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Preparation method of Incone1625 nickel base alloy powder for selective laser melting technology

A technology of laser selective melting and nickel-based alloys, which is applied in the field of additive manufacturing, can solve the problems of macroscopic component segregation and low material utilization rate, and achieve the effects of avoiding adverse effects, reducing production costs, and fast cooling speed

Active Publication Date: 2015-09-23
SHANGHAI RES INST OF MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inconel625 nickel-based alloy parts manufactured by traditional processes such as casting and forging have the shortcomings of macroscopic component segregation and low material utilization, but the use of SLM technology can effectively overcome the above shortcomings

Method used

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  • Preparation method of Incone1625 nickel base alloy powder for selective laser melting technology
  • Preparation method of Incone1625 nickel base alloy powder for selective laser melting technology
  • Preparation method of Incone1625 nickel base alloy powder for selective laser melting technology

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The preparation method of the Inconel625 nickel base alloy powder that is used for laser selective melting technique comprises the following steps:

[0036] (1) Smelting: Put the Inconel625 nickel-based alloy raw material into a vacuum induction furnace for smelting, and the smelting temperature is controlled at 1450°C. After smelting, an Inconel625 nickel-based alloy bar is obtained. The alloy composition ratio is: Ni: 62%, Cr: 22%, Mo: 9%, Nb: 4.0%, Fe: 2.5%, Al: ≤0.4%, Ti: ≤0.4%, Mn: ≤0.5%, Si: ≤0.5%, C: ≤0.1%, P: ≤0.015% , S: ≤0.015%;

[0037] (2) Processing: Inconel625 nickel-based alloy bar according to figure 1 The structure is processed into a cylindrical rod with a cone angle of 80°;

[0038] (3) Atomization: Vacuum electrode induction melting is performed on the processed Inconel625 nickel-based alloy rod, and the descending speed of the rod is controlled at 20mm / min. Under the impact of the air flow, the atomization forms fine droplets. The atomization gas...

Embodiment 2

[0042] The preparation method of the Inconel625 nickel base alloy powder that is used for laser selective melting technique comprises the following steps:

[0043] (1) Smelting: Put the Inconel625 nickel-based alloy raw material into a vacuum induction furnace for smelting, and the smelting temperature is controlled at 1500 ° C. After smelting, an Inconel625 nickel-based alloy bar is obtained. The alloy composition ratio is: Ni: 62%, Cr: 22 %, Mo: 9%, Nb: 3.6%, Fe: 3.5%, Al: ≤0.4%, Ti: ≤0.4%, Mn: ≤0.5%, Si: ≤0.5%, C: ≤0.1%, P: ≤ 0.015%, S: ≤0.015%;

[0044] (2) Processing: Inconel625 nickel-based alloy rods are processed according to the attached figure 1 Processed into a cylindrical rod with a cone angle of 75°;

[0045] (3) Atomization: Vacuum electrode induction melting is performed on the processed Inconel625 nickel-based alloy rod, and the descending speed of the rod is controlled at 30mm / min. Under the airflow, atomize to form fine droplets. The atomization gas is hig...

Embodiment 3

[0049] The preparation method of the Inconel625 nickel base alloy powder that is used for laser selective melting technique comprises the following steps:

[0050] (1) Smelting: Put the Inconel625 nickel-based alloy raw material into a vacuum induction furnace for smelting, the smelting temperature is controlled at 1550°C, and the Inconel625 nickel-based alloy bar is obtained by smelting. The alloy composition ratio is: Ni: 62%, Cr: 22% , Mo: 9%, Nb: 3.2%, Fe: 4.5%, Al: ≤0.4%, Ti: ≤0.4%, Mn: ≤0.5%, Si: ≤0.5%, C: ≤0.1%, P: ≤0.015 %, S: ≤0.015%;

[0051] (2) Processing: Inconel625 nickel-based alloy rods are processed according to the attached figure 1 Processed into a cylindrical rod with a cone angle of 90°;

[0052] (3) Atomization: Vacuum electrode induction melting is carried out on the processed Inconel625 nickel-based alloy rod, and the descending speed of the rod is controlled at 40mm / min. Under the airflow, atomize to form fine droplets. The atomization gas is high-p...

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Abstract

The invention relates to a preparation method of Incone1625 nickel base alloy powder for a selective laser melting technology. The method combines a vacuum electrode induction smelting technology with an ultrasonic tight coupling atomization technology, applies methods of ultrasonic vibration separation and airflow classification, and matches powder with different particle sizes to prepare the Incone1625 nickel base alloy powder suitable for the selective laser melting technology. Compared with the prior art, the Incone1625 nickel base alloy powder, prepared by the method, has such performance characteristics as high sphericility, uniform particle size distribution, low oxygen content and low impurity content, satisfies the performance requirements of the selective laser melting technology on powder materials, and promotes the development of a metal material increase manufacturing technology.

Description

technical field [0001] The invention relates to a method for preparing nickel-based alloy powder, in particular to a method for preparing Inconel625 nickel-based alloy powder used in laser selective melting technology, and belongs to the field of additive manufacturing. Background technique [0002] Additive manufacturing is a manufacturing technology that uses lasers or electron beams, based on three-dimensional modeling, to add and accumulate materials layer by layer under computer control to directly form parts quickly and accurately, also known as "3D printing". Additive manufacturing technology does not require traditional tools, fixtures, and multiple processing procedures. Using 3D design data, it can quickly and accurately manufacture parts of any complex shape on one device. Compared with the traditional method of material removal (or deformation) Processing and common special processing technology, additive manufacturing technology has a very high material utilizat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08C22C19/05B22F1/00B33Y70/00
Inventor 吴文恒杨启云仲守亮曹冲
Owner SHANGHAI RES INST OF MATERIALS CO LTD
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