets 22 is correspondingly adjusted, thereby avoiding excessive pressure inside the furnace. On the one hand, it will affect the aging reaction of the piston, and on the other hand, it will cause the problem that the sealed connection inside the furnace is damaged under high pressure, resulting in heat leakage. At the same time, by adjusting the circulation component 2, the problem of heat dissipation in some areas caused by the outward diversion of the expanded gas inside the furnace is effectively solved.

[0051] As Figures 4 - 5 shown, in another embodiment of the present invention, an aluminum alloy piston heat treatment method is also provided. This method uses the heat treatment device in the above embodiment to perform aging treatment on the aluminum alloy piston, including the following steps: S1. Pretreatment, performing solution treatment on the aluminum alloy piston.

[0052] S2. Weighing, transmitting the placement rack loaded with the aluminum alloy piston into the furnace body 1 through the transmission component, and weighing the aluminum alloy piston by the weighing component 6 and transmitting the data to the control component.

[0053] S3. Analysis and processing, the control component sets the aging temperature according to the type and weight of the aluminum alloy piston, and calculates the gas volume inside the heating chamber 11.

[0054] S4. Aging treatment, the control component controls the temperature control component 5 to heat the heating chamber 11 according to the calculated data, and controls the circulation component 2 to start working, so that the heat inside the heating chamber 11 is evenly distributed.

[0055] S5. Feedback adjustment, judging whether the heat inside the furnace body 1 is evenly distributed and whether the gas expansion amount inside the furnace body 1 reaches the pressure relief requirement through the real-time data collected by the temperature sensor, and controlling the circulation component 2 to perform temperature control adjustment on the heating chamber 11.

[0056] S6. Heat preservation and cooling, controlling the temperature control component 5 and the circulation component 2 to stop working by the control component, performing furnace cooling on the aluminum alloy piston that has completed the aging treatment, and sending the cooled aluminum alloy piston out of the furnace body 1.

[0057] Among them, S5 includes the following steps: S501. Collect the temperature data at each air inlet 22 and air outlet 21 through the temperature sensor, and transmit the collected data to the control component.

[0058] S502. The control component judges whether the temperature at each air outlet 21 remains the same according to the collected temperature data. If so, it means that the heating uniformity of the furnace body 1 is in a normal state, and S503 is entered; if not, it means that the furnace body 1 is not evenly heated, and the control component controls the circulation component 2 to adjust the circulating wind force on the heating chamber 11, and enters S501.

[0059] S503. The control component calculates the gas expansion amount based on the temperature data of the heating chamber 11 collected by the temperature sensor and the gas volume in the furnace body 1.

[0060] S504. The control component determines whether the gas expansion amount reaches a preset value. If so, the control component controls the circulation component 2 to relieve the pressure of the gas in the furnace body 1 and regulates the temperature in the furnace body 1, and enters S501. If not, it means that the expansion amount is not sufficient to affect the aging treatment of the aluminum alloy piston, and enters S6.

[0061] Through the above heat treatment method and heat treatment device, the precise control of the temperature field during the aging treatment of the aluminum alloy piston is realized, and then the precipitation of the strengthening phase in the piston material is regulated.

[0062] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heat treatment device for an aluminum alloy piston, which is used for aging treatment of an aluminum alloy piston, comprising a furnace body (1), characterized in that: The heat treatment device also includes: A circulation component (2), comprising an air outlet (21) arranged at the top of the furnace body (1) and air inlets (22) arranged at both sides of the furnace body (1), wherein the air outlet (21) and the air inlet (22) are both provided with temperature sensors, and the temperature sensors are used to monitor temperature changes in the area in real time, and the circulation component (2) realizes uniform temperature distribution in the furnace body (1) through wind circulation; A temperature control component (5) is arranged on both sides of the furnace body (1) and transmits heat to the furnace body (1) through the circulation component (2); A weighing assembly (6) disposed at the bottom of the furnace body (1) and used for weighing the aluminum alloy piston entering the furnace body (1); A control component is electrically connected to the circulation component (2), the temperature control component (5) and the weighing component (6); the control component is capable of calculating the volume of gas inside the furnace body (1), and controlling the temperature control component (5) to adjust the temperature inside the furnace body (1) based on the calculation result; and at the same time, determining the heat distribution inside the furnace body (1) based on the data monitored by the circulation component (2), and controlling the circulation component (2) to make the temperature inside the furnace body (1) evenly distributed.

2. The aluminum alloy piston heat treatment device according to claim 1, characterized in that: The furnace body (1) is divided into a heating chamber (11), a circulation chamber (12), a heat preservation chamber (13) and a pressure relief chamber (14) by a plurality of partitions; the circulation chamber (12) is arranged between the heating chamber (11) and the pressure relief chamber (14); and the heat preservation chamber (13) is arranged on both sides of the circulation chamber (12), the heating chamber (11) and the pressure relief chamber (14).

