CN111763857A - Method for preparing 5182 aluminum alloy strip blank - Google Patents
Method for preparing 5182 aluminum alloy strip blank Download PDFInfo
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- CN111763857A CN111763857A CN202010654041.8A CN202010654041A CN111763857A CN 111763857 A CN111763857 A CN 111763857A CN 202010654041 A CN202010654041 A CN 202010654041A CN 111763857 A CN111763857 A CN 111763857A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/116—Refining the metal
- B22D11/117—Refining the metal by treating with gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/116—Refining the metal
- B22D11/119—Refining the metal by filtering
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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Abstract
The invention discloses a method for preparing a 5182 aluminum alloy strip blank, which comprises the steps of smelting, standing furnace refining, online refining, modification treatment, casting and rolling. The invention uses the combination mode of the aluminum alloy cast-rolling roller sleeve with upper copper and lower steel, meets the requirement of producing 5182 aluminum alloy cast-rolling strip blanks, reduces the production cost and produces competitive products. And finally producing the product meeting the requirements by reasonable component proportion, adopting advanced front box flow control technology and a series of process technical conditions matched with copper roller sleeve casting and rolling technology.
Description
Technical Field
The invention relates to the technical field of aluminum alloy strip blank preparation, in particular to a method for preparing 5182 aluminum alloy strip blank.
Background
5182 it belongs to Al-Mg-Si alloy, has good formability, corrosion resistance, weldability and moderate strength, can be used for manufacturing sheet metal parts and instruments of transportation vehicles and ships, has wide application range, and has relatively promising development prospect. However, the traditional hot rolling cogging method has complex production process and high production cost, and seriously restricts the marketization application of the 5182 aluminum alloy plate strip.
The double-roller continuous casting-rolling method is characterized by that it combines the processes of casting and hot-rolling cogging etc. into one continuous casting-rolling process to implement the direct production of cold-rolled thin slab from liquid metal, so that it can greatly simplify the production process of plate, strip and foil, and has the inherent advantage in cost control.
Disclosure of Invention
It is an object of the present invention to provide a method of producing a 5182 aluminum alloy strip blank to solve the above problems.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method of making a 5182 aluminum alloy strip blank, comprising the steps of:
step one, smelting:
the melt consists of the following components in percentage by weight: fe is less than or equal to 0.15 percent, Mg4.3-4.8 percent, Mn0.25-0.35 percent, Ti0.030-0.050 percent, Cr is less than or equal to 0.10 percent, Si is less than or equal to 0.15 percent, Cu is less than or equal to 0.10 percent, Zn is less than or equal to 0.15 percent, impurities are less than or equal to 0.15 percent, the balance is Al, the proportion range of solid materials such as aluminum ingots and waste materials with the same mark accounts for 25-40 percent of the total weight of the melt, the balance is electrolytic aluminum liquid, the smelting temperature is controlled at 740 and 755 ℃, and the smelting time is 8; the first refining of the smelting furnace adopts powder injection refining, and the refining after alloy addition adopts CCl4Refining, wherein carriers are argon; in the step, by reasonably adding each component element, the temperature difference of a solid-liquid two-phase region of the 5182 alloy is reduced as much as possible on the premise that the components meet the national standard requirements, and the center segregation tendency in the casting and rolling process is reduced;
step two, standing furnace refining:
refining the melt obtained in the step one in a standing furnace, wherein the standing furnace adopts argon refining, 150 plus 250kg of cold charge with the same mark is added before each refining, the refining temperature is controlled at 750 ℃ with 730 plus, the refining time is 30min, and the refining is carried out once every 4 h; in the step, by adding the solid waste with the same mark into the standing furnace, the active crystallization core in the melt is increased, and then the refining period is reasonably set, so that the overburning of the melt is reduced as much as possible, and the metallurgical quality of the melt after crystallization is ensured.
