CN118406914A - Aluminum-strontium alloy coiled material production process - Google Patents
Aluminum-strontium alloy coiled material production process Download PDFInfo
- Publication number
- CN118406914A CN118406914A CN202410866187.7A CN202410866187A CN118406914A CN 118406914 A CN118406914 A CN 118406914A CN 202410866187 A CN202410866187 A CN 202410866187A CN 118406914 A CN118406914 A CN 118406914A
- Authority
- CN
- China
- Prior art keywords
- aluminum
- strontium
- degassing
- coiled material
- refining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 61
- YNDGDLJDSBUSEI-UHFFFAOYSA-N aluminum strontium Chemical compound [Al].[Sr] YNDGDLJDSBUSEI-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 229910001278 Sr alloy Inorganic materials 0.000 title claims abstract description 48
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000007670 refining Methods 0.000 claims abstract description 55
- 238000007872 degassing Methods 0.000 claims abstract description 49
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 35
- 239000000956 alloy Substances 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 26
- 239000013538 functional additive Substances 0.000 claims abstract description 23
- UUCCCPNEFXQJEL-UHFFFAOYSA-L strontium dihydroxide Chemical class [OH-].[OH-].[Sr+2] UUCCCPNEFXQJEL-UHFFFAOYSA-L 0.000 claims abstract description 17
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910001866 strontium hydroxide Inorganic materials 0.000 claims abstract description 14
- 238000009210 therapy by ultrasound Methods 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims abstract description 9
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 32
- 238000003756 stirring Methods 0.000 claims description 32
- 239000000243 solution Substances 0.000 claims description 31
- 229910052782 aluminium Inorganic materials 0.000 claims description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 20
- 229910052786 argon Inorganic materials 0.000 claims description 16
- 238000002360 preparation method Methods 0.000 claims description 16
- 238000005266 casting Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000003723 Smelting Methods 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 8
- 230000000996 additive effect Effects 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 8
- 229910002804 graphite Inorganic materials 0.000 claims description 8
- 239000010439 graphite Substances 0.000 claims description 8
- 239000005997 Calcium carbide Substances 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 7
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 239000003607 modifier Substances 0.000 claims description 6
- 238000007792 addition Methods 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 238000010791 quenching Methods 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 238000009388 chemical precipitation Methods 0.000 claims description 2
- 239000002893 slag Substances 0.000 claims description 2
- 238000000643 oven drying Methods 0.000 claims 1
- 229910052712 strontium Inorganic materials 0.000 abstract description 15
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 abstract description 15
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 14
- 239000012535 impurity Substances 0.000 abstract description 9
- 239000000292 calcium oxide Substances 0.000 abstract description 8
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 6
- 239000010703 silicon Substances 0.000 abstract description 6
- IATRAKWUXMZMIY-UHFFFAOYSA-N strontium oxide Chemical compound [O-2].[Sr+2] IATRAKWUXMZMIY-UHFFFAOYSA-N 0.000 abstract description 6
- 150000001875 compounds Chemical class 0.000 abstract description 5
- 239000000155 melt Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 22
- 238000001125 extrusion Methods 0.000 description 12
- 238000000354 decomposition reaction Methods 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 238000012986 modification Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 229910000676 Si alloy Inorganic materials 0.000 description 5
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 5
- 238000002844 melting Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000009864 tensile test Methods 0.000 description 3
- 229910021380 Manganese Chloride Inorganic materials 0.000 description 2
- GLFNIEUTAYBVOC-UHFFFAOYSA-L Manganese chloride Chemical compound Cl[Mn]Cl GLFNIEUTAYBVOC-UHFFFAOYSA-L 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000011565 manganese chloride Substances 0.000 description 2
- 229940099607 manganese chloride Drugs 0.000 description 2
- 235000002867 manganese chloride Nutrition 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical class [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000007771 core particle Substances 0.000 description 1
- 239000011258 core-shell material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000001132 ultrasonic dispersion Methods 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The application discloses a production process of an aluminum-strontium alloy coiled material, which belongs to the technical field of aluminum-strontium alloy production and comprises the following steps: s1, preparing materials; step S2, primary refining and degassing: s3, secondary refining and degassing; s4, preparing an as-cast alloy square billet; s5, forming coiled materials; according to the application, not only is the functional additive added, but also the melt is subjected to ultrasonic treatment in the secondary refining process, the outer layer of the functional additive is nano calcium carbonate, the inner core is a modified substance of KH-560 modified strontium hydroxide, the strontium hydroxide has good thermal stability, the strontium hydroxide is refined and decomposed into strontium oxide, and is removed by deoxidizer treatment, meanwhile, the outer layer of nano calcium carbonate is present, so that on one hand, the loss of strontium element is reduced, on the other hand, the compound formed by the calcium oxide generated by refining and decomposing the deoxidizer and silicon impurities in the alloy is removed in the secondary refining and degassing process, and the yield and mechanical property of the product are further improved by cooperating with the ultrasonic treatment process.
