Production process of high-performance 8-series alloy rod and 8-series alloy rod thereof

Abstract

The invention relates to the technical field of alloy rods, in particular to a production process of a high-performance 8-series alloy rod and the 8-series alloy rod thereof.The production process comprises the following steps that raw materials including, by weight, 8-12 parts of Fe, 3-5 parts of Cu, 0.3-0.4 part of Li, 0.2-0.3 part of Zn, 0.01-0.02 part of Ce and 65-75 parts of Al are weighed; the raw materials in the first step are sequentially added into a smelting furnace; the 8-series alloy rod is prepared from Fe, Cu, Li, Zn, Ce and other raw materials, an additional functional agent is added for stirring modification, a degassing agent and a particle refining agent are added for refining optimization improvement, alloy liquid casting and rolling improvement processing are matched, and the obtained 8-series alloy rod has the advantages that the mechanical strength, the extension performance, the fatigue resistance and the conductivity are improved in a balanced and coordinated mode; and the product has excellent anti-impact stability effect.

Description

Technical Field

[0001] This invention relates to the field of alloy rod technology, specifically to a manufacturing process for a high-performance 8-series alloy rod and the 8-series alloy rod thereof. Background Technology

[0002] In the field of precision machinery manufacturing, as products develop towards higher precision and miniaturization, new challenges are posed to the comprehensive performance of materials. Aluminum alloys, as a basic metallic material, have become a research hotspot due to the need to improve their performance through alloying. 8-series aluminum alloys emerged in response to this demand. Existing alloy rods, in order to optimize the mechanical strength and elongation properties of products, tend to reduce the product's fatigue resistance and electrical conductivity, resulting in poor performance balance and impact resistance, thus limiting the product's efficiency. Therefore, this invention provides further improvements. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the purpose of this invention is to provide a manufacturing process for high-performance 8-series alloy rods and 8-series alloy rods thereof, so as to solve the problems mentioned in the background art.

[0004] The present invention solves the technical problem by adopting the following technical solution: This invention provides a manufacturing process for high-performance 8-series alloy rods, comprising the following steps: Step 1: Weigh the raw materials according to their weight proportions: Fe 8-12 parts, Cu 3-5 parts, Li 0.3-0.4 parts, Zn 0.2-0.3 parts, Ce 0.01-0.02 parts, and Al 65-75 parts; Step 2: Add the raw materials from Step 1 into the melting furnace in sequence, heat to the melting state, then add 4-7 parts of external functional agent, stir and modify. After the modification is completed, the modified melt is obtained. Step 3: Add 5-8 parts of degassing agent to the modified melt, and degas at a refining temperature of 720℃ for 1-2 minutes. Then add 6-9 parts of granular refining agent, and continue refining at 720℃ for 2-3 minutes. Step four: After refining, let the alloy liquid stand for 45 minutes, and then filter the alloy liquid using a 50-mesh filter plate; pour the filtered alloy liquid into a mold to form a casting, and then perform rolling and improvement processing on the casting to obtain the 8-series alloy rod of the present invention.

[0005] Preferably, the stirring speed of the stirring modification treatment is 150-200 r / min, and the stirring time is 2 h; the degassing agent is C2Cl6 degassing agent; the granular refining agent is prepared by sodium chloride, potassium chloride and calcium fluoride in a weight ratio of 3:2:2.

[0006] Preferably, the method for preparing the added functional agent is as follows: S1: Mix B powder, La powder and RE powder in a weight ratio of 3:1:1, then sinter at a temperature of 310-320℃ for 15-25 minutes. After sintering, a sintered body is obtained. S2: Add 4-7 parts of silicon dioxide, 2-3 parts of titanium isopropoxide and 1-2 parts of silane coupling agent to 5-8 parts of sodium citrate solution with a mass fraction of 8-12%, then add 3-5 parts of modified zirconium oxide agent and stir evenly to obtain a silicic liquid. S3: The sintered body and the siliceous liquid are stirred and modified at a weight ratio of 5:(7-11) with a stirring speed of 350-400 r / min for 1 h. After stirring, the mixture is filtered and dried to obtain the siliceous sintering agent. S4: Mix 4-7 parts of titanium dioxide, 3-5 parts of graphene, 5-8 parts of chitosan aqueous solution and 2-3 parts of sodium lignosulfonate evenly to obtain a functional ball milling agent; The silicicity-modified sintering agent and the functional ball milling agent were mixed and ball milled at a weight ratio of (13-15):5. The ball milling speed was 1000-1500 r / min, and the ball milling was carried out for 2 hours. After the ball milling was completed, the mixture was filtered and dried to obtain the added functional agent.

[0007] Preferably, the chitosan aqueous solution has a mass fraction of 4-6%; the silane coupling agent is silane coupling agent KH550.

