Preparation method of powder net composite porous metal film

A technology of porous metal and thin film, which is applied in the field of preparation of powder mesh composite porous metal thin film, which can solve the problems of easy corrosion and temperature difference, and achieve the effects of low production cost, low defect rate and high filtration accuracy

Pending Publication Date: 2021-07-30
WESTERN BAODE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a preparation method of powder mesh composite porous metal film

Method used

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  • Preparation method of powder net composite porous metal film
  • Preparation method of powder net composite porous metal film
  • Preparation method of powder net composite porous metal film

Examples

Experimental program
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Example Embodiment

[0031] The present invention provides a method for preparing a powder composite porous metal film, such as figure 1 As shown, a plasticizer, a thickener, an organic solution or deionized water is added, and the dispersion is added, and finally formulated into a high viscosity slurry system. In the extruder 1 of the formulated high viscosity slurry system, in the pressing machine 1 of the head mounting the slit-type die, passed from the head extruded film to the twin steel rolling mill 3, through the two-side composite film, two Metal film blank composite single layer wire mesh 4, composite the film blank with the wire mesh, form a symmetrical film structure, i.e., a powder composite porous metal film body 5, and then sintered A powder sheet composite porous metal film having uniform aperture and thickness is prepared. Specifically, the following steps:

[0032] Step 1, the thickener is mixed with the organic solution or deionized water to mix uniform from 1: 9 to 20, thoroughly di...

Example Embodiment

[0038] Example 1

[0039] 1. The PVB ethanol solution was prepared at a mass ratio of 1:15. After aging 24 h, the propanol and the PVB ethanol solution were mixed with a mass ratio of 1:20 to obtain a mixed liquid.

[0040] 2, put an average particle size 15 μm 3 Al alloy powder and mixed liquid are mixed with 5: 1 mass ratio, slowly add metal powder, stirring to obtain a viscous slurry system;

[0041] 3. Pour the viscous slurry into two extruders, extruded from the size of 300 mm × 200 μm slit mold opening, slowly transfer the conveyor to the two rolling mill; from the top of the middle Place a wide 350mm 60 mesh Fecral single-layer wire mesh, composite two-side film blank under a rolling force 30t, and the rolling speed is accurately matched to the conveyor belt, and the powder mesh composite porous metal film blank is obtained.

[0042]4, cut the powder net composite porous metal film blank into a strip shape of 2000mm × 300 mm, laying film blank, screen arrangement of 60 mesh...

Example Embodiment

[0045] Example 2

[0046] 1. Futured PVB isopropanol solution at a mass ratio of 1: 20, and after 24 h, the propanol and PVB isopropanol solution were stirred with a mass ratio of 1:15 to give a mixed liquid.

[0047] 2, 316L stainless steel powder and mixed liquid of the average particle size of 20 μm are mixed with a mass of 6: 1, slowly add metal powder, stirring to obtain a viscous slurry system;

[0048] 3. Pour the viscous slurry into two extruders, extruded from the size of 800 mm × 500 μm slit mold opening, slowly transferred to the two rolling mill; from the top of the middle Place a wide range of 900mm 40 mesh 316L stainless steel single-layer screen, composite two-sided film blank under the rolling force 100T, and the rolling speed is accurately matched to the conveyor belt, preparing the powder mesh composite porous metal film blank;

[0049] 4, cut the powder net composite porous metal film blank as a strip of 2000mm × 800 mm, laying the film blank, screen arrangement...

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Abstract

The invention discloses a preparation method of a powder net composite porous metal film, which comprises the steps of 1, uniformly mixing metal powder with a plasticizer, a thickening agent and an organic solvent or deionized water according to a certain proportion to prepare high-viscosity slurry; 2, extruding the high-viscosity slurry into a strip-shaped film blank through a slit-type die opening by using an extruding machine, conveying the strip-shaped film blank to two rolling mills through a conveying belt, and rolling the strip-shaped film blank into a strip-shaped powder net composite porous metal film blank through composite film blanks on the two sides and a composite single-layer metal wire net in the middle; and 3, laying an isolating layer on the strip-shaped powder net composite porous metal film blank through aluminum oxide powder, conducting degreasing and sintering in a hydrogen sintering furnace, and then obtaining the powder net composite porous metal film. The preparation process is simple, the cost is low, the efficiency is high, and the prepared powder net composite porous metal film is uniform in pore size distribution, small in maximum pore size, high in permeability coefficient and capable of being widely applied to the fields of flue gas dust removal, water purification and the like.

Description

technical field [0001] The invention belongs to the technical field of filter materials, and in particular relates to a preparation method of a powder mesh composite porous metal film. Background technique [0002] Bag-type flue gas dust removal filters, especially high temperature resistant and corrosion resistant dust removal filter bags, have been widely used in the field of environmental protection, thermal power plants, cement plants, metallurgical plants and other fields. The current main materials of dust filter bags are glass fiber, polytetrafluoroethylene and polyphenylene sulfide (PPS). The maximum service temperature is only 200°C, which cannot be used in higher temperature and corrosive environments. Metal materials, especially nickel-based superalloys, Fe-Al intermetallic compounds, iron-based superalloys and other materials have high temperature resistance and corrosion resistance, but the forming method of porous metal powder is generally unable to prepare ult...

Claims

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Application Information

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IPC IPC(8): B01D71/02B01D69/02B01D67/00B01D46/54C02F1/44
CPCB01D71/022B01D69/02B01D67/0039B01D67/0041B01D46/0001B01D46/543C02F1/44
Inventor 王耀辉曹卜元成凯
Owner WESTERN BAODE TECH CO LTD
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