Step three, on-line refining:
degassing the product obtained in the step two, wherein a silicon nitride rotor is adopted in a degassing box for online degassing, the online refining gas is a mixed gas of argon and chlorine, and a 30PPI +50PPI two-stage ceramic filter plate is adopted in a filter box for filtering the melt;
step four, modification treatment:
modifying the melt obtained in the third step, wherein the modifier is Al-5Ti-1B alloy and is added in an amount of 2-6 kg/t;
step five, casting and rolling:
casting and rolling the melt obtained in the step four by adopting a double-roller inclined casting and rolling machine, wherein an upper roller of the casting and rolling machine adopts a copper alloy roller sleeve, and a lower roller of the casting and rolling machine adopts a steel roller sleeve; the front box adopts a high-precision laser flow control system to control the liquid level height; the roller surface is lubricated by adopting a graphite spraying process; the length of the casting and rolling area is 38-50mm, the temperature of the front box is controlled to be 710-; compared with the conventional steel roll sleeve, the copper roll sleeve has stronger cooling capacity and can be used for producing some alloys which cannot be produced by the conventional steel roll sleeve casting and rolling mode; the conventional production mode of the current 5182 alloy strip is ingot casting and hot rolling, and the 5182 alloy strip is produced by adopting a mode of directly casting and rolling molten aluminum, so that the traditional hot rolling production mode is replaced by a short-flow casting and rolling production mode, the processing procedures of remelting aluminum ingots, ingot casting, surface milling, soaking, hot rolling and the like are omitted, the yield is improved, the production cost is reduced, the energy is saved, and the method belongs to a green and environment-friendly processing mode; the roll sleeve of the cast-rolling roll adopts a combination mode of upper copper and lower steel, so that a 5182 alloy plate can be produced by cast rolling, and compared with the combination of double copper roll sleeves, the production cost can be reduced, and the product competitiveness is improved;
step six, coiling:
and coiling the produced cast and rolled strip, and cutting the strip into coils according to the required weight.
All the components in the step one are added in the form of master alloy. The 5182 aluminum alloy melt is prepared by using the intermediate alloy, an alloy additive is not used, slag inclusion and trace impurity elements are remarkably reduced to enter the aluminum melt, and compared with the conventional alloy additive, the purity of the melt can be improved.
And fifthly, the diameter of the upper roller of the casting and rolling machine is larger than that of the lower roller, and the difference of the diameters of the rollers is 5-10 mm. By adopting the method that the diameter of the upper roller (copper roller sleeve) is larger than that of the lower roller (steel roller sleeve), the heat transfer of the upper roller and the lower roller is reasonably distributed, and the internal quality of the strip billet is improved.
And controlling the fluctuation range of the liquid level of the front box to be less than or equal to +/-0.3 mm by the high-precision laser flow control system in the step five. The liquid level of the front box is stabilized by adopting an advanced laser flow control system, the fluctuation range of the liquid level of the front box is controlled to be less than or equal to +/-0.3 mm, and the front box has obvious precision advantage compared with a conventional mechanical lever current stabilizer, and can obviously improve the cross grain defect of the plate surface caused by the fluctuation of the liquid level of the front box.
Compared with the prior art, the invention has the beneficial effects that:
the method fully utilizes the characteristic of strong cooling capacity of the copper alloy roller sleeve, and the 5182 aluminum alloy strip blank prepared by the casting and rolling method can obviously reduce the production cost and has great market competitiveness.
The invention uses the combination mode of the aluminum alloy cast-rolling roller sleeve with upper copper and lower steel, meets the requirement of producing 5182 aluminum alloy cast-rolling strip blanks, reduces the production cost and produces competitive products. And finally producing the product meeting the requirements by reasonable component proportion, adopting advanced front box flow control technology and a series of process technical conditions matched with copper roller sleeve casting and rolling technology.
Detailed Description
The present invention will be further described with reference to the following embodiments.