[0008] Preferably, the specific modification method of the modified zirconium oxide agent is as follows: Zirconia was irradiated in a proton irradiation chamber for 1 hour at an irradiation power of 350-400W. After irradiation, irradiated zirconia was obtained. The irradiated zirconia was then subjected to ultrasonic modification in a modification solution with a weight of 3-5 times the total weight of zirconia. After ultrasonic treatment, the mixture was filtered and dried to obtain the modified zirconia agent. The modified liquid includes the following raw materials in parts by weight: 3-5 parts β-cyclodextrin, 11-15 parts ethanol aqueous solution, 2-3 parts carbon nanotubes, 1-2 parts strontium powder and 0.5-0.8 parts molybdenum.

[0009] Preferably, the ultrasonic power of the ultrasonic modification treatment is 500-550W, and the ultrasonic treatment lasts for 20-30 minutes; the mass fraction of the ethanol aqueous solution is 75-85%.

[0010] The added functional agent is prepared by blending B powder, La powder, and RE powder and sintering to obtain a sintered body. Simultaneously, a siliceous liquid is prepared by blending silica, titanium isopropoxide, and a silane coupling agent with a modified zirconia agent. The raw materials in the siliceous liquid are blended and synergistically formulated to optimize and improve the sintered body. Titanium oxide, graphene, and chitosan aqueous solution are added to obtain a functional ball milling agent. This functional ball milling agent, combined with the siliceous-modifying sintering agent, improves the product's functionality through the synergistic effect of the raw materials. The modified zirconia agent is prepared by proton irradiation of zirconia followed by ultrasonic optimization of the modified liquid. The modified liquid contains β-cyclodextrin, an ethanol aqueous solution, carbon nanotubes, strontium powder, and molybdenum, which are blended and optimized. The combination of carbon nanotubes with strontium powder and molybdenum, along with the blending of β-cyclodextrin and an ethanol aqueous solution, results in a modified liquid that better improves zirconia. The optimized synergy between the modified zirconia agent and the raw materials in the siliceous liquid further enhances the product's performance coordination and stability within the system.

[0011] Preferably, the specific steps of the improved rolling process are as follows: S11: Mix 3-5 parts of aluminum borate whiskers, 5-8 parts of sodium dodecylbenzenesulfonate solution with a mass fraction of 10%, 1-2 parts of silicon carbide, and 3-5 parts of fly ash evenly to obtain a rolling slurry. The casting is immersed in a sufficient amount of rolling slurry for wetting treatment. The wetting power is 350-400W, the wetting time is 1 hour, the wetting pressure is 10-15MPa, and after wetting, it is naturally dried until the surface moisture content is less than 5%. S12: The S11 impregnated body is subjected to homogenization treatment. After homogenization, it is rolled.

[0012] Preferably, the rolling temperature is controlled at 520-525℃ and the exit temperature is controlled at 230-235℃.

[0013] Preferably, the specific steps of the homogenization treatment are as follows: S121: First, heat-treat at 210-230℃ for 10-15 minutes, then raise the temperature to 350℃ at a rate of 1-3℃ / min and hold for 5 minutes; S122: Then raise the temperature to 435-445℃ at a rate of 4-7℃ / min and hold for 15-25 minutes, and finally cool to room temperature at a rate of 2-4℃ / min.

[0014] The improved rolling process uses aluminum borate whiskers as the matrix, and a rolling slurry is prepared by mixing silicon carbide, fly ash, and sodium dodecylbenzene sulfonate solution. The improved casting is then impregnated with the rolling slurry, followed by homogenization treatment, and finally rolling. Through continuous and uniform heating and cooling, the improved alloy matrix is ​​homogenized, strengthening the microstructure and refining the grain structure, thus optimizing the performance of the product system. The improved casting with the rolling slurry, combined with the homogenization treatment, further enhances the performance coordination and stability of the product's microstructure.

[0015] This invention also provides a manufacturing process for producing high-performance 8-series alloy rods.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The 8-series alloy rod of this invention uses raw materials such as Fe, Cu, Li, Zn, and Ce, and is modified by adding external functional agents and stirring. At the same time, it is refined and optimized by adding degassing agents and granular refining agents. The 8-series alloy rod obtained by combining alloy liquid casting and rolling has a balanced and coordinated improvement in mechanical strength, elongation, fatigue resistance and electrical conductivity, and the product has excellent impact stability. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to specific examples. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] The manufacturing process of a high-performance 8-series alloy rod according to this embodiment includes the following steps: Step 1: Weigh the raw materials according to their weight proportions: Fe 8-12 parts, Cu 3-5 parts, Li 0.3-0.4 parts, Zn 0.2-0.3 parts, Ce 0.01-0.02 parts, and Al 65-75 parts; Step 2: Add the raw materials from Step 1 into the melting furnace in sequence, heat to the melting state, then add 4-7 parts of external functional agent, stir and modify. After the modification is completed, the modified melt is obtained. Step 3: Add 5-8 parts of degassing agent to the modified melt, and degas at a refining temperature of 720℃ for 1-2 minutes. Then add 6-9 parts of granular refining agent, and continue refining at 720℃ for 2-3 minutes. Step four: After refining, let the alloy liquid stand for 45 minutes, and then filter the alloy liquid using a 50-mesh filter plate; pour the filtered alloy liquid into a mold to form a casting, and then perform rolling and improvement processing on the casting to obtain the 8-series alloy rod of the present invention.

