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Magnesium-lithium alloy and manufacture method thereof

A magnesium-lithium alloy and manufacturing method technology, applied in the field of non-ferrous metals, can solve the problems of low impurity content, high cost, and difficulty in large-scale production, and achieve the effects of low impurity content, reduced smelting costs, and qualified components

Inactive Publication Date: 2007-03-07
苏州有色金属研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an ultra-light magnesium-lithium alloy and its manufacturing method, adopting non-vacuum melting technology, aiming at effectively reducing the melting cost of magnesium-lithium alloy and optimizing the process; the burning loss rate of melting is small, and the impurity content is low, which completely solves the problem. The disadvantages of high cost and difficulty in large-scale production of vacuum smelting

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Ultra-light magnesium-lithium alloy non-vacuum smelting technology, put LiCl / LiF accounting for 25Wt% of the furnace charge into a manganese steel crucible, heat it to 600°C, add pure magnesium ingots, and heat up to 700°C; after the pure magnesium is melted, the temperature rises to 730°C, add high-purity aluminum accounting for 3.5Wt% of the furnace charge metal and 1.2Wt% zinc, and stir; cool down to 680°C, press in high-purity lithium wrapped by aluminum foil with a bell jar (accounting for 2.6Wt% of the charge metal mass ), stir and stand at 680°C for 10 to 20 minutes; heat up to 690 to 700°C, and sprinkle CaF which accounts for 10Wt% of the charge metal on the covering agent 2 After making the covering agent into silk, remove the slag and cast.

[0029] Al

Embodiment 2

[0031] Ultra-light magnesium-lithium alloy non-vacuum smelting technology, put LiCl / LiF accounting for 25Wt% of the furnace charge into a manganese steel crucible, heat it to 600°C, add pure magnesium ingots, and heat up to 700°C; after the pure magnesium is melted, the temperature rises to 730°C, add high-purity aluminum accounting for 3.8Wt% of the charge metal and 1.1Wt% zinc, and stir; cool down to 680°C, press in high-purity lithium wrapped by aluminum foil with a bell jar (accounting for 9.25Wt% of the charge metal mass ), stir and stand at 680°C for 10 to 20 minutes; heat up to 690 to 700°C, and sprinkle CaF which accounts for 10Wt% of the charge metal on the covering agent 2 After making the covering agent into silk, remove the slag and cast.

[0032] Al

[0033] The above examples show that the technological process of the present invention is simple and easy to implement. According to the technological process of the present invention, the manganese cruci...

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PUM

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Abstract

The invention discloses an Mg-Li alloy and preparing method, which comprises the following steps: adopting 1-5wt% Al, 0.6-1.4wt% Zn, 1-10wt% Li, not more than 0.010wt% Fe and less than 0.001wt% Ni as raw material, adding LiCl / LiF covering agent in the manganese steel copple furnace; heating to 400-650 deg.c; adding pure magnesium; adding other alloys except Li at 690-730 deg.c; pressing pure Li cladded by aluminium foil in the fuse through bell jar under 660-720 deg.c; stirring; stewing for 10-20min; casting under 680-730 deg.c; obtaining the cast ingot.

Description

technical field [0001] The invention relates to a magnesium-lithium alloy, in particular to an ultra-light magnesium-lithium alloy and a manufacturing method thereof, belonging to the technical field of nonferrous metals. Background technique [0002] Magnesium alloy has the characteristics of light specific gravity, high specific strength, high damping, good electromagnetic shielding performance and good recyclability, so it is widely used in aerospace, aviation, communication, transportation, automobile, machinery and other fields. However, due to the difficulty of deforming magnesium alloy at room temperature, its deformation processing often needs to be performed at 200-500 °C. At present, magnesium alloy products are usually obtained by die-casting, but deformed magnesium alloys have better mechanical properties than die-cast magnesium alloys. Adding lithium element to magnesium alloy can greatly improve the deformation processing performance of the material, and at the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C1/02B22D21/02
Inventor 钟皓闫蕴琪陈琦张慧翁文凭
Owner 苏州有色金属研究院有限公司
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