Preparation process of high-performance copper alloy material and processing system thereof

Abstract

This invention discloses a high-performance copper alloy material preparation process and processing system, relating to the field of copper alloy material technology, including the following steps: S1, preparing electrolytic copper 88.0-95.0%, tin 2.0-5.0%, nickel plate 1.0-3.0%, Ce-Zr master alloy 0.55-3.5%, and graphite powder 0.3-0.8% by weight percentage; S2, adding the electrolytic copper to a medium-frequency induction furnace, heating to 1050-1100℃ to melt, and starting a double-helix stirring; S3, When the copper liquid temperature is stabilized at 1100-1150℃, nickel plates, tin ingots, and Ce-Zr master alloy are added sequentially, with stirring for 5-8 minutes after each addition; S4, graphite powder is dispersed in argon gas and introduced into the medium-frequency induction furnace along with the argon gas flow. In the above technical solution, by adding excess graphite and dispersing graphite with argon gas, the purpose of uniform oxygen reaction and deoxygenation is achieved. Precise oxygen introduction and closed-loop carbon removal control are then carried out to achieve deep deoxidation of the melt, solving the problems of incomplete deoxidation and excessive carbon residue in traditional processes.

Description

Technical Field

[0001] This invention relates to the field of copper alloy materials technology, specifically to a high-performance copper alloy material preparation process and processing system. Background Technology

[0002] Copper alloys are widely used in electronics, power, aerospace and other fields due to their excellent electrical conductivity and ductility. However, traditional copper alloys have a trade-off between strength and electrical conductivity; when alloying elements are added to improve strength, it can easily lead to a significant decrease in conductivity.

[0003] Existing processing systems often use conventional phosphorus copper deoxidizers during the smelting stage. Although this can reduce the oxygen content of the melt from the initial 150-200ppm to 70-90ppm, phosphorus remains in the matrix as Cu3P compounds, leading to a decrease in the material's conductivity, which cannot meet the requirements of high-end electronics applications. Furthermore, it is prone to intergranular corrosion in salt spray environments, resulting in an increased corrosion rate. Adding graphite deoxidizers can achieve deoxidation without metallic impurities, but controlling carbon content is difficult, easily leading to a dilemma of incomplete deoxidation or excessive carbon residue. If the amount of graphite added is insufficient, the deoxidation effect is limited, and the oxygen content of the melt still reaches 90-110ppm, resulting in excessive Cu2O in the ingot after casting. If the amount of graphite added is too high, although the oxygen content can be reduced to 50-60ppm, the carbon residue exceeds the standard, which harms the material's conductivity and ductility. Summary of the Invention

[0004] The purpose of this invention is to provide a high-performance copper alloy material preparation process and processing system to overcome the shortcomings of the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-performance copper alloy material preparation process, comprising the following steps:

[0006] S1, by weight percentage, consists of 88.0-95.0% electrolytic copper, 2.0-5.0% tin, 1.0-3.0% nickel plate, 0.55-3.5% Ce-Zr master alloy, and 0.3-0.8% graphite powder;

[0007] S2, add electrolytic copper to a medium-frequency induction furnace, heat to 1050-1100℃ to melt, and start double-helix stirring;

[0008] S3, when the copper liquid temperature is stable at 1100-1150℃, add nickel plate, tin ingot and Ce-Zr master alloy in sequence, stirring for 5-8 minutes after each addition;

[0009] S4. Disperse graphite powder in argon gas and introduce it into the medium frequency induction furnace with the argon gas flow. Increase the stirring speed to 40-50 r / min and stir for 10-15 min to make the oxygen content of the melt ≤50ppm.

[0010] S5. Detect the carbon content. If C > 0.05%, introduce a mixture of oxygen and argon gas at a volume ratio of 1:10, and react for 3-5 minutes until C stabilizes at 0.02-0.05%.

[0011] S6, heat the melt to 1150-1200℃, and discharge the material after re-inspecting the composition to ensure it meets the standards;

[0012] S7. Pour the melt into the casting mold and demold when the ingot temperature drops to 300-400℃.

[0013] S8, after demolding, is sent into the annealing furnace.

[0014] Preferably, in S5, when sampling carbon content, multiple sampling points are used to obtain the average value.

[0015] Preferably, the Ce-Zr master alloy has a Ce content of 20% and a Zr content of 10%.

[0016] Preferably, in step S7, a release agent consisting of graphite powder and ethanol is applied to the inner wall of the casting mold to a thickness of 5-10 μm.

[0017] A high-performance copper alloy material processing system includes a rotating frame, several casting molds mounted on the rotating frame, and further includes:

[0018] frame;

[0019] A transverse frame is slidably connected to the frame, and a support arm is rotatably connected to the transverse frame. One end of the support arm is provided with a semi-circular ring for supporting the lifting component.

