Bending method of super-hard aluminum alloy, super-hard aluminum alloy sheet metal part and stage lamp

Abstract

The scheme belongs to the technical field of aluminum alloy bending processing, and discloses a super-hard aluminum alloy bending method, a super-hard aluminum alloy sheet metal part and a stage lamp. The super-hard aluminum alloy bending method comprises the following steps: S1, placing a super-hard aluminum alloy plate in heat preservation at 300-340 DEG C for 20-40 minutes, and then slowly cooling; S2, bending the super-hard aluminum alloy plate treated in step S1; and S3, placing the super-hard aluminum alloy plate treated in step S2 in heat preservation at 120-160 DEG C for 8-24 hours, and then slowly cooling. In the process of bending the super-hard aluminum alloy, no crack or fracture occurs, and after bending, the super-high hardness can be restored in a short time, without the need for long natural aging or artificial aging, and the scheme has the advantages of simple process, short time consumption and low cost, is very beneficial to industrialized production and operation, and has super-high economic value.

Description

Technical Field

[0001] This solution belongs to the field of aluminum alloy bending processing technology, specifically involving a method for bending ultra-hard aluminum alloys, ultra-hard aluminum alloy sheet metal parts, and stage lights. Background Technology

[0002] With the rapid development of stage lighting, people are paying increasing attention to the ease of hanging and operating stage lights, focusing on energy savings, reduced operating costs, and improved efficiency and flexibility. Therefore, lightweight stage lights have significant demand and development potential. Choosing lightweight materials is one way to achieve lightweight stage lights. Aluminum alloys have advantages such as low density, high specific strength, low cost, and ease of processing, and are widely used in the stage lighting manufacturing industry. For example, medium-strength 5052-H32 aluminum alloy is often used to make structural components of stage lights, such as mounting frames and decorative frames, accounting for 40% to 60% of the total weight of the light. It has been found that higher-strength aluminum alloys can achieve lightweighting through thinning. However, 5052-H32 aluminum alloy is limited by its relatively low room temperature mechanical properties (σ). b =230MPa,σ 0.2 =195MPa), and to ensure the safety and functional use of load-bearing components, the thickness is often about 2.5 to 3 mm. Therefore, people have turned their attention to the ultra-hard aerospace aluminum alloy 7075-T6 material (σ = 195MPa). b =572MPa,σ 0.2 =503MPa), aiming to reduce the weight of stage lighting sheet metal components by 50%. However, aluminum alloy sheet metal parts often involve multiple processing steps. Due to the high content of zinc, magnesium, and copper in the super-hard 7075 aluminum alloy, its hardness is very high after T6 heat treatment, reaching 18HW by hand. The hard and brittle phase of the material matrix causes cracks or even breakage of aluminum alloy sheet metal parts during bending.

[0003] In fact, in actual industrial production activities, many problems arise in aluminum processing, such as how to bend 7075 aluminum sheets. 7075 aluminum sheet has the highest hardness and strength among commonly used aluminum alloy sheets, making it difficult to bend directly as it is prone to cracking, especially when bending angles greater than 90 degrees or with very small radius angles. Currently, if bending or stamping to a certain angle is absolutely necessary, the 7075 aluminum sheet must first undergo annealing to reduce its hardness before bending or stamping. Then, it must be subjected to quenching and aging to restore its hardness, followed by shaping and surface treatment. Another method is to use a jig for welding, followed by CNC machining and surface treatment. Regardless of the method used, the process is complex, time-consuming, and costly, making it highly unfavorable for industrial production and operation. Summary of the Invention

[0004] This solution aims to overcome at least one defect in the existing technology and provide a bending method for ultra-hard aluminum alloys to solve the problems of complex, time-consuming, costly, and prone to cracking or even breakage in existing aluminum alloy bending processes.

[0005] To solve the above-mentioned technical problems, the following technical solution is adopted:

[0006] In a first aspect, a method for bending ultra-hard aluminum alloys is provided, the method comprising the following steps:

[0007] S1. Place the ultra-hard aluminum alloy sheet at 300-340℃ for 20-40 minutes, then cool it slowly;

[0008] S2. Bend the ultra-hard aluminum alloy sheet that has been processed in step S1;

[0009] S3. Place the ultra-hard aluminum alloy sheet treated in step S2 at 120-160℃ for 8-24 hours, and then cool it slowly.

[0010] Preferably, the temperature of the heat preservation treatment in step S1 is 300-320°C, and most preferably 300°C.

