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Method for preparing integral type seamless metal fiber perforated pipe and tangling device

A metal fiber, integral technology, applied in the field of material processing and manufacturing, can solve the problems of affecting work efficiency, small thickness of fiber perforated plate, and restricting the application of sound absorption of materials, etc., to achieve the effect of convenient realization, easy process and saving welding process

Active Publication Date: 2011-04-27
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional metal fiber porous material products are all processed from metal fiber porous plates, and the more commonly used tubular structural elements are also made of metal fiber porous plates through rolling and welding. A weld with a different structure from other parts, which will seriously affect its working efficiency during the use of the product, no matter what the environmental conditions are
In addition, this process requires the thickness of the fiber porous plate to be small, which limits the application of the material in sound absorption, heat transfer and filtration

Method used

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  • Method for preparing integral type seamless metal fiber perforated pipe and tangling device
  • Method for preparing integral type seamless metal fiber perforated pipe and tangling device
  • Method for preparing integral type seamless metal fiber perforated pipe and tangling device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of monolithic seamless FeCrAl fiber porous muffler pipe:

[0027] Step 1, machining the unsintered FeCrAl fiber blank mat with a wire diameter of 6 μm, and smoothing the surface;

[0028] Step 2. Oxidize the three-lobe split pipe mold with a length of 100mm at a temperature of 1100°C for 3 hours; the inner mold support body 1 of the three-lobe split pipe mold has an outer diameter of 79mm and a pipe wall thickness of 2mm Al 2 o 3 Tube, three-lobed split-type outer mold 2 is a three-lobed split-type FeCrAl tube with an inner diameter of 140 mm and a tube wall thickness of 2 mm;

[0029] Step 3, entangle the FeCrAl fiber blank felt after the flattening treatment on the inner mold support body 1 of the oxidized three-lobed split pipe mold by rolling forming, the entanglement thickness is 30mm, and then Pack into the three-lobe split-type outer mold 2 and close;

[0030] Step 4. Fasten the closed three-lobed split pipe mold with metal fiber blank felt 4 (FeC...

Embodiment 2

[0032] Preparation of monolithic seamless copper fiber porous heat transfer tube:

[0033] The preparation method of this example is the same as that of Example 1. The difference is that the metal fiber blank felt is copper fiber blank felt, and an integral seamless copper fiber porous heat transfer tube is prepared. The integral seamless copper fiber porous heat transfer tube The heat pipe can be used for heat recovery and reuse of high temperature water or gas.

Embodiment 3

[0035] Preparation of integral seamless stainless steel fiber porous filter tube:

[0036] The preparation method of this example is the same as that of Example 1, and the difference is that the metal fiber blank felt is stainless steel fiber blank felt, and an integral seamless stainless steel fiber porous filter tube is prepared, and the integral seamless stainless steel fiber porous filter tube is It can be used as a gas-solid or gas-liquid separation element.

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Abstract

The invention provides a method for preparing an integral type seamless metal fiber perforated pipe. The method comprises the following steps of: 1, machining and leveling an unsintered rough metal fiber felt; 2, performing oxidation treatment on three-segment separable type tubular die; 3, tangling the rough metal fiber felt to an internal support body of the three-segment separable type tubular die by a rolling shaping method, and loading into a three-segment separable type external die; and 4, sintering at high temperature, cooling along with a furnace and demolding so as to obtain the integral type seamless metal fiber perforated pipe. For implementing the method, the invention also discloses a tangling device of the integral type seamless metal fiber perforated pipe. By using the method and the device, the metal fiber perforated pipe can be integrally shaped, pipe reeling and welding processes in the prior art are saved, the problem of influence of a joint on the material integral performance during re-shaping can be solved, and a controllable range of the thickness and porosity of a material is increased.

Description

technical field [0001] The invention belongs to the technical field of material processing and manufacturing, and in particular relates to a preparation method and an entanglement device of an integral seamless metal fiber porous pipe. Background technique [0002] Metal fiber porous materials have been successfully applied in the fields of filtration, separation, sound attenuation, shock absorption and heat transfer. It has a fully straight-through pore structure, and the structure is highly controllable. Its porosity can reach up to 95% and the lowest can reach 60%. The thinnest product thickness can be 1mm. The sound absorption coefficient of the sound-absorbing pad made of metal fiber porous material is as high as 90%, and the average sound insulation of the made sound insulation material reaches 30dB. In the field of filtration and separation, the metal fiber porous material has a filtration accuracy of 2.5 μm to 70.0 μm. Conventional metal fiber porous material produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F5/12B22F3/11
Inventor 敖庆波汤慧萍朱纪磊李程支浩王建忠
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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