Description
Technical Field
The invention relates to the technical field of aluminum-strontium alloy production, in particular to a production process of an aluminum-strontium alloy coiled material.
Background
The aluminum-silicon alloy has excellent casting, corrosion resistance and heat resistance, and is widely applied in the automobile and aerospace industries. However, the aluminum-silicon alloy is easy to form coarse flaky eutectic silicon in the casting process, and the mechanical property and the processing property of the aluminum-silicon alloy are seriously influenced, so that the aluminum-silicon alloy is generally subjected to modification treatment in the production process. The aluminum-strontium alloy coiled material has the advantages of long effective modification time, no excessive modification, no environmental pollution and the like, and is widely used as an modifier in the large-scale production process of aluminum-silicon alloy.
Because the strontium element in the aluminum-strontium alloy is an easily oxidized active metal element, a large amount of strontium element is oxidized and burnt out in the stirring process, and generated impurities enter aluminum liquid, so that the toughness of the prepared aluminum-strontium coiled material is lower, the production cost of the coiled material is increased, and a large amount of strontium element is oxidized and burnt out in the stirring process, so that the consumption is increased, and great waste is caused.
Therefore, in order to ensure the normal operation of the continuous production process, improve the product quality and the product yield, reduce the loss and reduce the production cost, the development of a new aluminum-strontium alloy coiled material production process is a technical problem which needs to be solved at present.
Disclosure of Invention
The invention aims to provide a process for producing an aluminum-strontium alloy coiled material, which aims to solve the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The aluminum-strontium alloy coiled material production process comprises the following steps:
step S1, preparing materials: comprises 18 to 20 weight percent of functional additive, 0.1 to 0.16 weight percent of Si, 0.22 to 0.26 weight percent of Fe and the balance of Al;
step S2, primary refining and degassing: smelting aluminum materials into aluminum liquid in a smelting furnace, heating to 720-800 ℃, adding a refining agent, refining and degassing to obtain refined liquid;
Step S3, secondary refining and degassing: maintaining the temperature unchanged, adding the functional additive into the refined solution, heating to 1120-1160 ℃ while stirring, adding the deoxidizer and the refining agent, performing secondary refining and degassing, continuing stirring for 20-40min to obtain a molten solution, and performing ultrasonic treatment on the molten solution for 30-60s to obtain an alloy melt;
S4, preparing an as-cast alloy square billet: continuously heating to 1200-1300 ℃, and continuously casting and molding the alloy melt by a four-wheel casting machine to obtain an as-cast alloy square billet;
S5, forming a coiled material: feeding the as-cast alloy square billet prepared in the step S4 into a continuous extruder, maintaining the temperature unchanged, forming after a die, carrying out online water quenching by a cooling water tank, repeating the above operation for three times to obtain a wire rod, rolling the wire rod by a winding machine, and detecting and packaging to obtain the aluminum-strontium alloy coiled material.
Further, in the step S2 and the step S3, a graphite rotor rotary blowing method is adopted in the refining and degassing process, the carrier used is argon with the purity of 99.999%, the argon pressure is 0.1-0.3MPa, and the rotating rotor speed is 800-1400rpm.
In step S2, refining and degassing time is 20-30min, and surface scum is cleaned after refining and degassing are finished.
Further, in step S3, the functionalized additive is added by using a feeder, the feeding time is set to be 10-20min, and the electromagnetic stirring voltage is set to be 200-400V in the feeding process.
Further, in step S3, the temperature is raised to be kept at 800 ℃ for 15min, the temperature is raised to 900 ℃ at the speed of 10 ℃/min and kept at 10min, and then the temperature is raised to 1120-1160 ℃ at the speed of 8 ℃/min and kept at 10min.
In step S3, the deoxidizer is nano calcium carbide.
Further, in the step S3, the addition amount of the deoxidizer is 0.04-0.08% of the mass of the aluminum liquid.
