A processing technology of building thermal insulation aluminum alloy foil

A technology of aluminum alloy foil and processing technology, which is applied in the field of processing technology of aluminum alloy foil, can solve the problems that the corrosion resistance is difficult to reach the service life of buildings, the heat absorption capacity of aluminum metal foil is limited, and waste of energy and time is achieved. Improve heat treatment efficiency, improve toughness and corrosion resistance, and save energy

Active Publication Date: 2016-06-29
浙江佑丰新材料股份有限公司
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

However, due to the defects of the process and the influence of the harsh environment in the existing aluminum alloy materials, the corrosion resistance is difficult to reach the service life of the building.
[0003] In addition, the current annealing treatment of aluminum alloy foil mainly adopts the traditional box-type annealing method, which is to stack all the aluminum alloy foil rolls and then perform heat treatment. This method requires a large-capacity annealing furnace, in order to ensure the temperature uniformity in the furnace , the flow of air must be increased, and the heat absorption capacity of the aluminum metal foil itself is limited due to its thickness, so the power waste is serious; and the traditional box annealing process requires 5-6 hours of empty furnace cooling before each furnace is loaded. It also wastes a lot of energy and time

Method used

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preparation example Construction

[0024] Below the preparation method of the present invention is described in further detail, and it comprises the following steps:

[0025] First, the raw material components are sent into the electric melting furnace according to the proportion, the heating temperature in the furnace is 750--800°C, and the heating time is 2--3h, so that the components become a melt, and the mass ratio of the raw material components is : 0.5%-0.6% magnesium, 0.3%-0.4% silicon, 0.6%-0.8% manganese, 0.01%-0.05% copper, 0.01%-0.05% chromium, and the rest is aluminum; In the implementation process, although the temperature has not reached the melting point of chromium, due to the small amount of addition, it will not affect its performance; then the melt is emulsified by an emulsifier at a constant temperature for 1-2 hours, and the temperature is best kept at 700 ° C , so as to form a uniform mixture; then the mixture is cast and rolled into a green body, and the green body is pre-annealed at a t...

Embodiment 1

[0028] Send 0.5% magnesium, 0.3% silicon, 0.6% manganese, 0.01% copper, 0.01% chromium, and 98.58% aluminum into the electric melting furnace, and adjust the temperature in the electric melting furnace to 750°C. After keeping warm for 2 hours, the raw material in the electric melting furnace becomes a melt, and then the melt is kept warm and sent to an emulsifier at 700°C for emulsification. After about 1 hour, the mixture is cast and rolled into a green body, and the green body is heated at a temperature of 450 Annealing treatment under the condition of ℃, cold rolling the annealed green body, using the cold rolling temperature of 250 ℃ to obtain a 3.5mm aluminum alloy strip, pressing and winding the strip foil, and then rolling the obtained aluminum alloy foil Put it in the annealing furnace, and conduct heat treatment in the preheating zone with a temperature of 100°C, the heating zone with a heating rate of 50°C / h, the holding zone at a temperature of 400°C, and the cooling...

Embodiment 2

[0030] Feed 0.55% magnesium, 0.35% silicon, 0.7% manganese, 0.02% copper, 0.03% chromium, and 98.35% aluminum into the electric melting furnace, and adjust the temperature in the electric melting furnace to 780°C. After 2.5 hours of heat preservation, the raw material in the electric melting furnace becomes a melt, and then the melt is kept warm and sent to an emulsifier at 700°C for emulsification. After about 1.5 hours, the mixture is cast and rolled into a green body, and the green body is heated at temperature For annealing treatment at 470°C, cold-roll the annealed billet at a temperature of 250-350°C to obtain aluminum alloy strips of 3.5-4.5 mm, and foil-press and coil the strips. Then put the obtained aluminum alloy foil coil in the annealing furnace, and successively in the preheating zone with a temperature of 150°C, the heating zone with a heating rate of 100°C / h, the holding zone with a temperature of 420°C and the cooling zone with a cooling rate of 100°C / h. Heat ...

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Abstract

The invention relates to a process for processing an alumium-alloy foil and specifically relates to a process for processing a building insulation alumium-alloy foil. The process comprises the following steps: proportionally feeding raw material components into an electric melting furnace, heating the raw material components into a melt, mixing and emulsifying the melt to form an even mixture, forming the mixture into a blank through cast rolling, performing pre-annealing processing on the blank, forming the pre-annealed blank into an alumium-alloy strip through cold rolling, and performing foil lamination and curling treatment on the strip to obtain an alumium-alloy foil coil, and then performing continuous annealing on the alumium-alloy foil coil. The process has the characteristics that an emulsifier is used for mixing so that all the components are mixed quite evenly, the quality of the molded material is high and the emulsification efficiency is high; due to the adopted continuous annealing process, the heat treatment efficiency is improved and the energy consumption is also reduced.

Description

technical field [0001] The invention relates to a processing technology of aluminum alloy foil, in particular to a processing technology of aluminum alloy foil used as a building material. Background technique [0002] With the fiery expansion of the real estate industry, the building materials industry has developed rapidly. Aluminum alloy has become an important form of exterior wall and interior enclosure in current buildings, reflecting the new concept of modern architecture. Because aluminum has good electrical and thermal conductivity, good ductility, and high plasticity, it can be processed by various machines; the chemical properties of aluminum are active, and a dense oxide film with a thickness of about 5 nanometers is immediately formed on the surface of aluminum in dry air. , so that aluminum will not be further oxidized and can resist water, so aluminum has good corrosion resistance in the atmosphere; aluminum powder mixed with air is extremely flammable, and m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/04C22C21/00B23P15/00
Inventor 林荔琍唐臻易鉴荣李因吴坚
Owner 浙江佑丰新材料股份有限公司
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