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CN-121972511-A - Method for producing nonstandard 3003 alloy ultrathin honeycomb foil with low carbon and low cost

CN121972511ACN 121972511 ACN121972511 ACN 121972511ACN-121972511-A

Abstract

The invention relates to the technical field of aluminum alloy production, in particular to a method for producing non-standard 3003 alloy ultrathin honeycomb foil with low carbon and low cost, which relies on a continuous casting and rolling production line, uses regenerated aluminum waste materials in a large proportion to produce thinned blanks, has the advantages of fewer rolling passes, short production flow, low production energy consumption, thinner finished product thickness, relatively wide alloy components, ensures that the phenomenon that the materials are scrapped due to the out-of-standard alloy components after the regenerated aluminum waste materials are used in a large proportion, directly retreats through a blank thinning belt sleeve according to the key adjustment refining process of a furnace burden structure, simultaneously overlaps the advantages of few dislocation in the continuous casting and rolling blank, low subsequent rolling and processing hardening speed and small rolling deformation tensile strength, reasonably sets rolling passes in the following procedure, realizes the rolling of the finished product by 3-pass and +3-pass foil rolling, reduces 4-8 rolling passes compared with the conventional production mode, greatly reduces the production cost, and realizes the stable production of products with 0.02mm thickness required by market.

Inventors

  • ZHANG GUO
  • ZHANG ANLE
  • YE DANDAN
  • LI JIAQI

Assignees

  • 洛阳龙鼎铝业有限公司

Dates

Publication Date
20260505
Application Date
20260407

Claims (9)

