Diffusion welding method for super-multilayer hydrogen peroxide catalytic layer net

A hydrogen peroxide and diffusion welding technology, which is applied in welding equipment, welding/welding/cutting items, non-electric welding equipment, etc., can solve the problems that the brazing technology needs to be further optimized, achieve good permeability, ensure stability, high intensity effect

Active Publication Date: 2022-07-29
西安东瑞增材科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for diffusion welding of a super-multilayer hydrogen peroxide catalytic layer network, which solves the problems to be further optimized in the existing microporous mesh micro-beam plasma arc welding and brazing technology

Method used

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  • Diffusion welding method for super-multilayer hydrogen peroxide catalytic layer net
  • Diffusion welding method for super-multilayer hydrogen peroxide catalytic layer net
  • Diffusion welding method for super-multilayer hydrogen peroxide catalytic layer net

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Furnace welding:

[0047] Put the assembly components into the vacuum furnace, and pump the vacuum furnace to 2×10-3pa and keep the vacuum degree until the heating process is completed.

[0048] The vacuum furnace indenter applies a downward pressure of 700kg on the upper end face of the upper indenter 2, gradually heats up to 660°C at a heating rate of 2°C / min, adjusts the pressure to 500kg pressure, and keeps the temperature for 15min. The diffusion welding process ends.

[0049] Cool down and cool down and take out the parts: when the temperature in the vacuum furnace reaches 50 ℃, open the cover and take out the parts. Remove the tooling of the outer sleeve 1, the upper indenter 2, the lower indenter 5, and the mandrel 3 in turn according to the reverse assembly sequence, and finally obtain an ultra-multi-layer hydrogen peroxide catalytic layer mesh diffusion welding assembly.

Embodiment 2

[0051] Furnace welding:

[0052] Put the assembly components into the vacuum furnace, and pump the vacuum furnace to 3×10-3pa to keep the vacuum degree until the heating process is completed.

[0053] The vacuum furnace indenter exerts a downward pressure of 750kg on the upper end face of the upper indenter 2, gradually increases the temperature to 680°C at a heating rate of 3°C / min, adjusts the pressure to 550kg pressure, and keeps the temperature for 20min. The diffusion welding process ends.

[0054] Cool down and cool down and take out the parts: when the temperature in the vacuum furnace reaches 75 ℃, open the cover and take out the parts. Remove the tooling of the outer sleeve 1, the upper indenter 2, the lower indenter 5, and the mandrel 3 in turn according to the reverse assembly sequence, and finally obtain an ultra-multi-layer hydrogen peroxide catalytic layer mesh diffusion welding assembly.

Embodiment 3

[0056] Furnace welding:

[0057] Put the assembled components into the vacuum furnace, and pump the vacuum furnace to 4×10-3pa and keep the vacuum degree until the heating process is completed.

[0058] The vacuum furnace indenter exerts a downward pressure of 800kg on the upper end face of the upper indenter 2, gradually increases the temperature to 700℃ at a heating rate of 5℃ / min, adjusts the pressure to 600kg pressure, and maintains the temperature for 25min. The diffusion welding process ends.

[0059] Cool down and cool down and take out the parts: when the temperature in the vacuum furnace reaches 100 ℃, open the cover and take out the parts. Remove the tooling of the outer sleeve 1, the upper indenter 2, the lower indenter 5, and the mandrel 3 in turn according to the reverse assembly sequence, and finally obtain an ultra-multi-layer hydrogen peroxide catalytic layer mesh diffusion welding assembly.

[0060] The diffusion welding method of the ultra-multi-layer hydro...

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Abstract

The invention discloses a diffusion welding method of an ultra-multilayer hydrogen peroxide catalyst layer net, the ultra-multilayer hydrogen peroxide catalyst layer net comprises a plurality of layers of microporous meshes, two ends of the plurality of layers of microporous meshes are provided with an upper pressure head and a lower pressure head, and the upper pressure head, the plurality of layers of microporous meshes and the lower pressure head are arranged in an outer sleeve; holes are formed in the middle positions of the upper pressing head, the multiple layers of microporous meshes and the lower pressing head, all the holes are combined to form a through hole, and the core rod is arranged in the through hole; the diffusion welding method is specifically carried out according to the following steps: step 1, pretreatment; step 2, assembling to obtain an assembled component; step 3, diffusion welding; and 4, cooling and taking a piece to obtain the super-multilayer hydrogen peroxide catalytic layer net diffusion welding assembly. According to the method, the permeability of micropores between the welded microporous meshes is good, the overall welding strength is high, the tool mold has the characteristic of repeated use, and the stability and reliability of batch production and use of the microporous mesh welding assembly are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of microporous mesh welding, and provides a diffusion welding method for super-multi-layer hydrogen peroxide catalytic layer meshes. Background technique [0002] Micro-porous mesh, so the name implies, is a small-aperture metal mesh or other mesh products with smaller apertures. At present, the main processing method is chemical etching, which has the characteristics of fine processing size, accurate positioning, and no processing restrictions no matter how complex the pattern is. Microporous mesh is widely used in precision filtration equipment, chemical fiber spinnerets, jet engine nozzles, electronic computer print heads, etc. [0003] At present, only a single layer and a few layers can be welded together for use. The methods that can achieve a few layers of welding include microbeam plasma arc welding and brazing. Microbeam plasma arc welding is to fix several pieces of microporous meshes together w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/02B23K20/24B23K20/26B23K101/22
CPCB23K20/026B23K20/24B23K20/26B23K2101/22Y02E60/50
Inventor 肖建文杜军飞雷栓红
Owner 西安东瑞增材科技股份有限公司
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