Nanometer iron powder special for shielding electromagnetic wave and radar wave in glass cockpit of airplane

A technology of nano-iron powder and radar wave, applied in the direction of magnetic/electric field shielding, electrical components, etc., can solve the problem of incomplete shielding effect of radar wave nano-metal powder

Inactive Publication Date: 2010-06-30
王惠民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of incomplete shielding effect of electromagnetic and radar wave shielding nano metal powder used in the aircraf

Method used

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  • Nanometer iron powder special for shielding electromagnetic wave and radar wave in glass cockpit of airplane
  • Nanometer iron powder special for shielding electromagnetic wave and radar wave in glass cockpit of airplane
  • Nanometer iron powder special for shielding electromagnetic wave and radar wave in glass cockpit of airplane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1, a special nano-iron powder for electromagnetic and radar wave shielding in the glass cockpit of an aircraft is made by the following method. In the case of -5°C, the frequency of high-frequency cutting is set at 6000 times per minute. Production, Nano-iron powder with special stealth technology for processing powder particles in the form of spheres. Then use the "cyclone classification process" to sort out (25nm as an example) powder materials with concentrated particle distribution of D3=21nm D25=22.1nm D50=25nm D75=27.2nmD97=30.3nm, and then use the "DQ coating method "Continue the anti-oxidation coating of iron powder particles with a thickness of 2nm-3nm, so that the anti-oxidation time can reach more than 90 hours.

[0018] The cutting machine used is as figure 1 As shown, the cutting machine structure includes a body 4 with a cooling system. The body 4 is provided with a feed port 2 and an inert gas inlet 1. In the body 4 (the lower end of the feed por...

Embodiment 2

[0024] Example 2, a special nano-iron powder for electromagnetic and radar wave shielding in the glass cockpit of an aircraft is made by the following method. It is produced and processed under the condition of 0°C and the frequency of high-frequency cutting is set at 5500 times per minute. The shape of the powder particles is a spherical nano-iron powder with special stealth technology. Then use the "cyclone classification process" to sort out (25nm as an example) powder materials with concentrated particle distribution of D3=21nm D25=22.1nm D50=25nm D75=27.2nmD97=30.3nm, and then use the "DQ coating method "Continue the anti-oxidation coating of iron powder particles with a thickness of 2nm-3nm, so that the anti-oxidation time can reach more than 90 hours.

[0025] According to the characteristics of stealth technology, the coated powder material is input into a high-speed grinder for surface treatment of powder particles, so that the surface of the powder particle material ...

Embodiment 3

[0027] Embodiment 3, a special nano-iron powder for electromagnetic and radar wave shielding in the glass cockpit of an aircraft is made by the following method. Under the condition of -3°C, the frequency of high-frequency cutting is set at 5750 times per minute. Nano-iron powder with special stealth technology for processing powder particles in the form of spheres. Then use the "cyclone classification process" to sort out (25nm as an example) powder materials with concentrated particle distribution of D3=21nm D25=22.1nm D50=25nm D75=27.2nmD97=30.3nm, and then use the "DQ coating method "Continue the anti-oxidation coating of iron powder particles with a thickness of 2nm-3nm, so that the anti-oxidation time can reach more than 90 hours.

[0028] According to the characteristics of stealth technology, the coated powder material is input into a high-speed grinder for surface treatment of powder particles, so that the surface of the powder particle material is smooth and the sphe...

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Abstract

The invention relates to a preparation method of metal nanometer powder, in particular to a nanometer iron powder special for shielding electromagnetic wave and radar wave in a glass cockpit of an airplane. The nanometer iron powder solves the problem that the existing nanometer metal powder can not completely shield the electromagnetic wave and the radar wave in the glass cockpit of the airplane. The preparation method comprises the steps of: machining raw materials into nanometer iron powder which has the shape of spheriform powder grain and has special stealth technology under the conditions that the temperature is -5 to 0 DEG C and the high-frequency cutting times is 5500-6000 times/minute; respectively screening out the powder material with centralized grain distribution with D3=21nm, D25=22.1nm, D50=25nm, D75=27.2nm and D97=30.3nm; and packaging in an anti-oxidation way, processing a surface and filling magnetism. The nanometer iron powder solves the problems of the film coating of an ion metallic coating reflecting film and the maintaining when in use, and can block the electromagnetic wave radiation between instruments of the airplane and the external part of a cockpit of the air such as equipment of aviators.

Description

technical field [0001] The invention relates to a preparation method of metal nano powder, in particular to a special nano iron powder for electromagnetic and radar wave shielding in aircraft glass cockpits. Background technique [0002] At present, ion-plated metal reflective film is mainly used in the world. This technology is mainly to prevent the equipment of the aircraft pilot and the equipment in the cockpit of the aircraft from reflecting electromagnetic waves, thereby being detected by the enemy's airborne early warning aircraft. If this layer of metal reflective film is coated on the glass of the aircraft cockpit, the electromagnetic signals in the aircraft cockpit cannot be reflected outside the aircraft, and the detection waves emitted by the enemy cannot enter the cockpit that can reflect electromagnetic echoes. reduce the chance of being discovered. In addition, the connection points and surfaces of the cockpit have also been specially treated to minimize the ...

Claims

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Application Information

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IPC IPC(8): B22F1/02B22F9/04H05K9/00
Inventor 王惠民
Owner 王惠民
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