[0019] In this embodiment, the stirring speed for the stirring modification treatment is 150-200 r / min, and the stirring time is 2 h; the degassing agent is C2Cl6 degassing agent; the granular refining agent is prepared by sodium chloride, potassium chloride and calcium fluoride in a weight ratio of 3:2:2.

[0020] The preparation method of the added functional agent in this embodiment is as follows: S1: Mix B powder, La powder and RE powder in a weight ratio of 3:1:1, then sinter at a temperature of 310-320℃ for 15-25 minutes. After sintering, a sintered body is obtained. S2: Add 4-7 parts of silicon dioxide, 2-3 parts of titanium isopropoxide and 1-2 parts of silane coupling agent to 5-8 parts of sodium citrate solution with a mass fraction of 8-12%, then add 3-5 parts of modified zirconium oxide agent and stir evenly to obtain a silicic liquid. S3: The sintered body and the siliceous liquid are stirred and modified at a weight ratio of 5:(7-11) with a stirring speed of 350-400 r / min for 1 h. After stirring, the mixture is filtered and dried to obtain the siliceous sintering agent. S4: Mix 4-7 parts of titanium dioxide, 3-5 parts of graphene, 5-8 parts of chitosan aqueous solution and 2-3 parts of sodium lignosulfonate evenly to obtain a functional ball milling agent; The silicicity-modified sintering agent and the functional ball milling agent were mixed and ball milled at a weight ratio of (13-15):5. The ball milling speed was 1000-1500 r / min, and the ball milling was carried out for 2 hours. After the ball milling was completed, the mixture was filtered and dried to obtain the added functional agent.

[0021] In this embodiment, the mass fraction of the chitosan aqueous solution is 4-6%; the silane coupling agent is silane coupling agent KH550.

[0022] The specific modification method of the modified zirconium oxide agent in this embodiment is as follows: Zirconia was irradiated in a proton irradiation chamber for 1 hour at an irradiation power of 350-400W. After irradiation, irradiated zirconia was obtained. The irradiated zirconia was then subjected to ultrasonic modification in a modification solution with a weight of 3-5 times the total weight of zirconia. After ultrasonic treatment, the mixture was filtered and dried to obtain the modified zirconia agent. The modified liquid includes the following raw materials in parts by weight: 3-5 parts β-cyclodextrin, 11-15 parts ethanol aqueous solution, 2-3 parts carbon nanotubes, 1-2 parts strontium powder and 0.5-0.8 parts molybdenum.

[0023] In this embodiment, the ultrasonic power for ultrasonic modification treatment is 500-550W, and the ultrasonic treatment lasts for 20-30 minutes; the mass fraction of the ethanol aqueous solution is 75-85%.

[0024] The specific steps of the improved rolling process in this embodiment are as follows: S11: Mix 3-5 parts of aluminum borate whiskers, 5-8 parts of sodium dodecylbenzenesulfonate solution with a mass fraction of 10%, 1-2 parts of silicon carbide, and 3-5 parts of fly ash evenly to obtain a rolling slurry. The casting is immersed in a sufficient amount of rolling slurry for wetting treatment. The wetting power is 350-400W, the wetting time is 1 hour, the wetting pressure is 10-15MPa, and after wetting, it is naturally dried until the surface moisture content is less than 5%. S12: The S11 impregnated body is subjected to homogenization treatment. After homogenization, it is rolled.

[0025] In this embodiment, the rolling temperature is controlled at 520-525℃, and the exit temperature is controlled at 230-235℃.

[0026] The specific operation steps of the homogenization process in this embodiment are as follows: S121: First, heat-treat at 210-230℃ for 10-15 minutes, then raise the temperature to 350℃ at a rate of 1-3℃ / min and hold for 5 minutes; S122: Then raise the temperature to 435-445℃ at a rate of 4-7℃ / min and hold for 15-25 minutes, and finally cool to room temperature at a rate of 2-4℃ / min.

[0027] This embodiment describes the production process of a high-performance 8-series alloy rod.

[0028] Example 1.

[0029] The manufacturing process of a high-performance 8-series alloy rod according to this embodiment includes the following steps: Step 1: Weigh the raw materials according to their weight proportions: Fe 8 parts, Cu 3 parts, Li 0.3 parts, Zn 0.2 parts, Ce 0.01 parts, and Al 65 parts; Step 2: Add the raw materials from Step 1 into the melting furnace in sequence, heat to the melting state, then add 4 parts of external functional agent, stir and modify. After the modification is completed, the modified melt is obtained. Step 3: Add 5 parts of degassing agent to the modified melt and degas at a refining temperature of 720℃ for 1 minute. Then add 6 parts of granular refining agent and continue refining at 720℃ for 2 minutes. Step four: After refining, let the alloy liquid stand for 45 minutes, and then filter the alloy liquid using a 50-mesh filter plate; pour the filtered alloy liquid into a mold to form a casting, and then perform rolling and improvement processing on the casting to obtain the 8-series alloy rod of the present invention.

