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Helicopter aluminum alloy casing outer hoop cementing method

An aluminum alloy, helicopter technology, applied in chemical instruments and methods, cleaning methods and utensils, cleaning methods using liquids, etc., can solve the problems of difficult to implement bonding methods, achieve stable and reliable work, meet work requirements, and ensure reliability. sexual effect

Inactive Publication Date: 2018-05-08
HARBIN DONGAN ENGINE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The outer surface of the aluminum alloy casing of the helicopter needs to be bonded with shock-absorbing rubber and steel outer hoop in sequence, and the bonding must not crack when the parts are exposed to high temperatures above 120°C and continuous vibration. The bonding quality is stable and reliable, and shock absorption can be achieved. The effect of noise reduction, to meet the above technical requirements, the conventional bonding method is difficult to achieve, there is no mature technology in China

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0030] The outer diameter (φ730mm) of the aluminum alloy lower receiver of an aviation product is glued with shock-absorbing rubber and steel outer hoop. There is no cracking at the joint, the bonding quality is stable and reliable, the effect of shock absorption and noise reduction is achieved, and the working requirements of the parts under special working conditions are met. The steps are as follows:

[0031] (1) Prepare the parts, and carry out dry blasting treatment on the glued surface of the parts and the glued surface of the outer hoop. The sand blasting uses No. 100 clean abrasives, the pressure is 0.5Mpa, and the surface after sand blasting shows a rough state without metallic luster. There should be no missed blowing or overblowing. After sand blowing, use clean and dry compressed air to blow off the floating ash and sand particles on the surface. Record the end time of sand blowing and immediately transfer to the next process. After 1.2 hours after sand blowing to ...

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Abstract

The invention relates to a helicopter aluminum alloy casing outer hoop cementing method. Through carrying out sand blasting processing on a cemented surface, simultaneously combining protecting and cleaning steps, gelatinizing, fastening, solidifying, and coating a sealant, the reliability in cementing is ensured; through determining the conditions for optimizing an outer hoop shape, testing the strength of a cementing compound, and solidifying, aluminum alloy parts on an engine are not cracked at cemented parts under the conditions of continuous vibrating at the high temperature of more than120 DEG C, are stable and reliable in cementing quality, and meet the working requirement of the parts under a special working condition.

Description

technical field [0001] The invention relates to a bonding method, in particular to a bonding method for an outer hoop of an aluminum alloy casing of a helicopter. Background technique [0002] The outer surface of the aluminum alloy casing of the helicopter needs to be bonded with shock-absorbing rubber and steel outer hoop in sequence, and the bonding must not crack when the parts are exposed to high temperatures above 120°C and continuous vibration. The bonding quality is stable and reliable, and shock absorption can be achieved. The effect of noise reduction, to meet the above technical requirements, is difficult to achieve by conventional bonding methods, and there is no mature technology in China. Contents of the invention [0003] The purpose of the present invention is to provide a method for gluing the outer hoop of the aluminum alloy casing of a helicopter, which can realize the bonding of shock-absorbing rubber and steel outer hoop on the aluminum alloy material....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C65/52B29C35/02B08B3/08B24C1/06B29L31/30
CPCB08B3/08B24C1/06B29C35/02B29C65/52B29L2031/3088
Inventor 赵立柱王小伟马文华宋丙红栾占威成远清
Owner HARBIN DONGAN ENGINE GRP
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