Composite metal porous pipe and preparing method thereof

A composite metal and porous tube technology, which is applied in separation methods, chemical instruments and methods, filtration and separation, etc., can solve the problems of few researches and few reports on metal porous membranes, and achieve simple operation steps, simple equipment, and air permeability coefficient high effect

Active Publication Date: 2016-10-26
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are not many domestic studies on metal po...

Method used

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  • Composite metal porous pipe and preparing method thereof
  • Composite metal porous pipe and preparing method thereof
  • Composite metal porous pipe and preparing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] like figure 1 As shown, this embodiment includes a wire mesh pipe 1 and a powder porous functional layer 2 attached to the wire mesh pipe 1; The wall thickness of 1 is 3.8mm, the aperture of wire mesh tube 1 is 200μm, the outer diameter of wire mesh tube 1 is 45mm, and the tube length is 1200mm; the thickness of the powder porous functional layer 2 is 15μm, and the aperture is 0.5μm, which is breathable rate 20m 3 / (m 2 ·KPa·h); The wire mesh is a stainless steel wire mesh.

[0030] The preparation method of the composite metal porous pipe of the present embodiment comprises the following steps:

[0031] Step 1. Lay seven stainless steel wire meshes with a pore diameter of 200 μm to obtain a wire mesh assembly, then roll the wire mesh assembly into a tubular shape, and then roll the rolled wire mesh assembly into a joint at the joint of the tubular wire mesh assembly Welding to obtain a wire mesh pipe; the rolling speed is 50m / h; the welding adopts argon arc welding...

Embodiment 2

[0039] like figure 1 As shown, this embodiment includes a wire mesh pipe 1 and a powder porous functional layer 2 attached to the wire mesh pipe 1; The wall thickness of 1 is 1.5mm, the aperture of wire mesh tube 1 is 20 μm, the outer diameter of wire mesh tube 1 is 120 mm, and the tube length is 600 mm; the thickness of the powder porous functional layer 2 is 200 μm, the aperture is 22 μm, and the gas permeability 50m 3 / (m 2 ·KPa·h); The wire mesh is a nickel mesh.

[0040] The preparation method of the composite metal porous pipe of the present embodiment comprises the following steps:

[0041] Step 1. Lay three nickel screens in layers to obtain a wire mesh assembly, then roll the wire mesh assembly into a tubular shape, and then weld the joints of the rolled into a tubular wire mesh assembly to obtain a metal mesh assembly. Wire mesh pipe; the rolling speed is 60m / h; the welding adopts argon arc welding, and the whole welding process is protected by high-purity argon;...

Embodiment 3

[0049] like figure 1As shown, this embodiment includes a wire mesh pipe 1 and a powder porous functional layer 2 attached to the wire mesh pipe 1; The wall thickness of 1 is 2.5 mm, the aperture of wire mesh tube 1 is 100 μm, the outer diameter of wire mesh tube 1 is 30 mm, and the tube length is 700 mm; the thickness of the powder porous functional layer 2 is 600 μm, the aperture is 20 μm, and the air permeability 30m 3 / (m 2 ·KPa·h); the wire mesh is titanium mesh.

[0050] The preparation method of the composite metal porous pipe of the present embodiment comprises the following steps:

[0051] Step 1. Lay 5 titanium screens in layers to obtain a wire mesh assembly, then roll the wire mesh assembly into a tubular shape, and then weld the joints of the rolled into a tubular wire mesh assembly to obtain a metal mesh assembly. Wire mesh pipe; the rolling speed is 30m / h; the welding adopts argon arc welding, and the whole welding process is protected by high-purity argon; ...

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Abstract

The invention discloses a composite metal porous pipe which comprises a metal wire net pipe and a powder porous functional layer attached to the metal wire net pipe. The metal wire net pipe is formed by laying 3-7 layers of metal wire nets in a stacked manner and then rolling the metal wire nets. The wall thickness of the metal wire net pipe ranges from 1.5 mm to 3.8 mm, the hole diameter of the metal wire net pipe ranges from 20 microns to 200 microns, and the outer diameter of the metal wire net pipe ranges from 20 mm to 120 mm. The thickness of the powder porous functional layer ranges from 15 microns to 600 microns, the hole diameter of the powder porous functional layer ranges from 0.5 micron to 22 microns, and the air permeability is not smaller than 20 m<3>/(m<2>. KPa. h). In addition, the invention discloses a method for preparing the composite metal porous pipe. The composite metal porous pipe has the beneficial effects that the filtering precision is high, the permeability coefficient is high, and the reverse blowing and regeneration performance is good; and the hole diameter range can be adjusted according to use conditions, the application range is wide, and practical value is high.

Description

technical field [0001] The invention belongs to the technical field of preparation of composite metal porous materials, and in particular relates to a composite metal porous pipe and a preparation method thereof. Background technique [0002] Since the advent of gradient metal porous materials, it has become a research hotspot in the filtration industry because of its relatively high filtration accuracy and high filtration flux. At present, metal membrane materials based on porous powdered metals have been extensively studied and successfully commercialized. In order to achieve the purpose of high-precision and high-efficiency filtration, researchers have prepared a wide variety of metal film layers and achieved remarkable results. [0003] The Chinese patent application with publication number CN102258894A discloses "A Novel High Efficiency Metal Composite Filter Element and Its Preparation Method". It adopts a metal matrix formed by pressing and sintering metal powder an...

Claims

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Application Information

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IPC IPC(8): B22F7/08B22F5/10B01D39/12
CPCB01D39/12B01D2239/0668B01D2239/10B01D2239/1216B01D2239/1258B01D2239/1291B22F5/106B22F7/002
Inventor 汪强兵李广忠李烨杨保军刘阳洋黄愿平石英
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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