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CN-122007353-A - Curtain wall plate base material and processing method

CN122007353ACN 122007353 ACN122007353 ACN 122007353ACN-122007353-A

Abstract

The application relates to a curtain wall plate base material and a processing method thereof, and relates to the technical field of aluminum alloy plate strip foil processing. The processing method comprises the steps of twin-roll continuous casting and rolling, cold rolling and annealing. The annealing process adopts a step-by-step annealing mode and comprises a plurality of stages of preheating, first oil removal, first temperature rise, second oil removal, second temperature rise, performance control, temperature reduction, adjustment and the like. The application effectively removes the rolling oil residue on the surface of the plate, eliminates the internal stress and refines the grain structure by combining the specific alloy component proportion (Al-Mn-Fe-Si-Cu system) with the multistage degreasing and recrystallization annealing process. The prepared curtain wall plate substrate has clean surface without oil spots, excellent mechanical property (tensile strength is more than or equal to 145MPa, elongation is more than or equal to 15%) and bending processability, and meets the use requirement of a high-quality building curtain wall.

Inventors

  • DONG ZEFANG
  • LI GUANGLONG
  • ZHAO YUANSHENG
  • WANG PEIPEI
  • GUO DONG

Assignees

  • 山东万通金属科技有限公司
  • 山东锦通金属科技有限公司

Dates

Publication Date
20260512
Application Date
20251231

Claims (7)

  1. 1. The curtain wall plate base material processing method is characterized by comprising the following steps of: s1, double-roller continuous casting and rolling, namely casting and rolling an aluminum alloy liquid metal into a blank roll through a continuous casting and rolling machine after smelting treatment; S2, cold rolling, namely cold rolling the blank coil from the initial thickness to the target thickness to obtain an aluminum alloy plate; And S3, annealing, namely carrying out step-by-step annealing treatment on the aluminum alloy plate in an annealing furnace to obtain a curtain wall plate base material.
  2. 2. The curtain wall plate base material processing method according to claim 1, wherein the mass fraction of each element in the aluminum alloy liquid metal is 1.0% -1.5% of manganese, 0.3% -0.7% of iron, 0.2% -0.6% of silicon, 0.05% -0.2% of copper, less than or equal to 0.03% of titanium, 0.001% -0.1% of zinc, and the balance of aluminum and unavoidable impurities.
  3. 3. The method for processing curtain wall plate base materials according to claim 1, wherein in the step S1, the temperature of a casting and rolling front box of a casting and rolling machine is 685-705 ℃, the length of a casting and rolling area is 45-55mm, the casting and rolling speed is 800-1000mm/min, the liquid metal is electrolytic aluminum liquid, and titanium wires are added before entering the casting and rolling machine, and online deslagging and degassing are carried out.
  4. 4. A method of processing a curtain wall panel substrate according to claim 1, wherein in step S2, the initial thickness of the blank roll is 6.4-7.4mm, and the target thickness is 1.5-3.5mm; the cold rolling pass is specifically to roll the blank coil to the middle thickness of 3.8-4.3mm and then roll the plate coil with the middle thickness to the target thickness.
  5. 5. The curtain wall panel substrate processing method according to claim 1, wherein in step S3, the step-by-step annealing specifically comprises the following steps performed in sequence: A preheating section, namely heating the annealing furnace to 230 ℃ within 0.5-3 h; The first oil removing section is to keep the temperature at 230 ℃ for 3-6 hours; A first heating stage, namely adjusting the temperature of the annealing furnace to 230-360 ℃ and controlling the heating time to 4-6h; A second oil removal section, namely adjusting the temperature of the annealing furnace to 340-370 ℃ and preserving the heat for 4-6 hours; a second heating section, namely adjusting the temperature of the annealing furnace to 360-410 ℃ and controlling the heating time to 1-3h; a performance control section, wherein the temperature of the annealing furnace is adjusted to 400-420 ℃, and the temperature is kept for 11-18 hours; a cooling section, wherein the temperature of the annealing furnace is adjusted to 380-420 ℃ and the treatment time is 0.5-2h; and adjusting the temperature of the annealing furnace to 380-400 ℃ and preserving the heat for 2-6 hours.
  6. 6. A curtain wall panel substrate prepared by the curtain wall panel substrate processing method of any one of claims 1-5.
  7. 7. The curtain wall panel substrate of claim 6, wherein the curtain wall panel substrate has a tensile strength of not less than 145MPa and an elongation after break of not less than 15%.