A method of making a 5182 aluminum alloy strip blank comprising the steps of:
step one, smelting:
the melt consists of the following components in percentage by weight: fe is less than or equal to 0.15 percent, Mg4.3-4.8 percent, Mn0.25-0.35 percent, Ti0.030-0.050 percent, Cr is less than or equal to 0.10 percent, Si is less than or equal to 0.15 percent, Cu is less than or equal to 0.10 percent, Zn is less than or equal to 0.15 percent, impurities are less than or equal to 0.15 percent, and the balance is Al, wherein all the components are added in a form of intermediate alloy; the proportion range of solid materials such as aluminum ingots, waste materials with the same mark and the like accounting for the total weight of the melt is 25-40%, the other materials are electrolytic aluminum liquid, the smelting temperature is controlled at 740 and 755 ℃, and the smelting time is 8-12 h; the first refining of the smelting furnace adopts powder injection refining, and the refining after alloy addition adopts CCl4Refining and carrier allIs argon;
step two, standing furnace refining:
refining the melt obtained in the step one in a standing furnace, wherein the standing furnace adopts argon refining, 150 plus 250kg of cold charge with the same mark is added before each refining, the refining temperature is controlled at 750 ℃ with 730 plus, the refining time is 30min, and the refining is carried out once every 4 h;
step three, on-line refining:
degassing the product obtained in the step two, wherein a silicon nitride rotor is adopted in a degassing box for online degassing, the online refining gas is a mixed gas of argon and chlorine, and a 30PPI +50PPI two-stage ceramic filter plate is adopted in a filter box for filtering the melt;
step four, modification treatment:
modifying the melt obtained in the third step, wherein the modifier is Al-5Ti-1B alloy and is added in an amount of 2-6 kg/t;
step five, casting and rolling:
casting and rolling the melt obtained in the fourth step by adopting a double-roller inclined casting and rolling machine, wherein an upper roller of the casting and rolling machine adopts a copper alloy roller sleeve, a lower roller of the casting and rolling machine adopts a steel roller sleeve, the roller diameter of the upper roller is larger than that of the lower roller, and the roller diameter difference is 5-10 mm; the front box adopts a high-precision laser flow control system to control the liquid level height, and the fluctuation range of the liquid level of the front box is less than or equal to +/-0.3 mm; the roller surface is lubricated by adopting a graphite spraying process; the length of the casting and rolling area is 38-50mm, the temperature of the front box is controlled to be 710-;
step six, coiling:
and coiling the produced cast and rolled strip, and cutting the coil according to the required weight to obtain a product with the internal quality, the surface quality and the mechanical property meeting the requirements.
Example 1:
a method of making a 5182 aluminum alloy strip blank comprising the steps of:
step one, smelting:
the melt consists of the following components in percentage by weight: 0.13 percent of Fe0.3 percent, 4.3 percent of Mg4.25 percent of Mn0.25 percent of Ti0.030 percent of Cr0.09 percent, 0.12 percent of Si0.08 percent of Cu0.08 percent of Zn0.07 percent of impurity 0.14 percent of Al in balanceAdding in the form of master alloy; the proportion range of solid materials such as aluminum ingots, waste materials with the same mark and the like accounting for the total weight of the melt is 25 percent, the other materials are electrolytic aluminum liquid, the smelting temperature is controlled to be 740 and 745 ℃, and the smelting time is 8 hours; the first refining of the smelting furnace adopts powder injection refining, and the refining after alloy addition adopts CCl4Refining, wherein carriers are argon;
step two, standing furnace refining:
refining the melt obtained in the first step in a standing furnace, wherein the standing furnace adopts argon refining, 150kg of cold materials with the same mark are added before each refining, the refining temperature is controlled at 730-735 ℃, the refining time is 30min, and the refining is carried out once every 4 h;
step three, on-line refining:
degassing the product obtained in the step two, wherein a silicon nitride rotor is adopted in a degassing box for online degassing, the online refining gas is a mixed gas of argon and chlorine, and a 30PPI +50PPI two-stage ceramic filter plate is adopted in a filter box for filtering the melt;
step four, modification treatment:
modifying the melt obtained in the third step, wherein the modifier is Al-5Ti-1B alloy and is added in an amount of 2 kg/t;
step five, casting and rolling:
casting and rolling the melt obtained in the fourth step by adopting a double-roller inclined casting and rolling machine, wherein an upper roller of the casting and rolling machine adopts a copper alloy roller sleeve, a lower roller of the casting and rolling machine adopts a steel roller sleeve, the roller diameter of the upper roller is larger than that of the lower roller, and the roller diameter difference is 5 mm; the front box adopts a high-precision laser flow control system to control the liquid level height, and the fluctuation range of the liquid level of the front box is less than or equal to +/-0.3 mm; the roller surface is lubricated by adopting a graphite spraying process; the length of the casting and rolling area is 38mm, the temperature of the front box is controlled to be 710-713 ℃, the casting and rolling speed is controlled to be 700mm/min, the temperature of cooling water is 20 ℃, and a casting and rolling blank with the thickness of 8.7mm is obtained;
step six, coiling:
and coiling the produced cast and rolled strip, and cutting the coil according to the required weight to obtain a product with the internal quality, the surface quality and the mechanical property meeting the requirements.