In step S3, refining and degassing time is 25-35min, and surface scum is cleaned after refining and degassing are finished.
Further, in step S3, the ultrasonic frequency during ultrasonic treatment is 30-40kHz, and the ultrasonic power is 400-600w.
Further, in step S5, the extrusion temperature is 370-430 ℃, the extrusion speed is 1-4m/min, and the extrusion ratio is 40-120.
Further, in step S5, the diameter of the wire rod is 12mm.
Further, the preparation method of the functional additive comprises the following steps: adding the modified substance into saturated calcium oxide solution at 35-45 ℃, stirring uniformly at 600-1000rpm, maintaining the stirring speed unchanged, introducing pure carbon dioxide gas at the flow rate of 25-45mL/min until the pH value is neutral, stopping the reaction, centrifuging, and drying to obtain the functional additive, wherein the dosage ratio of the modified substance to the saturated calcium oxide solution is 2-4g:15-25mL, and in the reaction process, obtaining the functionalized additive of coating nano calcium carbonate on the surface of the modified substance by a chemical precipitation method.
Further, the preparation method of the modified substance comprises the following steps: adding 1.5M strontium hydroxide solution into a mixed solution of deionized water and absolute ethyl alcohol, uniformly dispersing by ultrasonic, adding KH-560, continuously mixing by ultrasonic for 0.4-0.6h, heating to 35-45 ℃, stirring for 2-4h, and drying at 55 ℃ to obtain a modified product, wherein the dosage ratio of the 1.5M strontium hydroxide solution, the mixed solution and KH-560 is 25mL:43-47mL:0.6-1mL, in the mixed solution, the dosage ratio of deionized water to absolute ethyl alcohol is 15mL:28-32mL.
Compared with the prior art, the application has the following beneficial effects: in order to avoid the waste of strontium element and impurity pollution generated during the preparation of the aluminum strontium alloy, the application adds the functional additive, the functional additive is composed of a core-shell structure, the outer layer is nano calcium carbonate, the inner layer is a modified substance obtained by KH-560 modified strontium hydroxide, the KH-560 modified strontium hydroxide has good dispersibility, meanwhile, the strontium hydroxide has good thermal stability, the loss of strontium element and the impurity generated after the loss are not easy to generate during the preparation of the alloy, meanwhile, the strontium hydroxide can be decomposed into strontium oxide after the primary refining and degassing and the secondary refining and degassing, the oxygen content in the alloy is reduced after the deoxidizing agent treatment, the yield and the mechanical property of the product are improved, meanwhile, the existence of the nano calcium carbonate on the outer layer also has good stability, on one hand, the loss of strontium element is further reduced, on the other hand, the calcium oxide generated through the primary refining and degassing decomposition and the calcium oxide generated through the decomposition can form high-melting point compound with silicon element impurity in the alloy, the secondary refining and degassing is removed during the secondary refining and degassing, the yield and mechanical property of the product is further improved during the mechanical dispersion is further improved, the yield and mechanical property of the product is further improved during the mechanical dispersion is further processed.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The embodiment provides a preparation method of a modified substance, which comprises the following steps:
25mL of 1.5M strontium hydroxide solution is added into a mixed solution of 15mL of deionized water and 45mL of absolute ethyl alcohol, ultrasonic dispersion is uniform, then 0.8mL of KH-560 is added, ultrasonic mixing is continued for 30min, the temperature is raised to 40 ℃ and stirring is carried out for 3h, and then the mixture is dried at 55 ℃ to obtain a modified product.
Example 2
The embodiment provides a preparation method of a functional additive, which comprises the following steps:
Adding 3g of the modified substance prepared in the embodiment 1 into 20mL of saturated calcium oxide solution at 40 ℃, stirring uniformly at the rotating speed of 800rpm, maintaining the rotating speed unchanged, introducing pure carbon dioxide gas at the flow speed of 35mL/min until the pH value is neutral, stopping the reaction, centrifuging and drying to obtain the functional additive.