[0011] Preferably, the heat preservation treatment time in step S1 is 20 to 30 minutes, more preferably 20 to 25 minutes, and most preferably 20 minutes.

[0012] Preferably, the slow cooling in step S1 is natural cooling in air, more preferably natural cooling in air to room temperature.

[0013] Preferably, in step S2, the bending radius R and thickness t of the ultra-hard aluminum alloy sheet satisfy the following condition: R ≥ 2.6t.

[0014] Preferably, in step S2, the bending line is perpendicular to the fiber direction of the ultra-hard aluminum alloy sheet.

[0015] Preferably, the temperature of the heat preservation treatment in step S3 is 120-150°C, more preferably 120-130°C, and most preferably 125°C.

[0016] Preferably, the heat preservation treatment time in step S3 is 8 to 12 hours, more preferably 8 to 10 hours, even more preferably 8 to 9 hours, and most preferably 8 hours.

[0017] Preferably, the slow cooling in step S3 is natural cooling in air, more preferably natural cooling in air to room temperature.

[0018] Preferably, the thickness of the ultra-hard aluminum alloy sheet used in the above bending method is 1.5±0.3mm.

[0019] The above-mentioned bending method for ultra-hard aluminum alloys may also include the following steps performed before step S1:

[0020] S0. Calculate the bending unfolding dimensions according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0021] Preferably, the calculation formula for bending and unfolding in step S0 is: L=A+B+C-nK; where L represents the unfolded length, A, B, and C represent the external dimensions of the material, n represents the number of bends, and K represents the bending coefficient.

[0022] Secondly, a super-hard aluminum alloy sheet metal part processed using the above-mentioned bending method is provided.

[0023] Thirdly, a stage lamp using the aforementioned ultra-hard aluminum alloy sheet metal parts is provided. The structural components of the stage lamp using the aforementioned ultra-hard aluminum alloy sheet metal parts can be frame plates on the left and right sides inside the lamp head, mounting plates on both sides connected to the frame plates for mounting effect components, or support plates inside the arm for pivotally connecting with the frame plates.

[0024] Compared with existing technologies, this solution has the following advantages: no cracks or fractures will occur during the bending of ultra-hard aluminum alloys using this solution, and the ultra-high hardness can be restored in a short time after bending without the need for long natural or artificial aging. It has the advantages of simple process, short time consumption and low cost, which is very conducive to industrial production and operation and has extremely high economic value. Attached Figure Description

[0025] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this solution. To better illustrate the solution, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0026] Figure 1 This is a flowchart of the bending method for ultra-hard aluminum alloys.

[0027] Figure 2 It is a curve diagram of the bending process of ultra-hard aluminum alloy.

[0028] Figure 3 This is a structural diagram of an ultra-hard aluminum alloy sheet metal part.

[0029] Figure 4 It is a unfolded diagram of an ultra-hard aluminum alloy sheet metal part.

[0030] Figure 5 This is a structural diagram of a stage light.

[0031] Figure 6 This is a schematic diagram of the effect component (color palette).

[0032] Figure 7 This is a structural diagram of the effects component (CMY). Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this solution clearer, the implementation methods of this solution will be further described in detail below with reference to the accompanying drawings.

[0034] In this scheme, ultra-high strength aluminum alloys generally refer to 7-series aluminum alloys, which are Al-Zn-Mg-Cu alloys with ultra-high strength. They are the strongest aluminum alloys currently available, hence the name ultra-high strength aluminum alloys. Typical alloy grades include China's 7A04 (LC4) alloy, the United States' 7075 alloy, and the Soviet Union's B95 alloy. To further improve strength, based on these alloys, China developed the LC6 alloy, the United States developed the 7178 alloy, and the Soviet Union developed the B96 alloy.

[0035] Please see Figures 1-2 The diagram illustrates a flowchart and process curve for bending ultra-hard aluminum alloys. This method can be used to bend ultra-hard aluminum alloys that are prone to cracking or even fracture, ultimately producing ultra-hard aluminum alloy sheet metal parts. The bending process does not result in cracks or fractures, and the ultra-high hardness can be restored in a short time after bending, without the need for lengthy natural or artificial aging. It boasts advantages such as simple process, short time consumption, and low cost, making it highly suitable for industrial production and operation, and possessing extremely high economic value. This ultra-hard aluminum alloy bending method may include the following steps:

[0036] Step S1: Place the ultra-hard aluminum alloy sheet at 300-340℃ for 20-40 minutes and then cool it slowly.

