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Nickel-vanadium intermediate alloy and preparation method thereof

An intermediate alloy, nickel-vanadium technology, applied in the field of metallurgy, can solve the problems of complex production process and high cost of high-purity vanadium, and achieve the effects of reducing oxygen content, controlling aluminum content, and reducing costs

Active Publication Date: 2019-10-22
METALINK SPECIAL ALLOYS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of vanadium to nickel-based superalloys can use metal vanadium, aluminum-vanadium alloys or nickel-vanadium alloys. The production process of high-purity vanadium is complicated and the cost is high.

Method used

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  • Nickel-vanadium intermediate alloy and preparation method thereof
  • Nickel-vanadium intermediate alloy and preparation method thereof
  • Nickel-vanadium intermediate alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method of a nickel-vanadium master alloy material, comprising the following steps:

[0018] 1) Selection and analysis of raw materials: The raw materials are vanadium pentoxide, nickel oxide, aluminum powder, aluminum-magnesium alloy and the purity control of the furnace powder is as follows:

[0019] Table 1

[0020]

[0021] 2) Raw material pretreatment: put the vanadium pentoxide into a drying furnace, and dry it at 300° C. for 24 hours. Put the nickelous oxide into the sintering furnace and sinter at 800°C for 8 hours.

[0022] 3) Mixing: Weigh the baked raw materials according to the formula, put them into a V-shaped mixer and mix them evenly. When mixing the materials, the temperature of the materials must be controlled below 150°C. It is necessary to ensure that the materials are fully mixed. The time is 15 minutes.

[0023] 4) Bake and dry the alumina crucible.

[0024] 5) Reaction: Put the uniformly mixed raw materials into the alumina furn...

Embodiment 2

[0041] The preparation method of the present embodiment is basically the same as that of Example 1, the difference is as follows:

[0042] 1. Process conditions

[0043] Table 4

[0044] raw material baking temperature 300℃(±20℃) raw material baking time 18 hours NiO sintering temperature 900℃ Sintering time 8 hours Mixing time 15 minutes Charge temperature 70℃ Reaction time 64s cooling time 40 hours Alloy ingot weight 143㎏ Broken particle size 10～30㎜

[0045] 2. Formula

[0046] table 5

[0047]

[0048] 3. Reaction situation: the reaction process is relatively fast, the recovery rate of vanadium: 94.16%, and the recovery rate of nickel: 97.33%.

[0049] 4. Alloy analysis results

[0050] Table 6

[0051]

Embodiment 3

[0053] The preparation method of the present embodiment is basically the same as that of Example 1, the difference is as follows:

[0054] 1. Process conditions

[0055] Table 7

[0056] raw material baking temperature 180℃(±20℃) raw material baking time 12 hours NiO sintering temperature 700℃ Sintering time 8 hours Mixing time 15 minutes Charge temperature 70℃ Reaction time 61s cooling time 40 hours Alloy ingot weight 142㎏ Broken particle size 10～30㎜

[0057] 2. Formula

[0058] Table 8

[0059]

[0060] 3. Reaction situation: intense reaction, vanadium recovery rate: 94.16%, nickel recovery rate: 97.13%.

[0061] 4. Alloy analysis results

[0062] Table 9

[0063]

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Abstract

The invention relates to an alloy and a preparation method thereof, in particular to a nickel-vanadium intermediate alloy and a preparation method thereof and belongs to the metallurgical technical field. The alloy is prepared from the following elements in percent by mass: 60-70% of vanadium, 30-40% of nickel, smaller than or equal to 1.5% of aluminum and the balance total micro elements and impurities, the total amount of which is smaller than 1%. The invention also discloses the preparation method of the nickel-vanadium intermediate alloy. According to the nickel-vanadium intermediate alloy, the temperature of smelting a nickel-containing alloy can be reduced greatly. Strict raw material control is adopted in preparing the nickel-vanadium intermediate alloy, so that the product is highin purity, low impurity content, good in controllability, high in production efficiency, low in nitrogen and oxygen content and purifier.

Description

technical field [0001] The invention relates to an alloy and a preparation method thereof, in particular to a nickel-vanadium master alloy and a preparation method thereof, belonging to the technical field of metallurgy. Background technique [0002] The melting point of metal vanadium is 1890°C, while the melting point of the nickel-vanadium master alloy mentioned in the present invention is about 1450°C, which greatly reduces the melting point of vanadium and is a necessary additive for smelting nickel-based vanadium-containing superalloys. Vanadium addition plays a role of solid solution strengthening in superalloys and improves the physical properties of superalloys. The vanadium element added to the nickel-based superalloy can be metal vanadium, aluminum-vanadium alloy or nickel-vanadium alloy. The production process of high-purity vanadium is complicated and the cost is high. Contents of the invention [0003] The object of the present invention is to propose a nick...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C27/02C22C1/03
CPCC22C1/03C22C27/025
Inventor 马步洋王晓蓉陈道华贾明
Owner METALINK SPECIAL ALLOYS CORP