Example 3
The embodiment provides a production process of an aluminum-strontium alloy coiled material, which comprises the following steps:
Step S1, preparing materials: comprises 18wt% of the functional additive prepared in the example 2, 0.1wt% of Si, 0.22wt% of Fe and the balance of Al by mass content;
Step S2, primary refining and degassing: smelting aluminum materials into aluminum liquid in a smelting furnace, heating to 720 ℃, adopting a graphite rotor rotary blowing method to take 99.999% of argon as a carrier, fully stirring the aluminum liquid, setting the rotating speed to 800rpm, introducing argon under the pressure of 0.1MPa, refining and degassing for 20min, and cleaning surface scum after the refining and degassing are finished to obtain refined liquid;
Step S3, secondary refining and degassing: maintaining the temperature unchanged, adding a functional additive into a refined solution, keeping the temperature at 800 ℃ for 15min while stirring, heating to 900 ℃ at the speed of 10 ℃/min and keeping the temperature for 10min, heating to 1120 ℃ at the speed of 8 ℃/min and keeping the temperature for 10min, adding nano calcium carbide with the mass of 0.04% of the aluminum solution, adopting a graphite rotor rotary blowing method, taking 99.999% of argon as a carrier, fully stirring the aluminum solution, setting the rotating speed at 800rpm, introducing the argon under the pressure of 0.1MPa, refining and degassing for 25min, cleaning surface scum after the refining and degassing are finished, continuing stirring for 20min to obtain a molten solution, and carrying out ultrasonic treatment on the molten solution for 30s under the ultrasonic frequency of 35kHz to obtain an alloy melt;
S4, preparing an as-cast alloy square billet: continuously heating to 1200 ℃, and continuously casting and forming the alloy melt by a four-wheel casting machine to obtain an as-cast alloy square billet;
S5, forming a coiled material: feeding the as-cast alloy square billet prepared in the step S4 into a continuous extruder, controlling the extrusion temperature to 370 ℃, the extrusion speed to 1m/min, extruding at the extrusion ratio of 40, maintaining the temperature unchanged, forming after passing through a die, carrying out online water quenching by a cooling water tank, repeating the above operation for three times to obtain a wire rod, rolling the wire rod by a winding machine, detecting and packaging to obtain the aluminum-strontium alloy coiled material, wherein in the step S3, a functionalized additive is added by using a feeder, the feeding time is set to 10min, and the electromagnetic stirring voltage in the feeding process is set to 200V.
Example 4
The embodiment provides a production process of an aluminum-strontium alloy coiled material, which comprises the following steps:
Step S1, preparing materials: comprises 19wt% of the functional additive prepared in the example 2, 0.13wt% of Si, 0.24wt% of Fe and the balance of Al according to mass content;
Step S2, primary refining and degassing: smelting aluminum materials into aluminum liquid in a smelting furnace, heating to 760 ℃, adopting a graphite rotor rotary blowing method to take 99.999% of argon as a carrier, fully stirring the aluminum liquid, setting the rotating speed to 1100rpm, introducing argon under the pressure of 0.2MPa, refining and degassing for 25min, and cleaning surface scum after the refining and degassing are finished to obtain refined liquid;
Step S3, secondary refining and degassing: maintaining the temperature unchanged, adding a functional additive into a refined solution, keeping the temperature at 800 ℃ for 15min while stirring, heating to 900 ℃ at the speed of 10 ℃/min and keeping the temperature for 10min, heating to 1140 ℃ at the speed of 8 ℃/min and keeping the temperature for 10min, adding nano calcium carbide with the mass of 0.06% of the aluminum solution, adopting a graphite rotor rotary blowing method, taking 99.999% of argon as a carrier, fully stirring the aluminum solution, setting the rotating speed at 1100rpm, introducing argon gas under the pressure of 0.2MPa, refining and degassing for 30min, cleaning surface scum after the refining and degassing are finished to obtain the refined solution, continuing stirring for 30min, and carrying out ultrasonic treatment on the molten solution for 45s under the ultrasonic frequency of 35kHz and the ultrasonic power of 500w to obtain an alloy melt;
S4, preparing an as-cast alloy square billet: continuously heating to 1250 ℃, and continuously casting and molding the alloy melt by a four-wheel casting machine to obtain an as-cast alloy square billet;
S5, forming a coiled material: feeding the as-cast alloy square billet prepared in the step S4 into a continuous extruder, controlling the extrusion temperature to 400 ℃, the extrusion speed to 2.5m/min, the extrusion ratio to 80, maintaining the temperature unchanged, forming after passing through a die, carrying out online water quenching by a cooling water tank, repeating the above operation for three times to obtain a wire rod, rolling the wire rod by a winding machine, detecting and packaging to obtain the aluminum-strontium alloy coiled material, wherein in the step S3, a functionalized additive is added by using a feeder, the feeding time is set to 15min, and the electromagnetic stirring voltage in the feeding process is set to 300V.
