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High-toughness high-thermal-conductivity easy-to-weld aluminum-based composite material for 5G base station and preparation method

An aluminum-based composite material with high thermal conductivity technology, applied in the field of aluminum-based composite materials, can solve the problems of alloy thermal conductivity, unfavorable formability, reduction of alloy thermal conductivity, corrosion resistance, plastic toughness, grain growth, etc.

Pending Publication Date: 2021-09-10
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention patent with the application number "CN201910691412.7" reports "a method for preparing an inflatable water-cooled plate and the composite plate used". Regulate and refine the alloy grains, and improve the basic cold weldability and yield of stack rolling through strict temperature and time control; however, the introduction of a large number of alloying elements will reduce the thermal conductivity, corrosion resistance and plastic toughness of the alloy, and a single Ti element The ability to refine grains is limited, and the high rolling temperature leads to extremely rapid growth of grains, which is detrimental to the thermal conductivity and formability of the alloy

Method used

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  • High-toughness high-thermal-conductivity easy-to-weld aluminum-based composite material for 5G base station and preparation method
  • High-toughness high-thermal-conductivity easy-to-weld aluminum-based composite material for 5G base station and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The composition (mass percentage) of the composite material is as follows: Si 1.2, Fe 0.8, Cu 0.1, Mn 1.5, Zr0.8, Ti0.8, B 1.0, O 0.8, Er 0.2, Sc 0.2, Y 0.2, Zn 0.2, Mg 0.2 , Cr 0.2, and the rest are Al.

[0031] In an industrial natural gas smelting furnace, add 5T of industrial pure aluminum ingots, melt to 870°C and keep warm, then weigh and add Al-20Si, Al-20Cr, Fe agent (content 70%), Mn agent (content 70%), Pure Cu, pure Zn, pure Mg, etc. adjust the alloy composition to the design value; pour it into the holding furnace (850°C) of the electromagnetic ultrasonic control twin-roll continuous casting and rolling device, start the stirring degassing system and the electromagnetic stirring system, with the help of the purity of 99.99% Ar gas, blown into the weighed and dried K from the degassing pipeline 2 ZrF 6 、K 2 TiF 6 、KBF 4 and Na 2 B 4 o 7 Mixing powders to generate nano-ZrB in situ with Al melt 2 、Al 2 o 3 、TiB 2 Ceramic particles, the total time fo...

Embodiment 2

[0033] The composition (mass percentage) of the composite material is as follows: Si 1.0, Fe 0.6, Cu 0.05, Mn 1.0, Zr 0.5, Ti 0.5, B 0.5, O 0.5, Er 0.05, Sc 0.05, Y 0.05, Zn 0.5, Mg 0.5, Cr 0.5, the rest is Al.

[0034] In an industrial natural gas smelting furnace, add 5T of industrial pure aluminum ingots, melt to 900°C and keep warm, then weigh and add Al-20Si, Al-20Cr, Fe agent (content 70%), Mn agent (content 70%), Pure Cu, pure Zn, pure Mg, etc. adjust the alloy composition to the design value; pour it into the holding furnace (870°C) of the electromagnetic ultrasonic control twin-roll continuous casting and rolling device, start the stirring degassing system and the electromagnetic stirring system, with the help of the purity of 99.99% Ar gas, blown into the weighed and dried K from the degassing pipeline 2 ZrF 6 、K 2 TiF 6 、KBF 4 and Na 2 B 4 o 7 Mixing powders to generate nano-ZrB in situ with Al melt 2 、Al 2 o 3 、TiB 2 For ceramic particles, the total tim...

Embodiment 3

[0036] The composition (mass percentage) of the composite material is as follows: Si 1.5, Fe 1.0, Cu 0.2, Mn 2.0, Zr1.0, Ti1.0, B 2.0, O 1.0, Er 0.3, Sc 0.3, Y 0.5, Zn 0.1, Mg 0.1 , Gr 0.1, the rest is Al.

[0037] In the industrial natural gas smelting furnace, add 5T of industrial pure aluminum ingot, melt it at 900°C and keep it warm, then weigh and add Al-20Si, Al-20Cr, Fe agent (content 70%), Mn agent (content 70%), Pure Cu, pure Zn, pure Mg, etc. adjust the alloy composition to the design value; pour it into the holding furnace (890°C) of the electromagnetic ultrasonic control twin-roll continuous casting and rolling device, start the stirring degassing system and the electromagnetic stirring system, with the help of the purity of 99.99% Ar gas, blown into the weighed and dried K from the degassing pipeline 2 ZrF 6 、K 2 TiF 6 、KBF 4 and Na 2 B 4 o 7 Mixing powders to generate nano-ZrB in situ with Al melt 2 、Al 2 o 3 、TiB 2 Ceramic particles, the total time f...

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Abstract

The invention relates to an aluminum-based composite material, in particular to a high-toughness high-thermal-conductivity easy-to-weld aluminum-based composite material for a 5G base station and a preparation method. Through chemical component design, in-situ nanoparticle strengthening, refining and rare earth microalloying technologies and a developed and designed electromagnetic ultrasonic regulation and control double-roller continuous casting and rolling device, a high-toughness high-thermal-conductivity and easy-to-weld aluminum-based composite material strip for the 5G base station is prepared. The composite material strip prepared by the technology is fine in grain, contains a nano rare earth precipitated phase in the grains and contains high-thermal-conductivity in-situ nano ceramic particles in the grain boundary, so that the room-temperature toughness and thermal conductivity of the alloy are remarkably improved; and the grain boundary content is increased due to the low-melting-point alloy component design and obvious grain refinement, therefore, the ply rolling cold weldability of the alloy strip is effectively improved.

Description

technical field [0001] The invention relates to an aluminum-based composite material, in particular to an aluminum-based composite material with high strength, toughness, high thermal conductivity and easy welding for 5G base stations and a preparation method thereof. Background technique [0002] With the development and application of the fifth-generation mobile communication technology (5G technology), the power consumption of the active antenna unit of the 5G base station is three times that of the 4G base station (a single unit reaches 1300W). Manufacturing requirements are also getting higher and higher. The current inflatable aluminum heat dissipation substrate is a new type of phase change efficient heat dissipation structure. The hollow aluminum plate shell is manufactured through flow channel printing, stacked cold welding, inflation molding and other processes, and then vacuum perfused through the phase change working medium. The substrate is prepared by welding ...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C21/02C22C1/10C22B9/02C22C1/03
CPCC22C21/00C22C21/02C22C1/1036C22B9/026C22C1/1052
Inventor 赵玉涛怯喜周彭艳杰陶然梁向锋陈刚
Owner JIANGSU UNIV
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