Lightweight aluminum-lithium alloy material and production method thereof.

A technology of aluminum-lithium alloy and production method, applied in the field of light-weight aluminum-lithium alloy material and its production, to achieve the effects of low cost, high specific strength and specific stiffness, and low density

Active Publication Date: 2014-09-03
SUZHOU RICHMOND ADVANCED MATERIAL TECH TRANSFER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Weldalite alloys including Weldalite TM 049 and 210 two alloy series, of which Weldalite TM 210 alloy has high weldability, and its chemical composition and related properties are in line with the application of aerospace structural materials. It is a generally recognized material at this stage, but because it improves the welding performance of the material by adding silver (Ag), Therefore, the corresponding cost of aluminum-lithium alloy is also increased

Method used

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  • Lightweight aluminum-lithium alloy material and production method thereof.
  • Lightweight aluminum-lithium alloy material and production method thereof.
  • Lightweight aluminum-lithium alloy material and production method thereof.

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Effect test

Embodiment 1

[0024] Embodiment 1, the preparation of aluminum-lithium alloy material of the present invention

[0025] Batching smelting: The mass ratio of the prepared metal raw materials is lithium 4wt%, copper: 3wt%, tin: 0.1wt%, zinc: 1.5wt%, lead: 0.05wt%, unavoidable impurities are less than or equal to 0.2wt%, and the remaining The amount is the ratio of aluminum into the melting furnace, the temperature of the melting furnace is 750 ° C, and the time is 2 hours.

[0026] Detection: Spectroscopic analysis is used to detect the smelted alloy liquid to ensure that its composition is within the range.

[0027] Casting cold billet: adopt continuous casting method, use computer to control AC motor, realize micro-pitch reverse push process, produce large roll and heavy strip billet, mill the skin defects of strip billet through double-sided milling and milling unit, and pass through cold rolling mill , cut into rough round ingots with a diameter of 20-50mm and a length of 3-4 meters.

...

Embodiment 2

[0034] Embodiment 2, the preparation of aluminum-lithium alloy material of the present invention

[0035] Batching smelting: The mass ratio of the prepared metal raw materials is lithium 5wt%, copper: 1.5wt%, tin: 0.4wt%, zinc: 1wt%, lead: 0.05wt%, unavoidable impurities are less than or equal to 0.2wt%, and the remaining The ratio of the amount of aluminum is put into the smelting furnace, the temperature of the smelting furnace is 800° C., and the time is 1.5 hours.

[0036] Detection: Spectroscopic analysis is used to detect the smelted alloy liquid to ensure that its composition is within the range.

[0037] Casting cold billet: adopt continuous casting method, use computer to control AC motor, realize micro-pitch reverse push process, produce large roll and heavy strip billet, mill the skin defects of strip billet through double-sided milling and milling unit, and pass through cold rolling mill , cut into rough round ingots with a diameter of 20-50mm and a length of 3-4 ...

Embodiment 3

[0044] Embodiment 3, the preparation of aluminum-lithium alloy material of the present invention

[0045] Batch smelting: The mass ratio of the prepared metal raw materials is lithium 4.5wt%, copper: 2.5wt%, tin: 0.3wt%, zinc: 0.8wt%, lead: 0.75wt%, unavoidable impurities are less than or equal to 0.2wt% , the balance is the proportion of aluminum and put it into the melting furnace, the temperature of the melting furnace is 750 ℃, and the time is 1.5 hours.

[0046] Detection: Spectroscopic analysis is used to detect the smelted alloy liquid to ensure that its composition is within the range.

[0047] Casting cold billet: adopt continuous casting method, use computer to control AC motor, realize micro-pitch reverse push process, produce large roll and heavy strip billet, mill the skin defects of strip billet through double-sided milling and milling unit, and pass through cold rolling mill , cut into rough round ingots with a diameter of 20-50mm and a length of 3-4 meters.

...

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Abstract

The invention relates to a lightweight aluminum-lithium alloy material and a production method thereof. The aluminum-lithium alloy material disclosed by the invention comprises the following components in percentage by weight: 4-6.5wt% of lithium, 0.5-3wt% of copper, 0.1-0.5wt% of tin, 0.8-1.5wt% of zinc, 0.05- 0.1wt% of lead and less than or equal to 0.2wt% of inevitable impurities and the balance of aluminum. The aluminum-lithium alloy material disclosed by the invention has the advantages of lower density, light weight, low anisotropy, high weldability, high strength and significantly reduced manufacturing cost. The aluminum-lithium alloy material disclosed by the invention can be widely used in aircraft connectors, machinery manufacturing, transportation machinery, power machinery and other aviation industry.

Description

technical field [0001] The invention relates to an aluminum-lithium alloy material and a production method thereof, in particular to an aluminum-lithium alloy material with low anisotropy, weldability and high strength and a production method thereof. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in industry, and has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. With the rapid development of science and technology and industrial economy in recent years, the demand for high-strength aluminum alloy welded structural parts is increasing. [0003] Due to the low density of aluminum alloy, but relatively high strength, close to or exceeding high-quality steel, good plasticity, can be processed into various profiles, with excellent electrical conductivity, thermal conductivity and corrosion resistance, it is widely used in industry, and its usage is seco...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22F1/04
Inventor 孙飞赵勇
Owner SUZHOU RICHMOND ADVANCED MATERIAL TECH TRANSFER CO LTD
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