Example 5
The embodiment provides a production process of an aluminum-strontium alloy coiled material, which comprises the following steps:
step S1, preparing materials: comprises 20wt% of functional additive, 0.16wt% of Si, 0.26wt% of Fe and the balance of Al by mass content;
Step S2, primary refining and degassing: smelting aluminum materials into aluminum liquid in a smelting furnace, heating to 800 ℃, adopting a graphite rotor rotary blowing method to take 99.999% of argon as a carrier, fully stirring the aluminum liquid, setting the rotating speed at 1500rpm, introducing argon under the pressure of 0.3MPa, refining and degassing for 30min, and cleaning surface scum after the refining and degassing are finished to obtain refined liquid;
Step S3, secondary refining and degassing: maintaining the temperature unchanged, adding a functional additive into an aluminum liquid, keeping the temperature at 800 ℃ for 15min while stirring, heating to 900 ℃ at the speed of 10 ℃/min and keeping the temperature for 10min, heating to 1160 ℃ at the speed of 8 ℃/min and keeping the temperature for 10min, adding nano calcium carbide with the mass of 0.08% of the aluminum liquid, adopting a graphite rotor rotary blowing method, taking 99.999% of argon as a carrier, fully stirring the aluminum liquid, setting the rotating speed at 1400rpm, introducing argon under the pressure of 0.3MPa, refining and degassing for 35min, cleaning surface scum after the refining and degassing are finished to obtain a refined liquid, continuously stirring and melting the refined liquid into an aluminum alloy liquid, and carrying out ultrasonic treatment on the molten liquid for 60s under the ultrasonic frequency of 40kHz to obtain an alloy melt;
S4, preparing an as-cast alloy square billet: continuously heating to 1300 ℃, and continuously casting and forming the alloy melt by a four-wheel casting machine to obtain an as-cast alloy square billet;
S5, forming a coiled material: feeding the as-cast alloy square billet prepared in the step S4 into a continuous extruder, controlling the extrusion temperature to 430 ℃, the extrusion speed to 4m/min, the extrusion ratio to 120, maintaining the temperature unchanged, forming after passing through a die, carrying out online water quenching by a cooling water tank, repeating the above operation for three times to obtain a wire rod, rolling the wire rod by a winding machine, detecting and packaging to obtain the aluminum-strontium alloy coiled material, wherein in the step S3, a functionalized additive is added by using a feeder, the feeding time is set to 20min, and the electromagnetic stirring voltage in the feeding process is set to 400V.
Comparative example 1
KH-560 in example 1 was removed, the rest of the raw materials and preparation process remained unchanged, the prepared material was replaced with the modified material in example 2, the rest of the raw materials and preparation process remained unchanged, and the prepared material was replaced with the functionalized additive in example 4, the rest of the raw materials and preparation process remained unchanged.
Comparative example 2
The saturated calcium oxide solution in example 2 was replaced with an equal volume of saturated aqueous ammonia, the remaining raw materials and the preparation process were kept unchanged, and the prepared material was replaced with the functionalized additive in example 4, the remaining raw materials and the preparation process were kept unchanged.
Comparative example 3
The functional additive of example 4 was replaced with equal mass of metallic strontium, the rest of the raw materials and the preparation process remained unchanged.
Comparative example 4
The nano calcium carbide added in the step S3 in the example 4 is removed, and the rest raw materials and the preparation process are kept unchanged.
Comparative example 5
The ultrasonic treatment process of step S3 in example 4 was removed, and the remaining raw materials and the preparation process were kept unchanged.
Application example
Melting ZL101 aluminum alloy (Al-7 Si-0.3Mg-0.15 Ti) in a crucible, adding manganese chloride, refining and degassing, preserving heat for 15min, respectively adding the aluminum-strontium alloy coiled materials prepared in the examples 3-5 and the comparative examples 1-5 after slag skimming, stirring and preserving heat for 60min, sampling and pouring into ingots, and sequentially named application examples 1-8 as the obtained samples, wherein the mass ratio of the ZL101 aluminum alloy, the manganese chloride and the aluminum-strontium alloy coiled materials is 100:0.12:0.04.