[0020] The anti-detachment component includes a closing bolt and a transmission part that are slidably connected to the support arm;

[0021] The movement of the transverse frame toward the casting mold includes a first stage, a second stage, a third stage, and a reset stage where the transverse component moves away from the casting mold. In the first stage, the transmission unit drives the closing bolt to move toward the semi-circular ring so as to connect the two ends of the semi-circular ring through the closing bolt.

[0022] In the second stage, the support arm rotates 180 degrees in the first direction, at which point the semicircular ring is above the casting mold, so that the lower part of the lifting component is submerged in the melt inside the casting mold.

[0023] In the third stage, the transmission unit drives the closing bolt to retract;

[0024] During the reset phase, the transverse frame is reset to its initial position, during which the support arm rotates 180 degrees in the second direction.

[0025] Preferably, it also includes a drive unit for driving the transverse frame to move.

[0026] Preferably, the transmission unit includes a moving block, a first rack, a gear, a second rack, a tension block, a first tension member, a stop block, a second tension member, a steel cable, and an anchor block. The moving block is slidably connected to the support arm, and one end of the moving block is connected to the closing bolt. The first rack and the moving block are fixedly connected. The second rack is slidably connected to the lower part of the support arm. The first rack and the second rack are connected by gear transmission. The stop block is fixedly installed inside the support arm. The stop block and the first rack are connected by the second tension member. The tension block is slidably connected inside the support arm. The tension block and the second rack are connected by the first tension member. The anchor block is slidably connected to the frame. The anchor block and the tension block are connected by a steel cable.

[0027] Preferably, the assembly includes a self-locking component comprising a lifting frame, an inclined block, a first elastic element, a base, a second elastic element, a lower pressure surface, and a pressing plate. A groove is formed on one side of the anchor block. The base is fixedly installed on one side of the frame. The lifting frame is slidably connected to one side of the frame. The second elastic element applies an upward thrust to the lifting frame. The inclined block is slidably disposed on the upper part of one end of the lifting frame. The first elastic element applies a thrust to the inclined block in the direction of the anchor block, causing the inclined block to embed into the groove. The lower pressure surface is disposed at the other end of the lifting frame. The pressing plate is fixedly installed on the transverse frame.

[0028] Preferably, a clearance opening is provided on one side of the frame. In the third stage, the extrusion plate extrudes the lower pressure surface, causing the lifting frame to move downward and the inclined block to enter the clearance opening.

[0029] Preferably, the support arm has a rotating shaft that is rotatably connected to the transverse frame. A trigger plate is provided along the travel stroke of the rotating shaft, and the rotating shaft and the trigger plate are provided with matching teeth.

[0030] In the above technical solution, the present invention provides a high-performance copper alloy material preparation process and processing system, which achieves uniform deoxygenation by adding excessive graphite and dispersing graphite with argon gas, and performs precise closed-loop carbon removal control by introducing oxygen to achieve deep deoxidation of the melt, thus solving the problems of incomplete deoxidation and excessive carbon residue in traditional processes. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0032] Figure 1 This is a schematic diagram of the overall structure of a high-performance copper alloy material preparation process and its processing system according to the present invention;

[0033] Figure 2 This is a schematic diagram showing the lifting component being placed into the casting mold in the high-performance copper alloy material preparation process and processing system of the present invention;

[0034] Figure 3 This is a schematic diagram of the lifting ring after it is inserted into the semi-circular ring, which is part of the high-performance copper alloy material preparation process and processing system of the present invention.

[0035] Figure 4 This invention relates to a high-performance copper alloy material preparation process and its processing system. Figure 3 Partially broken view in the middle;

[0036] Figure 5 This invention relates to a high-performance copper alloy material preparation process and its processing system. Figure 4 Enlarged view of point A in the middle;

[0037] Figure 6 This invention relates to a high-performance copper alloy material preparation process and its processing system. Figure 4 Enlarged view of point B in the middle;

[0038] Figure 7 This is a schematic diagram of the first stage of a high-performance copper alloy material preparation process and its processing system according to the present invention;

[0039] Figure 8 This invention relates to a high-performance copper alloy material preparation process and its processing system. Figure 7 Enlarged view of point C;

[0040] Figure 9 This is a schematic diagram of the second stage of a high-performance copper alloy material preparation process and its processing system according to the present invention;

[0041] Figure 10 This is a schematic diagram of the third stage of the preparation process and processing system for a high-performance copper alloy material according to the present invention;

[0042] Figure 11 This invention relates to a high-performance copper alloy material preparation process and its processing system. Figure 10 A magnified diagram of point D in the middle.

