Preparation technology of aluminum intermediate alloy

The invention relates to an aluminum master alloy and a preparation process technology, which is applied in the field of aluminum master alloy preparation technology and can solve the problems of high cost, low efficiency, difficult melting and the like of the fusion method.

Inactive Publication Date: 2017-07-28
山东滨州华创金属有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high price of some metals such as metal scandium and scandium aluminum alloy, they are difficult to dissolve and easy to segregate during the fusion process; as ene

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1 (preparation of an aluminum-scandium alloy with a scandium content of 0.5%):

[0016] Add 100 kg of 99.7% (mass fraction, the same below) aluminum ingot into the induction furnace, melt it and raise the temperature to 660°C, add 5Kg of magnesium fluoride, 15Kg of sodium fluoroaluminate, 15Kg of potassium fluoroaluminate and 5Kg of potassium chloride After mixing into a mixture, put it into the material box of the automatic feeder, and then put it into the induction furnace through the automatic feeder, and then raise the temperature to raise the temperature of the aluminum water to 900°C. Mix 1.2 Kg of scandium chloride and 0.6Kg of scandium oxide and add it to the automatic feeder, and then put it into the induction furnace through the feeder box of the automatic feeder. After 15 minutes of reaction, it becomes an alloy, and the alloy is sampled for testing. After the scandium content is qualified, the alloy is poured out. After pouring the molten salt on the...

Embodiment 2

[0017] Embodiment 2 (preparation of an aluminum-scandium alloy with a scandium content of 0.5%):

[0018] Add 100 kg of 99.7% aluminum ingot into the induction furnace, melt it and raise the temperature to 850 °C, mix 5Kg magnesium fluoride, 10 Kg sodium fluoroaluminate, 20 Kg potassium fluoroaluminate and 5Kg potassium chloride to form a mixture , into the feeder box of the automatic feeder, and then into the induction furnace through the automatic feeder, and then heat up to raise the temperature of the aluminum water to 750°C. Add 2.5 Kg of scandium chloride into the automatic feeder, and then feed it into the induction furnace through the feeder box of the automatic feeder. After reacting for 120 minutes, it becomes an alloy. The alloy is sampled for testing. After the scandium content is qualified, pour out the molten salt on the surface of the alloy, pour After finishing, add 0.4 kg of slag-forming agent to clean the remaining molten salt on the surface of the alloy; 10...

Embodiment 3

[0019] Embodiment three (preparation of aluminum-scandium alloy with a scandium content of 0.5%):

[0020] Add 100 kg of 99.7% aluminum ingot to the induction furnace, melt it and raise the temperature to 750°C, mix 5 Kg of magnesium fluoride, 20 Kg of sodium fluoroaluminate, 10Kg of potassium fluoroaluminate and 5Kg of potassium chloride to form a mixture , into the feeder box of the automatic feeder, and then into the induction furnace through the automatic feeder, and then heat up to raise the temperature of the aluminum water to 1000°C. Add 1.2Kg of scandium oxide into the automatic feeder, and then feed it into the induction furnace through the feeder box of the automatic feeder. After reacting for 120 minutes, it becomes an alloy. The alloy is sampled for testing. After the scandium content is qualified, pour out the molten salt on the surface of the alloy, and the pouring is complete. Finally, add 0.5 kg of slagging agent to clean the remaining molten salt on the surfac...

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PUM

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Abstract

The invention relates to the field of synthesis of aluminum intermediate alloys, in particular to a preparation technology of an aluminum intermediate alloy. According to the preparation technology of the aluminum intermediate alloy, aluminum ingots are fed into an electric induction furnace and molten, and the temperature of the molten aluminum is raised to 660-850 DEG C; then, magnesium fluoride, sodium hexafluoroaluminate, potassium hexafluoroaluminate and potassium chloride are mixed into a mixture, the mixture is fed into the electric induction furnace, and the temperature is raised to 750-1000 DEG C; one or two of scandium oxide and scandium chloride are added into the electric induction furnace to a reaction, and after the reaction is qualified, a slagging former is added to remove remaining fused salt on the surface of the alloy; the temperature of the alloy is kept at 760-900 DEG C, a rotating exhauster is used for feeding argon to conduct refining degassing; and then, the slagging former is added for secondary slagging treatment. By the adoption of the preparation technology of the aluminum intermediate alloy, the electric induction furnace is utilized, the chloride and the fluoride are mixed and then added to high-temperature molten aluminum with the surface covered with fused salt, the aluminum-scandium alloy is directly generated, and the problems that when the aluminum-scandium alloy is prepared through a mix-melting method, cost is high, the energy consumption is high, time is long, efficiency is low, and the quality is not stable are solved.

Description

[0001] (1) Technical field [0002] The invention relates to the field of synthesis of aluminum master alloys, in particular to a preparation process of aluminum master alloys. [0003] (2) Background technology [0004] The traditional preparation process of aluminum alloy is the method of blending, which mainly uses metal aluminum and metal element or high-content aluminum intermediate alloy as raw materials for high-temperature fusion. However, due to the high price of some metals such as metal scandium and scandium aluminum alloy, they are difficult to dissolve and easy to segregate during the fusion process; as energy prices continue to rise, the fusion method has high cost, high energy consumption, long time and low efficiency. Problems such as instability and quality are becoming more and more prominent. [0005] (3) Contents of the invention [0006] In order to make up for the defects of the prior art, the invention provides a process for preparing an aluminum master...

Claims

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Application Information

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IPC IPC(8): C22C1/03C22C1/06
CPCC22C1/03C22C1/026C22C1/06
Inventor 高希柱冯增建卞金涛李佳刘延涛苑吉东
Owner 山东滨州华创金属有限公司
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