[0037] Generally, aluminum alloys, after natural aging and hardening, can soften again after being heated to around 250℃ for a short time (a few seconds to two or three minutes) and then rapidly cooled, allowing for various cold deformation treatments. However, while the aforementioned method can soften ultra-hard aluminum alloys again, cracks or fractures still occur during bending. In a chance experiment, we discovered that bending ultra-hard aluminum alloy sheets after holding them at 300–340℃ for 20–40 minutes and then slowly cooling them not only prevented cracks or fractures but also facilitated rapid recovery of hardness later on.

[0038] As can be seen from Examples 1, 4, and 5, the preferred temperature for heat preservation in this step is 300–320°C, with 300°C being the most preferred, which is beneficial for saving energy.

[0039] The heat preservation time can be selected according to the thickness of the ultra-hard aluminum alloy sheet. For thicker ultra-hard aluminum alloy sheets, the heat preservation time can be appropriately increased. For 1.5mm thick ultra-hard aluminum alloy sheets, the heat preservation time is preferably 20-30 minutes, more preferably 20-25 minutes, and most preferably 20 minutes; for 3mm thick ultra-hard aluminum alloy sheets, the heat preservation time in this step is preferably 25 minutes, which helps to save time and costs.

[0040] Slow cooling can be natural cooling, spontaneously cooling to room temperature (15–40°C, preferably 25°C) in the atmosphere.

[0041] Step S2: Bend the ultra-hard aluminum alloy sheet that has been processed in step S1.

[0042] Bending refers to the process by which sheet metal undergoes elastic deformation under the pressure of the upper or lower die of a bending machine, followed by plastic deformation. In the initial stage of plastic bending, the sheet metal is freely bent. As the upper or lower die applies pressure, the sheet metal gradually comes into contact with the inner surface of the V-groove of the lower die, while the radius of curvature and bending lever arm gradually decrease. Pressure continues until the stroke ends, resulting in full contact between the upper and lower dies and the sheet metal at three points, thus completing a V-bend. In this case, the bending operation is completed using upper and lower dies fixed to the slider and table. A rounded upper die is selected, and the minimum bending radius R is chosen based on the sheet metal thickness t, where R ≈ 2.6t. The width of the V-groove of the lower die should satisfy B > 2(t + R) + 2. The bending line should be as perpendicular as possible to the fiber direction of the sheet metal.

[0043] Step S3: Place the ultra-hard aluminum alloy sheet processed in step S2 at 120-160°C for 8-24 hours and then cool it slowly.

[0044] The heat treatment strengthening principle of aluminum alloys differs from that of iron-carbon alloys such as alloy steel. After quenching, the crystalline structure is a supersaturated solid solution, resulting in relatively low strength and hardness, but good plasticity and toughness. Strength and hardness only significantly increase during subsequent aging. However, the aging process is very slow; the strength remains essentially unchanged for several hours, often requiring several days, dozens of days, or even longer. Unlike existing methods, in this solution, the ultra-hard aluminum alloy sheet, after step S1, only needs to be held at 120–180℃ for at least 8 hours to recover 95% of its original strength. This significantly shortens processing time and has extremely high economic value and market potential.

[0045] The heat preservation temperature should not be too high, as higher temperatures mean more energy consumption, and excessively high temperatures may also lead to over-aging. The heat preservation time should not be too short or too long. Less than 8 hours will not achieve the desired effect. Appropriately extending the heat preservation time beyond 8 hours will not have a significant impact on the result, but it will increase processing time and energy consumption. Excessive heat preservation (more than 24 hours) will also affect the performance of aluminum alloy sheet metal parts to some extent.

[0046] As can be seen from Examples 1 and 6-14, the temperature of the heat preservation treatment in this step is preferably 120-150℃, more preferably 120-130℃, and most preferably 125℃; the heat preservation treatment time is preferably 8-12 hours, more preferably 8-10 hours, more preferably 8-9 hours, and most preferably 8 hours; this is beneficial for further saving energy consumption and time costs.

[0047] Slow cooling can be natural cooling, spontaneously cooling to room temperature (15–40°C, preferably 25°C) in the atmosphere.

[0048] Optionally, the above-mentioned method for bending ultra-hard aluminum alloys may further include the following steps:

[0049] Step S0: Calculate the bending unfolding dimensions based on the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0050] This step is performed before step S1. The bending effect of the ultra-hard aluminum alloy sheet is as follows: Figure 3 As shown, the unfolded effect is as follows Figure 4 As shown, the calculation formula for bending unfolding is as shown in equation (1):

[0051] L=A+B+C-nK (1)

[0052] Where L represents the unfolded length, A, B, and C represent the external dimensions of the material, n represents the number of bends, and K represents the bending coefficient, which can be found in Table 1.