[0043] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Drive unit; 3. Transverse frame; 4. Support arm; 6. Anti-detachment component; 7. Semicircular ring; 8. Self-locking component; 9. Anchor block; 11. Alternating slot; 41. Rotating shaft; 42. Trigger plate; 61. Closing bolt; 62. Moving block; 63. First rack; 64. Gear; 65. Second rack; 66. Pulling block; 67. First pulling component; 68. Stop block; 69. Second pulling component; 81. Lifting frame; 82. Inclined block; 83. First elastic component; 84. Base; 85. Second elastic component; 86. Lower pressing surface; 87. Extrusion plate; 91. Steel cable; 92. Groove; 101. Rotating frame; 102. Casting mold; 103. Lifting component. Detailed Implementation

[0044] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0045] Please see Figure 1-11 The present invention provides a high-performance copper alloy material preparation process, which includes the following steps:

[0046] S1, by weight percentage, consists of 88.0-95.0% electrolytic copper, 2.0-5.0% tin, 1.0-3.0% nickel plate, 0.55-3.5% Ce-Zr master alloy, and 0.3-0.8% graphite powder;

[0047] S2, add electrolytic copper to a medium-frequency induction furnace, heat to 1050-1100℃ to melt, and start double-helix stirring;

[0048] S3, when the copper liquid temperature is stable at 1100-1150℃, add nickel plate, tin ingot and Ce-Zr master alloy in sequence, stirring for 5-8 minutes after each addition;

[0049] S4. Disperse graphite powder in argon gas and introduce it into the medium frequency induction furnace with the argon gas flow. Increase the stirring speed to 40-50 r / min and stir for 10-15 min to make the oxygen content of the melt ≤50ppm.

[0050] S5. Detect the carbon content. If C > 0.05%, introduce a mixture of oxygen and argon gas at a volume ratio of 1:10, and react for 3-5 minutes until C stabilizes at 0.02-0.05%.

[0051] S6, heat the melt to 1150-1200℃, and discharge the material after re-inspecting the composition to ensure it meets the standards;

[0052] S7. Pour the melt into a casting mold preheated to 200-300℃, and demold when the ingot temperature drops to 300-400℃.

[0053] S8, after demolding, the castings are then sent to the annealing furnace after rough rolling, intermediate rolling and finish rolling;

[0054] S9 will be inspected before being put into storage.

[0055] Preferably, in S5, when sampling carbon content, multiple sampling points are used to obtain the average value.

[0056] Preferably, the Ce-Zr master alloy has a Ce content of 20% and a Zr content of 10%.

[0057] Preferably, in step S7, a release agent consisting of graphite powder and ethanol is applied to the inner wall of the casting mold to a thickness of 5-10 μm.

[0058] Example 1;

[0059] Raw material formula: 92.0 kg electrolytic copper, 3.5 kg tin ingot, 2.0 kg nickel plate, 2.0 kg Ce-Zr master alloy, 0.5 kg graphite powder;

[0060] The initial stage involves heating to 1080℃ to melt copper, with a stirring speed of 35 r / min. At 1120℃, nickel plates, tin ingots, and Ce-Zr master alloy are added, each stirred for 6 min, with elemental deviation ≤0.08%. 0.5 kg of graphite powder is dispersed in argon gas, and the mixed argon gas is introduced at a flow rate of 8 L / min, with a stirring speed of 40 r / min for 12 min, resulting in an oxygen content of 42 ppm in the melt. The initial carbon content is 0.06%. An oxygen-argon mixture (1:10) is introduced at a flow rate of 4 L / min, reacting for 4 min, resulting in a final carbon content of 0.03%. The final stage involves heating to 1180℃, and a retest confirms the composition meets the standards.

[0061] The casting mold is preheated to 250℃, the cooling rate is 65℃ / s, the demolding temperature is 350℃, the ingot defect rate is 2.1%, the grain size is 18μm, and the density is 99.6%.

[0062] Performance testing showed a tensile strength of 590 MPa, conductivity of 87% IACS, elongation of 13.5%, a salt spray corrosion rate of 0.003 mm / a after 1000 hours, and melt fluidity that was 18% higher than that of traditional processes.