The performance of the prepared application example is detected, and the specific detection method and the test result are as follows:
Performance detection
1. Mechanical property detection
Tensile test was carried out on a CMT-7304 type electronic universal material tensile tester by taking tensile test from the longitudinal (L direction), transverse (LT direction) and 45 DEG directions of the aluminum-strontium alloy coiled materials prepared in examples 3-5 and comparative examples 1-5, respectively, room temperature tensile property test was carried out by referring to GB/T228.1-2021 section 1 Metal materials tensile test: room temperature test method, tensile strength, yield strength and elongation of each test material were measured respectively, the tensile speed was 2mm/min, the measured value in each direction was an average value of 3 samples in the same direction, and specific test results of the above-mentioned tests are shown in Table 1 below:
TABLE 1
| Project | Example 3 | Example 4 | Example 5 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 |
| Tensile strength/MPa | 86.27 | 88.41 | 87.35 | 87.01 | 86.03 | 85.47 | 83.32 | 82.53 |
| Yield strength/MPa | 71.74 | 74.27 | 73.45 | 72.36 | 67.33 | 66.23 | 65.54 | 65.37 |
| Elongation/% | 24.86 | 26.36 | 25.15 | 24.77 | 24.24 | 23.74 | 24.32 | 23.46 |
As can be seen from Table 1, the aluminum-strontium alloy coiled materials prepared in examples 2 to 5 have more excellent properties than those of comparative examples 1 to 5, and the aluminum-strontium alloy in example 3 has more excellent mechanical properties as compared with comparative examples 1 to 5, probably because strontium hydroxide can form hydrogen bonding with KH-560 to improve dispersibility of the modifier and thus mechanical properties of the aluminum-strontium alloy coiled materials, and the aluminum-strontium alloy in example 3 and comparative example 2 have more excellent mechanical properties as compared with comparative examples 3, probably because calcium carbonate can improve loss of strontium element, and calcium oxide generated by decomposition and deoxidizer can form a high-melting compound with silicon element impurities in the alloy, and can be removed during secondary refining and degassing to improve mechanical properties of the aluminum-strontium alloy, comparative example 3 and comparative example 3 show that the aluminum-strontium alloy of example 3 has more excellent mechanical properties, probably because the metallic strontium is easily lost in a great amount during the addition process and generates impurities, and the mechanical properties of the aluminum-strontium alloy are reduced, while comparative example 3 and comparative example 4 show that the aluminum-strontium alloy of example 3 has more excellent mechanical properties, probably because the addition of calcium carbide not only reduces the loss of strontium element, but also the calcium oxide generated by the decomposition of the refining degassing decomposition and the calcium oxide generated by the decomposition of the deoxidizer can form high-melting-point compounds with the silicon impurities in the alloy, the mechanical properties of the aluminum-strontium alloy are improved, and comparative example 3 and comparative example 5 show that the aluminum 4 Sr size in the aluminum-strontium alloy is finer and more uniform when the alloy melt is treated by ultrasonic waves, the mechanical property of the aluminum-strontium alloy is improved.
2. Detection of metamorphic actual yield
The aluminum-strontium alloy coiled materials in application examples 1 to 8 were each tested for strontium deterioration actual yield by an ICP plasma spectrometer, and specific test data are shown in Table 2 below:
TABLE 2
| Project | Application example 1 | Application example 2 | Application example 3 | Application example 4 | Application example 5 | Application example 6 | Application example 7 | Application example 8 |
| Strontium deterioration yield/% (60 min) | 95.7 | 97.2 | 96.5 | 91.3 | 83.1 | 77.3 | 76.6 | 81.4 |
As is clear from Table 2, compared with application examples 4-8, the aluminum-strontium alloy in application examples 1-3 still has higher strontium modification actual yield after modification treatment for 60min, mainly because the aluminum-strontium alloy coiled material in application examples 1-3 contains the functional additive, the inner core strontium hydroxide in the material has good thermal stability, the inner core strontium hydroxide can be decomposed into strontium oxide after primary refining degassing and secondary refining degassing, and then the strontium hydroxide is treated by the deoxidizer, so that the oxygen content in the prepared alloy is reduced, meanwhile, the existence of the outer nano calcium carbonate has good stability, the loss of strontium element is further reduced, on the other hand, calcium oxide generated by primary refining decomposition and calcium oxide generated by the deoxidizer decomposition can form a high-melting-point compound with silicon element impurities in the alloy, and in addition, the molten liquid is subjected to ultrasonic treatment in the secondary refining process, so that each tissue of the aluminum-strontium alloy is more refined, and heterogeneous core particles Al 4 Sr have excellent modification effects, and further absorption rate is improved.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative and explanatory of the invention, as various modifications and additions may be made to the particular embodiments described, or in a similar manner, by those skilled in the art, without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.
