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A kind of method for controlling vanadium aluminum alloy to produce oxide film

A vanadium-aluminum alloy and oxide film technology, applied in the metallurgical field, can solve the problems of increased production cost, prolonged production cycle, low powder recycling efficiency, etc., and achieves the effect of improving product qualification rate

Active Publication Date: 2020-09-08
HEBEI IRON AND STEEL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the shortcomings of both are that sandblasting and grinding the alloy surface increases the loss of the alloy, and the recovery and utilization efficiency of the powder produced by grinding is low; the secondary melting of the vacuum furnace prolongs the production cycle and increases the production cost

Method used

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  • A kind of method for controlling vanadium aluminum alloy to produce oxide film
  • A kind of method for controlling vanadium aluminum alloy to produce oxide film

Examples

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Effect test

Embodiment 1

[0025] In this embodiment, a method for controlling the generation of oxide films on vanadium-aluminum alloys uses electromagnetic coil heating to uniformly cool the high-temperature alloys to achieve the purpose of controlling the generation of oxide films on vanadium-aluminum alloys, which specifically includes the following steps:

[0026] (1) A heating device is designed on the outer layer of the furnace for smelting vanadium-aluminum alloy by the electric aluminothermic method, and it is assembled on the furnace body platform. The furnace body is placed in it during smelting. The diameter of the coil support is 3000mm, the diameter of the induction coil is 2500mm, and the power is 25kw;

[0027] (2) Mix vanadium pentoxide, aluminum particles, and slagging agent according to the mass ratio: aluminum particles: flake vanadium pentoxide = 0.92:1, slagging agent: flake vanadium pentoxide = 0.085:1 and mix evenly After that, it is added to the smelting furnace, and the electrod...

Embodiment 2

[0032] In this embodiment, a method for controlling the generation of oxide films on vanadium-aluminum alloys uses electromagnetic coil heating to uniformly cool the high-temperature alloys to achieve the purpose of controlling the generation of oxide films on vanadium-aluminum alloys, which specifically includes the following steps:

[0033] (1) A heating device is designed on the outer layer of the furnace for smelting vanadium-aluminum alloy by the electric aluminothermic method, and it is assembled on the furnace body platform. The furnace body is placed in it during smelting. The diameter of the coil support is 2800mm, the diameter of the induction coil is 2200mm, and the power is 23kw;

[0034] (2) Mix vanadium pentoxide, aluminum particles, and slagging agent according to the mass ratio: aluminum particles: flake vanadium pentoxide = 0.92:1, slagging agent: flake vanadium pentoxide = 0.085:1 and mix evenly After that, it is added to the smelting furnace, the electrode is...

Embodiment 3

[0039] In this embodiment, a method for controlling the generation of oxide films on vanadium-aluminum alloys uses electromagnetic coil heating to uniformly cool the high-temperature alloys to achieve the purpose of controlling the generation of oxide films on vanadium-aluminum alloys, which specifically includes the following steps:

[0040] (1) A heating device is designed on the outer layer of the furnace for smelting vanadium-aluminum alloy by electric aluminothermic method, and it is assembled on the platform of the furnace body. The furnace body is placed in it during smelting. The diameter of the coil support is 3200mm, the diameter of the induction coil is 2600mm, and the power is 27kw;

[0041] (2) Mix vanadium pentoxide, aluminum particles, and slagging agent according to the mass ratio: aluminum particles: flake vanadium pentoxide = 0.94:1, slagging agent: flake vanadium pentoxide = 0.086:1 and mix evenly After that, it is added to the smelting furnace, the electrode...

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Abstract

The invention discloses a method for controlling vananum to generate an oxidation film. The method specifically comprises the following steps of (1) designing a heating device on an outer layer of a furnace body for smelting vananum by adopting an electro-aluminothermic process, assembling on a furnace body platform, and putting the furnace body in the heating device during smelting; (2) uniformlymixing vanadium pentoxide, aluminum particles and slag forming constituents, then adding to the smelting furnace, igniting an electrode to start a thermit reaction, turning on an electromagnetic coilpower supply after smelting is completed, heating the furnace body, controlling the temperature at 450 to 600 DEG C for 2 to 3 h at the early stage, controlling the temperature at 300 to 450 DEG C for 1 to 2 h at the middle stage, and then naturally cooling; and (3) naturally cooling alloy to 30 to 40 DEG C, completing cooling, and finishing and breaking obtained alloy ingots so as to obtain qualified vananum. According to the method, the qualified rate of vananum components is larger than or equal to 99%, the alloy proportion of the oxidation film is reduced to be less than or equal to 20%,and the average qualified rate of products is larger than or equal to 80%.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a method for controlling the generation of oxide films on vanadium-aluminum alloys. Background technique [0002] As an alloy additive, vanadium-aluminum master alloy can be used as one of the important raw materials for the production of high-strength titanium alloys. According to the non-ferrous metal industry standard of the People's Republic of China (YS / T 579-2014), it is stipulated that the surface of vanadium-aluminum master alloy products should be clean, and no There are visually visible oxide film, nitride film and other metal and non-metal inclusions. [0003] At present, vanadium-aluminum alloys are mainly produced by the aluminothermic reaction between vanadium oxide and metal aluminum. The instantaneous heat of the reaction is large, but the duration is short. Therefore, after the smelting is stopped, the temperature in the furnace drops rapidly. Duri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C27/02C22C1/02C22B5/04C22B34/22
CPCC22B5/04C22B34/22C22C1/02C22C27/025
Inventor 李东明贾立根于继洋卢明亮徐峰卢永杰
Owner HEBEI IRON AND STEEL
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