Preparation method of composite refining agent of aluminum alloy

A technology of compound refining agent and aluminum alloy, applied in the field of refining agent, can solve the problems of casting defects, aluminum and its alloys are easily oxidized, etc., and achieve the effects of low surface tension, low hygroscopicity, and easy storage.

Inactive Publication Date: 2018-12-21
FOSHAN CHAOHONG NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention: Aiming at the problem that aluminum and its alloys are easy to be oxidized and absorb gas, which makes gas and inclusions easy to form in molten aluminum, and then cause defects in castings, a composite refining of aluminum alloy is provided. The preparation method of the agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] In parts by weight, weigh 30 parts of NaCl, 20 parts of KCl, 6 parts of NaF, and 10 parts of CaF 2 , 7 parts of MgCl 2 , 6 copies of C 2 Cl 6 , 5 Na 2 SiF 6 , 5 Na 3 AlF 6 , 8 NaNO 3 , 4 parts of ZnCl 2 , 3 parts of succinic acid, 2 parts of triethanolamine, ZnCl 2 , succinic acid and triethanolamine are evenly mixed to obtain a filler; the C 2 Cl 6 and Na 2 SiF 6 Mix evenly to obtain a mixture, place the mixture in a vacuum granulator, press and granulate at a pressure of 10 MPa and a rotation speed of 10 r / min to obtain mixed granules; NaCl, KCl, NaF, CaF 2 , MgCl 2 、C 2 Cl 6 、Na 3 AlF 6 and NaNO 3 Mix and place on a ball mill. The ball-to-material ratio is 8:1. Steel balls are used as the grinding balls. The diameter of the steel balls is 6 mm. The ball mills for 6 hours at a speed of 300 r / min, and passes through a 100-mesh sieve to obtain a blend; The blend, the mixed particles and the filler were mixed according to a mass ratio of 1:0.5:0.3, and...

example 2

[0020] In parts by weight, weigh 35 parts of NaCl, 24 parts of KCl, 8 parts of NaF, and 13 parts of CaF 2 , 10 parts of MgCl 2 , 8 copies of C 2 Cl 6 , 7 Na 2 SiF 6 , 7 Na 3 AlF 6 , 11 NaNO 3 , 7 parts of ZnCl 2 , 7 parts of succinic acid, 4 parts of triethanolamine, ZnCl 2 , succinic acid and triethanolamine are evenly mixed to obtain a filler; the C 2 Cl 6 and Na2 SiF 6 Mix evenly to obtain a mixture, place the mixture in a vacuum granulator, press and granulate at a pressure of 15 MPa and a rotating speed of 15 r / min to obtain mixed granules; NaCl, KCl, NaF, CaF 2 , MgCl 2 、C 2 Cl 6 、Na 3 AlF 6 and NaNO 3 Mix and place on a ball mill, the ball-to-material ratio is 8:1, steel balls are used as the grinding balls, the diameter of the steel balls is 8mm, ball milling is carried out at a speed of 350r / min for 7 hours, and the mixture is passed through a 125-mesh sieve; The blend, the mixed particles and the filler were mixed at a mass ratio of 1:0.5:0.3, and s...

example 3

[0022] In parts by weight, weigh 40 parts of NaCl, 28 parts of KCl, 11 parts of NaF, and 16 parts of CaF 2 , 14 parts of MgCl 2 , 10 copies of C 2 Cl 6 , 10 parts of Na 2 SiF 6 , 10 parts of Na 3 AlF 6 , 14 NaNO 3 , 9 parts of ZnCl 2 , 10 parts of succinic acid, 6 parts of triethanolamine, ZnCl 2 , succinic acid and triethanolamine are evenly mixed to obtain a filler; the C 2 Cl 6 and Na 2 SiF 6 Mix evenly to obtain a mixture, place the mixture in a vacuum granulator, press to form and granulate at a pressure of 20 MPa and a rotating speed of 20 r / min to obtain mixed granules; NaCl, KCl, NaF, CaF 2 , MgCl 2 、C 2 Cl 6 、Na 3 AlF 6 and NaNO 3 Mix and place on a ball mill, the ball-to-material ratio is 8:1, steel balls are used as the grinding balls, the diameter of the steel balls is 10mm, ball milling is carried out at a speed of 400r / min for 8 hours, and the mixture is passed through a 150-mesh sieve; The blend, the mixed particles and the filler were mixed a...

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Abstract

The invention relates to a preparation method of a composite refining agent of an aluminum alloy, and belongs to the technology field of refining agent. The composite refining agent of the aluminum alloy prepared by the invention comprises chloride, fluoride and nitrate, wherein the chloride is the main component of the refining agent with high hygroscopicity; sodium chloride and potassium chloride have good coverage performance and are the basis of the refining agent; hexachloroethane is easy to store, easy to use, has a good purifying effect, and has a grain refining effect; since the loosehexachloroethane and aluminum alloy liquid will react violently, the hexachloroethane and sodium fluorosilicate are pressed together and granulated to improve the purification effect of the hexachloroethane; sodium fluoride can cause the oxide film to mechanically fall off and dissolve in the solvent, thereby playing a purifying function ; the addition of fluoride in the refining agent has an effect of adsorbing and dissolving aluminum oxide; the fluoride accelerates the process of adsorbing hydrogen and inclusions in an aluminum liquid by the refining agent, promotes the migration of the inclusions to the interface and improves the efficiency of the inclusion removal.

Description

technical field [0001] The invention relates to a preparation method of an aluminum alloy composite refining agent, belonging to the technical field of refining agents. Background technique [0002] Among various casting alloys, aluminum alloy has a series of characteristics such as light specific gravity, high specific strength, high corrosion resistance, high electrical conductivity, good decoration and formability. These properties of aluminum and its alloys make it not only used in military and heavy industries , Transportation is widely used. And it also has a high status as a structural material and daily necessities. Therefore, the society has increasingly stringent requirements on the product quality of aluminum and its alloys, especially in aerospace, aviation and electronic industry technologies. Aluminum is the second most used metal after steel in industrial applications. [0003] The gas content and inclusion content in aluminum and its alloy melts directly a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C1/02
Inventor 刘菊花张鑫骆兵建
Owner FOSHAN CHAOHONG NEW MATERIAL TECH CO LTD
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