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Preparation method of efficient aluminum alloy refining agent

A refining agent and aluminum alloy technology, which is applied in the field of high-efficiency aluminum alloy refining agent preparation, can solve the problems affecting the quality of aluminum alloy and general impurity removal effect, etc., and achieve the effect of improving quality, improving effect and ensuring high efficiency

Pending Publication Date: 2021-07-16
徐州立伟铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aluminum alloys need to use refining agents to remove impurities during the processing of aluminum alloys. The existing refining agents have a general effect of removing impurities in the process of aluminum alloy processing, and poor removal effects will affect the quality of aluminum alloys in the later stage. Therefore, we propose a Preparation method of aluminum alloy high-efficiency refining agent

Method used

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Effect test

preparation example Construction

[0026] The invention provides a technical solution: a preparation method of an aluminum alloy high-efficiency refining agent, a preparation method of an aluminum alloy high-efficiency refining agent, which is characterized in that: the raw materials are as follows: 20-30 parts of sodium chloride, 30-40 parts of potassium chloride 6-10 parts of aluminum fluoride, 4-10 parts of sodium hexafluoroaluminate, 2-7 parts of sodium fluorosilicate, 0.2-0.5 parts of rubidium fluoride, 0.5-1 part of lanthanum fluoride, 10 parts of magnesium nitride -30 copies;

[0027] The preparation method is as follows:

[0028] Step A: Introduce quantitative sodium chloride powder, potassium chloride powder, aluminum fluoride powder, sodium hexafluoroaluminate powder, sodium fluorosilicate powder, rubidium fluoride powder, lanthanum fluoride powder, and magnesium nitride powder Mix and stir in a blender to obtain a mixture;

[0029] Step B: Pour the mixture into dehydration equipment for dehydration...

Embodiment 1

[0039] The liquid ammonia is introduced into the stirring equipment for stirring, and then the magnesium powder is introduced into the liquid ammonia during the stirring process for reaction; the reaction temperature is 600°C, the reaction time is 1h, and nitrogen gas is passed into the reacted magnesium powder and liquid ammonia for another Reaction, the reaction temperature is 800°C, the reaction time is 1h, and the mixture is obtained after the reaction is sufficient; the mixture is purified by the purification equipment to obtain high-quality magnesium nitride powder; the magnesium nitride powder is filtered to obtain fine magnesium nitride powder That is, then 17 parts of magnesium nitride powder and 30 parts of sodium chloride powder, 40 parts of potassium chloride powder, 6 parts of aluminum fluoride powder, 4 parts of sodium hexafluoroaluminate powder, 2 parts of sodium fluorosilicate powder , 0.5 parts of rubidium fluoride powder, and 0.5 parts of lanthanum fluoride po...

Embodiment 2

[0041] The liquid ammonia is introduced into the stirring equipment for stirring, and then the magnesium powder is introduced into the liquid ammonia during the stirring process for reaction; the reaction temperature is 600°C, the reaction time is 1h, and the mixture is obtained after the reaction is sufficient; the mixture is purified by the purification equipment React to obtain magnesium nitride powder; filter the magnesium nitride powder to obtain fine magnesium nitride powder, then mix 17 parts of magnesium nitride powder, 30 parts of sodium chloride powder, 40 parts of potassium chloride powder, 6 parts of fluorine Aluminum powder, 4 parts of sodium hexafluoroaluminate powder, 2 parts of sodium fluorosilicate powder, 0.5 part of rubidium fluoride powder, and 0.5 part of lanthanum fluoride powder are mixed and stirred to obtain a mixture, and the mixture is poured into a dehydration device for dehydration. The vacuum degree of dehydration is 0.2-0.8MPa. The dehydrated powd...

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Abstract

The invention discloses a preparation method of an efficient aluminum alloy refining agent. The efficient aluminum alloy refining agent comprises the following raw materials of 20-30 parts of sodium chloride, 30-40 parts of potassium chloride, 6-10 parts of aluminum fluoride, 4-10 parts of sodium hexafluoroaluminate, 2-7 parts of sodium fluosilicate, 0.2-0.5 part of rubidium fluoride, 0.5-1 part of lanthanum fluoride and 10-30 parts of magnesium nitride. According to the method, by adding the powdery magnesium nitride additive into the refining agent, in the impurity removal process, agglomerated inclusions are dispersed and can be adsorbed, dissolved and crushed by the refining agent, and in the process, nitrogen generated by the reaction of magnesium nitride and oxidized impurities can effectively adsorb aluminum oxide impurities and take away hydrogen in a solution; and the refining agent with added magnesium nitride is a purification mechanism of cooperative action of adsorption diffusion, dissolution reaction and bubble floating, and the impurity removal rate can be effectively increased to 80% by adding the magnesium nitride, so that the refining effect of the refining agent can be effectively improved, and the aluminum alloy refining quality is ensured.

Description

technical field [0001] The invention relates to the field of refining agents, in particular to a method for preparing an aluminum alloy high-efficiency refining agent. 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 industrial economy, the demand for aluminum alloy welded structural parts is increasing, so that the research on the weldability of aluminum alloy is also in-depth. The density of aluminum alloy is low, but the strength is relatively high, close to or exceeding high-quality steel, good plasticity, and can be processed Formed into various profiles, it has excellent electrical conductivity, thermal conductivity and corrosion resistance. It is widely used in industry, and its usage is second only to steel. The deformed aluminum alloy can withstan...

Claims

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Application Information

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IPC IPC(8): C22B1/06C22B9/10
CPCC22B1/06C22B9/106
Inventor 毕雪珍
Owner 徐州立伟铝业有限公司
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