Heat treatment process of aluminum profile

Abstract

The invention relates to a heat treatment process of an aluminum profile. The heat treatment process specifically comprises the following steps: step 1, selecting an aluminum alloy raw material, smelting, preserving heat and casting; the aluminum alloy rod obtained after casting is subjected to homogenization treatment, and the aluminum alloy rod is cooled to the room temperature after being homogenized; secondly, the aluminum alloy bar, the extrusion die and the extrusion container obtained in the first step are preheated; thirdly, the aluminum bar is extruded through an extruding machine by adopting the technology that the extrusion speed is 2.0 mm / s and the extrusion ratio is 27.8, and synchronous traction is conducted through a traction machine in the discharging process; fourthly, the discharged product is quenched through an aging device; performing aging heat treatment on the obtained product; atomized hot water is sprayed to the aluminum profile in the placing box through the two sprayers, so that the aluminum profile can be pre-cooled conveniently, and the situation that the aluminum profile is directly put into a cooling pond to be quenched, and deformation or cracking is likely to occur due to too fast temperature change in the quenching process is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum profile processing, in particular to a heat treatment process for aluminum profiles. Background Art

[0002] Aluminum profiles refer to aluminum materials with different cross-sectional shapes obtained by hot melting and extrusion of aluminum rods; aluminum profiles are widely used in various production sectors, such as automobiles, motorcycles, bicycle accessories, building materials, hardware and electrical appliances, etc.; heat treatment refers to a metal heat processing process in which materials are heated, kept warm and cooled in a solid state to obtain the expected performance. Heat treatment processes are often used when processing aluminum profiles;

[0003] During the heat treatment process of existing aluminum profiles, the extruded aluminum profiles are directly placed into a cooling pool for quenching. During the quenching process, deformation or cracking is easily caused due to the rapid temperature change, affecting the product quality of the aluminum profile. At the same time, there is residual moisture on the surface of the aluminum profile after quenching. In the prior art, rapid air drying is not performed, and the moisture on the surface is likely to affect the efficiency of aging. Summary of the invention

[0004] The technical problems solved by this solution are:

[0005] (1) How to solve the problem that the aluminum profile is easily deformed or cracked due to rapid temperature changes during the quenching process, affecting the quality of the aluminum profile product;

[0006] (2) How to solve the problem of residual moisture on the surface of aluminum profiles after quenching, which easily affects its aging efficiency.

[0007] The purpose of the present invention can be achieved by the following technical solution: A heat treatment process for aluminum profiles, specifically comprising the following steps:

[0008] Step 1: Select aluminum alloy raw materials for smelting, heat preservation and casting. The cast aluminum alloy raw materials are calculated according to the mass fraction: Si0.7%, Fe0.35%, Cu0.3%, Mn0.5%, Mg0.5%, Cr0.3%, Zn0.2%, Ti0.1%, and the balance is aluminum; then the aluminum alloy rod obtained after casting is homogenized at 530°C for 10 hours, and then cooled to room temperature after homogenization;

[0009] Step 2: Preheating the aluminum alloy rod, extrusion die, and extrusion barrel obtained in step 1 respectively: the aluminum alloy rod is preheated to 490°C, the extrusion die is preheated to 485°C, and the barrel temperature is 400°C;

[0010] Step 3: The aluminum rod is extruded by an extruder at an extrusion speed of 2.0 mm / s and an extrusion ratio of 27.8, and the discharge process is synchronously pulled by a traction machine;

[0011] Step 4: Quench the discharged product through an aging device; the obtained product is subjected to aging heat treatment at 165°C and 7H insulation effect.

[0012] A further technical improvement of the present invention is that in the aging device of the above step four, two nozzles are used to spray atomized hot water to the aluminum profiles in the placement box, so as to facilitate pre-cooling treatment thereof and avoid direct quenching in a cooling pool, which may easily cause deformation or cracking due to rapid temperature changes during the quenching process.

[0013] A further technical improvement of the present invention is that in the aging device of step 4, the hot air flow in the aging furnace is injected into the water storage tank through the air inlet pipe, which not only heats the clean water therein but also prevents excessive pressure in the aging furnace.

[0014] A further technical improvement of the present invention is that in the aging device of the above step 4, the furnace mouth of the aging furnace is blocked by placing the top of the box, and two electric heating rods are turned on to increase the temperature in the aging furnace, thereby preheating the aging furnace.