[0053] Table 1 Minimum Bending Coefficient of Aluminum Plates

[0054] 1 Aluminum plate 0.8mm 90° 1.50 2 Aluminum plate 1.0mm 90° 1.60 3 Aluminum plate 1.2mm 90° 2.10 4 Aluminum plate 1.5mm 90° 2.45 5 Aluminum plate 1.6mm 90° 2.50 6 Aluminum plate 1.8mm 90° 2.70 7 Aluminum plate 2.0mm 90° 3.25 8 Aluminum plate 2.3mm 90° 3.60 9 Aluminum plate 2.5mm 90° 4.20 10 Aluminum plate 3.0mm 90° 4.70 11 Aluminum plate 3.2mm 90° 5.00 12 Aluminum plate 3.5mm 90° 5.90 13 Aluminum plate 4.0mm 90° 6.80 14 Aluminum plate 5.0mm 90° 8.10

[0055] The ultra-hard aluminum alloy sheet metal parts produced by the above bending method can be used in stage lights to make structural components of stage lights, achieving the goal of reducing the weight of stage light structural components by 50%. Figures 5-7The structure of a stage light and its effects components is shown. The stage light includes a lamp head 100 and a support base 200. The support base 200 includes a housing 210 and a support arm 220 pivotally connected to the housing 210. The lamp head 100 is pivotally connected to the support arm 220 on both sides. Support plates 221 are provided on the left and right sides of the support arm 220, and frame plates 110 are provided on the left and right sides of the lamp head 100. The frame plates 110 on the left and right sides of the lamp head are pivotally connected to the support plates 221 on the left and right sides of the support arm 220, respectively. The space between the two frame plates 101 is used to install light-emitting components, effects components 110, etc. The effects components 110 are connected to the frame plates 110 via mounting plates 111. The left and right sides of the mounting plates 111 are connected to the two frame plates 110, respectively. The frame plates 101, support plates 221, and mounting plates 111 are all structural components of the stage light and can all be made from ultra-hard aluminum alloy sheet metal using the aforementioned bending method.

[0056] To enable those skilled in the art to better understand this solution, the following detailed description is provided in conjunction with specific embodiments. The ultra-hard aluminum alloy sheet used in the embodiments is a 7075-T6 cold-rolled and quenched sheet product sold by a metal sheet manufacturer. It has undergone solution treatment and aging, and is an Al-Zn-Mg-Cu system heat-treatable ultra-hard, ultra-high-strength aluminum with poor plasticity. It is 1.5mm thick, and the measured σ of the cold-rolled and quenched sheet is... b =572 MPa, σ 0.2 =503MPa; its composition includes Si:0.17wt%, Fe:0.37wt%, Cu:1.5wt%, Mn:0.19wt%, Mg:2.7wt%, Cr:0.2wt%, Zn:5.8wt%, Ti:0.03wt%, other <0.15wt%, balance Al.

[0057] Example 1

[0058] The ultra-hard aluminum alloy bending method in this embodiment includes the following steps:

[0059] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0060] S1. Heat the resistance furnace to 300℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 20 minutes, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0061] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0062] S3. Heat the resistance furnace to 125°C, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 8 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0063] Example 2

[0064] The ultra-hard aluminum alloy bending method in this embodiment includes the following steps:

[0065] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0066] S1. Heat the resistance furnace to 300℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 30 minutes, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0067] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0068] S3. Heat the resistance furnace to 125°C, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 8 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0069] Example 3

[0070] The ultra-hard aluminum alloy bending method in this embodiment includes the following steps:

[0071] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0072] S1. Heat the resistance furnace to 300℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 40 minutes, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0073] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0074] S3. Heat the resistance furnace to 125°C, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 8 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0075] Example 4

[0076] The ultra-hard aluminum alloy bending method in this embodiment includes the following steps:

[0077] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0078] S1. Heat the resistance furnace to 320℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 20 minutes, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0079] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0080] S3. Heat the resistance furnace to 125°C, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 8 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0081] Example 5

[0082] The ultra-hard aluminum alloy bending method in this embodiment includes the following steps:

[0083] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0084] S1. Heat the resistance furnace to 340℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 20 minutes, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0085] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0086] S3. Heat the resistance furnace to 125°C, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 8 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0087] Example 6