Claims (10)
1. The aluminum-strontium alloy coiled material production process comprises the following steps:
step S1, preparing materials: comprises 18 to 20 weight percent of functional additive, 0.1 to 0.16 weight percent of Si, 0.22 to 0.26 weight percent of Fe and the balance of Al;
step S2, primary refining and degassing: smelting aluminum materials into aluminum liquid in a smelting furnace, heating to 720-800 ℃, adding a refining agent, refining and degassing to obtain refined liquid;
Step S3, secondary refining and degassing: maintaining the temperature unchanged, adding the functional additive into the refined solution, heating to 1120-1160 ℃ while stirring, adding the deoxidizer and the refining agent, performing secondary refining and degassing, continuing stirring for 20-40min to obtain a molten solution, and performing ultrasonic treatment on the molten solution for 30-60s to obtain an alloy melt;
S4, preparing an as-cast alloy square billet: continuously heating to 1200-1300 ℃, and continuously casting and molding the alloy melt by a four-wheel casting machine to obtain an as-cast alloy square billet;
S5, forming a coiled material: feeding the as-cast alloy square billet prepared in the step S4 into a continuous extruder, molding by a die, performing online water quenching by a cooling water tank, repeating the above operation for three times to obtain a wire rod, rolling the wire rod by a winding machine, detecting and packaging to obtain an aluminum-strontium alloy coiled material;
the functional additive is prepared by chemical precipitation of a modifier, a saturated calcium oxide solution and pure carbon dioxide gas;
the modifier is prepared by dispersing strontium hydroxide solution in a mixed solution of deionized water and absolute ethyl alcohol and then chemically bonding with KH-560.
2. The aluminum-strontium alloy coiled material production process according to claim 1, wherein: the preparation method of the functional additive comprises the following steps:
Adding the modified substance into saturated calcium oxide solution at 35-45 ℃, stirring uniformly at 600-1000rpm, maintaining the stirring speed unchanged, introducing pure carbon dioxide gas at the flow rate of 25-45mL/min until the pH value is neutral, stopping the reaction, centrifuging, and drying to obtain the functional additive.
3. The aluminum-strontium alloy coiled material production process according to claim 2, wherein: the preparation method of the modifier comprises the following steps:
mixing 1.5M strontium hydroxide solution with deionized water, absolute ethyl alcohol and KH-560 for 30min by ultrasonic, heating to 35-45deg.C, stirring for 2-4h, and oven drying at 55deg.C to obtain modified product.
4. The aluminum-strontium alloy coiled material production process according to claim 2, wherein: the dosage ratio of the modifier to the saturated calcium oxide solution is 2-4g:15-25mL.
5. A process for producing an aluminum-strontium alloy coiled material according to claim 3, wherein: the dosage ratio of the 1.5M strontium hydroxide solution, the mixed solution and KH-560 is 25mL:43-47mL:0.6-1mL, in the mixed solution, the dosage ratio of deionized water to absolute ethyl alcohol is 15mL:28-32mL.
6. The aluminum-strontium alloy coiled material production process according to claim 1, wherein: the said
In the step S2 and the step S3, a graphite rotor rotary blowing method is adopted in the refining and degassing process, the carrier used is argon with the purity of 99.999 percent, the pressure of the argon is 0.1-0.3MPa, and the rotating rotor speed is 800-1400rpm.
7. The aluminum-strontium alloy coiled material production process according to claim 1, wherein: in the step S2, the refining degassing time is 20-30min, and the surface scum is cleaned after the refining degassing is finished.
8. The aluminum-strontium alloy coiled material production process according to claim 1, wherein: in the step S3, a functionalized additive is added by using a charging machine, the charging time is set to be 10-20min, and the electromagnetic stirring voltage is set to be 200-400V in the charging process.
9. The aluminum-strontium alloy coiled material production process according to claim 1, wherein: in the step S3, the temperature is raised to be kept at 800 ℃ for 15min, the temperature is raised to 900 ℃ at the speed of 10 ℃/min and kept at the temperature for 10min, and then the temperature is raised to 1120-1160 ℃ at the speed of 8 ℃/min and kept at the temperature for 10min.