[0015] A further technical improvement of the present invention is that the hot air flow entering the air inlet pipe in the aging device of the above step 4 will enter the air jet pipe through the connecting pipe, so that the hot air flow blows hot air toward the aluminum profile along the output end of the air jet pipe, thereby accelerating its drying speed, thereby avoiding residual moisture on the surface of the aluminum profile, which is easy to affect the efficiency of its aging.

[0016] A further technical improvement of the present invention is that in the aging device of the above step 4, the bottom of the placement box is used to block the furnace opening of the aging furnace, so that the aging furnace can age the aluminum profiles.

[0017] A further technical improvement of the present invention is that the above-mentioned aging device includes a cooling pool and an aging furnace, the bottom of the aging furnace is fixedly connected to the bottom of the inner wall of the cooling pool through four support frames, the cooling pool is filled with sufficient clean water, and a pre-cooling mechanism for cooling the aluminum profile is provided on one side of the inner wall of the cooling pool, and a moving mechanism for loading aluminum profiles is provided inside the aging furnace.

[0018] A further technical improvement of the present invention is that the pre-cooling mechanism includes a water tank fixedly connected to the inner wall of the cooling pool, the water tank is filled with a sufficient amount of clean water, and a drying unit for blowing air to the aluminum profile is arranged on the top of the water tank, the bottom of the water tank is connected to an L-shaped pipe, a control valve is fixedly installed in the middle of the L-shaped pipe, and the output end of the L-shaped pipe is connected to a U-shaped pipe, and nozzles are fixedly installed at both ends of the U-shaped pipe, and the two nozzles are respectively located on both sides below the aging furnace.

[0019] A further technical improvement of the present invention is that an air intake pipe is fixedly inserted into the water storage tank on one side of the air-drying unit, the input end of the air intake pipe is fixedly connected to the side wall of the aging furnace, and the output end of the air intake pipe is located below the liquid level of the clean water in the water storage tank. An air pump is also fixedly arranged on the outer wall of the aging furnace, and the output end of the air pump is fixedly connected to the aging furnace; by turning on the air pump, air flow is introduced into the aging furnace, so that the hot air flow in the aging furnace is injected into the water storage tank through the air intake pipe, which not only heats up the clean water therein, but also prevents the pressure in the aging furnace from being too high. At this time, the control valve is in a closed state. , the extended end of the cylinder shrinks from half the length to the shortest, the first piston is located above the water inlet pipe, the second piston blocks the connecting pipe, and the airflow after heating the clean water in the water tank will be discharged along the water inlet pipe, and then the extended end of the cylinder is controlled to reset to half the length, and the control valve is opened to allow the hot water in the water tank to enter the U-shaped pipe, and then the two nozzles are used to spray atomized hot water on the aluminum profiles in the placement box, so as to facilitate pre-cooling treatment and avoid directly putting them into the cooling pool for quenching. During the quenching process, deformation or cracking is easily caused due to excessive temperature changes, thereby preventing the product quality of the aluminum profile from being affected.

[0020] A further technical improvement of the present invention is that the air-drying unit includes an air duct fixedly inserted on the top of the water tank, and the middle sides of the air duct are respectively connected with an air jet pipe and a connecting pipe, the connecting pipe is located above the air jet pipe, and the connecting pipe is connected to the middle of the air inlet pipe.

[0021] A further technical improvement of the present invention is that the top of the air duct is closed, and the bottom side of the air duct is connected to a water inlet pipe, the position of the water inlet pipe is higher than the liquid level of the clean water in the cooling pool, and a second piston for blocking the input end of the air jet pipe is slidably provided on the inner wall of the air duct, and the bottom of the second piston is fixedly connected to the first piston by a connecting rod, and the position of the first piston corresponds to the position of the input end of the water inlet pipe.

[0022] A further technical improvement of the present invention is that: a longitudinally arranged cylinder is fixedly installed on the outer wall of the aging furnace, and the extended end of the cylinder movably penetrates the top of the air guide pipe and is fixedly connected to the second piston; when the extended end of the hydraulic cylinder is controlled to be extended to the longest, the aluminum profile is quenched by the clean water in the cooling pool. After quenching, the extended end of the hydraulic cylinder is controlled to shrink and reset to half the length, and then the extended end of the cylinder is controlled to be extended to the longest. At this time, the first piston blocks the bottom of the air guide pipe, and the second piston is located below the jet pipe, closing the control valve, so that the hot air flow entering the intake pipe will enter the jet pipe through the connecting pipe, so that the hot air flow blows hot air toward the aluminum profile along the output end of the jet pipe, accelerating its drying speed, thereby avoiding residual moisture on the surface of the aluminum profile, which is easy to affect the efficiency of its aging.