[0088] The ultra-hard aluminum alloy bending method in this embodiment includes the following steps:

[0089] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0090] S1. Heat the resistance furnace to 300℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 20 minutes, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0091] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0092] S3. Heat the resistance furnace to 120°C, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 8 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0093] Example 7

[0094] The ultra-hard aluminum alloy bending method in this embodiment includes the following steps:

[0095] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0096] S1. Heat the resistance furnace to 300℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 20 minutes, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0097] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0098] S3. Heat the resistance furnace to 130°C, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 8 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0099] Example 8

[0100] The ultra-hard aluminum alloy bending method in this embodiment includes the following steps:

[0101] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0102] S1. Heat the resistance furnace to 300℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 20 minutes, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0103] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0104] S3. Heat the resistance furnace to 140℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 8 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0105] Example 9

[0106] The ultra-hard aluminum alloy bending method in this embodiment includes the following steps:

[0107] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0108] S1. Heat the resistance furnace to 300℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 20 minutes, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0109] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0110] S3. Heat the resistance furnace to 150°C, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 8 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0111] Example 10

[0112] The ultra-hard aluminum alloy bending method in this embodiment includes the following steps:

[0113] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0114] S1. Heat the resistance furnace to 300℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 20 minutes, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0115] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0116] S3. Heat the resistance furnace to 160℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 8 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0117] Example 11

[0118] The ultra-hard aluminum alloy bending method in this embodiment includes the following steps:

[0119] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0120] S1. Heat the resistance furnace to 300℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 20 minutes, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0121] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0122] S3. Heat the resistance furnace to 125°C, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 9 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0123] Example 12

[0124] The ultra-hard aluminum alloy bending method in this embodiment includes the following steps:

[0125] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0126] S1. Heat the resistance furnace to 300℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 20 minutes, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0127] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0128] S3. Heat the resistance furnace to 125°C, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 10 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0129] Example 13

[0130] The ultra-hard aluminum alloy bending method in this embodiment includes the following steps:

[0131] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0132] S1. Heat the resistance furnace to 300℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 20 minutes, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0133] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0134] S3. Heat the resistance furnace to 125°C, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 12 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0135] Example 14

[0136] The ultra-hard aluminum alloy bending method in this embodiment includes the following steps:

[0137] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0138] S1. Heat the resistance furnace to 300℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 20 minutes, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0139] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0140] S3. Heat the resistance furnace to 125°C, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 24 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0141] Comparative Example 1

[0142] The bending method for ultra-hard aluminum alloys in this comparative example includes the following steps:

[0143] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0144] S1. Heat the resistance furnace to 280℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 20 minutes, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0145] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0146] S3. Heat the resistance furnace to 125°C, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 8 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0147] Comparative Example 2

[0148] The bending method for ultra-hard aluminum alloys in this comparative example includes the following steps:

[0149] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0150] S1. Heat the resistance furnace to 300℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 5 minutes, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0151] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0152] S3. Heat the resistance furnace to 125°C, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 8 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0153] Comparative Example 3

[0154] The bending method for ultra-hard aluminum alloys in this comparative example includes the following steps:

[0155] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0156] S1. Heat the resistance furnace to 300℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 10 minutes, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0157] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0158] S3. Heat the resistance furnace to 125°C, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 8 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0159] Comparative Example 4

[0160] The bending method for ultra-hard aluminum alloys in this comparative example includes the following steps:

[0161] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0162] S1. Heat the resistance furnace to 300℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 15 minutes, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0163] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0164] S3. Heat the resistance furnace to 125°C, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 8 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0165] Comparative Example 5

[0166] The bending method for ultra-hard aluminum alloys in this comparative example includes the following steps:

[0167] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0168] S1. Heat the resistance furnace to 320℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 15 minutes, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0169] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0170] S3. Heat the resistance furnace to 125°C, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 8 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0171] Comparative Example 6

[0172] The bending method for ultra-hard aluminum alloys in this comparative example includes the following steps:

[0173] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0174] S1. Heat the resistance furnace to 340℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 15 minutes, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0175] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0176] S3. Heat the resistance furnace to 125°C, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 8 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0177] Comparative Example 7

[0178] The bending method for ultra-hard aluminum alloys in this comparative example includes the following steps:

[0179] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0180] S1. Heat the resistance furnace to 300℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 20 minutes, remove it from the resistance furnace, and quickly cool it to room temperature.