[0063] Example 2;

[0064] Raw material formula: 89.0 kg copper, 4.5 kg tin ingot, 3.0 kg nickel plate, 2.75 kg Ce-Zr master alloy, 0.7 kg graphite powder;

[0065] The initial stage involves heating to 1100℃ to melt electrolytic copper, with a stirring speed of 40 r / min. At 1140℃, nickel plates, tin ingots, and Ce-Zr master alloy are added, each stirred for 8 min, with an elemental deviation ≤0.09%. 0.7 kg of graphite powder is dispersed in argon gas, and the mixed argon gas is introduced at a flow rate of 10 L / min, with a stirring speed of 45 r / min for 15 min, resulting in an oxygen content of 38 ppm in the melt. The initial carbon content is 0.08%. An oxygen-argon mixture (1:10) is introduced at a flow rate of 5 L / min, and the reaction is carried out for 5 min, resulting in a final carbon content of 0.04%. The final stage involves heating to 1200℃, and a retest confirms that the composition meets the standards.

[0066] The casting mold is preheated to 280℃, the cooling rate is 75℃ / s, the demolding temperature is 380℃, the ingot defect rate is 1.8%, the grain size is 16μm, and the density is 99.7%.

[0067] Performance testing: tensile strength 630MPa, conductivity 85.5%IACS, elongation 12.3%, salt spray corrosion rate 0.002mm / a after 1000h, and melt fluidity improved by 19% compared to traditional processes.

[0068] In this case, the copper alloy smelting temperature is 1150-1200℃. The reactivity of carbon with oxygen is much higher than that of copper with oxygen. This is the fundamental premise for avoiding oxygen residue. From the perspective of the Gibbs free energy (ΔG) of the chemical reaction:

[0069] The ΔG for the carbon oxidation reaction (C + O2 = CO2↑) is -394.4 kJ / mol (1200℃).

[0070] The ΔG for the copper oxidation reaction (2Cu + O2 = Cu2O) is -129.7 kJ / mol (1200℃).

[0071] The smaller ΔG is, the more spontaneous the reaction is. The spontaneous reaction tendency of carbon and oxygen is more than 3 times that of copper. Therefore, the introduced oxygen will preferentially react with free carbon and carbides in the melt, rather than react with the copper matrix, thereby reducing the probability of oxygen combining with copper from the source.

[0072] During the decarburization stage, carbon in the melt exists in the form of free carbon particles and dissolved carbon. Strong convection is generated through double-helix stirring, resulting in extremely high contact efficiency between carbon and oxygen. Copper, on the other hand, exists as a continuous matrix, its surface enveloped by carbon particles and melt convection. Oxygen has difficulty directly contacting copper atoms. During decarburization, most of the oxygen is used to oxidize carbon; only a small amount may briefly contact copper, but it will be quickly reduced by unreacted carbon (Cu₂O + C = 2Cu + CO↑). Ultimately, stable Cu₂O oxide inclusions will not form. A high-frequency infrared carbon-sulfur analyzer is used during the decarburization stage to detect carbon content once per minute, with multiple samples taken from the furnace core, furnace wall, and center to obtain the average value, ensuring accurate carbon content detection.

[0073] When the carbon content is detected to drop to 0.05%, the oxygen supply is immediately stopped and switched to pure argon to avoid oxygen excess caused by continued oxygen supply.

[0074] This invention presents a scheme for deoxidizing excess graphite and then reintroducing oxygen to remove carbon. By prioritizing the reaction and designing a carbon-first oxygen absorption mechanism, along with precise parameter control and full-process oxygen management, the problem of residual oxygen after carbon removal can be completely avoided. This design is not a contradictory operation, but rather an innovative solution that balances deep deoxidation and precise carbon control. By utilizing the strong diffusivity of argon to disperse graphite powder, the reaction between graphite and oxygen can be made to stably control the oxygen content of the molten liquid at ≤50ppm, thereby reducing CuO and Cu2O inclusions in the ingot from the source.

[0075] In another embodiment of the present invention, in step S7, the molten liquid is poured into the casting mold 102 to form a copper ingot. With dimensions of 40cm × 30cm × 100cm, its mass is approximately 1000 kg. Therefore, a lifting component 103 needs to be placed before the molten liquid solidifies to facilitate lifting the copper ingot after solidification. In the prior art, there are three existing methods for placing the lifting component 103:

[0076] Disadvantages of manual operation: Workers need to wear heat-resistant clothing and use industrial crucible tongs longer than 5 meters to place the lifting parts close to the casting mold 102 and wait for the molten liquid to solidify. In addition, the large amount of heat generated by the melting point of copper at 1083℃ poses a safety risk.

[0077] Disadvantages of industrial robotic arms: They rely on end servo motors to control the clamping and releasing, but the servo motors are too close to the high-temperature casting mold 102, and the high temperature will severely shorten their service life.

[0078] Pre-placement has drawbacks: If the lifting components are placed before casting, they lack support and are prone to tipping over, potentially becoming completely submerged in the copper ingot; furthermore, it interferes with post-cast impurity removal operations, affecting the quality of the copper ingot. Therefore, a high-performance copper alloy material processing system is proposed to solve these problems.

