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Hollow partition plate stationary blade profile correcting method

A technology of hollow baffles and stator blades, which is applied in the processing field of hollow baffle-type stator blades, and can solve problems such as secondary deformation of blades and poor correction effect

Active Publication Date: 2014-02-26
WUXI TURBINE BLADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned problems, the present invention provides a method for correcting the profile of a hollow diaphragm-type static vane, which solves the problems of easily causing secondary deformation of the blade and poor correction effect existing in the existing mold correction method

Method used

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  • Hollow partition plate stationary blade profile correcting method
  • Hollow partition plate stationary blade profile correcting method
  • Hollow partition plate stationary blade profile correcting method

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Embodiment Construction

[0011] A method for correcting the profile of a hollow partition-type stationary vane, which includes mold correction, installing the correction mold on a press, filling the cavity of a hollow partition-type stationary vane 5 with a filling material 4 before the mold correction, See figure 2 , and then place the blade in the calibration mold, apply pressure to the calibration mold with a press, and perform mold calibration on the blade profile. After the calibration is completed, the filling material inside the blade cavity is removed, and the blade can enter the subsequent processing procedure.

[0012] The filling material is paraffin. Before the blade mold is corrected, use a wax melting box to fill the paraffin in the molten state inside the blade cavity. After the paraffin in the blade cavity is fully cooled and solidified, place the blade in the calibration mold for mold calibration. Clean the residual paraffin on the surface of the blade before the mold is calibrated. ...

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Abstract

The invention provides a hollow partition plate stationary blade profile correcting method which solves the problem in the existing die correcting method that secondary deformation of a blade is easy to cause, and a correcting effect is poor. The method includes die correction which includes that a correcting die is arranged in a press. The method is characterized in that before the die correction, a cavity of the hollow partition plate stationary blade is filled with filling materials, the blade is arranged in the correcting die, the press is used for exerting pressure on the correcting die to conduct die correction on the blade profile, after the correction is finished, the filling materials in the cavity of the blade are removed, and the blade can enter the next machining procedure.

Description

technical field [0001] The invention relates to the technical field of processing hollow diaphragm-type stationary blades, in particular to a profile correction method for hollow diaphragm-type stationary blades. Background technique [0002] The hollow partition type static blade is formed by stamping the inner arc plate and the back arc plate respectively and then welding them. During the welding process, the inner arc plate surface 1 of this type of blade is easy to produce outward convex deformation, see figure 1 As shown, since this type of blade is a hollow blade, it has strict requirements on the size of the single plate, so it is impossible to eliminate the convex deformation of the inner arc plate surface by grinding and polishing, and must be eliminated by correction methods. figure 1 Among them, 2 is the profile of the back arc plate, and 3 is the convex deformation direction of the profile of the inner arc plate. Conventional calibration mostly uses mold calibra...

Claims

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Application Information

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IPC IPC(8): B21D1/00
Inventor 苏化冰刘永骏齐向华江伟虞超徐大懋
Owner WUXI TURBINE BLADE
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