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Preparation method of ferronickel-based alloy spherical powder for 3D printing

A spherical powder, 3D printing technology, used in metal processing equipment, transportation and packaging, additive processing, etc., can solve the problems of wide composition range, inapplicability, no research on nickel-iron-based alloy spherical powder, etc., to improve high temperature tensile strength. elongation and durability, increased bulk density, and improved batch stability

Active Publication Date: 2020-08-25
SINO EURO MATERIALS TECH OF XIAN CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since GH3536 alloy is a nickel-based superalloy with high iron content developed for traditional deformation processing technology, and its composition range is wide, some composition ranges are not suitable for 3D printing technologies such as laser selective melting.
Therefore, to find out the relationship between the alloy element content and the mechanical properties of the alloy after laser forming, on this basis, aiming at the process characteristics of laser selective melting, improving the alloy composition of GH3536 will have important practical significance for actual production. There is no nickel-iron-based alloy that can be applied to 3D printing technology, and there is no research on nickel-iron-based alloy spherical powder

Method used

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  • Preparation method of ferronickel-based alloy spherical powder for 3D printing

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specific Embodiment approach

[0023] It should be noted that the structures, proportions, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for the understanding and reading of those familiar with this technology, and are not used to limit the conditions for the implementation of the present invention , any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope covered by the technical content disclosed in the present invention without affecting the effect and purpose of the present invention. .

[0024] At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit this specification. The practicable scope of the invention and the change or adjustment of its relative relationship shall also be regarded as the practicable scope of the present invention without...

Embodiment 1

[0026] The invention discloses a method for preparing nickel-iron-based alloy spherical powder for 3D printing, which comprises the following steps:

[0027] Step 1) According to the mass fraction: 44.77-51.5% Ni, 18-20% Fe, 21.0-22.5% Cr, 1.0-2.0% Co, 8.0-9.5% Mo, 0.5-1.0% W, 0-0.02% C, 0-0.01% Mn, 0-0.2% Si chemical composition ratio for batching;

[0028] Step 2) Prepare the ingredients in step 1) into an alloy ingot by vacuum induction melting horizontal continuous casting process, remove the shrinkage cavity defect at the head of the alloy ingot, and then machine it into an electrode rod;

[0029] Step 3) Place the electrode rod of step 2) in the plasma rotary electrode powder making machine, vacuumize and fill high-purity argon-helium mixed gas, adjust the power of the plasma gun to 60-70kW, and heat the end surface of the electrode rod with a plasma arc to make The end surface of the electrode rod is melted, and the electrode rod is rotated at a high speed, and the mol...

Embodiment 2

[0032] The invention discloses a method for preparing nickel-iron-based alloy spherical powder for 3D printing, which comprises the following steps:

[0033] Step 1) According to the mass fraction: 44.77-51.5% Ni, 18-20% Fe, 21.0-22.5% Cr, 1.0-2.0% Co, 8.0-9.5% Mo, 0.5-1.0% W, 0-0.02% C, 0-0.01% Mn, 0-0.2% Si chemical composition ratio for batching;

[0034] Step 2) Prepare the ingredients in step 1) into an alloy ingot by vacuum induction melting horizontal continuous casting process, remove the shrinkage cavity defect at the head of the alloy ingot, and then machine it into an electrode rod;

[0035] Step 3) Place the electrode rod of step 2) in the plasma rotary electrode powder making machine, vacuumize and fill high-purity argon-helium mixed gas, adjust the power of the plasma gun to 60-70kW, and heat the end surface of the electrode rod with a plasma arc to make The end surface of the electrode rod is melted, and the electrode rod is rotated at a high speed, and the mol...

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Abstract

The invention discloses a preparation method of ferronickel-based alloy spherical powder for 3D printing. The preparation method comprises the following steps that 1) burdening is conducted by using the following chemical composition proportion of, in percentage by mass, 44.77%-51.5% of Ni, 18%-20% of Fe, 21.0%-22.5% of Cr, 1.0%-2.0% of Co, 8.0%-9.5% of Mo, 0.5%-1.0% of W, 0%-0.02% of C, 0%-0.01%of Mn and 0%-0.2% of Si; 2) the ingredients in the step 1) are prepared into an alloy ingot by adopting a vacuum induction melting horizontal continuous casting process, a shrinkage cavity defect at the head of the alloy ingot is removed, and then the alloy ingot is machined into an electrode bar; 3) the electrode bar in the step 2) is placed in a plasma rotating electrode powder making machine toform metal spherical powder; and 4) the prepared metal spherical powder is screened by adopting an ultrasonic vibrating screen under the protection of high-purity argon to obtain the ferronickel-based alloy spherical powder for the 3D printing.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal powder preparation, and in particular relates to a method for preparing nickel-iron-based alloy spherical powder for 3D printing. Background technique [0002] At this stage, metal 3D printing technology is developing rapidly and has been widely used in the aerospace field. The largest application case of 3D printing in the aerospace field is GE's LEAP engine fuel nozzle. GE has re-optimized the design and manufacture of the fuel nozzle components by using selective laser melting (Selective LaserMelting, referred to as SLM) technology. The number of parts is reduced from 20 Reduced to 1, 25% lighter and 5 times longer lifespan. On this basis, GE has begun to redesign and manufacture the entire aero-engine with 3D printing, and has achieved remarkable results. In China, structural optimization based on additive manufacturing has also been carried out on components such as fuel nozzles. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/10B22F1/00C22C19/05C22C30/00B33Y70/00
CPCB22F9/10C22C19/055C22C30/00B33Y70/00B22F1/065Y02P10/25
Inventor 韩志宇梁书锦赖运金王庆相黄椿森郑作赟唐洪奎瞿宗宏吴纪王琦
Owner SINO EURO MATERIALS TECH OF XIAN CO LTD
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