Example 2:
a method of making a 5182 aluminum alloy strip blank comprising the steps of:
step one, smelting:
the melt consists of the following components in percentage by weight: 0.15% of Fe0.8%, 4.8% of Mg4.35%, 0.050% of Ti0.050%, 0.10% of Cr0.15%, 0.15% of Si0.10%, 0.15% of Cu0.15%, 0.15% of Zn0.15% of impurities, and the balance of Al, wherein all the components are added in the form of intermediate alloy; the proportion range of solid materials such as aluminum ingots, waste materials with the same mark and the like accounting for the total weight of the melt is 40 percent, the other materials are electrolytic aluminum liquid, the smelting temperature is controlled at 750-755 ℃, and the smelting time is 12 hours; the first refining of the smelting furnace adopts powder injection refining, and the refining after alloy addition adopts CCl4Refining, wherein carriers are argon;
step two, standing furnace refining:
refining the melt obtained in the step one in a standing furnace, wherein the standing furnace adopts argon refining, 250kg of cold charge with the same mark is added before each refining, the refining temperature is controlled at 745-750 ℃, the refining time is 30min, and the refining is carried out once every 4 h;
step three, on-line refining:
degassing the product obtained in the step two, wherein a silicon nitride rotor is adopted in a degassing box for online degassing, the online refining gas is a mixed gas of argon and chlorine, and a 30PPI +50PPI two-stage ceramic filter plate is adopted in a filter box for filtering the melt;
step four, modification treatment:
modifying the melt obtained in the third step, wherein the modifier is Al-5Ti-1B alloy and is added in an amount of 6 kg/t;
step five, casting and rolling:
casting and rolling the melt obtained in the fourth step by adopting a double-roller inclined casting and rolling machine, wherein an upper roller of the casting and rolling machine adopts a copper alloy roller sleeve, a lower roller of the casting and rolling machine adopts a steel roller sleeve, the roller diameter of the upper roller is larger than that of the lower roller, and the roller diameter difference is 10 mm; the front box adopts a high-precision laser flow control system to control the liquid level height, and the fluctuation range of the liquid level of the front box is less than or equal to +/-0.3 mm; the roller surface is lubricated by adopting a graphite spraying process; the length of the casting and rolling area is 50mm, the temperature of the front box is controlled to 717-720 ℃, the casting and rolling speed is controlled to 1000mm/min, the temperature of the cooling water is 35 ℃, and a casting and rolling blank with the thickness of 8.3mm is obtained;
step six, coiling:
and coiling the produced cast and rolled strip, and cutting the coil according to the required weight to obtain a product with the internal quality, the surface quality and the mechanical property meeting the requirements.
