Spherical vanadium alloy powder and preparation method and application thereof

A vanadium alloy and powder technology, which is applied in the field of spherical vanadium alloy powder and its preparation, can solve the problems of low sphericity and cleanliness of vanadium alloy powder, and achieve the effect of solving poor sphericity, high sphericity and few inclusions

Pending Publication Date: 2020-09-04
四川容克斯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The sphericity and cleanliness of the vanadium alloy powder produced by the above method are relatively low

Method used

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  • Spherical vanadium alloy powder and preparation method and application thereof
  • Spherical vanadium alloy powder and preparation method and application thereof
  • Spherical vanadium alloy powder and preparation method and application thereof

Examples

Experimental program
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preparation example Construction

[0032] In an exemplary embodiment of the present invention, the preparation method of the spherical vanadium alloy powder may include the following steps:

[0033] Vacuum-melted vanadium alloy rods or vanadium alloy rods produced by powder metallurgy (also known as vanadium alloy rods) are processed into raw material rods (also known as vanadium alloy rods, vanadium alloy raw material rods, etc.).

[0034] The raw material rod is put into an arc melting centrifugal atomization device (also called an arc melting rotary atomization device), a vacuum is drawn, and then an inert gas or a mixed inert gas is introduced into the device.

[0035] Under the protection of inert gas, the equipment arc is turned on to melt the front end of the vanadium alloy raw material rod into a liquid film, and the rotating speed of the vanadium alloy raw material rod is controlled. The liquid film melted at the front end of the raw material rod is broken into fine droplets under the action of centrifu...

example 1

[0062] V-6W-2.5Ti series vanadium alloy rods are used as raw materials. The main chemical element content of the vanadium alloy rods is shown in Table 1, and its relative density is greater than 98%. The rods are processed into vanadium alloy raw materials with a diameter of Ф50×550mm Rod, and remove surface oxides and impurities.

[0063] Put the vanadium alloy raw material rods from which surface oxides and impurities have been removed into an arc centrifugal atomization device (that is, an arc melting rotary atomization device), and vacuumize to a degree of 6×10 -3 Pa, and then pass a mixed inert gas into the device to ensure that the oxygen content in the atomization chamber is ≤5ppm.

[0064] Under the protection of inert gas, turn on the arc melting centrifugal atomization device, control the power by controlling the working current of the arc melting, and then control the melting speed of the vanadium alloy rod. The working current output is 2400A, the arc length is 60m...

example 2

[0073] V-5Cr-5Ti series vanadium alloy rods are used as raw materials, the contents of main chemical elements are shown in Table 3, and the relative density is greater than 99%. Process the bar into a vanadium alloy raw material bar with a diameter of Ф80×350mm, and remove surface oxides and impurities.

[0074] Put the vanadium alloy raw material rods from which surface oxides and impurities have been removed into the arc centrifugal atomization device, and vacuumize to 6×10 -3 Pa, and then pass a mixed inert gas into the device to ensure that the oxygen content in the atomization chamber is 3ppm.

[0075] Under the protection of inert gas, the arc melting centrifugal atomization device is turned on, and the melting speed of the vanadium alloy rod is controlled by controlling the working current of the arc melting. The front end of the alloy raw material rod is melted into a liquid film by an electric arc, and the liquid film is broken into fine vanadium alloy droplets by ro...

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Abstract

The invention provides a spherical vanadium alloy powder and a preparation method and application thereof. The preparation method comprises the steps that a vanadium alloy bar is arranged in a vacuumenvironment; inert gas is introduced into the vacuum environment for air replacement, and the oxygen content in the vacuum environment after replacement is below 5 ppm; an electric arc is utilized forenabling a liquid film out of the end face of the vanadium alloy bar; the vanadium alloy bar is rotated, and the liquid film is smashed into micro liquid drops under the centrifugal force effect; andcooling is carried out to obtain the spherical vanadium alloy powder. The spherical vanadium alloy powder can comprise powder prepared through the preparation method of the spherical vanadium alloy powder. The application can include application to the field of laser or electronic beam additional materials, and / or application to the field of laser or electronic beam cladding, such as applicationto electronic beam 3D printing. The spherical vanadium alloy powder has the beneficial effects that the preparation efficiency is high, the cost is low, the safety is high, and the problem that the sphere degree of the powder in a traditional production method can be effectively solved.

Description

technical field [0001] The invention relates to the field of preparation of vanadium alloy powder, in particular to a spherical vanadium alloy powder and its preparation method and application. Background technique [0002] Vanadium alloy is internationally recognized as an ideal candidate material for a key structural component of a fusion reactor. The most notable advantages are low activation characteristics and excellent high-temperature strength properties under neutron irradiation conditions. In addition, vanadium and vanadium alloys also have good resistance to radiation mutagenic expansion and damage, good dimensional stability, good thermal conductivity, low thermal expansion coefficient and elastic modulus, low biohazard safety and environmental protection characteristics, good Excellent creep resistance, good processability and good corrosion resistance to liquid lithium. Especially vanadium alloys: V-Cr-Ti series and V-W-Ti series are one of the most important c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/14B22F1/00B22F3/105C23C24/10B33Y70/00
CPCB22F9/14C23C24/103B33Y70/00B22F1/065Y02P10/25
Inventor 何安西
Owner 四川容克斯科技有限公司
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