  1. 1. The method for producing the nonstandard 3003 alloy ultrathin honeycomb foil with low carbon and low cost is characterized by comprising the following steps of: S1, smelting, namely placing 10-20% of electrolytic aluminum liquid and 80-90% of reclaimed aluminum waste into a smelting furnace to prepare a melt, taking an original sample for testing after smelting, adding instant silicon, an iron agent, a titanium agent and a manganese agent according to a test result, adjusting alloy components to be qualified, wherein the mass percentages of the components are that Si is 0.10-0.60%, fe is 0.10-0.70%, cu is less than or equal to 0.1%, mn is 1.0-1.50%, mg is less than or equal to 0.10%, zn is less than or equal to 0.10%, ti is 0.02-0.05%, the sum of impurity elements is less than or equal to 0.03%, and the balance is aluminum, performing primary refining by using a refiner under electromagnetic stirring, performing manual stirring by using a slag removing car at the same time of more than or equal to 15min after stirring, performing slag removing after the stirring, sampling testing after the primary refining, ensuring that the components are qualified, performing secondary refining by using the refiner, introducing argon as refining gas, performing secondary refining by using the refiner, performing slag removing refining by using the refiner for more than or equal to 30min, performing three times of refining by using the three times of stirring, performing slag removing, and performing three times of refining by using the refiner, and performing three times of refining by using the three times by using the refiner for refining medium of which is equal to 10 ℃ and equal to or more than 15min, and equal to 10 ℃ after the time, performing three times of manual stirring, and three times, and performing three times of refining by performing three times, and three times, after the refining by performing three refining by taking three and three refining by taking the refining; S2, continuously casting, namely after the furnace is started, enabling the aluminum melt to stably flow into a diversion launder, adding an aluminum titanium boron wire grain refiner into the aluminum melt at a constant speed, sequentially entering a degassing box and a plate-type filter box for degassing and filtering, filtering the aluminum melt after degassing and filtering by a deep-bed filter box, directly flowing into a front box, wherein the temperature of the aluminum melt in the front box is 680-690 ℃, flowing into a casting cavity of a casting machine by a casting nozzle, solidifying the aluminum melt in the casting cavity to form a casting blank outlet plate, and casting at a speed of 6.8-7.2 m/min and a casting blank thickness of 19mm; S3, continuous rolling: the casting blank enters a triple rolling mill for rolling, the thickness of the outlet of the first frame plate blank of the triple rolling mill is 7.0-7.5 mm, the thickness of the second frame slab outlet of the triple tandem mill is 3.0-3.5 mm, second frame plate blank of triple tandem mill the thickness of the outlet is 3.0-3.5 mm; S4, intermediate annealing, namely suspending blanks rolled by continuous rolling into rolls in an annealing furnace, raising the furnace temperature of the annealing furnace to 400 ℃ for 2 hours, preserving heat for 12-14 hours, then lowering the furnace temperature to 350 ℃ and preserving heat for 2 hours, lowering the furnace temperature to 170 ℃ and preserving heat for 1 hour, and discharging; S5, cold rolling, namely rolling the blank subjected to intermediate annealing in a cold rolling cogging mill for 3 times, wherein the rolling passes are (1.5-1.7) mm, 0.7mm, 0.32mm and 0.15mm, and obtaining a cold rolled coil with the thickness of 0.15 mm; S6, longitudinal shearing, namely, trimming the cold rolled coil, wherein the tolerance of the width of the trimmed material is less than +/-1 mm, and aluminum powder is not accumulated at the edge; s7, foil rolling, namely rolling the material roll subjected to longitudinal shearing in an aluminum foil rolling mill for 3 times to obtain a finished product with the thickness of 0.02mm, wherein the rolling time is 0.15 mm-0.075 mm-0.038 mm-0.02 mm; S8, slitting the finished product, namely converting the finished product obtained after foil rolling in the step S7 into a vertical slitting machine for slitting, wherein the split layer is smaller than 0.5mm, and directly placing the slit finished product material into a suspended frame for suspending; S9, checking and packaging, namely transferring the cut finished product materials into a packaging workshop for packaging, and checking that the tensile strength of the aluminum foil finished product is more than or equal to 280MPa and the elongation is more than or equal to 3%.
  2. 2. The method for producing the non-standard 3003 alloy ultrathin honeycomb foil with low carbon and low cost according to claim 1, wherein in the step S2, argon and a particle refining agent are introduced as a degassing medium when a degassing tank is used for degassing, and slag is required to be removed once per hour through a slag removing port in production.
  3. 3. The method for producing the nonstandard 3003 alloy ultrathin honeycomb foil with low carbon and low cost according to claim 1, wherein in the step S3, when a casting blank enters a triple rolling mill for rolling, emulsion is sprayed to the casting blank for lubrication and cooling, and the spraying amount of the emulsion is more than or equal to 5000L/min.
  4. 4. The method for producing non-standard 3003 alloy ultrathin honeycomb foils at low carbon and low cost according to claim 1, wherein in step S3, when the third stand outlet plate blank of the triple tandem mill is coiled into a coil, all lower coils are provided with steel sleeves so as to facilitate suspended annealing during intermediate annealing of materials.
  5. 5. The method for producing non-standard 3003 alloy ultrathin honeycomb foils at low carbon and low cost according to claim 1, wherein in step S4, the third stand outlet plate blank of the triple rolling mill is transferred into an annealing furnace 2h after being taken off the machine to start intermediate annealing.
  6. 6. The method for producing non-standard 3003 alloy ultrathin honeycomb foil with low carbon and low cost according to claim 1, wherein in step S5, the metal temperature of the annealed tapping material is 60-80 ℃ and the rolling speed of each pass is controlled below 300mm/min, 400mm/min and 500 mm/min.
  7. 7. The method for producing non-standard 3003 alloy ultrathin honeycomb foil with low carbon and low cost according to claim 1, wherein in step S7, the rolling is performed in the last rolling process by using 80# base oil, the content of heavy oil residues is less than or equal to 2.0%, the content of rolling oil additive index alcohol is less than or equal to 0.5%, and the content of esters is 2.0% -3.0%.
  8. 8. The method for producing the nonstandard 3003 alloy ultrathin honeycomb foil with low carbon and low cost according to claim 1, wherein in the step S8, a finished product after foil rolling is cut by a cutting machine in 1h after being taken off, a hot air blower and an air knife are started during cutting, the temperature of the hot air blower is 260 ℃, the air inlet quantity is 500L/min, and the air knife is placed at an inlet guide roller to blow air in the material advancing direction.
  9. 9. The method for producing non-standard 3003 alloy ultrathin honeycomb foil with low carbon and low cost according to claim 1, wherein in step S9, the surface dyne value of the inspected material before packaging the finished product is not less than 32.