[0030] In this embodiment, the stirring speed for the stirring modification treatment is 150 r / min, and the stirring time is 2 h; the degassing agent is C2Cl6 degassing agent; the granular refining agent is prepared by sodium chloride, potassium chloride, and calcium fluoride in a weight ratio of 3:2:2.

[0031] The preparation method of the added functional agent in this embodiment is as follows: S1: Mix B powder, La powder and RE powder in a weight ratio of 3:1:1, then sinter at 310℃ for 15 minutes. After sintering, the sintered body is obtained. S2: Add 4 parts of silicon dioxide, 2 parts of titanium isopropoxide and 1 part of silane coupling agent to 5 parts of 8% sodium citrate solution, then add 3 parts of modified zirconium oxide agent and stir evenly to obtain a silicic liquid. S3: The sintered body and the siliceous liquid were stirred and modified at a weight ratio of 5:7. The stirring speed was 350 r / min and the stirring was carried out for 1 hour. After stirring, the mixture was filtered and dried to obtain the siliceous sintering agent. S4: Mix 4 parts titanium dioxide, 3 parts graphene, 5 parts chitosan aqueous solution and 2 parts sodium lignosulfonate evenly to obtain a functional ball milling agent. The silicicity-modified sintering agent and the functional ball milling agent were mixed and ball milled at a weight ratio of 13:5 for 2 hours at a speed of 1000 r / min. After the ball milling was completed, the mixture was filtered and dried to obtain the added functional agent.

[0032] In this embodiment, the chitosan aqueous solution has a mass fraction of 4%; the silane coupling agent is silane coupling agent KH550.

[0033] The specific modification method of the modified zirconium oxide agent in this embodiment is as follows: Zirconia was irradiated in a proton irradiation chamber for 1 hour at an irradiation power of 350W. After irradiation, irradiated zirconia was obtained. The irradiated zirconia was then subjected to ultrasonic modification in a modification solution with a weight of 3 times the total weight of zirconia. After ultrasonic treatment, the mixture was filtered and dried to obtain the modified zirconia agent. The modified liquid includes the following raw materials in parts by weight: 3 parts β-cyclodextrin, 11 parts ethanol aqueous solution, 2 parts carbon nanotubes, 1 part strontium powder and 0.5 parts molybdenum.

[0034] In this embodiment, the ultrasonic power for ultrasonic modification treatment is 500W, and the ultrasonic treatment lasts for 20 minutes; the mass fraction of the ethanol aqueous solution is 75%.

[0035] The specific steps of the improved rolling process in this embodiment are as follows: S11: Mix 3 parts aluminum borate whiskers, 5 parts sodium dodecylbenzenesulfonate solution with a mass fraction of 10%, 1 part silicon carbide, and 3 parts fly ash evenly to obtain a rolling solution. The casting was immersed in a sufficient amount of rolling slurry for wetting treatment. The wetting power was 350W, the wetting time was 1 hour, and the wetting pressure was 10MPa. After wetting, the casting was allowed to dry naturally until the surface moisture content was less than 5%. S12: The S11 impregnated body is subjected to homogenization treatment. After homogenization, it is rolled.

[0036] In this embodiment, the rolling temperature is controlled at 520°C for the entry into the rolling mill and 230°C for the exit of the rod.

[0037] The specific operation steps of the homogenization process in this embodiment are as follows: S121: First, heat-treat at 210℃ for 10 minutes, then raise the temperature to 350℃ at a rate of 1℃ / min and hold for 5 minutes; S122: Then raise the temperature to 435℃ at a rate of 4℃ / min and hold for 15 minutes, and finally cool to room temperature at a rate of 2℃ / min.

[0038] This embodiment describes the production process of a high-performance 8-series alloy rod.

[0039] Example 2. The manufacturing process of a high-performance 8-series alloy rod according to this embodiment includes the following steps: Step 1: Weigh the raw materials according to their weight proportions: 12 parts Fe, 5 parts Cu, 0.4 parts Li, 0.3 parts Zn, 0.02 parts Ce, and 75 parts Al; Step 2: Add the raw materials from Step 1 into the melting furnace in sequence, heat to the melting state, then add 7 parts of external functional agent, stir and modify. After the modification is completed, the modified melt is obtained. Step 3: Add 8 parts of degassing agent to the modified melt and degas for 2 minutes at a refining temperature of 720℃. Then add 9 parts of granular refining agent and continue refining at 720℃ for 3 minutes. Step four: After refining, let the alloy liquid stand for 45 minutes, and then filter the alloy liquid using a 50-mesh filter plate; pour the filtered alloy liquid into a mold to form a casting, and then perform rolling and improvement processing on the casting to obtain the 8-series alloy rod of the present invention.