Example 3:
a method of making a 5182 aluminum alloy strip blank comprising the steps of:
step one, smelting:
the melt consists of the following components in percentage by weight: 0.13% of Fe0.5%, 4.5% of Mg4.5%, 0.28% of Mn0.035%, 0.09% of Cr0.09%, 0.12% of Si0.12%, 0.08% of Cu0.07%, 0.15% of impurities and the balance of Al, wherein all the components are added in the form of intermediate alloy; the proportion range of solid materials such as aluminum ingots, waste materials with the same mark and the like accounting for the total weight of the melt is 32 percent, the other materials are electrolytic aluminum liquid, the smelting temperature is controlled at 745-750 ℃, and the smelting time is 10 hours; the first refining of the smelting furnace adopts powder injection refining, and the refining after alloy addition adopts CCl4Refining, wherein carriers are argon;
step two, standing furnace refining:
refining the melt obtained in the step one in a standing furnace, wherein the standing furnace is refined by argon, 220kg of cold materials with the same mark are added before each refining, the refining temperature is controlled at 740-745 ℃, the refining time is 30min, and the refining is carried out once every 4 h;
step three, on-line refining:
degassing the product obtained in the step two, wherein a silicon nitride rotor is adopted in a degassing box for online degassing, the online refining gas is a mixed gas of argon and chlorine, and a 30PPI +50PPI two-stage ceramic filter plate is adopted in a filter box for filtering the melt;
step four, modification treatment:
modifying the melt obtained in the third step, wherein the modifier is Al-5Ti-1B alloy and is added in an amount of 3 kg/t;
step five, casting and rolling:
casting and rolling the melt obtained in the fourth step by adopting a double-roller inclined casting and rolling machine, wherein an upper roller of the casting and rolling machine adopts a copper alloy roller sleeve, a lower roller of the casting and rolling machine adopts a steel roller sleeve, the roller diameter of the upper roller is larger than that of the lower roller, and the roller diameter difference is 8 mm; the front box adopts a high-precision laser flow control system to control the liquid level height, and the fluctuation range of the liquid level of the front box is less than or equal to +/-0.3 mm; the roller surface is lubricated by adopting a graphite spraying process; the length of the casting and rolling area is 39mm, the temperature of the front box is controlled at 715-718 ℃, the casting and rolling speed is controlled at 910mm/min, the temperature of the cooling water is 29 ℃, and a casting and rolling blank with the thickness of 8.6mm is obtained;
step six, coiling:
and coiling the produced cast and rolled strip, and cutting the coil according to the required weight to obtain a product with the internal quality, the surface quality and the mechanical property meeting the requirements.
Example 4:
a method of making a 5182 aluminum alloy strip blank comprising the steps of:
step one, smelting:
the melt consists of the following components in percentage by weight: 0.15% of Fe0.7%, 4.7% of Mg4.7%, 0.34% of Mn0.032%, 0.09% of Cr0.14%, 0.14% of Si0.08% of Cu0.10%, 0.12% of impurities and the balance of Al, wherein all the components are added in the form of intermediate alloy; the proportion range of solid materials such as aluminum ingots, waste materials with the same mark and the like accounting for the total weight of the melt is 33 percent, the other materials are electrolytic aluminum liquid, the smelting temperature is controlled to be 746-; the first refining of the smelting furnace adopts powder injection refining, and the refining after alloy addition adopts CCl4Refining, wherein carriers are argon;
step two, standing furnace refining:
refining the melt obtained in the step one in a standing furnace, wherein the standing furnace adopts argon refining, 210kg of cold charge with the same mark is added before each refining, the refining temperature is controlled to be 738-743 ℃, the refining time is 30min, and the refining is carried out once every 4 h;
step three, on-line refining:
degassing the product obtained in the step two, wherein a silicon nitride rotor is adopted in a degassing box for online degassing, the online refining gas is a mixed gas of argon and chlorine, and a 30PPI +50PPI two-stage ceramic filter plate is adopted in a filter box for filtering the melt;
step four, modification treatment:
modifying the melt obtained in the third step, wherein the modifier is Al-5Ti-1B alloy and is added in an amount of 4 kg/t;
step five, casting and rolling:
casting and rolling the melt obtained in the fourth step by adopting a double-roller inclined casting and rolling machine, wherein an upper roller of the casting and rolling machine adopts a copper alloy roller sleeve, a lower roller of the casting and rolling machine adopts a steel roller sleeve, the roller diameter of the upper roller is larger than that of the lower roller, and the roller diameter difference is 5 mm; the front box adopts a high-precision laser flow control system to control the liquid level height, and the fluctuation range of the liquid level of the front box is less than or equal to +/-0.3 mm; the roller surface is lubricated by adopting a graphite spraying process; the length of the casting and rolling area is 43mm, the temperature of the front box is controlled to be 713-715 ℃, the casting and rolling speed is controlled to be 875mm/min, the temperature of the cooling water is 31 ℃, and a casting and rolling blank with the thickness of 8.4mm is obtained;
step six, coiling:
and coiling the produced cast and rolled strip, and cutting the coil according to the required weight to obtain a product with the internal quality, the surface quality and the mechanical property meeting the requirements.