Description

Method for producing nonstandard 3003 alloy ultrathin honeycomb foil with low carbon and low cost Technical Field The invention relates to the technical field of aluminum alloy production, and particularly discloses a method for producing nonstandard 3003 alloy ultrathin honeycomb foil with low carbon and low cost. Background The honeycomb plate has the characteristics of ultra-light, ultra-high rigidity, sound insulation, heat insulation, fire prevention, moisture resistance, mildew resistance, extremely high flatness and the like, is widely applicable to the fields of aviation, traffic, construction, electronics, acoustics, household appliances, new energy sources and the like, and the honeycomb plate is used for replacing traditional wood plates and polymer plate materials, so that the using effect of the materials can be remarkably improved, the effects of weight reduction, environmental protection, economy and greenness are achieved, the honeycomb foil is an indispensable material for manufacturing the inner core of the honeycomb plate, and the using amount of the honeycomb foil is increased along with the increasing of the using amount of the honeycomb plate. At present, the domestic honeycomb foil is generally produced by casting and rolling 3003 alloy, the thickness is approximately between 0.03 and 0.08mm, and the production scheme has the disadvantages of high blank production cost, small yield, high cold rolling cost, low production efficiency and the like, and cannot meet the existing market demands. For example, chinese patent CN102206776B discloses a honeycomb foil material, in which only the technical content of alloy components is disclosed, copper is required to be added according to the alloy components to produce a blank, the copper price is far higher than the aluminum price, so that the cost of the main material is increased, and the shortage of copper resources is aggravated, chinese patent CN111676396a discloses a high-strength, high-elongation and corrosion-resistant aluminum foil for honeycomb cores and a manufacturing method thereof, in which 3003 alloy blanks are produced in a cast rolling manner, the blanks are also copper-containing, in which the blanks are required to be cast-rolled to be subjected to 3-pass cold rough rolling, one-pass high-temperature annealing, 2-4 pass cold finish rolling, one-pass trimming and 5-7 pass aluminum foil rolling to be produced into finished products, and the total number of rolling passes is 10-14, so that the production cost is high and the manufacturing time is long. Disclosure of Invention In order to solve the problems in the background art, the invention discloses a method for producing non-standard 3003 alloy ultrathin honeycomb foil with low carbon and low cost, which depends on a continuous casting and rolling production line, uses recycled aluminum waste materials in a large proportion to produce thinned blanks, has the advantages of fewer rolling passes, short production flow, low production energy consumption and thinner finished product thickness, and meets the requirement of the market on continuous thinning of honeycomb foil. In order to achieve the above purpose, the present invention adopts the following technical scheme: the method for producing the nonstandard 3003 alloy ultrathin honeycomb foil with low carbon and low cost comprises the following steps: S1, smelting, namely placing 10-20% of electrolytic aluminum liquid and 80-90% of reclaimed aluminum waste into a smelting furnace to prepare a melt, taking an original sample for testing after smelting, adding instant silicon, an iron agent, a titanium agent and a manganese agent according to a test result, adjusting alloy components to be qualified, wherein the mass percentages of the components are that Si is 0.10-0.60%, fe is 0.10-0.70%, cu is less than or equal to 0.1%, mn is 1.0-1.50%, mg is less than or equal to 0.10%, zn is less than or equal to 0.10%, ti is 0.02-0.05%, the sum of impurity elements is less than or equal to 0.03%, and the balance is aluminum, performing primary refining by using a refiner under electromagnetic stirring, simultaneously performing manual stirring by using a slag removing vehicle, standing for 15min after stirring, performing secondary refining by using a refiner as refining gas after the primary refining for 30min, standing for 10min, performing three times of slag removing, performing three times of grinding, and three times of grinding by using a three-time grinding machine as a grinding medium, standing for refining medium, and performing three times of three grinding, and standing for performing three grinding, and then, standing, and performing three grinding; S2, continuously casting, namely after the furnace is started, enabling the aluminum melt to stably flow into a diversion launder, adding an aluminum titanium boron wire grain refiner into the aluminum melt at a constant speed, sequentially entering a degassing box and a plate-