[0040] In this embodiment, the stirring speed for the stirring modification treatment is 200 r / min, and the stirring time is 2 h; the degassing agent is C2Cl6; and the granular refining agent is prepared by sodium chloride, potassium chloride, and calcium fluoride in a weight ratio of 3:2:2.

[0041] The preparation method of the added functional agent in this embodiment is as follows: S1: Mix B powder, La powder and RE powder in a weight ratio of 3:1:1, then sinter at 320℃ for 25 minutes. After sintering, the sintered body is obtained. S2: Add 7 parts of silicon dioxide, 3 parts of titanium isopropoxide and 2 parts of silane coupling agent to 8 parts of 12% sodium citrate solution, then add 5 parts of modified zirconium oxide agent and stir evenly to obtain a silicic liquid. S3: The sintered body and the siliceous liquid were stirred and modified at a weight ratio of 5:11. The stirring speed was 400 r / min and the stirring was carried out for 1 hour. After stirring, the mixture was filtered and dried to obtain the siliceous sintering agent. S4: Mix 7 parts titanium dioxide, 5 parts graphene, 8 parts chitosan aqueous solution and 3 parts sodium lignosulfonate evenly to obtain a functional ball milling agent; The silicicity-modified sintering agent and the functional ball milling agent were mixed and ball milled at a weight ratio of 15:5 for 2 hours at a speed of 1500 r / min. After the ball milling was completed, the mixture was filtered and dried to obtain the added functional agent.

[0042] In this embodiment, the chitosan aqueous solution has a mass fraction of 6%; the silane coupling agent is silane coupling agent KH550.

[0043] The specific modification method of the modified zirconium oxide agent in this embodiment is as follows: Zirconia was irradiated in a proton irradiation chamber for 1 hour at an irradiation power of 400W. After irradiation, irradiated zirconia was obtained. The irradiated zirconia was then subjected to ultrasonic modification in a modification solution with a weight of 5 times the total weight of zirconia. After ultrasonic treatment, the mixture was filtered and dried to obtain the modified zirconia agent. The modified liquid includes the following raw materials in parts by weight: 5 parts β-cyclodextrin, 15 parts ethanol aqueous solution, 3 parts carbon nanotubes, 2 parts strontium powder and 0.8 parts molybdenum.

[0044] In this embodiment, the ultrasonic power for ultrasonic modification treatment is 550W, and the ultrasonic treatment lasts for 30 minutes; the mass fraction of the ethanol aqueous solution is 85%.

[0045] The specific steps of the improved rolling process in this embodiment are as follows: S11: Mix 5 parts aluminum borate whiskers, 8 parts sodium dodecylbenzenesulfonate solution with a mass fraction of 10%, 2 parts silicon carbide, and 5 parts fly ash evenly to obtain a rolling solution. The casting was immersed in a sufficient amount of rolling slurry for wetting treatment. The wetting power was 400W, the wetting time was 1 hour, and the wetting pressure was 15MPa. After wetting, it was naturally dried until the surface moisture content was less than 5%. S12: The S11 impregnated body is subjected to homogenization treatment. After homogenization, it is rolled.

[0046] In this embodiment, the rolling temperature is controlled at 525°C for the entry into the rolling mill and 235°C for the exit of the rod.

[0047] The specific operation steps of the homogenization process in this embodiment are as follows: S121: First, heat-treat at 230℃ for 15 minutes, then raise the temperature to 350℃ at a rate of 3℃ / min and hold for 5 minutes; S122: Then raise the temperature to 445℃ at a rate of 7℃ / min and hold for 25 minutes, and finally cool to room temperature at a rate of 4℃ / min.

[0048] This embodiment describes the production process of a high-performance 8-series alloy rod.

[0049] Example 3. The manufacturing process of a high-performance 8-series alloy rod according to this embodiment includes the following steps: Step 1: Weigh the raw materials according to their weight proportions: 10 parts Fe, 4 parts Cu, 0.35 parts Li, 0.25 parts Zn, 0.015 parts Ce, and 70 parts Al; Step 2: Add the raw materials from Step 1 into the melting furnace in sequence, heat to the melting state, then add 5.5 parts of external functional agent, stir and modify. After the modification is completed, the modified melt is obtained. Step 3: Add 6.5 parts of degassing agent to the modified melt and degas for 1.5 minutes at a refining temperature of 720℃. Then add 7.5 parts of granular refining agent and continue refining at 720℃ for another 2 minutes. Step four: After refining, let the alloy liquid stand for 45 minutes, and then filter the alloy liquid using a 50-mesh filter plate; pour the filtered alloy liquid into a mold to form a casting, and then perform rolling and improvement processing on the casting to obtain the 8-series alloy rod of the present invention.

[0050] In this embodiment, the stirring speed for the stirring modification treatment is 175 r / min, and the stirring time is 2 h; the degassing agent is C2Cl6; and the granular refining agent is prepared by sodium chloride, potassium chloride, and calcium fluoride in a weight ratio of 3:2:2.

