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Aluminum foil for cryogenic adiabatic paper and preparation method thereof

A cryogenic insulation, aluminum foil technology, applied in metal rolling, manufacturing tools, temperature control and other directions, can solve the problems affecting the storage and safety of LNG storage tanks, reducing the performance of cryogenic insulation, and being unable to achieve vacuuming. Smaller grains, higher tensile strength, and fewer pinholes

Pending Publication Date: 2020-08-28
JIANGSU ZHONGJI LAMINATION MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, the embodiment of the present invention provides an aluminum foil used for cryogenic insulation paper and its preparation method, in order to solve the problem that the aluminum foil in the prior art has too many pinholes and cannot achieve complete vacuuming, which seriously reduces the cryogenic heat preservation performance. , and ultimately directly affect the storage capacity and safety of LNG storage tanks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This embodiment provides a method for preparing aluminum foil for cryogenic insulation paper, comprising the following steps:

[0028] Step 1. Put the electrolytic aluminum liquid, high-purity aluminum ingot and alloy regulator into a melting furnace at a temperature of 718-722°C to prepare an aluminum melt, and perform deslagging and degassing treatment on the aluminum melt, so that every 100g The hydrogen content of the aluminum melt is less than or equal to 0.16mL; wherein, the mass percentage of the electrolytic aluminum liquid is 51%, the mass percentage of the high-purity aluminum ingot is 40%, and the balance is an alloy regulator; the high-purity aluminum An ingot refers to an aluminum ingot with an aluminum content of 99.90% to 99.999%; the aluminum melt includes the following components calculated by mass percentage: 0.8% Fe, 0.17% Si, 0.3% Cu, 0.05% Zn, 0.01% Ti, The other impurities do not exceed 0.05% individually, and the sum does not exceed 0.15%, and the...

Embodiment 2

[0034] This embodiment provides a method for preparing aluminum foil for cryogenic insulation paper, comprising the following steps:

[0035] Step 1. Put electrolytic aluminum liquid, high-purity aluminum ingot and alloy regulator into a smelting furnace with a temperature of 722°C to prepare an aluminum melt, and perform deslagging and degassing treatment on the aluminum melt, so that every 100g of the The hydrogen content of the aluminum melt is less than or equal to 0.16mL; wherein, the mass percentage of the electrolytic aluminum liquid is 59%, the mass percentage of the high-purity aluminum ingot is 40%, and the balance is an alloy regulator; the high-purity aluminum ingot is Refers to an aluminum ingot with an aluminum content of 99.90% to 99.999%; the aluminum melt includes the following components calculated by mass percentage: Fe 1.0%, Si 0.20%, Cu 0.3%, Zn 0.05%, Ti 0.01%, others The single impurity does not exceed 0.05%, the sum does not exceed 0.15%, and the rest i...

Embodiment 3

[0041] This embodiment provides a method for preparing aluminum foil for cryogenic insulation paper, comprising the following steps:

[0042] Step 1. Put the electrolytic aluminum liquid, high-purity aluminum ingot and alloy modifier into a melting furnace with a temperature of 720°C to prepare an aluminum melt, and perform deslagging and degassing treatment on the aluminum melt, so that every 100g of the The hydrogen content of the aluminum melt is less than or equal to 0.16mL; wherein, the mass percentage of the electrolytic aluminum liquid is 51%, the mass percentage of the high-purity aluminum ingot is 48%, and the balance is an alloy regulator; the high-purity aluminum ingot is Refers to an aluminum ingot with an aluminum content of 99.90% to 99.999%; the aluminum melt includes the following components calculated by mass percentage: 0.9% Fe, 0.185% Si, 0.15% Cu, 0.05% Zn, 0.01% Ti, others The single impurity does not exceed 0.05%, the sum does not exceed 0.15%, and the re...

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Abstract

The embodiment of the invention discloses an aluminum foil for cryogenic adiabatic paper and a preparation method thereof. The preparation method comprises the following steps that 1, an electrolyticaluminum liquid, a high-purity aluminum ingot and an alloy regulator are put into a smelting furnace to prepare aluminum melt; 2, the aluminum melt is molten into molten aluminum; 3, the molten aluminum is introduced into a casting rolling mill to be cast into a plate blank; 4, the plate blank is put into a cold rolling mill to be rolled again, and then is fed into an annealing furnace to preparean aluminum foil workblank; and 5, feeding in a foil rolling mill is conducted to prepare the aluminum foil. According to the aluminum foil preparation method, firstly, the material is prepared into the aluminum melt, then the aluminum melt is molten into the molten aluminum, and a refiner is added for refining treatment, so that the grain size of the aluminum foil is small and uniform, by adopting the method, the aluminum foil workblank is made into the aluminum foil, the tensile strength of the aluminum foil can be greatly improved, so that the tensile strength of the cryogenic adiabatic paper is improved, and the pinhole number of the aluminum foil is reduced.

Description

technical field [0001] The invention relates to the field of production and processing of aluminum foil, in particular to an aluminum foil used for cryogenic insulation paper and a preparation method thereof. Background technique [0002] With the advancement of technology and the improvement of human living standards, liquefied natural gas (LNG), liquid nitrogen (LN 2 ), liquid oxygen (LO 2 ), liquid carbon dioxide (LCO 2 ), liquefied petroleum gas (LPG) and other cryogenic liquefied substances are gradually expanding, especially LNG (mainly composed of methane). LNG is condensed into a liquid by cooling gaseous natural gas at normal pressure to -162°C. The storage and transportation space can be greatly saved after natural gas is liquefied. The volume after liquefaction is about 1 / 600 of the gaseous volume, and it has the characteristics of large calorific value and high performance. LNG is a clean and efficient energy source. As a clean energy source, it is becoming m...

Claims

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Application Information

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IPC IPC(8): B21B1/40B21B3/00B21B15/00B21B37/74B21B37/48C22C21/00C22C1/02B22D11/12
CPCB21B1/40B21B3/00B21B15/00B21B37/74B21B37/48C22C21/00C22C1/026B22D11/1206B22D11/003C22F1/04B21B2003/001
Inventor 程建强宋明
Owner JIANGSU ZHONGJI LAMINATION MATERIALS
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