[0023] A further technical improvement of the present invention is that the moving mechanism includes a hydraulic cylinder fixedly inserted into the top of the inner wall of the aging furnace, the hydraulic cylinder is arranged longitudinally, and a placement box for placing aluminum profiles is fixedly installed on the protruding end of the hydraulic cylinder, the bottom of the placement box movably passes through the bottom furnace opening of the aging furnace, a notch for loading is opened on the back of the placement box, and openings for ventilation are opened on both sides of the placement box.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] When the present invention is in use, by turning on the air pump, air flow is introduced into the aging furnace, so that the hot air flow in the aging furnace is injected into the water tank through the air inlet pipe, which not only heats the clean water in the aging furnace but also prevents the pressure in the aging furnace from being too high. At this time, the control valve is in a closed state, the extended end of the cylinder shrinks from half the length to the shortest, the first piston is located above the water inlet pipe, the second piston blocks the connecting pipe, and the air flow after heating the clean water in the water tank will be discharged along the water inlet pipe, and then the extended end of the cylinder is controlled to be reset to half the length, and the control valve is opened to allow the hot water in the water tank to enter the U-shaped tube, and then the two nozzles are used to spray atomized hot water on the aluminum profiles located in the placement box, so as to facilitate the pre-cooling treatment thereof and avoid directly putting it into the cooling pool for quenching. During the quenching process, deformation or cracking is easily generated due to excessively rapid temperature changes, so as to prevent the product quality of the aluminum profiles from being affected.

[0026] When the present invention is in use, when the extended end of the hydraulic cylinder is controlled to be extended to the longest, the aluminum profile is quenched by the clean water in the cooling pool. After quenching, the extended end of the hydraulic cylinder is controlled to shrink and reset to half the length, and then the extended end of the cylinder is controlled to be extended to the longest. At this time, the first piston blocks the bottom of the air guide pipe, and the second piston is located below the jet pipe, closing the control valve, so that the hot air flow entering the intake pipe will enter the jet pipe through the connecting pipe, so that the hot air flow blows hot air toward the aluminum profile along the output end of the jet pipe, accelerating the drying speed thereof, thereby avoiding residual moisture on the surface of the aluminum profile, which is easy to affect the efficiency of its aging. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0028] Figure 1 It is a schematic diagram of the heat treatment process of the present invention;

[0029] Figure 2 It is a schematic diagram of the structure of the aging device of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of the precooling mechanism of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of the air-drying unit of the present invention;

[0032] Figure 5 For the present invention Figure 4 A magnified view of the structure at center;

[0033] Figure 6 It is a schematic diagram of the structure of the mobile mechanism of the present invention.

[0034] In the figure: 1. moving mechanism; 2. air pump; 3. cylinder; 4. pre-cooling mechanism; 5. cooling pool; 6. support frame; 7. electric heating rod; 8. aging furnace; 101. hydraulic cylinder; 102. placement box; 103. opening; 104. notch; 401. L-shaped pipe; 402. air inlet pipe; 403. control valve; 404. water storage tank; 405. air drying unit; 406. U-shaped pipe; 4051. first piston; 4052. air guide pipe; 4053. water inlet pipe; 4054. jet pipe; 4055. connecting pipe; 4056. connecting rod; 4057. second piston. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-Figure 6 As shown, a heat treatment process for aluminum profiles specifically includes the following steps:

[0037] Step 1: Select aluminum alloy raw materials for smelting, heat preservation and casting. The cast aluminum alloy raw materials are calculated according to the mass fraction: Si0.7%, Fe0.35%, Cu0.3%, Mn0.5%, Mg0.5%, Cr0.3%, Zn0.2%, Ti0.1%, and the balance is aluminum; then the aluminum alloy rod obtained after casting is homogenized at 530°C for 10 hours, and then cooled to room temperature after homogenization;

[0038] Step 2: Preheating the aluminum alloy rod, extrusion die, and extrusion barrel obtained in step 1 respectively: the aluminum alloy rod is preheated to 490°C, the extrusion die is preheated to 485°C, and the barrel temperature is 400°C;

[0039] Step 3: The aluminum rod is extruded by an extruder at an extrusion speed of 2.0 mm / s and an extrusion ratio of 27.8, and the discharge process is synchronously pulled by a traction machine;

[0040] Step 4: Quench the discharged product through an aging device; the obtained product is subjected to aging heat treatment at 165°C and 7H insulation effect.

