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Manufacturing method for nickel-copper alloy sintered mesh pipe

A technology of nickel-copper alloy and wire mesh, which is applied in the field of preparation of high-permeability filtration and separation materials, and can solve problems such as subsequent processing of filter elements not involved in the sintering process of sintering mesh

Inactive Publication Date: 2015-04-22
江苏云才材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The utility model patent "Monel nickel-copper alloy sintered mesh" (CN201220167142.3) and the utility model patent "Monel nickel-copper alloy sintered mesh fluidized plate" (CN201220167141.9) both involve Monel 400 nickel-copper alloy sintered wire The preparation of the net, but its content does not involve the sintering process of the sintered net and the subsequent processing of the filter element, but only optimizes the structure of the sintered net (support layer, control layer, protective layer, etc.). However, Inmonel 400 The material properties of nickel-copper alloy and its wire mesh make the filter element need to overcome many technical difficulties such as sintering, welding, and machining after-treatment during the preparation process.
Monel 400 nickel-copper alloy wire mesh is used as raw material to make sintered wire mesh filter tube, which has excellent filtration performance and dirt holding performance, but there is no data report yet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Manufacture Monel 400 nickel-copper alloy sintered wire mesh pipe with a diameter of 65mm, a wall thickness of 5mm, and a length of 1000mm

[0018] Step 1, laying the net: according to the requirements for the filtration performance and compressive strength of the wire mesh tube, select the Monel 400 wire mesh with specific specifications (wire diameter and mesh size), and follow the support mesh, transition mesh, precision control mesh, Laying and leveling the protection nets in sequence; the number of net layers is 7, including 2 transition nets, 1 precision control net (650 mesh) and 1 protection net;

[0019] Step 2, sintering: Wrap the stencil obtained in step 1 with specially treated Monel 400 wire mesh, put it in a vacuum furnace for sintering, place a Monel 400 alloy pressure plate on the stencil before sintering to pressurize, the pressure 30kg / m 2 ; The sintering temperature is 1250°C, and the vacuum degree is greater than 3×10 -2 Pa, the holding time is 6 h...

Embodiment 2

[0027] Manufacture Monel 400 nickel-copper alloy sintered wire mesh pipe with a diameter of 50mm, a wall thickness of 3.5mm, and a length of 800mm

[0028] Step 1, laying the net: according to the requirements for the filtration performance and compressive strength of the wire mesh tube, select the Monel 400 wire mesh with specific specifications (wire diameter and mesh size), and follow the support mesh, transition mesh, precision control mesh, Laying and leveling the protection nets in order; the number of net layers is 5 layers, including 1 layer of transition net, 1 layer of precision control net (1100 mesh) and 1 layer of protection net;

[0029] Step 2, sintering: Wrap the stencil obtained in step 1 with specially treated Monel 400 wire mesh, put it in a vacuum furnace for sintering, place a Monel 400 alloy pressure plate on the stencil before sintering to pressurize, the pressure 50kg / m 2 ; The sintering temperature is 1200°C, and the vacuum degree is greater than 3×10...

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PUM

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Abstract

The invention discloses a manufacturing method for a nickel-copper alloy sintered mesh pipe. The manufacturing method includes the steps of mesh laying, sintering, cutting, pipe reeling, welding, acid pickling and heat treatment. The nickel-copper alloy sintered mesh is made of monel material 400 and has the advantages of being high in acid-base resistance, resistant to high temperature, wide in application range and the like. The mesh pipe is a filter element high in permeability, the filter precision of the mesh pipe is 3 microns-5 microns, the filter efficiency of the mesh pipe is 99.8%, the permeability coefficient of the mesh pipe is greater than or equal to 20 m<3> / m<2>*kPa*h, and the problems that a powder sintered filter pipe made of the same metal material is poor in permeability, small in pollutant holding quantity, poor in reverse blowing effect and the like are solved effectively.

Description

technical field [0001] The invention relates to a preparation method of a high-permeability filter separation material, in particular to a preparation method of a nickel-copper alloy sintered wire mesh pipe. Background technique [0002] The sintered metal mesh filter element is an important member of the sintered metal filter element family. Compared with the sintered metal powder filter element, it has the advantages of large air flow, large dirt holding capacity, and thorough backflushing, and has been widely used in industrial In the process of gas-solid, liquid-solid separation and many other core areas. Monel 400 nickel-copper alloy has always been the core material used in cutting-edge fields such as petrochemical industry, nuclear industry, and national defense industry because of its excellent high temperature resistance, oxidation resistance, and corrosion resistance. Influenced by factors such as low precision, the application of nickel-copper alloy sintered wire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/20
Inventor 刘忠军
Owner 江苏云才材料有限公司
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