[0181] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0182] S3. Heat the resistance furnace to 125°C, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 8 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0183] Comparative Example 8

[0184] The bending method for ultra-hard aluminum alloys in this comparative example includes the following steps:

[0185] S0. Calculate the bending unfolded dimension L = A + B + C - nK = 10 + 5 + 5 - 2 × 2.45 = 15.1 mm according to the neutral layer theory, and then punch and cut the ultra-hard aluminum alloy sheet.

[0186] S1. Heat the resistance furnace to 300℃, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 20 minutes, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0187] S2. Select a rounded upper die with a bending radius of 4mm and a V-shaped lower die with a groove width of 11mm and fix them on the table of the bending machine. Place the heat-insulated ultra-hard aluminum alloy sheet into the machine and perform the bending operation. The bending line should be as perpendicular as possible to the fiber direction of the ultra-hard aluminum alloy sheet.

[0188] S3. Heat the resistance furnace to 125°C, put in the ultra-hard aluminum alloy sheet, keep it at that temperature for 30 hours, remove it from the resistance furnace, and let it cool naturally to room temperature in the air.

[0189] The hardness and strength of the ultra-hard aluminum alloy sheet metal parts prepared in Examples 1-14 and Comparative Examples 1-8 were tested. The hardness was measured using a handheld Webster hardness tester, and the strength was measured using a room temperature universal tensile testing machine. The results are shown in the table below.

[0190]

[0191] Obviously, the above embodiments of this solution are merely examples for clearly illustrating this solution, and are not intended to limit the implementation of this solution. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this solution should be included within the scope of protection of the claims of this solution.

Claims

1. A method for bending ultra-hard aluminum alloys, characterized in that, The method includes the following steps: S1. Place the ultra-hard aluminum alloy sheet at 300~340℃ for 20~40 minutes and then slowly cool it to room temperature, wherein the ultra-hard aluminum alloy sheet is in the T6 state; S2. Bend the ultra-hard aluminum alloy sheet that has been processed in step S1; S3. Place the ultra-hard aluminum alloy sheet treated in step S2 at 120~160℃ for 8~12 hours, and then cool it slowly.

2. The bending method for the ultra-hard aluminum alloy according to claim 1, characterized in that, In step S1, the temperature of the heat preservation treatment is 300~320℃, and / or the heat preservation treatment time is 20~30 minutes, and / or the slow cooling is natural cooling in the air.

3. The bending method for the ultra-hard aluminum alloy according to claim 2, characterized in that, In step S1, the temperature of the heat preservation treatment is 300℃, and / or the heat preservation treatment time is 20 minutes.

4. The bending method of the super-hard aluminum alloy according to any one of claims 1 to 3, characterized in that, In step S2, the bending radius R and thickness t of the ultra-hard aluminum alloy sheet must satisfy the following condition: R ≥ 2.6t.

5. The bending method of the super-hard aluminum alloy according to any one of claims 1 to 3, characterized in that, In step S2, the bending line is perpendicular to the fiber direction of the ultra-hard aluminum alloy sheet.

6. The bending method of the super-hard aluminum alloy according to any one of claims 1 to 3, characterized in that, In step S3, the temperature of the heat preservation treatment is 120~150℃, and / or the heat preservation treatment time is 8~10 hours, and / or the slow cooling is natural cooling in the air.

7. The bending method for the ultra-hard aluminum alloy according to claim 6, characterized in that, In step S3, the temperature of the heat preservation treatment is 120~130℃, and / or the heat preservation treatment time is 8~9 hours, and / or the slow cooling is natural cooling to room temperature in the air.

8. The bending method for the ultra-hard aluminum alloy according to claim 7, characterized in that, In step S3, the temperature for heat preservation is 125°C, and / or the heat preservation time is 8 hours.

9. The bending method of the super-hard aluminum alloy according to any one of claims 1 to 3, characterized in that, The thickness of the ultra-hard aluminum alloy sheet is 1.5±0.3mm.

10. A super-hard aluminum alloy sheet metal part, characterized in that, The ultra-hard aluminum alloy sheet metal part is formed by the method described in any one of claims 1 to 9.

11. A stage light, characterized in that, The structural components of the stage light are made of the ultra-hard aluminum alloy sheet metal parts as described in claim 10.

12. The stage light according to claim 11, characterized in that, The structural component is a frame plate on the left and right sides inside the lamp head, or a mounting plate on both sides connected to the frame plate for mounting effect components, or a support plate inside the arm for pivotally connecting with the frame plate.

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