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Sealing method of fastener

A process method and fastener technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve problems such as lack of experience for reference

Inactive Publication Date: 2012-09-19
XIAN AIRCRAFT IND GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there is currently no experience to draw on using the sealing cap sealing process method

Method used

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  • Sealing method of fastener
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  • Sealing method of fastener

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Embodiment Construction

[0016] Referring to the accompanying drawings, the sealing cap 1 is a prefabricated cap-shaped rubber product with small size and soft characteristics. see Figure 4 , on the aircraft body structure 7 there are fasteners 5 that need to be sealed and are made of screws and nuts, and the sealing cap 1 is used to enclose the fasteners 5 . During operation, the size of the sealing cap 1 must be selected to match the fastener 5 that needs to be packaged, and the applicable sealant 4 and injection tool 3 must be selected. The specific sealing process is that the operators hold the sealing cap 1 and use the The mouth of the sealing cap is tilted outward, and the central axis of the sealing cap is at an angle of 45o with the ground; the glue injection nozzle 2 of the glue injection tool is closely attached to the inner bottom surface of the seal cap 1; start the glue injection tool 3 to inject glue, and at the same time Slowly move the glue injection tool 3 outward, and make the glue...

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Abstract

The invention relates to a sealing method of a fastener. The sealing method comprises the following steps of: selecting a sealing cap with the size matched with the fastener; injecting sealant with the 2 / 3 of volume into the sealing cap by using a sealant injector; and buckling the sealing cap on the fastener head perpendicularly and pressing tightly with a hand so that the bottom edge of the sealing cap is tightly attached to the surface of the structure.

Description

technical field [0001] The invention relates to the field of sealing of aircraft structures, in particular to a process method of enveloping and sealing the fasteners of the overall fuel tank of the aircraft. Background technique [0002] Sealing caps are mainly used for sealing the head of aircraft fasteners. At present, the number of fasteners used in an aircraft reaches tens of thousands. The existing sealing technology is to use glue guns, syringes or small coating tools to apply manually. Application of sealant, this sealing method may have hidden dangers of incomplete sealing, not only cannot control the amount of sealant, but also causes waste of sealant. According to information, foreign companies such as Airbus, Boeing and other advanced airlines in the world have chosen to use sealing caps to seal the fastener heads, such as Boeing's aircraft structure sealing process specifications BAC500 and BAC 5361. Among them, the process specification BAC 5361 requires that ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/14
Inventor 袁红璇岳瑛蔡鸣豪
Owner XIAN AIRCRAFT IND GROUP
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