Claims (4)
1. A method of making a 5182 aluminum alloy strip blank, comprising the steps of:
step one, smelting:
the melt consists of the following components in percentage by weight: fe is less than or equal to 0.15 percent, Mg4.3-4.8 percent, Mn0.25-0.35 percent, Ti0.030-0.050 percent, Cr is less than or equal to 0.10 percent, Si is less than or equal to 0.15 percent, Cu is less than or equal to 0.10 percent, Zn is less than or equal to 0.15 percent, impurities are less than or equal to 0.15 percent, the balance is Al, the proportion range of solid materials such as aluminum ingots and waste materials with the same mark accounts for 25-40 percent of the total weight of the melt, the balance is electrolytic aluminum liquid, the smelting temperature is controlled at 740 and 755 ℃, and the smelting time is 8; the first refining of the smelting furnace adopts powder injection refining, and the refining after alloy addition adopts CCl4Refining, wherein carriers are argon;
step two, standing furnace refining:
refining the melt obtained in the step one in a standing furnace, wherein the standing furnace adopts argon refining, 150 plus 250kg of cold charge with the same mark is added before each refining, the refining temperature is controlled at 750 ℃ with 730 plus, the refining time is 30min, and the refining is carried out once every 4 h;
step three, on-line refining:
degassing the product obtained in the step two, wherein a silicon nitride rotor is adopted in a degassing box for online degassing, the online refining gas is a mixed gas of argon and chlorine, and a 30PPI +50PPI two-stage ceramic filter plate is adopted in a filter box for filtering the melt;
step four, modification treatment:
modifying the melt obtained in the third step, wherein the modifier is Al-5Ti-1B alloy and is added in an amount of 2-6 kg/t;
step five, casting and rolling:
casting and rolling the melt obtained in the step four by adopting a double-roller inclined casting and rolling machine, wherein an upper roller of the casting and rolling machine adopts a copper alloy roller sleeve, and a lower roller of the casting and rolling machine adopts a steel roller sleeve; the front box adopts a high-precision laser flow control system to control the liquid level height; the roller surface is lubricated by adopting a graphite spraying process; the length of the casting and rolling area is 38-50mm, the temperature of the front box is controlled to be 710-;
step six, coiling:
and coiling the produced cast and rolled strip, and cutting the strip into coils according to the required weight.
2. A method of making a 5182 aluminum alloy strip as set forth in claim 1 wherein: all the components in the step one are added in the form of master alloy.
3. A method of making 5182 an aluminum alloy strip as claimed in claim 1 or 2 wherein: and fifthly, the diameter of the upper roller of the casting and rolling machine is larger than that of the lower roller, and the difference of the diameters of the rollers is 5-10 mm.
4. A method of making 5182 an aluminum alloy strip as set forth in claim 4 wherein: and controlling the fluctuation range of the liquid level of the front box to be less than or equal to +/-0.3 mm by the high-precision laser flow control system in the step five.
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| WO2024113944A1 (en) * | 2022-11-30 | 2024-06-06 | 中铝材料应用研究院有限公司 | 5xxx aluminum alloy capable of refining mig weld grains, preparation method therefor, use thereof |
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| WO2024113944A1 (en) * | 2022-11-30 | 2024-06-06 | 中铝材料应用研究院有限公司 | 5xxx aluminum alloy capable of refining mig weld grains, preparation method therefor, use thereof |
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| CN111763857B (en) | 2022-05-10 |
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