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Wrought superalloy and stainless steel gas compressor rotor blade tip repair method and tool

A technology for deforming high-temperature alloys and compressor rotors, which is applied in the coating process and coating of metal materials, can solve the problems of interference in the process of equipment, difficulty in clamping and positioning of parts, etc., so as to improve repair efficiency and quality The effect of small amount and fine grain

Active Publication Date: 2020-11-20
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, selective laser melting (SLM) and electron beam selective melting (EBM) are processes used to directly manufacture parts. There is no method for repairing parts before. To use them for blade tip repair needs to overcome many difficulties: the clamping of parts Difficulty in positioning, parts interfere with the equipment process, there is no 3D digital model in the repair part, it is difficult to accurately position the laser and electron beam in the repair area when printing parts, and the combination of printing materials and base materials, etc.

Method used

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  • Wrought superalloy and stainless steel gas compressor rotor blade tip repair method and tool
  • Wrought superalloy and stainless steel gas compressor rotor blade tip repair method and tool
  • Wrought superalloy and stainless steel gas compressor rotor blade tip repair method and tool

Examples

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specific example 1

[0049] EOS M290 laser selective melting (SLM) equipment was used to repair the wear damage of the blade tip of a certain type of engine GH4169G deformed superalloy compressor blade. The specific steps are as follows:

[0050] S1. Tooling design and blade clamping: Design a tooling to assist compressor blade positioning, clamping and laser selective melting (SLM) repair. For the designed tooling shape and clamping method, see Figure 1 ~ Figure 3 .

[0051] see Figure 1 to Figure 5 , The tooling designed in the present invention includes an upper base plate 1 , a support plate 2 , a lower base plate 3 , locking blocks 4 and bolts 5 .

[0052] The size of the upper base plate 1 is 252mm (length) × 252mm (width) × 10mm (thickness), and a through hole with the same size and shape as the blade tip is provided at the blade installation position, see figure 1 with figure 2 ;

[0053] The size of the support plate 2 is 252mm (height) × 200mm (length) × 5mm (thickness), which is...

specific example 2

[0070] Arcam A2X Electron Beam Selective Melting (EBM) equipment was used to repair the wear damage of the blade tip of a 2Cr13 stainless steel compressor blade of a certain type of engine. The specific steps are as follows:

[0071] S1. Tool design and blade clamping: Design a tool to assist blade positioning, clamping and electron beam melting (EBM) repair. For the designed tooling shape and clamping method, see Figure 1 ~ Figure 3 .

[0072] see Figure 1 to Figure 5 , The tooling designed in the present invention includes an upper base plate 1 , a support plate 2 , a lower base plate 3 , locking blocks 4 and bolts 5 .

[0073] The size of the upper base plate 1 is 252mm (length) × 252mm (width) × 12mm (thickness), and a through hole with the same size and shape as the tip of the blade is provided at the blade installation position, see figure 1 with figure 2 ;

[0074] The size of the support plate 2 is 252mm (height) × 210mm (length) × 6mm (thickness), which is use...

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Abstract

The invention belongs to the technical field of aero-engine maintenance and relates to a wrought superalloy and stainless steel gas compressor rotor blade tip repair method and tool. According to themethod, repairing of the tip of a gas compressor rotor blade is completed through a selective laser melting or selective electron beam melting process; by the aid of the tool, the blade can be arranged in a forming area of selective laser melting or selective electron beam melting equipment and the tip of the blade can be formed; data are obtained through 3D scanning to conduct reverse modeling toobtain a model requiring repair forming and the related position information, the corresponding tool is designed for clamping the blade; the structure and form of the tool are not limited, and the tool can be used for completing blade clamping, auxiliary locating and position correction; after locating correction, printing repair forming is carried out, and finally, aftertreatment and detection are completed; and the locating precision for blade repairing is controlled well. Moreover, the wrought superalloy and stainless steel gas compressor rotor blade tip repair method and tool have the advantages of small thermal input, fine grain particles, good mechanical performance, little deformation, good surface roughness, high dimensional precision, near-net forming without machining, rapid andefficient forming and the like.

Description

technical field [0001] The invention belongs to the technical field of aero-engine maintenance, and relates to the repair of key parts of the engine, in particular to a repair method and tooling for deformed superalloy and stainless steel compressor rotor blade tips. Background technique [0002] The working environment of deformed superalloy and stainless steel compressor rotor blades is high temperature and high pressure, and the blade tip is easily damaged, requiring a lot of blade tip repair work. The traditional repair method is to use welding techniques such as laser welding to surfacing on the top of the blade, and then perform machining and grinding to remove excess material to complete the repair. This method has many problems such as large welding deformation, large heat input affecting the structure and performance of the blade, poor surface roughness, poor dimensional accuracy, difficult machining, low efficiency, and high cost. Therefore, there is an urgent nee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
CPCC23C24/106Y02P10/25
Inventor 张学军孙兵兵赵海生秦仁耀张强
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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