[0079] A high-performance copper alloy material processing system includes a rotating frame 101, a plurality of casting molds 102 disposed on the rotating frame 101, and further includes:

[0080] Rack 1;

[0081] A transverse frame 3 is slidably connected to the frame 1. A support arm 4 is rotatably connected to the transverse frame 3. One end of the support arm 4 is provided with a semi-circular ring 7 for supporting the lifting component 103.

[0082] Anti-detachment component 6, which includes a closing bolt 61 slidably connected to the support arm 4 and a transmission part;

[0083] The movement of the transverse frame 3 toward the casting mold 102 includes a first stage, a second stage, a third stage, and a reset stage where the transverse component 3 moves away from the casting mold 102. In the first stage, the transmission unit drives the closing bolt 61 to move toward the semi-circular ring 7 so as to connect the two ends of the semi-circular ring 7 through the closing bolt 61.

[0084] In the second stage, the support arm 4 rotates 180 degrees in the first direction, at which time the semicircular ring 7 is above the casting mold 102, so that the lower part of the lifting part 103 is submerged in the melt inside the casting mold 102.

[0085] In the third stage, the transmission unit drives the closing bolt 61 to retract;

[0086] During the reset phase, the transverse frame 3 is reset to its initial position, during which the support arm 4 rotates 180 degrees in the second direction.

[0087] When the transverse frame 3 starts to move toward the casting mold 102, the transmission part is triggered synchronously to push the closing bolt 61 toward the semi-circular ring 7 until the closing bolt 61 covers the first and last ends of the semi-circular ring 7 and locks the lifting part 103 inside the semi-circular ring to ensure that the lifting part 103 will not come off during the 180-degree rotation of the support arm 4.

[0088] In the second stage, the transverse frame 3 continues to move. At this time, the pivot 41 of the support arm 4 contacts the preset trigger plate 42 (tooth engagement), triggering the support arm 4 to rotate 180 degrees in the first direction. After rotation, the semicircular ring 7 is just suspended above the casting mold 102, and the lower part of the lifting part 103 is naturally immersed in the molten liquid, completing the placement. Without the need for manual or robotic arms to come into close contact with the high-temperature molten material, the lifting part 103 can be embedded at a preset depth, preparing for the subsequent lifting of copper ingots.

[0089] In the third stage, when the transverse frame 3 moves to the unlocking position, the closing bolt 61 moves away from the semi-circular ring 7, and the closing bolt 61 retracts, so the semi-circular ring 7 is in the open state.

[0090] At this time, during the reset phase, after unlocking, the drive unit 2 rotates in the reverse direction, driving the transverse frame 3 to move to the initial position. During the movement, the support arm 4 rotates 180 degrees in the second direction to return to the initial horizontal posture; the entire system returns to the initial state and can prepare for the next casting mold 102 operation.

[0091] The core transmission components are kept away from the high-temperature radiation of the casting mold 102, avoiding the problems of component aging and shortened lifespan caused by high temperature. Automatic placement and reset are achieved in one action without manual adjustment. It is adapted to the cyclic operation needs of multiple casting molds 102 on the rotating frame 101, improving production efficiency. The lifting component 103 is accurately delivered after the molten liquid is cleaned of impurities, and it has been unlocked and removed before the cleanup operation, so it will not interfere with the cleanup operation and ensure the cleanup effect of the molten liquid.

[0092] In another embodiment of the present invention, a drive unit 2 is further included, which is used to drive the transverse frame 3 to move. The drive unit 2 includes a motor and a lead screw. When the rotating frame 101 transfers the casting mold 102 to the designated work position, the motor automatically starts after receiving a signal, driving the transverse frame 3 to complete four-stage actions according to a preset sequence. After the lifting component 103 is placed, the motor reverses and drives the transverse frame to reset, while triggering the rotating frame 101 to rotate the next casting mold 102, forming a closed-loop collaboration between the rotating frame 101, the drive unit 2, and the transverse frame 3, greatly reducing manual intervention.

[0093] In another embodiment of the present invention, the transmission unit includes a moving block 62, a first rack 63, a gear 64, a second rack 65, a tension block 66, a first tension member 67, a stop block 68, a second tension member 69, a steel cable 91, and an anchor block 9. The moving block 62 is slidably connected to the support arm 4, and one end of the moving block 62 is connected to the closing bolt 61. The first rack 63 and the moving block 62 are fixedly connected. The second rack 65 is slidably connected to the lower part of the support arm 4. The first rack 63 and the second rack 65 are connected by a gear 64. The stop block 68 is fixedly installed inside the support arm 4. The stop block 68 and the first rack 63 are connected by the second tension member 69. The tension block 66 is slidably connected inside the support arm 4. The tension block 66 and the second rack 65 are connected by the first tension member 67. The anchor block 9 is slidably connected to the frame 1. The anchor block 9 and the tension block 66 are connected by a steel cable 91. The support arm 4 has a rotating shaft 41, which is rotatably connected to the transverse frame 3. A trigger plate 42 is provided on the moving stroke of the rotating shaft 41, and the rotating shaft 41 and the trigger plate 42 are provided with matching teeth.

