Electrolytic aluminum liquid microalloyed hexabasic intermediate alloy and preparation and use method thereof

A technology of master alloy and electrolytic aluminum liquid, applied in the field of alloy materials, can solve problems such as undiscovered, and achieve the effect of effective micro-alloying

Inactive Publication Date: 2013-03-06
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In short, compared with the aluminum alloy melt, no master alloy has been found to play an effective composite role in the purification and microalloying of electrolytic aluminum liquid. Therefore, a master alloy for purifying and microalloying electrolytic aluminum liquid is

Method used

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preparation example Construction

[0023] Alloy preparation method of the present invention comprises the following steps:

[0024] (1) Prepare high-purity aluminum and Sc according to the mass fraction of the master alloy 2 o 3 powder, molten salt system, high-purity zirconium sponge powder, high-purity titanium sponge powder, high-purity hafnium powder, metal lanthanum block, covering agent; among them, Sc 2 o 3 The mass percentage of hafnium powder is 1%-6%, the mass percentage of high-purity aluminum is 60%-70%, the mass percentage of molten salt system is 22%-29%, the mass percentage of hafnium powder is 1%-6%, sponge zirconium The mass percentage of powder is 1%-5%, the mass fraction of titanium sponge is 0.1%-3%, and the mass fraction of metal lanthanum block is 6%-12%;

[0025] (2) will Sc 2 o 3 , high-purity aluminum, and molten salt system are subjected to aluminothermic reduction at a temperature of 950°C to 980°C, and heat preservation;

[0026] (3) Wrap the Hf powder with aluminum foil an...

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Abstract

The invention discloses electrolytic aluminum liquid microalloyed hexabasic intermediate alloy and a preparation and use method thereof. The electrolytic aluminum liquid microalloyed hexabasic intermediate alloy comprises the following components in percentage by mass: 1-6 percent of Sc, 1-5 percent of Zr, 0.1-3 percent of Ti, 1-6 percent of Hf, 6-12 percent of La and balance of aluminum. The preparation method comprises the following steps of: 1) well preparing high-purity aluminum, Sc2O3 powder, a fused salt system, high-purity sponge zirconium powder, high-purity sponge titanium powder, high-purity hafnium powder, metal lanthanum blocks and covering agents according to the mass percent of the components of the intermediate alloy; 2) conducting aluminothermic reduction to the Sc2O3 powder, the high-purity aluminum and the fused salt system at 950-980DEG C and preserving heat; 3) wrapping the hafnium powder by using an aluminum foil, adding the hafnium powder into aluminum liquid, agitating the mixture, heating the mixture to 1150 plus or minus 20DEG C and preserving heat; and 4) slagging off, taking and pouring alloy solution into a new crucible for continuous smelting, heating the alloy solution to 970 plus or minus 20DEG C, adding the sponge zirconium powder, the sponge titanium powder and the metal lanthanum blocks, adding the covering agents, preserving heat, conducting high-intensity ultrasonic treatment, conducting refining, degassing and deslagging, pouring the obtained alloy liquid in an iron mold and obtaining an intermediate alloy cast ingot after cooling.

Description

technical field [0001] The invention relates to the field of alloy materials, in particular to a six-component master alloy microalloyed with electrolytic aluminum liquid and a preparation and use method thereof. Background technique [0002] my country's aluminum industry presents the characteristics of the separation of electrolytic aluminum industry and aluminum processing industry. The existing aluminum forming technology cannot use high-temperature electrolytic aluminum to directly form semi-finished products, but cast electrolytic aluminum liquid into remelted aluminum ingots, and then melt the aluminum ingots It is molten aluminum and cast into various round ingots, square ingots and strip blanks. The long-process aluminum alloy processing technology using remelted aluminum ingots has many problems such as complex procedures, long process, high energy consumption, serious pollution, and low yield. Therefore, it is of great significance to develop a short-process techn...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C1/03C22C21/00
Inventor 赵明吴晚云卢光华李婷婷铁军屈敏
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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