10. The aluminum-strontium alloy coiled material production process according to claim 1, wherein: in the step S3, the deoxidizer is nano calcium carbide, the addition amount of the deoxidizer is 0.04-0.08% of the mass of the aluminum liquid, the degassing time is 15-25min, and slag removal treatment is carried out after the degassing is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410866187.7A CN118406914A (en) | 2024-07-01 | 2024-07-01 | Aluminum-strontium alloy coiled material production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410866187.7A CN118406914A (en) | 2024-07-01 | 2024-07-01 | Aluminum-strontium alloy coiled material production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118406914A true CN118406914A (en) | 2024-07-30 |
Family
ID=91991091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410866187.7A Pending CN118406914A (en) | 2024-07-01 | 2024-07-01 | Aluminum-strontium alloy coiled material production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118406914A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000022312A (en) * | 1996-06-28 | 2000-04-25 | 에이. 제이. 그린할 | Strontium-aluminum intermetalic alloy granules |
| CN111004935A (en) * | 2019-12-23 | 2020-04-14 | 河北四通新型金属材料股份有限公司 | Preparation method of high-purity aluminum-strontium intermediate alloy wire |
| CN115141945A (en) * | 2022-08-01 | 2022-10-04 | 立中四通轻合金集团股份有限公司 | Preparation method of aluminum-strontium intermediate alloy coiled material with strontium content of more than 10wt% |
-
2024
- 2024-07-01 CN CN202410866187.7A patent/CN118406914A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000022312A (en) * | 1996-06-28 | 2000-04-25 | 에이. 제이. 그린할 | Strontium-aluminum intermetalic alloy granules |
| CN111004935A (en) * | 2019-12-23 | 2020-04-14 | 河北四通新型金属材料股份有限公司 | Preparation method of high-purity aluminum-strontium intermediate alloy wire |
| CN115141945A (en) * | 2022-08-01 | 2022-10-04 | 立中四通轻合金集团股份有限公司 | Preparation method of aluminum-strontium intermediate alloy coiled material with strontium content of more than 10wt% |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108660344B (en) | Low-quenching-sensitivity Al-Mg-Si alloy and preparation method thereof | |
| CN101509088B (en) | High-strength, high-ductility rare earth aluminum alloy material and method of producing the same | |
| CN106893897B (en) | A kind of heat-resistant rare earth aluminium alloy conductor and its manufacture method | |
| CN113234949A (en) | Method for preparing regenerated wrought aluminum alloy from waste aluminum alloy | |
| CN111394602A (en) | High-quality aluminum alloy and preparation method thereof | |
| CN106868350B (en) | Strong heat-resistant aluminum alloy wire and its manufacture method in one kind | |
| CN115807196A (en) | High-metallurgical-quality high-toughness nitrogen-containing wind power gear steel and manufacturing method and application thereof | |
| CN118406914A (en) | Aluminum-strontium alloy coiled material production process | |
| WO2024164644A1 (en) | Duplex stainless steel submerged-arc flux-cored welding strip and flux used in conjunction, and preparation and use thereof | |
| CN114350993B (en) | Production process of high-strength aluminum alloy applied to bicycle frame | |
| CN113234977A (en) | High-corrosion-resistance Mg-Zn-Sc magnesium alloy and preparation method thereof | |
| CN115976375B (en) | Aluminum alloy for solar panel frame and section bar production method thereof | |
| CN111378880A (en) | Rare earth cast aluminum alloy mobile phone shell and preparation method thereof | |
| CN114703404B (en) | Aluminum foil material for low-density pinhole current collector of new energy lithium battery and preparation method of aluminum foil material | |
| CN115896653A (en) | Continuous casting and rolling device and method for high-strength aluminum alloy round rod | |
| CN113215455B (en) | High-quality secondary aluminum and preparation method thereof | |
| CN115679162A (en) | New energy automobile heat treatment-free aluminum alloy material and low-carbon preparation method | |
| CN112391572A (en) | Preparation process of Cu-Cr corrosion-resistant reinforcing steel bar | |
| CN117026026B (en) | High-elongation aluminum alloy material based on recycled aluminum and preparation method thereof | |
| CN115704069B (en) | Quaternary aluminum alloy and preparation method thereof | |
| CN117403167A (en) | Boron nitride coated aluminum-strontium alloy and preparation method and application thereof | |
| CN117987694B (en) | High-conductivity and high-corrosion-resistance aluminum monofilament and production process and application thereof | |
| CN118241085B (en) | Heat treatment-free aluminum alloy and preparation method thereof | |
| CN118389875A (en) | Preparation method of 2000 series aluminum alloy cast ingot | |
| CN118668085A (en) | Micro-nano reinforced high-content iron element 6-series aluminum alloy and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |