Preparation process of metal filter layer and filter element

A technology of metal filtration and preparation process, which is applied in the field of filtration, can solve the problems of thick composite filter elements, high reject rate, unevenness, etc., and achieve the effect of high bonding strength, high yield, and not easy to crack

Active Publication Date: 2020-06-05
格锐德过滤科技(浙江)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are as follows: one is that the thickness of the composite filter element is thick and uneven, which affects the filtering effect; the ot

Method used

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  • Preparation process of metal filter layer and filter element
  • Preparation process of metal filter layer and filter element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] B. Arrange the metal mesh, roll two 1000x1000mm 12x64 purpose 316L metal mat mesh on a two-roll rolling mill and stack them vertically according to the lines, and then put them in a vacuum sintering furnace for sintering at a temperature of 1300°C , 1.0×10 1 pa, the holding time is 3.5 hours, and after the sintering is completed, use a two-roll rolling mill to flatten to a set thickness of 1.6mm to obtain a support layer, and then use a bending die to make the support layer into a shape with an outer diameter of 25mm and a length of 1000mm Round tube shape.

[0035] C. Coating the metal powder slurry on the support layer of the circular tube, the metal powder slurry is prepared as follows: 1000 grams of 316L water atomized stainless steel powder particles with a particle size of 600 / 800 mesh, 2000 grams of purified water and 6 grams of Carbomer 941 Mix and stir evenly to obtain a suspension slurry, and then use a spray gun to evenly coat the prepared suspension slurry ...

Embodiment 2

[0037] B. Arrange the metal mesh, roll two 1000x1000mm 12x64 purpose 316L metal mat mesh on a two-roll rolling mill in turn and stack them vertically according to the lines, and then sinter in a vacuum sintering furnace at a sintering temperature of 1320°C , 1.0×10 -2 pa, the holding time is 2.5 hours, and after the sintering is completed, use a two-roll rolling mill to flatten to a set thickness of 1.6mm to obtain a support layer, and then use a bending die to make the support layer with an outer diameter of 30mm and a length of 1000mm. Round tube shape.

[0038] C. Coating the metal powder slurry on the support layer of the circular tube, the metal powder slurry is prepared as follows: 600 grams of 316L water atomized stainless steel powder particles with a particle size of 800 / 1000 mesh, 1800 grams of pure water and 5.4 grams of Carbomer 941 Mix and stir evenly to obtain a suspension slurry, and then use a spray gun to evenly coat the prepared suspension slurry on the oute...

Embodiment 3

[0040] B. Arrange the metal mesh, roll two 1000x1000mm 12x64-mesh 316L metal mat-shaped mesh on a two-roll rolling mill in turn and stack them vertically according to the lines, and then put them in a vacuum sintering furnace for sintering at a sintering temperature of 1200°C , 2pa, and the holding time is 4.5 hours. After sintering, use a two-roll rolling mill to flatten to a set thickness of 1.6mm to obtain a support layer, and then use a bending die to make the support layer with an outer diameter of 25mm and a length of 1000mm. Round tube shape.

[0041]C. Coating the metal powder slurry on the support layer of the round tube, the metal powder slurry is prepared as follows: 500 grams of 500 / 700 mesh 316L water atomized stainless steel powder particles, 1500 grams of purified water and 4.5 grams of Carbomer 941 Mix and stir evenly to obtain a suspension slurry, and then use a spray gun to evenly coat the prepared suspension slurry on the outer surface of the round tube supp...

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Abstract

The invention provides a preparation process of a metal filter layer, which comprises the following steps: B, sintering a metal net, flattening the metal net to a set thickness, and preparing the metal net into a predetermined shape to obtain a support layer; C, coating the supporting layer with metal powder slurry which comprises metal powder, a liquid phase carrier and a binder, and sintering toan integrated structure to obtain the metal filter layer. According to the preparation process of the metal filter layer, the manufacturing process of a traditional process is changed, the sintered metal net is made into a preset shape and then coated with the metal powder slurry, then the sintered metal net and the metal powder slurry are sintered into a whole to form the metal filter layer, themetal filter layer is protected from being rolled or bent or subjected to compression molding and other procedures, and the yield is high.

Description

technical field [0001] The invention relates to the technical field of filtration, in particular to a preparation process of a metal filter layer and a filter element. Background technique [0002] Due to the advantages of high efficiency, energy saving and no pollution, membrane separation technology is widely used in various fields of national economy including industrial production. In the field of chemical industry, especially petrochemical industry, it involves the purification of many high-temperature, high-pressure and highly corrosive fluids, some of which are difficult to handle with high viscosity, such as oil slurry filtration, separation of S-ZORB desorbent, and heavy oil filtration and purification, etc. , all require high-performance filter elements. [0003] These filter elements must be metal alloy or ceramic filter elements capable of high temperature resistance, high pressure resistance and corrosion resistance. And many industrial productions require the...

Claims

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Application Information

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IPC IPC(8): B01D29/35B32B15/18B32B15/02B32B15/14B32B37/06B32B38/00B32B1/08B22F7/04B22F5/10
CPCB01D29/111B01D29/35B22F5/10B22F7/04B32B1/08B32B15/02B32B15/14B32B15/18B32B37/06B32B38/00B32B2262/103B32B2307/726B32B2311/30B32B2597/00
Inventor 徐小平
Owner 格锐德过滤科技(浙江)有限公司
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