[0041] See also Figure 1-Figure 6 As shown, in the aging device of the above-mentioned step four, two nozzles are used to spray atomized hot water to the aluminum profiles in the display box 102, so as to facilitate the pre-cooling treatment thereof, and avoid directly putting it into the cooling pool 5 for quenching, which is easy to cause deformation or cracking due to too fast temperature change during the quenching process; in the aging device of the above-mentioned step four, the hot air flow in the aging furnace 8 is injected into the water storage tank 404 through the air inlet pipe 402, which not only heats the clean water therein, but also prevents the pressure in the aging furnace 8 from being too high; in the aging device of the above-mentioned step four, the furnace mouth of the aging furnace 8 is blocked by the top of the display box 102 The two electric heating rods 7 are turned on to increase the temperature in the aging furnace 8, so as to preheat the aging furnace 8; in the aging device of the above-mentioned step 4, the hot air flow entering the air inlet pipe 402 will enter the air jet pipe 4054 through the connecting pipe 4055, so that the hot air flow blows hot air toward the aluminum profile along the output end of the air jet pipe 4054, thereby accelerating the drying speed, thereby avoiding residual moisture on the surface of the aluminum profile, which is easy to affect the efficiency of its aging; in the aging device of the above-mentioned step 4, the furnace mouth of the aging furnace 8 is blocked by placing the bottom of the box 102, so that the aging furnace 8 is convenient for aging the aluminum profile.

[0042] See also Figure 2-Figure 6 As shown, the above-mentioned aging device includes a cooling pool 5 and an aging furnace 8. The bottom of the aging furnace 8 is fixedly connected to the bottom of the inner wall of the cooling pool 5 through four support frames 6. The cooling pool 5 is filled with sufficient clean water, and a pre-cooling mechanism 4 for cooling the aluminum profile is arranged on one side of the inner wall of the cooling pool 5. The interior of the aging furnace 8 is provided with a moving mechanism 1 for loading the aluminum profile.

[0043] See also Figure 2 and Figure 3 As shown, the above-mentioned precooling mechanism 4 includes a water tank 404 fixedly connected to the inner wall of the cooling pool 5, the water tank 404 is filled with a sufficient amount of clean water, and the top of the water tank 404 is provided with a drying unit 405 for blowing air to the aluminum profile, the bottom of the water tank 404 is connected to an L-shaped pipe 401, the middle of the L-shaped pipe 401 is fixedly installed with a control valve 403, and the output end of the L-shaped pipe 401 is connected to a U-shaped pipe 406, both ends of the U-shaped pipe 406 are fixedly installed with nozzles, and the two nozzles are respectively located on both sides below the aging furnace 8.

[0044] See also Figure 3As shown, an air intake pipe 402 is fixedly inserted into the water storage tank 404 on one side of the above-mentioned air drying unit 405, the input end of the air intake pipe 402 is fixedly connected to the side wall of the aging furnace 8, and the output end of the air intake pipe 402 is located below the liquid level of the clean water in the water storage tank 404, and an air pump 2 is also fixedly arranged on the outer wall of the aging furnace 8, and the output end of the air pump 2 is fixedly connected to the aging furnace 8; by turning on the air pump 2, air flow is introduced into the aging furnace 8, so that the hot air flow in the aging furnace 8 is injected into the water storage tank 404 through the air intake pipe 402, which not only heats up the clean water therein, but also prevents the pressure in the aging furnace 8 from being too high. At this time, the control valve 403 is in a closed state, and the protruding end of the cylinder 3 is extended from The half length is contracted to the shortest, the first piston 4051 is located above the water inlet pipe 4053, the second piston 4057 blocks the connecting pipe 4055, and the airflow after heating the clean water in the water tank 404 will be discharged along the water inlet pipe 4053, and then the extended end of the cylinder 3 is controlled to reset to half the length, and the control valve 403 is opened to allow the hot water in the water tank 404 to enter the U-shaped tube 406, and then the two nozzles are used to spray atomized hot water on the aluminum profiles in the display box 102, so as to facilitate the pre-cooling treatment thereof and avoid directly putting it into the cooling pool 5 for quenching. During the quenching process, deformation or cracking is easily caused due to excessive temperature changes, thereby preventing the product quality of the aluminum profile from being affected.

[0045] See also Figure 4 and Figure 5 As shown, the above-mentioned air drying unit 405 includes an air duct 4052 fixedly inserted on the top of the water tank 404, and the two sides of the middle part of the air duct 4052 are respectively connected with an injection pipe 4054 and a connecting pipe 4055, the connecting pipe 4055 is located above the injection pipe 4054, and the connecting pipe 4055 is connected to the middle part of the air inlet pipe 402.

[0046] See also Figure 4 and Figure 5 As shown, the top of the above-mentioned air guide pipe 4052 is closed, and the bottom side of the air guide pipe 4052 is connected to the water inlet pipe 4053, the position of the water inlet pipe 4053 is higher than the liquid level of the clean water in the cooling pool 5, and the inner wall of the air guide pipe 4052 is slidably provided with a second piston 4057 for blocking the input end of the jet pipe 4054, and the bottom of the second piston 4057 is fixedly connected to the first piston 4051 through a connecting rod 4056, and the position of the first piston 4051 corresponds to the position of the input end of the water inlet pipe 4053.

[0047] See also Figure 2 and Figure 4As shown, a longitudinally arranged cylinder 3 is fixedly installed on the outer wall of the aging furnace 8, and the extended end of the cylinder 3 movably penetrates the top of the air guide pipe 4052 and is fixedly connected to the second piston 4057; when the extended end of the hydraulic cylinder 101 is controlled to be extended to the longest, the aluminum profile is quenched by the clean water in the cooling pool 5. After quenching, the extended end of the hydraulic cylinder 101 is controlled to shrink and reset to half the length, and then the extended end of the cylinder 3 is controlled to be extended to the longest. At this time, the first piston 4051 blocks the bottom of the air guide pipe 4052, and the second piston 4057 is located below the jet pipe 4054, closing the control valve 403, so that the hot air flow entering the air inlet pipe 402 will enter the jet pipe 4054 through the connecting pipe 4055, so that the hot air flow blows hot air toward the aluminum profile along the output end of the jet pipe 4054, accelerating its drying speed, thereby avoiding residual moisture on the surface of the aluminum profile, which is easy to affect its aging efficiency.

[0048] See also Figure 1 and Figure 6 As shown, the above-mentioned moving mechanism 1 includes a hydraulic cylinder 101 fixedly inserted on the top of the inner wall of the aging furnace 8, the hydraulic cylinder 101 is arranged longitudinally, and a display box 102 for placing aluminum profiles is fixedly installed on the protruding end of the hydraulic cylinder 101, and the bottom of the display box 102 movably passes through the bottom furnace mouth of the aging furnace 8, and a notch 104 for loading is opened on the back of the display box 102, and openings 103 for ventilation are opened on both sides of the display box 102.

[0049] See also Figure 1 As shown, the position of one of the openings 103 corresponds to the position of the output end of the gas injection pipe 4054 .

[0050] See also Figure 1 As shown, electric heating rods 7 are fixedly installed on both sides of the inner wall of the aging furnace 8.

[0051] Working principle: When the present invention is used, first, Figure 2 and Figure 6 As shown, the extruded aluminum profile is placed in the placement box 102 through the notch 104. At this time, the extended end of the hydraulic cylinder 101 is at half the length, and the top of the placement box 102 blocks the furnace opening of the aging furnace 8. The two electric heating rods 7 are turned on to increase the temperature in the aging furnace 8, which has the effect of preheating the aging furnace 8; Figure 2 and Figure 6 As shown, the air pump 2 is turned on to introduce air into the aging furnace 8. Figure 2 and Figure 3 As shown, the hot air flow in the aging furnace 8 is injected into the water storage tank 404 through the air inlet pipe 402, which not only heats the clean water in it, but also prevents the pressure in the aging furnace 8 from being too high. At this time, the control valve 403 is in a closed state, and the extended end of the cylinder 3 shrinks from half its length to the shortest, as shown in FIG. Figure 4 and Figure 5 As shown, the first piston 4051 is located above the water inlet pipe 4053, and the second piston 4057 blocks the connecting pipe 4055. The airflow after the clean water in the water tank 404 is heated will be discharged along the water inlet pipe 4053, and then the extended end of the cylinder 3 is controlled to be reset to half the length, as shown in FIG. Figure 2 and Figure 3 As shown, the control valve 403 is opened to allow the hot water in the water tank 404 to enter the U-shaped tube 406, and then the two nozzles spray the atomized hot water to the aluminum profiles in the display box 102, so as to facilitate the pre-cooling treatment thereof and avoid directly putting it into the cooling pool 5 for quenching. During the quenching process, deformation or cracking is easily caused due to excessive temperature changes, thereby preventing the product quality of the aluminum profile from being affected; Figure 2 and Figure 6 As shown, when the extended end of the hydraulic cylinder 101 is extended to the maximum, the aluminum profile is quenched by the clean water in the cooling pool 5. After quenching, the extended end of the hydraulic cylinder 101 is controlled to shrink and reset to half the length, and then the extended end of the cylinder 3 is controlled to extend to the maximum. At this time, Figure 2 , Figure 4 and Figure 5 As shown, the first piston 4051 blocks the bottom of the air guide pipe 4052, and the second piston 4057 is located below the air jet pipe 4054, closing the control valve 403, so that the hot air flow entering the air intake pipe 402 will enter the air jet pipe 4054 through the connecting pipe 4055, so that the hot air flow blows hot air toward the aluminum profile along the output end of the air jet pipe 4054, thereby accelerating the drying speed, thereby avoiding residual moisture on the surface of the aluminum profile, which is easy to affect the efficiency of its aging; Figure 2 and Figure 6 As shown, the extended end of the hydraulic cylinder 101 is continuously controlled to be retracted and reset to the shortest position. At this time, the bottom of the placement box 102 blocks the furnace opening of the aging furnace 8, so that the aging furnace 8 can age the aluminum profiles.

[0052] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A heat treatment process for aluminum profiles, characterized in that: The specific steps include: Step 1: Select aluminum alloy raw materials for smelting, heat preservation and casting. The cast aluminum alloy raw materials are calculated according to the mass fraction: Si0.7%, Fe0.35%, Cu0.3%, Mn0.5%, Mg0.5%, Cr0.3%, Zn0.2%, Ti0.1%, and the balance is aluminum; then the aluminum alloy rod obtained after casting is homogenized at 530°C for 10 hours, and then cooled to room temperature after homogenization; Step 2: Preheating the aluminum alloy rod, extrusion die, and extrusion barrel obtained in step 1 respectively: the aluminum alloy rod is preheated to 490°C, the extrusion die is preheated to 485°C, and the barrel temperature is 400°C; Step 3: The aluminum rod is extruded by an extruder at an extrusion speed of 2.0 mm / s and an extrusion ratio of 27.8, and the discharge process is synchronously pulled by a traction machine; Step 4: Quench the discharged product through an aging device; the obtained product is subjected to aging heat treatment at 165°C and 7H insulation effect.

2. The heat treatment process of an aluminum profile according to claim 1, characterized in that: In the aging device of step 4, two nozzles are used to spray atomized hot water on the aluminum profiles in the placement box (102), so as to facilitate pre-cooling treatment thereof and avoid deformation or cracking due to rapid temperature changes during the quenching process.

3. The heat treatment process of an aluminum profile according to claim 1, characterized in that: In the aging device of step 4, the hot air flow in the aging furnace (8) is injected into the water storage tank (404) through the air inlet pipe (402), which not only heats the clean water in the aging furnace (8) but also prevents the pressure in the aging furnace (8) from being too high.

4. The heat treatment process of an aluminum profile according to claim 1, characterized in that: In the aging device of step 4, the top of the placement box (102) is used to block the furnace opening of the aging furnace (8), and the two electric heating rods (7) are turned on to increase the temperature in the aging furnace (8).

5. The heat treatment process of an aluminum profile according to claim 1, characterized in that: The hot air flow entering the air inlet pipe (402) in the aging device of step 4 above will enter the air jet pipe (4054) through the connecting pipe (4055), so that the hot air flow blows hot air toward the aluminum profile along the output end of the air jet pipe (4054), thereby accelerating the drying speed thereof.

6. The heat treatment process of an aluminum profile according to claim 1, characterized in that: In the aging device of step 4 above, the furnace opening of the aging furnace (8) is blocked by placing the bottom of the box (102).

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