Method for repairing metal skin by using composite material

A composite material and skin technology, applied in the field of metal skin repair, can solve problems such as inability to meet schedule requirements, complex shape of aircraft skin, and rising cost of spare parts, etc., to speed up repair work progress, lower environmental requirements, and reduce maintenance. cost effect

Inactive Publication Date: 2012-02-01
贵州贵航无人机有限责任公司
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  • Claims
  • Application Information

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Problems solved by technology

The defect of this method is that a series of complex processes such as processing and forming, heat treatment, and surface anti-corrosion treatment are required for the plate, which is difficult to repair in a short period of time, resulting in a long cycle and unable to meet the progress requirem

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  • Method for repairing metal skin by using composite material
  • Method for repairing metal skin by using composite material
  • Method for repairing metal skin by using composite material

Examples

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Embodiment 1

[0019] Example 1. Such as figure 1 , 2 As shown, in this embodiment, the part to be repaired is the damaged area of ​​the leading edge of the wing, and the specific repair steps are as follows:

[0020] (1) Remove the burr at the damaged part first, and stop the hole at the end of the main crack, and then clean the area to be repaired with 93# gasoline and acetone in order to remove the original paint layer and oil stain on the wing surface. (2) After the cleaning agent dries, evenly brush or spray QS-7 adhesive primer on the area to be repaired. (3) Brush or spray diluted XM22B sealant on the surface of the area to be repaired, with a thickness of 0.3~0.5mm. (4) After the XM22B sealant is dry, brush the E51 epoxy resin mixed with the curing agent on the EW200 glass cloth, and then spread the EW200 glass cloth on the skin surface evenly according to the surface shape of the area to be repaired, with a thickness of Between 1~1.2mm. (5) Repeat step (4) until the layer...

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Abstract

The invention discloses a method for repairing a metal skin by using a composite material. The method comprises the following steps of: 1, cleaning a region to be repaired by using a cleaning agent; 2, brushing or spraying an adhesive first coating agent on the region to be repaired; 3, brushing or spraying a sealing agent on the surface of the region to be repaired; 4, spreading and laying glass cloth on the surface of the metal skin; 5, repeating the step 4 until the layering thickness meets the repairing requirement; 6, grinding the surface of the EW200 glass cloth to ensure that the surface is rough to be convenient for adhering a paint layer; and 7, spraying paint on the surface of the glass cloth to ensure that the color of the region to be repaired is consistent with the surrounding color. The invention simplifies process procedures, reduces spare parts, and has the characteristics of higher repairing speed, lower cost and the like.

Description

Technical field [0001] The invention involves a method of repairing a metal skin, especially the method of repairing thin metal skin with composite materials. Background technique [0002] Under normal circumstances, most of the repair of aircraft metal skin uses the same or similar metal material.The defect of this method is that a series of complex process projects such as processing molding, thermal treatment, and surface anti -corrosion treatment need to be performed. It is difficult to repair it in a short time, which will cause a long cycle and cannot meet the progress requirements.Although it can be prepared in advance for different shapes of materials that have been hotly treated and surface treatment, due to the complex shape of the aircraft skin, it is difficult to achieve everything, and the manufacturing and storage of a large number of spare parts also cause costs. Invention content [0003] The technical problem to be solved by the present invention is to provide a...

Claims

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Application Information

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IPC IPC(8): B23P6/00
Inventor 马耀陆周喜军马敏杰
Owner 贵州贵航无人机有限责任公司
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