[0094] First, as attached Figure 4-7As shown, this is the first stage. The transverse frame 3 begins to move towards the casting mold 102. At this time, the self-locking component 8 is in the locked state, the anchor block 9 is fixed in the initial position of the frame 1, and the steel cable 91 is in a slack state. As the movement proceeds, the steel cable 91 pulls the tension block 66 to move. When the tension block 66 moves, it will pull the second rack 65 to move through the action of the first tension member 67. When the second rack 65 moves, it will drive the gear 64 to rotate. When the gear 64 rotates, it will drive the first rack 63. To resist the pulling force of the second tension member 69, the first rack 63 will move in the opposite direction of the second rack 65. In this way, the first rack 63 synchronously drives the moving block 62 to slide along the support arm 4, and finally pushes the closing bolt 61 to move towards the semi-circular ring 7 until the closing bolt 61 covers the first and last ends of the semi-circular ring 7, thus completing the restriction of the lifting member 103. By using the pre-tightening force of the second tension member 69 as a power source, the closing bolt 61 is automatically driven to close when the steel cable 91 is pulled, ensuring that the lifting member 103 does not fall off during movement and rotation.

[0095] In the second phase, as shown in the attached document Figure 7-9 As shown, at this time, the transverse frame 3 continues to move above the casting mold 102. At this time, the pivot 41 of the support arm 4 meshes with the teeth of the preset trigger plate 42, triggering the support arm 4 to rotate 180 degrees in the first direction. After rotation, the semi-circular ring 7 just hangs above the casting mold 102, and the lower part of the lifting part 103 is naturally immersed in the molten liquid.

[0096] In the third phase, as shown in the appendix Figure 9-11 As shown, when the transverse frame 3 moves to the unlocked position, the self-locking component 8 unlocks, and the anchor block 9 moves after being released from its fixed position. The first tension member 67 then springs back. As the transverse frame 3 continues to move, the support arm 4 and anchor block 9 are no longer under tension. At this time, the second tension member 69 continues to retract, which pulls the first rack 63 to move. The first rack 63 simultaneously drives the moving block 62 to slide in the opposite direction, ultimately pulling the closing bolt 61 back from the semi-circular ring 7, releasing the lock on the lifting component 103. Simultaneously, under the transmission action of the gear 64, the second rack 65 is driven to reset, simultaneously driving the tension block 66 to reset displacement until it contacts the stop block 68.

[0097] During the reset phase, as the transverse frame 3 moves to the initial position, the support arm 4 automatically rotates 180 degrees in the second direction, and components such as the first rack 63, gear 64, second rack 65, and tension block 66 return to their initial positions to prepare for the next closing action.

[0098] It ensures reliable locking of lifting component 103 and achieves safe unlocking under high temperature conditions, making the entire system highly automated and safe.

[0099] In another embodiment of the present invention, please refer to Figure 9-11The system includes a self-locking assembly 8, which comprises a lifting frame 81, an inclined block 82, a first elastic element 83, a base 84, a second elastic element 85, a lower pressure surface 86, and a pressing plate 87. A groove 92 is provided on one side of the anchor block 9. The base 84 is fixedly installed on one side of the frame 1. The lifting frame 81 is slidably connected to one side of the frame 1. The second elastic element 85 applies an upward thrust to the lifting frame 81. The inclined block 82 is slidably disposed on the upper part of one end of the lifting frame 81. The first elastic element 83 applies a thrust to the inclined block 82 in the direction of the anchor block 9, so that the inclined block 82 is embedded in the groove 92. The lower pressure surface 86 is disposed at the other end of the lifting frame 81. The pressing plate 87 is fixedly installed on the transverse frame 3.

[0100] The frame 1 has a clearance opening 11 on one side. In the third stage, the extrusion plate 87 extrudes the lower pressure surface 86, so that the lifting frame 81 moves down and the inclined block 82 enters the clearance opening 11.

