Process method for improving manufacturing accuracy of aluminum-alloy open-type integral impeller

A technology of integral impeller and manufacturing precision, applied in the field of open integral impeller processing technology, to achieve the effect of improving stability, good product quality and improving reliability

Inactive Publication Date: 2015-05-27
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention aims to solve the above technical problems in the process of 2A50 aluminum alloy material open integral impeller system parts, and provides a process method for i

Method used

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  • Process method for improving manufacturing accuracy of aluminum-alloy open-type integral impeller
  • Process method for improving manufacturing accuracy of aluminum-alloy open-type integral impeller
  • Process method for improving manufacturing accuracy of aluminum-alloy open-type integral impeller

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Embodiment Construction

[0053] This example is manufactured as attached Figure 1 to Figure 3 For a high-performance integral impeller shown, the part height of the integral impeller is H=68mm, and the outlet diameter is D 出 =Φ120mm, impeller inlet diameter is D 进 =Φ82mm, blade height H at the inlet end 出 =27.1mm, blade height H at the outlet end 进 =9.58mm, the thinnest blade thickness δ min =0.9mm, the minimum distance l between adjacent blades min =6.3mm, the number of blades distributed on the blade circumference is Z=12, and the material is 2A50 aluminum alloy. The overall impeller working condition must meet high speed, large thrust-to-weight ratio, high performance, and its curved surface error is small, high precision, and good dynamic balance performance.

[0054] The technical method for improving the manufacturing precision of the aluminum alloy open integral impeller, the specific steps are as follows:

[0055] Step 1: Prepare materials:

[0056] Prepare Φ130mm 75mm 2A50 aluminum a...

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Abstract

The invention relates to a process method for improving the manufacturing accuracy of an aluminum-alloy open-type integral impeller. The method comprises the concrete steps of preparing materials, carrying out rough-turning on impeller blank shape, carrying out rough-turning on a process gripping head, carrying out heat treatment, carrying out artificial aging, carrying out semi-fine-turning on the process gripping head, carrying out semi-fine-turning on impeller shape, carrying out low-temperature treatment, carrying out five-axis-linkage-machining rough-milling, carrying out natural aging, carrying out five-axis-linkage-machining fine-milling, gripping, carrying out fine-turning on an axle hole, carrying out fine-turning on an impeller, gripping and carrying out dynamic balance. The impeller manufactured by adopting the process method provided by the invention has the characteristics that the shape is complete, the curved face is smooth and unhindered, blade curved faces and flow passage curved faces are low in deformation, and shown by the results of a fluorescent flaw detection, blade surfaces and front edges of the blades are flawless; during the dynamic balance of the integral impeller, mass reduction is relatively low, the qualified rate is high, and the qualified rate of excess-revolution tests of the integral impeller is greatly increased; the improvement of process for the series of integral impeller parts is realized, and good product quality, performance and design requirements are guaranteed; meanwhile, the stability of production quality is improved, and the reliability of products is improved.

Description

technical field [0001] The invention relates to a processing technology of an open integral impeller, in particular to a process method for improving the manufacturing precision of an open integral impeller made of 2A50 aluminum alloy. Background technique [0002] With the development trend of modern aircraft becoming more and more advanced, the number of electronic equipment on the aircraft is increasing, and the requirements for environmental control are also getting higher and higher. Its core components - turbo mechanical refrigeration components, recirculation fans of components, electronic equipment High-speed rotating impeller machinery is used in components such as cooling fans. As the key components of this type of rotating machinery, the impeller parts not only affect the overall processing quality of the components, but also directly affect the reliability of the components. The structure of this kind of integral open impeller system parts based on 2A50 aluminum...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 吴雁吕博鑫郑刚
Owner SHANGHAI INST OF TECH
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