[0051] The preparation method of the added functional agent in this embodiment is as follows: S1: Mix B powder, La powder and RE powder in a weight ratio of 3:1:1, then sinter at 315℃ for 20 minutes. After sintering, the sintered body is obtained. S2: 5.5 parts of silicon dioxide, 2.5 parts of titanium isopropoxide and 1.5 parts of silane coupling agent are mixed and added to 6.5 parts of 10% sodium citrate solution, and then 4 parts of modified zirconium oxide are added and stirred evenly to obtain a siliceous liquid. S3: The sintered body and the siliceous liquid were stirred and modified at a weight ratio of 5:9. The stirring speed was 375 r / min and the stirring was carried out for 1 hour. After stirring, the mixture was filtered and dried to obtain the siliceous sintering agent. S4: Mix 5.5 parts titanium dioxide, 4 parts graphene, 6.5 parts chitosan aqueous solution and 2.5 parts sodium lignosulfonate evenly to obtain a functional ball milling agent; The silicicity-modified sintering agent and the functional ball milling agent were mixed and ball milled at a weight ratio of 14:5 for 2 hours at a speed of 1250 r / min. After the ball milling was completed, the mixture was filtered and dried to obtain the added functional agent.

[0052] In this embodiment, the chitosan aqueous solution has a mass fraction of 5%; the silane coupling agent is silane coupling agent KH550.

[0053] The specific modification method of the modified zirconium oxide agent in this embodiment is as follows: Zirconia was irradiated in a proton irradiation chamber for 1 hour at an irradiation power of 375W. After irradiation, irradiated zirconia was obtained. The irradiated zirconia was then subjected to ultrasonic modification in a modification solution with a weight of 4 times the total weight of zirconia. After ultrasonic treatment, the mixture was filtered and dried to obtain the modified zirconia agent. The modified liquid contains the following raw materials in parts by weight: 4 parts β-cyclodextrin, 13 parts ethanol aqueous solution, 2.5 parts carbon nanotubes, 1.5 parts strontium powder and 0.65 parts molybdenum.

[0054] In this embodiment, the ultrasonic power for ultrasonic modification treatment is 525W, and the ultrasonic treatment time is 25 minutes; the mass fraction of the ethanol aqueous solution is 80%.

[0055] The specific steps of the improved rolling process in this embodiment are as follows: S11: Mix 4 parts aluminum borate whiskers, 6.5 parts sodium dodecylbenzenesulfonate solution (10% by mass), 1.5 parts silicon carbide, and 4 parts fly ash evenly to obtain a rolling slurry; The casting was immersed in a sufficient amount of rolling slurry for wetting treatment. The wetting power was 375W, the wetting time was 1 hour, and the wetting pressure was 12.5MPa. After wetting, it was naturally dried until the surface moisture content was less than 5%. S12: The S11 impregnated body is subjected to homogenization treatment. After homogenization, it is rolled.

[0056] In this embodiment, the rolling temperature is controlled at 522°C for the entry into the rolling mill and 232°C for the exit of the rod.

[0057] The specific operation steps of the homogenization process in this embodiment are as follows: S121: First, heat-treat at 220℃ for 12.5 min, then heat to 350℃ at a rate of 2℃ / min and hold for 5 min; S122: Then heat to 440℃ at a rate of 5.5℃ / min and hold for 20 min, and finally cool to room temperature at a rate of 3℃ / min.

[0058] This embodiment describes the production process of a high-performance 8-series alloy rod.

[0059] Comparative Example 1. Unlike Example 3, no additional functional agents were added.

[0060] Comparative Example 2. Unlike Example 3, no sintered body was added during the preparation of the added functional agent.

[0061] Comparative Example 3. Unlike Example 3, the preparation of the added functional agent did not involve treatment with a silicone liquid.

[0062] Comparative Example 4. Unlike Example 3, silicon dioxide and titanium isopropoxide were added to the silicic liquid.

[0063] Comparative Example 5. Unlike Example 3, no modified zirconium oxide agent was added during the preparation of the added functional agent.

[0064] Comparative Example 6. Unlike Example 3, no functional ball milling agent was used in the preparation of the added functional agent.

[0065] Comparative Example 7. Unlike Example 3, titanium dioxide and graphene were not added to the functional ball milling agent.

[0066] Comparative Example 8. Unlike Example 3, no rolling fluid was added during the improved rolling process.

[0067] Comparative Example 9. Unlike Example 3, silicon carbide and fly ash were not added to the rolling fluid.

[0068] Comparative Example 10. Unlike Example 3, aluminum borate whiskers were not added to the rolling solution.

[0069] Comparative Example 11 Unlike Example 3, homogenization treatment was not used in the improved rolling process.

[0070] Comparative Example 12 Unlike Example 3, the homogenization process did not use step S121, and the temperature was directly increased to 440°C at a rate of 5.5°C / min.