3. The aluminum alloy piston heat treatment device according to claim 2, characterized in that: The circulation component (2) further comprises a pressure relief valve (23), wherein the pressure relief valve (23) is arranged between the circulation chamber (12) and the pressure relief chamber (14), and the pressure relief valve (23) is electrically controlled to relieve the pressure of the high-temperature gas in the furnace body (1), and the circulation chamber (12) and the pressure relief chamber (14) can be connected or closed by opening and closing the pressure relief valve (23).

4. The aluminum alloy piston heat treatment device according to claim 3, characterized in that: The air inlet (22) is arranged between the heating chamber (11) and the heat preservation chamber (13), and a blower (24) is provided at each of the air inlets (22). The blower (24) is started or stopped by means of electrical control. The blower (24) can blow air into the heating chamber (11) through the air inlet (22) to promote the heat of the temperature control component (5) to diffuse into the heating chamber (11).

5. The aluminum alloy piston heat treatment device according to claim 4, characterized in that: The circulation chamber (12) is provided with flow guides (25) on both sides close to the heat preservation chamber (13); the flow guides (25) are connected to a plurality of air inlets (22) via air pipes; the air outlets (21) are arranged between the heating chamber (11) and the circulation chamber (12); the air outlets (21) enable the hot air in the heating chamber (11) to flow into the circulation chamber (12); and the flow guides (25) are connected to the air inlets (22) to achieve the circulation of the hot air in the heating chamber (11).

6. The aluminum alloy piston heat treatment device according to claim 5, characterized in that: The temperature control component (5) uses an electric control method to adjust the temperature of the heating chamber (11), and can achieve precise temperature control of the heating chamber (11) in conjunction with the circulation component (2).

7. The aluminum alloy piston heat treatment device according to claim 6, characterized in that: The control component comprises a data acquisition module, an analysis module, a PID module, and a PWM module. The data acquisition module can acquire temperature data of a temperature sensor and weighing data of a weighing component (6) in real time. The analysis module can determine a change trend by comparing continuous temperature values ​​by acquiring data from the acquisition module.

8. The aluminum alloy piston heat treatment device according to claim 7, characterized in that: A lifting assembly (4) is provided on one side of the furnace body (1), a furnace door (3) is provided on the lifting assembly (4), and the lifting assembly (4) can drive the furnace door (3) to slide up and down to achieve sealing and opening of the furnace body (1). A transmission assembly is provided at the bottom of the furnace body (1), and the transmission assembly uses an electronically controlled method to transmit a placement rack loaded with an aluminum alloy piston into the furnace body (1).

9. A method for heat treatment of an aluminum alloy piston, wherein the method uses the heat treatment device according to any one of claims 1 to 8 to perform aging treatment on the aluminum alloy piston, characterized in that: The steps include: S1, pretreatment, solution treatment of the aluminum alloy piston; S2, weighing, transferring the placement rack loaded with the aluminum alloy piston into the furnace body (1) through the transmission component, and weighing the aluminum alloy piston through the weighing component (6) and transmitting the data to the control component; S3, analysis and processing, the control component sets the aging temperature according to the type and weight of the aluminum alloy piston, and calculates the volume of the gas in the heating chamber (11); S4, aging treatment, the control component controls the temperature control component (5) to heat the heating chamber (11) according to the calculated data, and controls the circulation component (2) to start operation, so that the heat in the heating chamber (11) is evenly distributed; S5, feedback regulation, using the real-time data collected by the temperature sensor to determine whether the heat in the furnace body (1) is evenly distributed and whether the gas expansion in the furnace body (1) meets the pressure relief requirement, and controlling the circulation component (2) to adjust the temperature of the heating chamber (11); S6, heat preservation and cooling, the control component controls the temperature control component (5) and the circulation component (2) to stop operation, the aluminum alloy piston that has completed the aging treatment is cooled along with the furnace, and the aluminum alloy piston that has completed the cooling is sent out of the furnace body (1).

10. The aluminum alloy piston heat treatment method according to claim 9, characterized in that: The S5 comprises the following steps: S501, collecting temperature data at each air inlet (22) and air outlet (21) through the temperature sensor, and transmitting the collected data to the control component; S502, the control component determines whether the temperature at each air outlet (21) is consistent based on the collected temperature data; if so, it means that the heating uniformity of the furnace body (1) is in a normal state, and the process proceeds to S503; if not, it means that the heating inside the furnace body (1) is not uniform, and the control component controls the circulation component (2) to adjust the circulating wind force of the heating chamber (11), and the process proceeds to S501; S503, the control component calculates the gas expansion amount based on the temperature data in the heating chamber (11) collected by the temperature sensor and the gas volume in the furnace body (1); S504, the control component determines whether the gas expansion amount reaches a preset value. If so, the control component controls the circulation component (2) to release the gas in the furnace body (1) and adjusts the temperature in the furnace body (1), and enters S501; if not, it means that the expansion amount is not enough to affect the aging treatment of the aluminum alloy piston, and enters S6.

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