A method and post-treatment process for preparing high-temperature nickel-based alloy porous materials by 3dp method

A technology of porous materials and nickel-based alloys, applied in the field of high-temperature nickel-based alloy porous materials prepared by 3DP method, to achieve the effects of reducing oxidation or decarburization, improving filtration, and increasing porosity

Active Publication Date: 2020-07-31
NANTONG INST OF TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, this patent is not aimed at porous metal materials. Porous metal materials not only need to improve the mechanical properties through cryogenic treatment, but also need to improve the structural characteristics of porous materials through other post-treatments.

Method used

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Embodiment Construction

[0042] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0043] The present invention provides the following technical solution: a method for preparing a high-temperature nickel-based alloy porous material by a 3DP method and a post-treatment process, comprising the following steps:

[0044] A. Mixed powder: fully mix a certain proportion of Ni, Cr, Fe and other metal powders with polyvinyl alcohol powder;

[0045] B. Macroscopic direct pore creation: According to the shape characteristics, porosity, pore distribution law and pore shape and size design requirements of porous materials, de...

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Abstract

The invention discloses a method and a post-treatment process for preparing high-temperature nickel-based alloy porous materials by a 3DP method. Mixing; B. Macroscopic direct pore creation: According to the shape characteristics, porosity, pore distribution law and pore shape and size design requirements of porous materials, a three-dimensional model of porous structure is designed through three-dimensional design software; C. 3DP method to prepare porous materials: 3DP The equipment receives the printing program, sets the printing parameters and starts printing; D. Removal of residual powder: first take out the rough powder from the powder pile, and then remove the residual powder on the rough base; E. Debonding and atmosphere sintering treatment: send the rough base to Go to the muffle furnace for debonding and atmosphere sintering; F, electrochemical corrosion: perform electrochemical corrosion treatment on the sintered nickel-based porous material; G, cryogenic treatment: put the workpiece into a cryogenic device for cryogenic treatment; H, The preparation and post-treatment of the high-temperature nickel-based alloy porous material are completed.

Description

technical field [0001] The invention relates to the technical field of 3D printing and molding manufacturing, in particular to a method for preparing a high-temperature nickel-based alloy porous material by a 3DP method and a post-treatment process. Background technique [0002] Metal porous materials are widely used in filtration, separation, catalysis, and noise reduction because of their stable pore shape, high temperature and high pressure resistance, corrosion resistance, oxidation resistance, good permeability, excellent mechanical properties, machinability, and good biocompatibility. Functional materials such as shock absorption, adsorption and human implants are widely used in aerospace, petrochemical, metallurgy, medicine, construction and environmental protection and other fields. Inside the metal porous material, there are a large number of random or directional pores, and the diameter of these pores ranges from 2 μm to 3 mm. Metallic porous materials can make up...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B22F3/11B22F3/00B22F3/24C22F1/10B33Y10/00B22F10/60B22F10/62B22F10/64
Inventor 顾海孙健华李彬姜杰张捷黄天成杨建春吴国庆狄陈阳
Owner NANTONG INST OF TECH
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