[0071] The products from Examples 1-3 and Comparative Examples 1-12 were tested for mechanical strength, elongation, fatigue resistance, and electrical conductivity, and their impact stability was also tested. The performance measurement results are as follows. Tensile strength (MPa) Elongation at break (%) Conductivity (%IACS) <![CDATA[The ultimate fatigue strength (MPa) is based on 10 7 cycles]]> Impact toughness (J) Example 1 291 25 63.2 178 778 Example 2 293 28 63.4 182 782 Example 3 295 31 63.8 184 785 Comparative Example 1 202 14 57.3 113 678 Comparative Example 2 224 17 58.9 135 702 Comparative Example 3 238 19 60.1 139 714 Comparative Example 4 259 22 61.7 153 759 Comparative Example 5 246 20 60.5 143 732 Comparative Example 6 248 21 60.8 146 740 Comparative Example 7 255 23 61.8 159 753 Comparative Example 8 229 18 60.4 127 712 Comparative Example 9 238 21 61.7 152 743 Comparative Example 10 235 20 61.0 135 740 Comparative Example 11 247 21 61.2 141 743 Comparative Example 12 259 23 61.9 148 757 From Examples 1-3 and Comparative Examples 1-12, it was found that... The product of Embodiment 3 of the present invention has significant effects on mechanical strength, elongation, fatigue resistance and electrical conductivity, as well as impact stability. The performance of the product can be improved and optimized in a coordinated manner. As can be seen from Comparative Examples 1-12 and Example 3, the performance of the product deteriorates significantly when no external functional agent is added. The product performance also deteriorates when the sintered body is not added during the preparation of the external functional agent, when silicon-based liquid treatment is not used, when silicon dioxide and titanium isopropoxide are added to the silicon-based liquid, when modified zirconium oxide is not added during the preparation of the external functional agent, when functional ball milling agent treatment is not used, or when titanium oxide and graphene are not added to the functional ball milling agent. The product performance is most significantly improved when the external functional agent obtained by combining the silicon-based liquid with the sintered body using the specific method of this invention is used. Meanwhile, the product performance deteriorated significantly when modified zirconium oxide was not added during the preparation of the added functional agent, indicating that the preparation of modified zirconium oxide had a significant impact on the product performance. No rolling slurry was added during the improved rolling process, no silicon carbide or fly ash was added to the rolling slurry, no aluminum borate whiskers were added to the rolling slurry, no homogenization treatment was used during the improved rolling process, and the S121 step was not used during the homogenization treatment. The temperature was directly increased to 440℃ at a rate of 5.5℃ / min, and the performance of the product showed a trend of deterioration to varying degrees. The improved rolling process using the rolling fluid obtained by the specific process of this invention and the specific homogenization treatment results in the most significant performance improvement of the product.

[0072] Given that modified zirconium oxide significantly alters the product's performance, further research is needed: Experimental Example 1. Same as Example 3, except that no modifying liquid treatment was used in the preparation of the modified zirconium oxide agent.

[0073] Experimental Example 2. Same as Example 3, except that β-cyclodextrin was not added to the modified solution.

[0074] Experimental Example 3. Same as Example 3, except that carbon nanotubes were not added to the modified liquid.

[0075] Experimental Example 4. Same as Example 3, except that strontium powder and molybdenum were not added to the modified solution.

[0076] Experimental Example 5. Same as Example 3, except that no irradiated zirconium oxide was added in the preparation of the modified zirconium oxide agent.

[0077] Tensile strength (MPa) Elongation at break (%) Conductivity (%IACS) <![CDATA[The ultimate fatigue strength (MPa) is based on 10 7 cycles]]> Impact toughness (J) Experimental Example 1 258 22 61.9 155 749 Experiment Example 2 285 24 62.9 173 769 Experimental Example 3 267 23 62.5 161 757 Experiment Example 4 273 24 62.7 168 753 Experimental Example 5 254 21 61.1 151 741 As can be seen from Experiments 1-5, the performance of the modified zirconia agent deteriorated significantly when the modified liquid treatment was not used or when irradiated zirconia was not added. Furthermore, the performance of the product also deteriorated when β-cyclodextrin, carbon nanotubes, strontium powder, and molybdenum were not added to the modified liquid. Only by using the specific modified liquid of this invention in combination with irradiated zirconia could the modified zirconia agent achieve the most significant performance improvement. Other methods were not as effective as those of this invention.

[0078] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0079] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A manufacturing process for a high-performance 8-series alloy rod, characterized in that, Includes the following steps: Step 1: Weigh the raw materials according to their weight proportions: Fe 8-12 parts, Cu 3-5 parts, Li 0.3-0.4 parts, Zn 0.2-0.3 parts, Ce 0.01-0.02 parts, and Al 65-75 parts; Step 2: Add the raw materials from Step 1 into the melting furnace in sequence, heat to the melting state, then add 4-7 parts of external functional agent, stir and modify. After the modification is completed, the modified melt is obtained. Step 3: Add 5-8 parts of degassing agent to the modified melt, and degas at a refining temperature of 720℃ for 1-2 minutes. Then add 6-9 parts of granular refining agent, and continue refining at 720℃ for 2-3 minutes. Step four: After refining, let the alloy liquid stand for 45 minutes, and then filter the alloy liquid using a 50-mesh filter plate; pour the filtered alloy liquid into a mold to form a casting, and then perform rolling and improvement processing on the casting to obtain the 8-series alloy rod of the present invention.