[0101] In the first and second stages, the self-locking component 8 is in the locked state, and the anchor block 9 is fixed. Before the transverse frame 3 reaches the third stage, the extrusion plate 87 and the lower pressure surface 86 are not in contact. The upward thrust of the second elastic element 85 dominates the position of the lifting frame 81. Thus, the lifting frame 81 is in a high position under the thrust of the second elastic element 85. At this time, the height of the inclined block 82 is aligned with the groove 92 of the anchor block 9. Under the horizontal thrust of the first elastic element 83, the inclined block 82 is embedded in the groove 92 of the anchor block 9, forming a mechanical lock. The anchor block 9 is restricted to a fixed position on the frame 1 and cannot slide. After the anchor block 9 is fixed, it provides the premise for the transmission part to drive the closing bolt 61 to close in the first stage through the second tension element 69. The transverse frame 3 moves to the third stage position, and the extrusion plate 87 moves synchronously with the transverse frame and the lifting frame 81 moves in sync with the lifting frame 81. The lower pressure surface 86 of the frame 81 contacts and generates compression. The compression disc 87 applies downward pressure to the lower pressure surface 86. This pressure overcomes the upward thrust of the second elastic element 85, forcing the lifting frame 81 to slide downward along the frame 1. The inclined block 82 descends synchronously. At this time, the height of the inclined block 82 is lower than the groove 92 of the anchor block 9, and its horizontal position is aligned with the clearance opening 11 of the frame 1. Thus, the inclined block 82 slides into the clearance opening 11 and no longer embeds into the groove 92 of the anchor block 9. The locking of the anchor block 9 is released, and it can slide freely along the frame 1. In this way, the steel cable 91 will be released. After the steel cable 91 is released, with the cooperation of the first tension element 67 and the second tension element 69, the resetting of the closing bolt 61 is completed. At this time, the semi-circular ring 7 is in the open state, which can be used for the resetting stage to ensure that the semi-circular ring 7 and the lifting element 103 are separated smoothly.

[0102] During the resetting process of the transverse frame 3, the anchor block 9 is simultaneously pushed to reset. The transverse frame 3 moves to its initial position, and the pressing plate 87 moves away from the lower pressing surface 86, thus eliminating the downward pressure. The second elastic element 85 releases its elastic potential energy, pushing the lifting frame 81 to slide upward and reset to its high position. The inclined block 82 rises with the lifting frame 81 and disengages from the avoidance opening 11. The anchor block 9 presses against the inclined surface of the inclined block 82, causing the first elastic element 83 to retract, ensuring the smooth reset of the anchor block 9. Under the thrust of the first elastic element 83, the inclined block 82 re-embeds into the groove 92 of the anchor block 9, and the self-locking assembly returns to the locked state, preparing for the next cycle. The transmission part is not only a power transmission medium but also acts as a "buffer pad." When the transverse frame starts / stops, the elastic element can absorb the instantaneous impact force, such as the inertial force when the transverse frame suddenly decelerates, avoiding the meshing between teeth, the rigid collision between the closing bolt 61 and the semi-circular ring 7, and reducing the risk of tooth wear and component deformation.

[0103] Unlocking is triggered solely by the physical displacement of the transverse frame 3, making it perfectly suited to the high-temperature and dusty environment of the pouring area and avoiding the risk of electronic component failure in harsh environments.

[0104] The system's automatic reset feature allows it to be directly connected to the existing rotating production line of the rotating frame 101. It only requires linking the drive motor with the transfer signal of the rotating frame 101. Once the rotating frame 101 is in position, the motor is triggered to start, which can achieve seamless connection of pouring, cleaning, sending the lifting component 103, and lifting, avoiding the high cost of overhauling and rebuilding the entire line in traditional automation transformation.

[0105] The installation location can be flexibly adjusted according to the existing workshop space, without occupying additional production area, making it especially suitable for upgrading and transforming old workshops.

[0106] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A process for preparing copper alloy materials, characterized in that, Includes the following steps: S1, by weight percentage, consists of 88.0-95.0% electrolytic copper, 2.0-5.0% tin, 1.0-3.0% nickel plate, 0.55-3.5% Ce-Zr master alloy, and 0.3-0.8% graphite powder; S2, add electrolytic copper to a medium-frequency induction furnace, heat to 1050-1100℃ to melt, and start double-helix stirring; S3, when the copper liquid temperature is stable at 1100-1150℃, add nickel plate, tin ingot and Ce-Zr master alloy in sequence, stirring for 5-8 minutes after each addition; S4. Disperse graphite powder in argon gas and introduce it into the medium frequency induction furnace with the argon gas flow. Increase the stirring speed to 40-50 r / min and stir for 10-15 min to make the oxygen content of the melt ≤50ppm. S5. Detect the carbon content by weight percentage. If C > 0.05%, introduce a mixture of oxygen and argon gas at a volume ratio of 1:10 and react for 3-5 minutes until C stabilizes at 0.02-0.05%. S6, heat the melt to 1150-1200℃, and discharge the material after re-inspecting the composition to ensure it meets the standards; S7. Pour the melt into the casting mold and demold when the ingot temperature drops to 300-400℃. S8, after demolding, is sent into the annealing furnace.

