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Method and device for preparing spherical titanium alloy fine powder based on special centrifugal atomizing disc

A centrifugal atomization disc and centrifugal atomization technology are applied in the field of spherical titanium alloy fine powder and devices based on special centrifugal atomization discs. The effect of increasing the strength and improving the toughness

Inactive Publication Date: 2018-12-11
烟台奥泰新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the problem of high melting point and contaminated molten soup, considering the pollution of a small amount of yttrium element can refine titanium alloy grains, increase strength, improve toughness, and ceramics are required for high temperature resistance of 1800 ° C, so yttrium oxide ceramics are selected as the material of the centrifugal atomization disc. However, yttrium oxide cannot be made into the shape of a centrifugal atomizing disc, so tungsten is used as the substrate and yttrium oxide is used as the spray coating.

Method used

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  • Method and device for preparing spherical titanium alloy fine powder based on special centrifugal atomizing disc
  • Method and device for preparing spherical titanium alloy fine powder based on special centrifugal atomizing disc
  • Method and device for preparing spherical titanium alloy fine powder based on special centrifugal atomizing disc

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Experimental program
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Effect test

Embodiment 1

[0027] Take the titanium alloy rod and machine it into a raw material rod with a length of 1000mm and a diameter of Ф100mm. Feed the raw material rods into the melting chamber with a feeding device. When the raw material rod enters the melting chamber, turn on the vacuum device until the internal vacuum drops to 10 -2 Below MPa, stop vacuuming at this time, open the inert gas manifold, use argon as the inert gas to fill the equipment, and keep the gas pressure at 1 MPa. Turn on all toroidal induction coils, refrigeration equipment, and centrifugal atomizing disk power supplies. The material of the centrifugal atomization disc is titanium boride. The shape of the centrifugal atomization disc is a dish-shaped smooth disc with a diameter of Ф160mm, the vertical height difference between the edge and the center of the disc is 5mm, and the rotation speed is 12000rpm. The temperature in the centrifugal atomization chamber is below 80°C, and the temperature in the collection device ...

Embodiment 2

[0029] Take the titanium alloy rod and process it into a raw material rod with a length of 300mm and a diameter of Ф30mm on a lathe. Feed the raw material rods into the melting chamber with a feeding device. When the raw material rod enters the melting chamber, turn on the vacuum device until the internal vacuum drops to 10 -2 Below MPa, stop vacuuming at this time, open the inert gas busbar, fill the equipment with argon as the inert gas, and keep the gas pressure at 1 MPa. Turn on the power of the toroidal induction coil, refrigeration equipment and centrifugal atomization disk. The material of the centrifugal atomization disk is titanium boride, the shape is bowl-shaped, the diameter is Ф20mm, the vertical height difference between the edge of the disk and the center is 8mm, and the rotation speed is 160000rpm. The temperature in the centrifugal atomization chamber is below 80°C, and the temperature in the collection device is maintained at about 40°C. After the equipment ...

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Abstract

The invention develops a titanium boride centrifugal atomizing disc which is resistant to high-speed abrasion of a liquid titanium alloy at the high temperature of 1800 DEG C, benefits from micropollution and is resistant to thermal shock and sufficient in high-temperature strength and wetness, and provides a device and method for preparing spherical titanium alloy fine powder through a titanium boride high-speed atomizing disc based on the atomizing disc. The device comprises a feeding device, an annular induction coil for melting, a high-speed motor, the liquid titanium high-temperature, high-speed and high-strength centrifugal atomizing disc, a centrifugal atomizing chamber, a cooling device, a vacuumizing device, an inert gas busbar and a powder collecting device. The device and methodfor preparing the spherical titanium alloy fine powder through the titanium boride high-speed atomizing disc have the advantages that the titanium boride centrifugal atomizing disc can resist erosionof the high-speed melted liquid titanium alloy, has excellent high-temperature resistance and stability and less pollutes the prepared titanium alloy powder, pollution of the trace boron element in the atomizing disc is beneficial to the prepared titanium alloy powder, titanium alloy grains can be refined, strength is improved, and toughness is improved.

Description

Technical field [0001] The invention belongs to the technical field of metal and alloy powder preparation. Specifically, it has developed a titanium boride centrifugal atomization that is resistant to high-speed wear and micro-pollution of high-temperature liquid titanium alloys at 1800°C and is beneficial in heat shock resistance, high-temperature strength and wetting. Disk, based on this atomization disk, a device and method for making spherical titanium alloy fine powder with titanium boride high-speed atomization disk (Titanium Boride High Speed ​​Disk Centrifugal Atomization of Titanium Powder, referred to as TBHSD-CATP method) is provided. Background technique [0002] Titanium and titanium alloys have been gradually known since the 1950s. Because of their excellent strength, corrosion resistance, and heat resistance, many countries in the world have realized the importance of titanium alloy materials. Now it is widely used in various fields, such as aerospace, chemical, me...

Claims

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Application Information

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IPC IPC(8): B22F9/10C22C1/04C22C14/00
CPCB22F9/10C22C1/0458C22C14/00
Inventor 贺楠吴长龙
Owner 烟台奥泰新材料有限公司
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