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Method and device for repairing corrosion damage parts

A repair method and technology for parts, applied in the field of repair of parts, can solve the problems of low bonding strength of new and old materials, inconvenient grinding process, etc., and achieve the effect of improving repair efficiency and reducing scrap rate

Active Publication Date: 2014-12-24
GUANGZHOU CIVIL AVIATION COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to ensure the quality of the repair, fiber cloth with a larger size is generally selected, that is, the repaired area is often much larger than the damaged area, which brings inconvenience to the subsequent grinding process, and the bonding strength of the old and new materials in the repaired area is often biased. Low

Method used

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  • Method and device for repairing corrosion damage parts
  • Method and device for repairing corrosion damage parts
  • Method and device for repairing corrosion damage parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] figure 2 Shown is a schematic diagram of the state of 7075 aluminum alloy components after localized corrosion. Zone I is the completely corroded material (corrosion product), zone II is the corrosion transition material, and zone III is the matrix material. The specific steps of the repair method used include:

[0039] (1) Select milling cutter and processing parameters: Since the corrosion products of 7075 aluminum alloy are similar to powder, when removing corrosion products, choose a flat end milling cutter with a slightly larger diameter to increase the removal efficiency of corrosion products. The cutter speed is 800 rpm, the moving speed of the milling cutter is 2mm / s, and the cutting amount of each layer is 0.5mm; when milling the final groove profile, a pointed milling cutter with a diameter of 2mm is selected, and the moving speed of the milling cutter is 1mm / sec, the cutting amount of each layer is 0.3mm;

[0040] (2) Prepare to remove corrosion products: ...

Embodiment 2

[0049] Figure 9 Shown is a schematic diagram of the state of the carbon fiber composite component after local corrosion. The specific steps of the repair method include:

[0050] (1) Select a flat end milling cutter with a diameter of 6mm, set the milling cutter speed to 1000 rpm, the milling cutter moving speed to 5mm / s, and the cutting amount per layer to 0.8mm; select a pointed end milling cutter with a tip diameter of 1mm , the moving speed of the milling cutter is 2mm / s, and the cutting amount of each layer is 0.3mm;

[0051] (2)~(6) are identical with embodiment 1;

[0052] (7) Replace the pointed end milling cutter, and then mill the 0.3mm thick matrix material on the basis of the formed milling envelope surface, completely remove the corrosion products, and mill out the grid, as Figure 10 As shown in , record the three-dimensional data information of the final milling surface;

[0053] (8) According to the three-dimensional data information of the milling surface ...

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Abstract

The invention relates to a method for repairing corrosion damage parts. The method comprises the following steps: automatically eliminating corrosion products layer by layer at minimal milling amount by use of a milling cutter and recording detailed three-dimensional data of a final milled surface, performing rapid repairing by use of a 3D printing method until recovering the original design shape of the part, and then performing shot peening. The invention also relates to a device for repairing corrosion damage parts. The device comprises an FDOF (Four degrees of Freedom) manipulator, wherein the front end of the manipulator is provided with a station-replaceable milling cutter and a 3D printing head. After the corrosion products are eliminated, the corrosion damage positions of the parts are repaired by virtue of the 3D printing method, so that rejection rate of the corrosion damage parts is reduced, and the repair efficiency, repair strength and reliability of the corrosion damage parts are improved. The method and the device can be applied to repair of corrosion damage parts.

Description

technical field [0001] The invention relates to the repair field of parts, in particular to a repair method and device for corrosion damaged parts. Background technique [0002] Metal materials or composite material components are often corroded during use. Statistics from domestic and foreign census data show that the annual loss due to corrosion accounts for about 3% to 5% of the GDP of each country, and some of them can be repaired and refurbished. Minor corrosion utilized. The current treatment methods for corroded parts, for a single metal material part, the first is that the degree of corrosion is relatively light, and the repair method is to remove the corroded material and then perform a simple surface anti-corrosion treatment. In this case, the strength of the component will obviously be reduced; the second is that the degree of corrosion is relatively heavy. After removing the corroded material, the corroded area must be shot peened to make up for the strength los...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00B29C73/02
CPCB23P6/00B29C73/02
Inventor 程秀全夏琴香张建荣林列书
Owner GUANGZHOU CIVIL AVIATION COLLEGE