2. The copper alloy material preparation process according to claim 1, characterized in that, In S5, when sampling carbon content, multiple sampling points are used to obtain the average value.

3. The copper alloy material preparation process according to claim 1, characterized in that, The Ce-Zr master alloy contains 20% Ce and 10% Zr by weight percentage.

4. The copper alloy material preparation process according to claim 1, characterized in that, In step S7, a mixture of graphite powder and ethanol is applied to the inner wall of the casting mold to form a release agent with a thickness of 5-10 μm.

5. A copper alloy material processing system for implementing the preparation process according to any one of claims 1-4, comprising a rotating frame (101) and a plurality of casting molds (102) disposed on the rotating frame (101), characterized in that, Also includes: Rack (1); A transverse frame (3) is slidably connected to the frame (1), and a support arm (4) is rotatably connected to the transverse frame (3). One end of the support arm (4) is provided with a semi-circular ring (7) for supporting the lifting component (103). Anti-detachment component (6), the anti-detachment component (6) includes a closing bolt (61) slidably connected to the support arm (4) and a transmission part; Among them, the movement of the transverse frame (3) toward the casting mold (102) has a first stage, a second stage, a third stage and a reset stage when the transverse frame (3) moves away from the casting mold (102). In the first stage, the transmission unit drives the closing bolt (61) to move toward the semi-circular ring (7) so as to connect the two ends of the semi-circular ring (7) through the closing bolt (61). In the second stage, the support arm (4) rotates 180 degrees in the first direction, at which time the semicircular ring (7) is above the casting mold (102) so that the lower part of the lifting part (103) is submerged in the melt inside the casting mold (102); In the third stage, the transmission unit drives the closing bolt (61) to retract; During the reset phase, the transverse frame (3) is reset to its initial position, during which the support arm (4) rotates 180 degrees in the second direction.

6. The copper alloy material processing system according to claim 5, characterized in that, It also includes a drive unit (2), which is used to drive the transverse frame (3) to move.

7. A copper alloy material processing system according to claim 5, characterized in that, The transmission unit includes a moving block (62), a first rack (63), a gear (64), a second rack (65), a tension block (66), a first tension member (67), a stop block (68), a second tension member (69), a steel cable (91), and an anchor block (9). The moving block (62) is slidably connected to the support arm (4), and one end of the moving block (62) is connected to the closing bolt (61). The first rack (63) and the moving block (62) are fixedly connected. The second rack (65) is slidably connected to the lower part of the support arm (4). (63) and the second rack (65) are connected by a gear (64). The stop block (68) is fixedly installed in the support arm (4). The stop block (68) and the first rack (63) are connected by a second tension member (69). The tension block (66) is slidably connected in the support arm (4). The tension block (66) and the second rack (65) are connected by a first tension member (67). The anchor block (9) is slidably connected on the frame (1). The anchor block (9) and the tension block (66) are connected by a steel cable (91).

8. A copper alloy material processing system according to claim 7, characterized in that, The assembly includes a self-locking component (8), which includes a lifting frame (81), an inclined block (82), a first elastic element (83), a base (84), a second elastic element (85), a pressing surface (86), and a pressing plate (87). A groove (92) is provided on one side of the anchor block (9). The base (84) is fixedly installed on one side of the frame (1). The lifting frame (81) is slidably connected to one side of the frame (1). The second elastic element (85) applies an upward thrust to the lifting frame (81). The inclined block (82) is slidably disposed on the upper part of one end of the lifting frame (81). The first elastic element (83) applies a thrust to the inclined block (82) in the direction of the anchor block (9) so that the inclined block (82) is embedded in the groove (92). The pressing surface (86) is disposed on the other end of the lifting frame (81). The pressing plate (87) is fixedly installed on the transverse frame (3).

9. A copper alloy material processing system according to claim 8, characterized in that, The frame (1) has a clearance opening (11) on one side. In the third stage, the extrusion plate (87) extrudes the lower pressure surface (86) so that the lifting frame (81) moves down and the inclined block (82) enters the clearance opening (11).

10. A copper alloy material processing system according to claim 5, characterized in that, The support arm (4) has a rotating shaft (41) that is rotatably connected to the transverse frame (3). A trigger plate (42) is provided on the moving stroke of the rotating shaft (41). Matching teeth are provided on the rotating shaft (41) and the trigger plate (42).

Images