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A kind of compound refining method of magnesium alloy

A composite refining and magnesium alloy technology, applied in the field of alloy refining, can solve the problems of solvent slag inclusion, difficult operation, high refining labor intensity, and achieve the effects of reducing refining cost, improving refining quality and preventing combustion.

Active Publication Date: 2017-08-25
贵州航天风华精密设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the above-mentioned technical problems, the present invention provides a composite refining method for magnesium alloys, which solves a series of problems such as the difficulty in operation of the current magnesium alloy method, high refining labor intensity, unstable refining effect, easy occurrence of solvent slag inclusion, inability to degas, etc. problem, realize the combined refining of argon and solvent

Method used

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  • A kind of compound refining method of magnesium alloy

Examples

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Effect test

Embodiment 1

[0021] This embodiment provides a magnesium alloy ZM5 alloy consistent refining method; figure 1 The apparatus shown was carried out as follows:

[0022] 1) Put the thoroughly baked ZM5 alloy ingot into the furnace to melt, put it into a crucible (not marked in the figure), and after undergoing modification treatment at 720°C to 740°C, use a skimmer to remove the surface slag layer and spread a layer evenly No. 2 solvent is kept warm and left standing.

[0023] 2) Insert the air outlet end of the dried air guide tube (4) into the carnallite solution for washing, and then connect the washed air guide tube (4) to the air guide hose (3).

[0024] 3) Open the valve (1) of the argon gas supply system first, and then adjust the flow meter (2) until the argon gas flow rate is 1.2L / min~1.6L / min. Insert the air guide tube obliquely to a depth of 150-200mm from the bottom of the crucible.

[0025] 4) Turn on the solvent quantitative supply device (5) to keep the amount of solvent on ...

Embodiment 2

[0033] This embodiment provides a magnesium alloy ZM6 alloy consistent refining method; figure 1 The apparatus shown was carried out as follows:

[0034] 1) Melt the thoroughly baked ZM6 alloy ingot in a furnace, put it into a crucible, use a skimmer to remove the slag layer on the surface and sprinkle a layer of solvent evenly, and adjust the temperature to 740°C to 760°C to stand still.

[0035] 2) Insert the air outlet end of the dried air guide tube (4) into the carnallite solution for washing, and then connect the washed air guide tube (4) to the air guide hose (3).

[0036] 3) Open the valve (1) of the argon gas supply system first, and then adjust the flow meter (2) to a flow rate of 2.0L / min to 2.5L / min. Insert the air guide tube obliquely to a depth of 150-200mm from the bottom of the crucible.

[0037] 4) Turn on the solvent quantitative supply device (5) to keep the amount of solvent on the surface of the crucible constant, adjust the given rate of solvent to 150g...

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Abstract

The invention provides a magnesium alloy composite refining method and belongs to the technical field of refining technologies. By means of the magnesium alloy composite refining method, gas shielding, solvent protecting, gas refining and solvent refining are combined, and the defects that the operation difficulty of a 'lower portion solvent method' is large, the refining labor intensity is high, the refining effect is unstable, solvent slag inclusions are liable to produce, and degassing cannot be conducted are overcome. A two-stage refining mode is put forward, that is, the refining process is conducted by being divided into two stages, the refining depth, the refining time, the gas flow and the solvent flow which are adopted in the two stages are all different; accordingly, the refining quality is improved, and the refining cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of alloy refining, and in particular relates to a magnesium alloy composite refining method. Background technique [0002] Due to the characteristics of easy combustion and oxidation of magnesium alloys, refining treatment is required, and the existing refining equipment and refining methods for aluminum alloys cannot be applied to the refining of magnesium alloys. At present, the "lower solvent method" is used for magnesium alloy refining. Using a stirring spoon to carry out bottom stirring and refining requires the operator to have high operating skills, and the labor intensity is very high. The refining effect is greatly affected by the operator, and the stirring stability is poor. Defects such as solvents and oxidized slag inclusions are prone to occur, and the quality of the solution is difficult to guarantee. Simultaneously, adopt the method for refining with refining spoon to still can't reach the ef...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/06C22C23/00
CPCC22C1/06C22C23/00
Inventor 李翔光
Owner 贵州航天风华精密设备有限公司
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