A kind of preparation method of porous foamed iron-chromium-aluminum alloy material

An iron-chromium-aluminum alloy and porous foam technology, which is applied in the field of alloy material preparation, can solve the problems of unreasonable process flow and process parameters, low thickness of porous foam alloy material, poor high temperature resistance, poor corrosion resistance, etc., and achieves convenient quality. Control, excellent corrosion resistance, meet the effect of high temperature resistance

Inactive Publication Date: 2011-12-21
JILIN ZHUOER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the existing electrodeposition method related to the preparation method of the present invention is that the selected process flow and process parameters are unreasonable, the thickness of the prepared porous foam alloy material is low, usually below 5mm, and the porosity is low, usually at 80-90%, poor high temperature resistance and corrosion resistance, cannot meet the requirements of high temperature resistance, corrosion resistance and other harsh working conditions, and the preparation cost is high

Method used

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Examples

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Comparison scheme
Effect test

preparation example Construction

[0019] The preparation method of a kind of porous foam iron-chromium-aluminum alloy material of the present invention comprises the following steps:

[0020] 1) Choose one of polyurethane through-hole three-dimensional network foam sponge, polyether through-hole three-dimensional network foam sponge, fiber mesh or non-woven porous material, with a thickness of 5-100mm and the number of holes per inch PPi is 5-130 between

[0021] 2) The porous material described in step 1) is impregnated with a water-based polymer adhesive at room temperature, and the water-based polymer adhesive is isocyanate;

[0022] 3) Use powder spraying equipment to uniformly spray 5-10 nanometer chromium powder and high-activity aluminum powder on the surface of the porous material where the isocyanate is impregnated in step 2) under the wind pressure of 0.8MPa and the powder feeding rate of 3kg / h;

[0023] 4) Dry the porous material sprayed with chromium powder and aluminum powder in step 3) with a m...

Embodiment 1

[0031] Embodiment 1: a kind of preparation method of porous foamed iron-chromium-aluminum alloy material comprises the following steps:

[0032] 1) Use fiber mesh with a thickness of 5mm and PPi of 5 holes per inch;

[0033] 2) impregnating the porous material described in step 1) with isocyanate at room temperature;

[0034] 3) Use powder spraying equipment to uniformly spray 5-10 nanometer chromium powder and high-activity aluminum powder on the surface of the porous material where the isocyanate is impregnated in step 2) under the wind pressure of 0.8MPa and the powder feeding rate of 3kg / h;

[0035] 4) Dry the porous material sprayed with chromium powder and aluminum powder in step 3) with a mesh-belt electric furnace at a drying temperature of 50°C and a mesh speed of 15m / h in the electric furnace;

[0036] 5) Put the porous material dried and sprayed with chromium powder and aluminum powder in step 4) into a 230-mesh screen vibrator, shake out the excess chromium powder...

Embodiment 2

[0042] Embodiment 2: The preparation method of another kind of porous foamed iron-chromium-aluminum alloy material comprises the following steps:

[0043] 1) Use polyurethane through-hole three-dimensional reticulated foam sponge with a thickness of 80mm and PPi of 100 holes per inch;

[0044] 2) impregnating the porous material described in step 1) with isocyanate at room temperature;

[0045] 3) Using powder spraying equipment, under the wind pressure of 0.8MPa and the powder feeding rate of 3kg / h, evenly spray 8nm chromium powder and high-activity aluminum powder on the surface of the porous material where the isocyanate is impregnated in step 2);

[0046] 4) Dry the porous material sprayed with chromium powder and aluminum powder in step 3) with a mesh-belt electric furnace at a drying temperature of 55°C and a mesh speed of 15m / h in the electric furnace;

[0047] 5) Put the porous material dried and sprayed with chromium powder and aluminum powder in step 4) into a 240-me...

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Abstract

The invention is a preparation method of porous foamed iron-chromium-aluminum alloy material, which is characterized in that: the steps include: select porous material, soak water-based polymer adhesive at normal temperature; mix chromium powder and high-activity aluminum The powder is evenly sprayed on the surface of the porous material impregnated with the water-based polymer adhesive; drying; the excess chromium powder and aluminum powder are separated from the porous material matrix; the chrome-aluminum porous material is dip-coated with conductive adhesive; Electrodeposition of iron after warm curing treatment; redox treatment; secondary diffusion treatment of chromium and aluminum to obtain porous foamed iron-chromium-aluminum alloy material. Its preparation method is scientific, the selected process parameters are reasonable, the quality is easy to control, the cost is low, and it can be prepared with light weight, large specific surface area, ultra-thickness, thickness is 5-100mm, high porosity 96-99.9%, high temperature resistance and corrosion resistance. Excellent, able to meet the requirements of high temperature resistance, corrosion resistance and other harsh working conditions. It is especially suitable as high-temperature filtration, chemical catalysis, carrier, burner gas distribution and high-temperature flame-retardant materials.

Description

technical field [0001] The invention relates to a preparation method of an alloy material, which is a preparation method of a porous foamed iron-chromium-aluminum alloy material. Background technique [0002] Porous foam alloy material can be widely used in filtration, chemical industry, energy, vibration reduction, sound absorption, damping, heat insulation, heat dissipation and flame retardancy due to its small bulk density, large specific surface area, uniform structure, good mechanical properties and processing performance. field. Especially with the continuous development of science and technology, the dependence on porous foam alloy materials has been further used in harsh working conditions such as high temperature resistance and corrosion resistance. [0003] There are many kinds of preparation methods for existing porous foam alloy materials, which are classified according to the state of the metal to be processed: 1. The method based on metal melt; 2. The method b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/08
Inventor 辛长军边树华
Owner JILIN ZHUOER TECH
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