Method for increasing iron clad bonding strength of leading edge of blade

A technology of bonding strength and iron covering, which is applied in transportation and packaging, rotorcraft, aircraft, etc., can solve the problems of falling off and debonding of the iron covering of helicopter composite blades, affecting flight safety, etc., and achieves improved bonding. Effects on quality, avoiding deformation, improving reliability and safety

Inactive Publication Date: 2016-06-15
HARBIN
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

The composite material blade prepared by this process technology is easy to debond from the composite material blade, which will cause the iron coating of the helicopter composite blade to fall off, affecting flight safety

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0015] Iron-clad material 0Cr18Ni9, paddle material: carbon fiber, glass fiber composite material;

[0016] The first step: use a press-in dry sandblasting machine to sandblast the stainless steel iron-clad raw material 0Cr18Ni9, the medium is 120 mesh quartz sand, the process parameters are pressure 2.5bar, and the distance between the spray gun and the sandblasting material: 150mm-200mm Conduct sandblasting on the bonding surface of the stainless steel clad iron raw materials;

[0017] Step 2: Form the stainless steel iron-clad raw material into a shape that matches the shape of the leading edge of the blade;

[0018] Step 3: Carry out alkali degreasing treatment on the iron-coated leading edge of the completed blade;

[0019] Step 4: According to the design requirements, apply adhesive on the iron-clad bonding surface of the leading edge of the blade, and place the iron-clad blade on the leading edge of the completed composite blade;

[0020] Step 5: Molding and curing th...

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PUM

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Abstract

The invention relates to a method for increasing the iron clad bonding strength of the leading edge of a blade, which belongs to the technical field of composite materials. According to the method, before iron clad is formed, blasting treatment is performed on the bonding surface of the iron clad in advance, so that the roughness of the bonding surface of the iron clad is increased, then the iron clad is formed, thus, the roughness of the surface of the iron clad can be increased, the iron clad of the leading edge is difficult to debond from the composite blade, and the deformation of the iron clad due to the blasting treatment can be avoided. By adopting the method, the bonding quality of the stainless steel iron clad and the composite material can be effectively increased, and the reliability and safety of an airplane are increased.

Description

technical field [0001] The invention belongs to the technical field of composite materials and relates to a method for improving the iron-clad bonding strength at the leading edge of a blade. Background technique [0002] Helicopter composite material blades adopt the leading edge iron-clad protection structure, the iron-clad material is stainless steel, nickel and other metal materials, the material of the blade is composite material, the bonding process between the iron-clad and composite material blades is, firstly, forming the package Iron, then, surface-treat the shaped iron-clad using a chemical pickling process, and then glue it to the composite paddle. The composite material blade prepared by this process technology is easy to debond from the composite material blade, causing the iron coating of the helicopter composite blade to fall off, which affects flight safety. Contents of the invention [0003] The purpose of the present invention is to propose a method for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64F5/00B64C27/473B24C1/04B64F5/10
CPCB24C1/04B64C27/473B64C2027/4736
Inventor 曹磊张体磊戴晓亮王庆有林丽
Owner HARBIN
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