2. The manufacturing process for a high-performance 8-series alloy rod according to claim 1, characterized in that, The stirring speed for the stirring modification treatment is 150-200 r / min, and the stirring time is 2 h; the degassing agent is C2Cl6 degassing agent; the granular refining agent is prepared by sodium chloride, potassium chloride and calcium fluoride in a weight ratio of 3:2:

2.

3. The manufacturing process for a high-performance 8-series alloy rod according to claim 1, characterized in that, The preparation method of the added functional agent is as follows: S1: Mix B powder, La powder and RE powder in a weight ratio of 3:1:1, then sinter at a temperature of 310-320℃ for 15-25 minutes. After sintering, a sintered body is obtained. S2: Add 4-7 parts of silicon dioxide, 2-3 parts of titanium isopropoxide and 1-2 parts of silane coupling agent to 5-8 parts of sodium citrate solution with a mass fraction of 8-12%, then add 3-5 parts of modified zirconium oxide agent and stir evenly to obtain a silicic liquid. S3: The sintered body and the siliceous liquid are stirred and modified at a weight ratio of 5:(7-11) with a stirring speed of 350-400 r / min for 1 h. After stirring, the mixture is filtered and dried to obtain the siliceous sintering agent. S4: Mix 4-7 parts of titanium dioxide, 3-5 parts of graphene, 5-8 parts of chitosan aqueous solution and 2-3 parts of sodium lignosulfonate evenly to obtain a functional ball milling agent; The silicicity-modified sintering agent and the functional ball milling agent were mixed and ball milled at a weight ratio of (13-15):

5. The ball milling speed was 1000-1500 r / min, and the ball milling was carried out for 2 hours. After the ball milling was completed, the mixture was filtered and dried to obtain the added functional agent.

4. The manufacturing process for a high-performance 8-series alloy rod according to claim 3, characterized in that, The chitosan aqueous solution has a mass fraction of 4-6%; the silane coupling agent is silane coupling agent KH550.

5. The manufacturing process for a high-performance 8-series alloy rod according to claim 3, characterized in that, The specific modification method of the modified zirconium oxide agent is as follows: Zirconia was irradiated in a proton irradiation chamber for 1 hour at an irradiation power of 350-400W. After irradiation, irradiated zirconia was obtained. The irradiated zirconia was then subjected to ultrasonic modification in a modification solution with a weight of 3-5 times the total weight of zirconia. After ultrasonic treatment, the mixture was filtered and dried to obtain the modified zirconia agent. The modified liquid includes the following raw materials in parts by weight: 3-5 parts β-cyclodextrin, 11-15 parts ethanol aqueous solution, 2-3 parts carbon nanotubes, 1-2 parts strontium powder and 0.5-0.8 parts molybdenum.

6. The manufacturing process for a high-performance 8-series alloy rod according to claim 5, characterized in that, The ultrasonic power for the ultrasonic modification treatment is 500-550W, and the ultrasonic treatment time is 20-30 minutes; the mass fraction of the ethanol aqueous solution is 75-85%.

7. The manufacturing process for a high-performance 8-series alloy rod according to claim 1, characterized in that, The specific steps of the improved rolling process are as follows: S11: Mix 3-5 parts of aluminum borate whiskers, 5-8 parts of sodium dodecylbenzenesulfonate solution with a mass fraction of 10%, 1-2 parts of silicon carbide, and 3-5 parts of fly ash evenly to obtain a rolling slurry. The casting is immersed in a sufficient amount of rolling slurry for wetting treatment. The wetting power is 350-400W, the wetting time is 1 hour, the wetting pressure is 10-15MPa, and after wetting, it is naturally dried until the surface moisture content is less than 5%. S12: The S11 impregnated body is subjected to homogenization treatment. After homogenization, it is rolled.

8. The manufacturing process for a high-performance 8-series alloy rod according to claim 7, characterized in that, The rolling process involves controlling the infeed temperature at 520-525℃ and the exit temperature at 230-235℃.

9. The manufacturing process for a high-performance 8-series alloy rod according to claim 7, characterized in that, The specific steps of the homogenization process are as follows: S121: First, heat-treat at 210-230℃ for 10-15 minutes, then raise the temperature to 350℃ at a rate of 1-3℃ / min and hold for 5 minutes; S122: Then raise the temperature to 435-445℃ at a rate of 4-7℃ / min and hold for 15-25 minutes, and finally cool to room temperature at a rate of 2-4℃ / min.

10. An 8-series alloy rod produced by the manufacturing process of a high-performance 8-series alloy rod as described in any one of claims 1-9.