Electromagnetic treatment process for high-performance cast aluminum alloy intermediate melt

A technology of casting aluminum alloy and processing technology, applied in the field of aluminum alloy, can solve problems such as difficulty in achieving technical effects, and achieve the effects of changing metal solidification behavior, strengthening alloying effect, and improving comprehensive performance

Inactive Publication Date: 2020-08-21
汪晓难
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above technologies realize the application of electromagnetic field by applying current in a single load coil, but due to the skin effect of electromagnetic in the metal melt to be treated, in order to achieve the technical effect, it is necessary to apply a large current in the load coil, even so , it is often difficult to achieve the desired technical effect when a large volume of melt is solidified

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A high-performance cast aluminum alloy intermediate melt electromagnetic treatment process is characterized in that it includes the following steps:

[0031] Step S1, smelting: mix the aluminum alloy raw materials evenly, then grind them into powder, pass through a 100-mesh sieve, and then dry to dryness to obtain aluminum alloy raw material powder, and then put the aluminum alloy raw material powder into a melting furnace for smelting, The melt is stirred with an electromagnetic stirrer to ensure the composition and temperature uniformity of the alloy melt. After stirring evenly, the melt is pre-refined with carbon tetrachloride to reduce the non-metallic slag content, hydrogen content and alkali metal content in the melt. content;

[0032] Step S2, preparation of the intermediate melt of cast aluminum alloy: the smelted product produced in step S1 is put into the standing furnace from the melting furnace for secondary refining and degassing treatment, and a refining a...

Embodiment 2

[0047] A high-performance cast aluminum alloy intermediate melt electromagnetic treatment process is characterized in that it includes the following steps:

[0048] Step S1, smelting: Mix the aluminum alloy raw materials evenly, then grind them into powder, pass through a 130-mesh sieve, and then dry to dryness to obtain aluminum alloy raw material powder, and then put the aluminum alloy raw material powder into a melting furnace for smelting, The melt is stirred with an electromagnetic stirrer to ensure the composition and temperature uniformity of the alloy melt. After stirring evenly, the melt is pre-refined with carbon tetrachloride to reduce the non-metallic slag content, hydrogen content and alkali metal content in the melt. content;

[0049] Step S2, preparation of the intermediate melt of cast aluminum alloy: put the smelted product produced in step S1 from the melting furnace into the static furnace for secondary refining and degassing treatment, add a refining agent ...

Embodiment 3

[0063] A high-performance cast aluminum alloy intermediate melt electromagnetic treatment process is characterized in that it includes the following steps:

[0064] Step S1, smelting: mix the aluminum alloy raw materials evenly, then grind them into powder, pass through a 150-mesh sieve, and then dry to dryness to obtain aluminum alloy raw material powder, then put the aluminum alloy raw material powder into a melting furnace for smelting, The melt is stirred with an electromagnetic stirrer to ensure the composition and temperature uniformity of the alloy melt. After stirring evenly, the melt is pre-refined with carbon tetrachloride to reduce the non-metallic slag content, hydrogen content and alkali metal content in the melt. content;

[0065] Step S2, preparation of the intermediate melt of cast aluminum alloy: put the smelted product produced in step S1 from the melting furnace into the standing furnace for secondary refining and degassing treatment, add a refining agent wh...

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Abstract

The invention discloses an electromagnetic treatment process for high-performance cast aluminum alloy intermediate melt. The process is characterized by comprising the following steps of S1, smelting;S2, preparing cast aluminum alloy intermediate melt; S3, carrying out different frequency electromagnetic treatment; S4, carrying out ultrasonic wave and microwave treatment; S5, carrying out stablemagnetic field treatment; and S6, carrying out heat treatment. According to the electromagnetic treatment process for the high-performance cast aluminum alloy intermediate melt, the process flow is short, the cost is low, the alloying effect can be enhanced, the strength, hardness and corrosion resistance of the aluminum alloy material are improved, the tissue refinement and homogenization effectof the blank is improved, the macroscopic segregation degree is reduced, the columnar crystal region in the cast blank is reduced or eliminated, and therefore the excellent comprehensive mechanical performance is obtained.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to an electromagnetic treatment process for intermediate melts of high-performance cast aluminum alloys. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in the industry. It has low density, high tensile strength, high elongation, good fatigue strength, excellent electrical conductivity, thermal conductivity and corrosion resistance, and is widely used in Aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. Nevertheless, with the increase of international competitiveness, the high-end equipment manufacturing industry in developed countries has put forward higher requirements for high-performance aluminum alloy products such as high temperature resistance, fatigue resistance, and high safety, making more than 80% of my country's export aluminum Alloy products can only be used as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C1/02C22C21/14
CPCC22C1/026C22C1/06C22C21/14
Inventor 汪晓难
Owner 汪晓难
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