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A metallurgical method for improving the yield of nickel-based metal centrifugal atomization fine powder

A centrifugal atomization, base metal technology, applied in metal processing equipment, transportation and packaging, etc., can solve the problems of production cost, low yield of fine powder, affecting powder price, etc., and achieve narrow particle size and good sphericity. Effect

Active Publication Date: 2019-12-31
SINO EURO MATERIALS TECH OF XIAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Nickel-based metal alloy fine powder has very good performance especially on 3D printing aerospace alloy parts, so there is a great demand for fine powder, but when preparing powder, due to the limitation of powder making equipment and technology, the fine powder is collected The rate is relatively low, which seriously affects the price of the powder, resulting in a good production cost

Method used

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  • A metallurgical method for improving the yield of nickel-based metal centrifugal atomization fine powder
  • A metallurgical method for improving the yield of nickel-based metal centrifugal atomization fine powder

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Embodiment 1

[0018] A metallurgical method for improving the yield of nickel-based metal centrifugal atomization fine powder, comprising the following steps:

[0019] Step 1, adding 0.3wt% C element when the nickel-based metal is smelted, and smelting it into a metal rod;

[0020] Step 2, finish machining the metal rod, and process it into a metal electrode rod with a diameter of 10mm and a length of 10mm;

[0021] Step 3, under the protection of argon gas, the plasma rotating electrode equipment is adopted, and the output power of the plasma gun is 50kW to smelt the electrode rod;

[0022] Step 4, sieving and packaging the powder under the protection of argon gas.

[0023] The particle size of the prepared nickel-based metal alloy powder is less than 53 μm, and the powder yield is 42%;

[0024] The oxygen increment of the prepared nickel-based metal alloy powder is 65ppm.

[0025] The prepared particle size is figure 1 It can be seen from the figure that with the addition of 0.32wt% C ...

Embodiment 2

[0027] A metallurgical method for improving the yield of nickel-based metal centrifugal atomization fine powder, comprising the following steps:

[0028] Step 1, adding 0.4wt% N element when the nickel-based metal is smelted, and smelting it into a metal rod;

[0029] Step 2, finishing the metal rod, processing it into a metal electrode rod with a diameter of 55mm and a length of 495mm;

[0030] Step 3, under the protection of argon gas, the plasma rotating electrode equipment is adopted, and the output power of the plasma gun is 220kW to smelt the electrode rod;

[0031] Step 4, sieving and packaging the powder under the protection of argon gas.

[0032] The particle size of the prepared nickel-based metal alloy powder is <53 μm, and the powder yield is 53%;

[0033] The prepared nickel-based metal alloy powder has an oxygen increment of 70ppm.

Embodiment 3

[0035] A metallurgical method for improving the yield of nickel-based metal centrifugal atomization fine powder, comprising the following steps:

[0036] Step 1, adding 0.35wt% H element when the nickel-based metal is smelted, and smelting it into a metal rod;

[0037] Step 2, finishing the metal bar, processing it into a metal electrode rod with a diameter of 100mm and a length of 1000mm;

[0038] Step 3, under the protection of argon gas, the plasma rotating electrode equipment is adopted, and the output power of the plasma gun is 400kW to smelt the electrode rod;

[0039] Step 4, sieving and packaging the powder under the protection of argon gas.

[0040] The particle size of the prepared nickel-based metal alloy powder is less than 53 μm, and the powder yield is 47%;

[0041] The prepared nickel-based metal alloy powder has an oxygen increment of 76ppm.

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Abstract

A metallurgical method for increasing the yield of nickel-based metal centrifugally atomized fine powder, comprising the following steps: step 1, adding a small amount of non-metallic elements to the nickel-based metal to smelt it into a metal bar; step 2, refining the metal bar Processing into electrode rods; step 3, using plasma rotating electrode equipment, the output power of the plasma gun is 50~400kW to smelt electrode rods; step 4, screening and packaging the powder under the protection of inert gas; the yield of the prepared powder fine powder High, low oxygen content.

Description

technical field [0001] The invention belongs to the technical field of powder metallurgy preparation of nickel-based metals, and in particular relates to a metallurgical method for improving centrifugally atomized fine powder of nickel-based metals. Background technique [0002] Nickel-based metal alloys are generally metal alloys with a Ni content of more than 30%. Due to their super high-temperature mechanical strength and corrosion resistance, they are called superalloys and are generally used in high-temperature environments above 540°C. Because it can maintain high strength at high temperature, and has excellent creep resistance, fatigue resistance, oxidation resistance, and good plasticity and weldability, it is widely used in high-temperature and high-pressure parts of aerospace engine gas chambers, nuclear energy, petroleum, and marine industries. in corrosion-resistant pipelines. [0003] Nickel-based metal alloy fine powder has very good performance especially on ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/10C22C19/03B22F1/00B22F9/14
CPCC22C1/1036C22C19/03B22F9/14B22F1/065C22C1/1047
Inventor 康路王松李鑫瞿宗宏王庆相梁书锦张平祥
Owner SINO EURO MATERIALS TECH OF XIAN CO LTD