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Powder-mesh composite material and processing method thereof

A composite material and wire mesh technology, applied in separation methods, chemical instruments and methods, filtration separation, etc., can solve problems such as insufficient filtration accuracy and poor regeneration performance, and achieve improved filtration accuracy, high flow rate, and flexibility Good results

Inactive Publication Date: 2019-09-17
WESTERN BAODE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a powder mesh composite material to solve the problems of insufficient filtration accuracy and poor regeneration performance of conventional composite mesh filter materials in the prior art

Method used

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  • Powder-mesh composite material and processing method thereof
  • Powder-mesh composite material and processing method thereof
  • Powder-mesh composite material and processing method thereof

Examples

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Effect test

preparation example Construction

[0026] The method for preparing a powder-net composite material of the present invention is specifically implemented according to the following steps:

[0027] Step 1: Lay out the metal wire mesh 1 into a flat shape;

[0028] Step 2: Lay a layer of metal or metal compound powder on the metal wire mesh obtained in step 1, and add 2-10% binder to the metal or metal compound powder to obtain a prefabricated material;

[0029] Step 3: The prefabricated material obtained in step 2 is rolled, vacuum sintered and insulated to obtain a powder mesh composite material for filtration.

[0030] Among them, the binder is one of resin, PVB, and PEG, the sintering temperature is 900-1150°C, and the heat preservation is 30-60 minutes.

Embodiment 1

[0032] A powder mesh composite material, including stainless steel wire mesh and porous stainless steel metal film attached to the stainless steel wire mesh. The stainless steel wire mesh has a single-layer structure of 120X400. The porous stainless steel metal film has a thickness of 0.2mm, a hole diameter of 2μm, and an air permeability of 100m. 3 / (㎡·kPa·h).

[0033] In this embodiment, a method for preparing a powder-net composite material, the specific implementation process is as follows:

[0034] Step 1: Lay out the 120X400 stainless steel single-layer wire mesh into a flat shape;

[0035] Step 2: On the stainless steel wire mesh obtained in step 1, a layer of porous stainless steel metal powder with a thickness of 0.2mm and an average particle size of 5-10μm is laid, and 5% by mass phenolic resin is added for bonding. Knot, and finally get the prefabricated material;

[0036] Step 3: After rolling the preformed material obtained in step 2 through a rolling mill, it is put into...

Embodiment 2

[0038] A powder mesh composite material, comprising iron-chromium-aluminum alloy wire mesh and porous iron-aluminum alloy film attached to the iron-chromium-aluminum alloy wire mesh. The chromium-aluminum alloy wire mesh has a single-layer structure of 200 meshes and the thickness of the porous iron-aluminum alloy film is 0.3 mm, average pore diameter is 0.5μm, air permeability is 50m 3 / (㎡·kPa·h).

[0039] In this embodiment, a method for preparing a powder-net composite material, the specific implementation process is as follows:

[0040] Step 1: Lay out a single layer of 200 mesh iron-chromium-aluminum alloy wire mesh;

[0041] Step 2: Lay a layer of porous iron-aluminum alloy powder with a thickness of 0.3mm and an average particle size of 5-10μm on the formed iron-chromium-aluminum alloy wire mesh obtained in step 1, and add 3% by mass to it PVC is used for bonding, and finally the prefabricated material is obtained;

[0042] Step 3: After rolling the prefabricated material obta...

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Abstract

The invention discloses a powder-mesh composite material, which is prepared from a wire mesh and porous metal or a metal oxide film which is attached to the wire mesh, wherein the wire mesh is formed by laying 1-2 layers in a stacking way and then rolling, and has a thickness of 0.1-0.15mm; the thickness of the porous metal or the metal oxide film is 0.1-0.5mm, the aperture of the porous metal or the metal oxide film is 0.1-3mu m, and the air permeability of the porous metal or the metal oxide film is 20-120m<3> / (m<2>.kPa.h). The invention also discloses a preparation method of the powder-mesh composite material; the method concretely comprises the following steps: 1, forming the wire mesh by flatly laying and rolling; 2, laying a layer of metal or metal compound powder on the obtained wire mesh, and adding 2-10% by mass of a binder into the metal or metal compound powder to obtain a prefabricated material; 3, rolling the prefabricated material obtained in the step 2, and then carrying out vacuum sintering and heat preservation to obtain the powder-mesh composite material used for filtering. The powder-mesh composite material improves the filter precision and regeneration performance of a filter material, maintains a high flux, and hardly causes a piezoresistive loss.

Description

Technical field [0001] The invention belongs to the technical field of composite materials and relates to a powder-net composite material. The invention also relates to a method for preparing the above-mentioned powder-net composite material. Background technique [0002] The bag filter has the advantages of high filtration accuracy, large processing capacity, low cost, convenient use and maintenance, complete specifications, diverse materials, and wide application range. It is mainly used in: chemical, food, sanitation, pharmaceutical and other industries. High temperature is prone to occur in bag filter. Bag paste and breakage phenomenon. The traditional composite mesh is a kind of sintered mesh product with a very wide range of uses. The composite mesh is a stainless steel wire mesh product that is made by stacking stainless steel wire meshes in a fixed structure through rolling, sintering and other processes. At present, the highest filtration accuracy of conventional compos...

Claims

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Application Information

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IPC IPC(8): B01D39/12B01D39/10
CPCB01D39/10B01D39/12B01D2239/065B01D2239/1291
Inventor 南海娟王耀辉尤超李刚吕波戴晨
Owner WESTERN BAODE TECH CO LTD
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