Description

Curtain wall plate base material and processing method Technical Field The invention relates to the technical field of aluminum alloy plate strip foil processing, in particular to a curtain wall plate base material and a processing method. Background The curtain wall aluminum plate has excellent mechanical property, corrosion resistance and easy cleaning, especially rich color and modeling capability, and adds unique visual effect to business, public and cultural buildings. Common aluminum alloys for curtain walls comprise 3003, 1100, 5005, 6061 and other series, and the thickness of the aluminum plate is generally 1.5 mm-3.5 mm. Different series of alloys have different performance and surface quality requirements due to their suitability for different architectural features. The high-quality aluminum plate for curtain wall should have sufficient strength, hardness and toughness. Generally, the tensile strength of the aluminum plate for the curtain wall is not lower than 145MPa, the elongation is not lower than 15%, the bending property is excellent, the surface quality is mainly required to be good in surface evenness, smooth in plate surface, free of obvious concave-convex, deformation or wavy, good in color uniformity and free of color difference, the surface cleanliness is excellent, and the surface of the aluminum plate is clean and free of defects such as greasy dirt, stains, scratches, sticky injuries and knocks. The problem of sticking and scratching defects of the aluminum alloy strip for the curtain wall plate in the production, processing and subsequent treatment processes is common, the surface quality of the aluminum alloy strip is affected, the mechanical property of the aluminum alloy strip is possibly reduced, the final use effect and the aesthetic degree of the curtain wall plate are further affected, and the production cost is increased. Disclosure of Invention In order to solve the problems, the application provides a curtain wall plate base material and a processing method. In a first aspect, the application provides a curtain wall plate substrate processing method, which adopts the following technical scheme: A curtain wall plate substrate processing method comprises the following steps: s1, double-roller continuous casting and rolling, namely casting and rolling an aluminum alloy liquid metal into a blank roll through a continuous casting and rolling machine after smelting treatment; S2, cold rolling, namely cold rolling the blank coil from the initial thickness to the target thickness to obtain an aluminum alloy plate; And S3, annealing, namely carrying out step-by-step annealing treatment on the aluminum alloy plate in an annealing furnace to obtain a curtain wall plate base material. Optionally, the aluminum alloy liquid metal comprises, by mass, 1.0% -1.5% of manganese, 0.3% -0.7% of iron, 0.2% -0.6% of silicon, 0.05% -0.2% of copper, less than or equal to 0.03% of titanium, 0.001% -0.1% of zinc, and the balance of aluminum and unavoidable impurities. Optionally, in the step S1, the temperature of a casting and rolling box of the casting and rolling machine is 685-705 ℃, the length of a casting and rolling area is 45-55mm, the casting and rolling speed is 800-1000mm/min, the liquid metal is electrolytic aluminum liquid, and titanium wires are added before entering the casting and rolling machine, and online deslagging and degassing are carried out. Optionally, in step S2, the initial thickness of the blank roll is 6.4-7.4mm, and the target thickness is 1.5-3.5mm; the cold rolling pass is specifically to roll the blank coil to the middle thickness of 3.8-4.3mm and then roll the plate coil with the middle thickness to the target thickness. Optionally, in step S3, the step-by-step annealing specifically includes the following steps sequentially performed: A preheating section, namely heating the annealing furnace to 230 ℃ within 0.5-3 h; The first oil removing section is to keep the temperature at 230 ℃ for 3-6 hours; A first heating stage, namely adjusting the temperature of the annealing furnace to 230-360 ℃ and controlling the heating time to 4-6h; A second oil removal section, namely adjusting the temperature of the annealing furnace to 340-370 ℃ and preserving the heat for 4-6 hours; a second heating section, namely adjusting the temperature of the annealing furnace to 360-410 ℃ and controlling the heating time to 1-3h; a performance control section, wherein the temperature of the annealing furnace is adjusted to 400-420 ℃, and the temperature is kept for 11-18 hours; a cooling section, wherein the temperature of the annealing furnace is adjusted to 380-420 ℃ and the treatment time is 0.5-2h; and adjusting the temperature of the annealing furnace to 380-400 ℃ and preserving the heat for 2-6 hours. In a second aspect, the present application provides a curtain wall panel substrate. A curtain wall plate base material, wherein the tensile strength of the curtain wall plate base mat