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High-temperature nickel-based alloy multistage filter and manufacturing method thereof

A nickel-based alloy, stage filter technology, applied in gravity filters, chemical instruments and methods, fixed filter element filters, etc., can solve the problem of insufficient corrosion resistance and high temperature resistance, large flow resistance and pressure drop, and limited shape changes. and other problems, to achieve the effect of strong high temperature resistance, reduced flow resistance, and low fluid resistance

Inactive Publication Date: 2018-09-25
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention mainly solves the problems of limited shape change of traditional metal multi-stage filter, large flow resistance and pressure drop under limited volume, insufficient corrosion resistance and high temperature resistance, and long manufacturing cycle. multi-stage filter

Method used

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  • High-temperature nickel-based alloy multistage filter and manufacturing method thereof
  • High-temperature nickel-based alloy multistage filter and manufacturing method thereof
  • High-temperature nickel-based alloy multistage filter and manufacturing method thereof

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Embodiment 1

[0046] Such as Figure 1-2shown. The invention discloses a high-temperature nickel-based alloy multistage filter, which comprises a multistage porous filter medium body and a sealing interface section 1; the multistage porous filter medium body is connected to a pipeline through the sealing interface section 1; the multistage porous filter The medium body is composed of two layers of porous filter medium inside and outside, and they both include the middle section 2 of the porous filter medium body and the head 3 of the porous filter medium body;

[0047] In these two layers of porous filter medium bodies, the outer layer is the first-stage porous filter medium layer, and the inner layer is the second-stage porous filter medium layer; The shape of the filter holes in the medium layer is different;

[0048] The sizes of the filter holes of the first-stage porous filter medium layer and the filter holes of the second-stage porous filter medium layer are gradually reduced from ...

Embodiment 2

[0072] This embodiment is the same as Embodiment 1 except for the following features.

[0073] 500-mesh high-temperature nickel-based alloy powder is selected as the material, and the processing parameters are: laser power 150W, laser spot 50μm, scanning speed 900mm / s, forming layer thickness 30μm, and laser scanning distance 0.08mm.

[0074] In this embodiment, the density between the two-stage porous filter medium layers is 99%, and the porosity is respectively 44.4% in the first stage and 39.1% in the second stage.

[0075] In this embodiment, each stage of porous filter structure in the two-stage porous filter medium layer is a square porous structure; the diameter of the circumscribed circle of the cross-section of the metal wire / metal pillar of the first-stage porous filter medium layer is 100 μm, and the diameter of the circumscribed circle of the second-stage porous filter medium layer is 100 μm. The dielectric layer is 60μm.

[0076] In this embodiment, both the maxi...

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Abstract

A high-temperature nickel-based alloy multistage filter and a manufacturing method thereof are disclosed. The multistage filter includes sealed connector segments and multi-stage porous filtration medium layers. The sealed connector segments are at an end of the filter and play roles of connection and sealing. A multi-stage porous filtration medium consists of two or more porous structures which have completely different densities, porosity, materials, minimum pore sizes, average pore diameters, porous structure types, and azimuth angles of the porous structures, and is produced by a metal additive manufacturing process. The multi-stage filter can be produced by a metal additive manufacturing process. Compared with traditional multi-stage filters, the multi-stage filter has excellent corrosion resistance and high-temperature resistance. Integrated manufacturing of a multi-stage porous filtration structure of a metal filter having a complex shape can be achieved; the overall structure of the filter is optimized so that a supporting structure and a filtration medium are formed in an integrated manner and fluid resistance and pressure drop are reduced; the structure of the multi-stagefilter facilitates cleaning and washing; and the filter development and manufacturing cycle is shortened, achieving rapid design and processing of customized filters.

Description

technical field [0001] The invention relates to a multi-stage filter manufactured by additive manufacturing and a preparation process thereof, in particular to a high-temperature nickel-based alloy multi-stage filter and a manufacturing method thereof. Background technique [0002] The filter is a device that blocks relatively large-sized impurities, realizes solid-liquid separation in the filter slurry, and protects fluid system components. The use of the filter not only ensures the subsequent smooth movement of the filtrate, but also protects the important components of the fluid system, and is an indispensable and important component of the fluid system. [0003] The filter medium of the filter is the part that acts as a filter. Commonly used are metals, ceramics, polymer materials, etc. Among them, metal materials are widely used because of their high mechanical strength, corrosion resistance and impact resistance. Metal filter media mainly include perforated metal plat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/12B01D29/31B01D29/56B33Y10/00B33Y80/00
CPCB01D29/31B01D29/56B01D39/12B33Y10/00B33Y80/00
Inventor 王迪叶光照林康杰杨永强
Owner SOUTH CHINA UNIV OF TECH
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