Dehydrogenation method for aluminum or aluminum alloy fused mass by using solid-state proton conductor and device thereof

A technology for aluminum alloy melts and proton conductors, applied in the field of dehydrogenation of aluminum or aluminum alloy melts with solid proton conductors and its devices, can solve problems such as the dehydrogenation of metal melts that have not been reported, and achieve industrial production, The effect of simple equipment and no pollution to the environment

Inactive Publication Date: 2008-07-09
NORTHEASTERN UNIV
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  • Dehydrogenation method for aluminum or aluminum alloy fused mass by using solid-state proton conductor and device thereof
  • Dehydrogenation method for aluminum or aluminum alloy fused mass by using solid-state proton conductor and device thereof

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Embodiment Construction

[0026] Example 1: As shown in Figures 1 and 2, a solid-state proton conductor is used to dehydrogenate aluminum or aluminum alloy melts. It is composed of a heating furnace using a resistance wire furnace, and a corundum gasket is installed on the bottom of the furnace. 2. The aluminum melting tank 3 used for melting aluminum or aluminum alloy, choose graphite crucible and put it on the corundum gasket 2, add a graphite cover 4 on the resistance wire furnace, through the hole on the graphite cover 4, put the solid electrolyte The tube 5 and the electrode lead wire 7a with the corundum tube protective sleeve 6a are selected from Ni-Cr wire and inserted into the aluminum melting tank 3, and the electrode lead wire 7b and the electrode lead wire 7a in the solid electrolyte tube 5 are respectively connected to the contacts of the external power switch 9; Hydrogen sensor 8 (being prior art, patent application number is disclosed in 207100117123) and another electrode lead wire 7c th...

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Abstract

The invention relates to a dehydrogenation process for aluminum or aluminum alloy flux through utilizing solid proton conductor and a device. The device comprises an aluminum-smelting channel, a heating-furnace, temperature-controlling thermocouple and a hydrogen-testing sensor. The key points lie in that a hydrogen extraction device is formed by the mutual connection of a proton conductor pipe, an alumina pipe and a metal pipe, by a contact conductor which is assembled in the hydrogen extraction device and an another contact conductor with alumina pipe protective sleeve connecting with an external power switch. The proton conductor chooses chemical formula of BaCe 1-XYXO3-a or BaCe1-XSmxO3-a, wherein X is equal to 0.05-0.25 or is made from CaZr 0.9 In 0.1O3-a material. The dehydrogenation process adopts short-circuit dehydrogenation under the stirring condition of aluminum or aluminum alloy flux temperature is 750-800 DEG C, or adopts the combination carrying or vacuum extraction hydrogenation after short-circuit hydrogenation or adopts applied voltage to hydrogenate. The hydrogenation effects of the invention are that the content of hydrogen is smaller 0.15ml/100gAl, and the content of hydrogen is smaller 0.12ml/100Al for high strength aluminum alloy flux. The invention has the advantages of simple technology and device, convenient operation, environment-friendly and less investment, which is easy to realize industrialization.

Description

technical field [0001] The invention relates to a method and device for dehydrogenating aluminum or aluminum alloy melts, in particular to a method and device for dehydrogenating aluminum or aluminum alloy melts with a solid proton conductor. Background technique [0002] Hydrogen is a harmful impurity in aluminum. The solubility of hydrogen in molten aluminum and aluminum alloy drops sharply when the melt solidifies, and it precipitates in the form of hydrogen molecules, causing the aluminum to form defects such as pores, loose structure, and white spots, and to reduce the strength, plasticity, impact toughness, and fracture toughness of the product. decrease, resulting in serious consequences. Therefore, dehydrogenation of aluminum and aluminum alloys is a problem that must be solved in the production of aluminum and aluminum alloys. [0003] At present, the common aluminum and aluminum alloy dehydrogenation technology is to blow inert gas Ar gas into the aluminum liquid...

Claims

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Application Information

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IPC IPC(8): C22B21/06
Inventor 王常珍厉英刘春明
Owner NORTHEASTERN UNIV
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