Machining process of middle-long thin-wall blades

Abstract

The invention discloses a machining process of middle-long thin-wall blades, which belongs to the technical field of machining of blades. The machining process is implemented by a detailed process of integrated rough machining and integrated fine machining, wherein the integrated rough machining comprise the specific steps of rough machining of each surface of a blade tip, each surface of a blade root and a molded surface of a steam passage; and the integrated fine machining comprises the specific steps: semifinishing of each surface of the blade tip and each surface of the blade root, fine machining of each surface of the blade tip, each surface of the blade root and each residue, semifinishing of the steam passage and fine machining of the steam passage. According to the machining process of the middle-long thin-wall blades, the operation is simple and convenient, the use is convenient and fast, the cost is low, the machining efficiency is high, and the operation is easy and labor-saving; and the deformation of the middle-long thin-wall blades is controlled within 0 to 0.8mm, the normal machining of a subsequent mold correction process is facilitated, and the machining of each blade is finished once.

Description

technical field [0001] The invention relates to the processing technology of turbogenerator blades, in particular to the processing technology of medium-long and thin-walled blades. Background technique [0002] The blades of the turbogenerator, especially the medium-long thin-walled blades, the width of the middle steam passage part is between 400mm-1000mm, and the thickness of the exhaust side is 1mm-2mm. The main difficulty lies in how to control the deformation of the blade. Due to the long length of the blade and the thin wall thickness, it is affected by factors such as the amount of feed, the speed of feed, and the internal and external stress of the blade during the processing, which makes the deformation of the blade larger. The size of the produced long thin-walled blades is unqualified, and the product quality cannot meet the predetermined requirements. If the deformed blades are to be corrected to the predetermined requirements, the required process is extremely ...

AI Technical Summary

Problems solved by technology

[0002] The blades of the turbogenerator, especially the medium-long thin-walled blades, the width of the middle steam passage part is between 400mm-1000mm, and the thickness of the exhaust side is 1mm-2mm. The main difficulty lies in how to control the deformation of the blade. Due to the long length of the blade and the thin wall thickness, it is affected by factors such as the amount of feed, the speed of feed, and the internal and external stress of the blade during the processing, which makes the deformation of the blade larger. As a result, the size of the long thin-walled blades produced is unqualified, and the product quality does not meet the predetermined requirements. If the deformed blades are to be corrected to the predetermined requirements, the required process is extremely complicated, consumes a lot of energy, and takes a lot of time and effort.

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