Special-shaped intermediate ring blank

A technology of intermediate rings and special-shaped rings, which is applied to engine components, machines/engines, metal rolling, etc., can solve the problems of high cost, many processing hours, and low material yield, so as to improve service life and reduce subsequent processing , Improve the effect of material utilization

Pending Publication Date: 2022-04-12
GUIZHOU ANDA AVIATION FORGING
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only the machining man-hours are many, but also the material yield is low (about 5%-10%), and the

Method used

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  • Special-shaped intermediate ring blank
  • Special-shaped intermediate ring blank
  • Special-shaped intermediate ring blank

Examples

Experimental program
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Effect test

Example Embodiment

[0030] An aely shaped intermediate ring blank according to the present invention is formed by a small hole rectangular portion, a tapered middle portion, and a large hole rectangular portion; including the following steps:

[0031] Step 1: Determine the height of the blank according to the axial dimension of the ring

[0032] Hide o = (0.90 ~ 0.98) h d ;

[0033] Hide b0 = H b ;

[0034] Hide s0 = H s ;

[0035] hide s0 = H s ;

[0036] Medium, h 0 H d The axial height of the blank and the ring is respectively; H b0 H b The rectangular cross section height of the blank and the binduner of the riolent surface is respectively; H s0 H s Higher the rectangular cross section of the blank and the small hole end of the ring and the ring; H s0 H s The rectangular cross section of the blank and the small hole end of the roll and the ring is respectively.

[0037] Step 2: Determine the average diameter of the blank small hole according to the average diameter of the rolling ratio K and the ...

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Abstract

The invention discloses a special-shaped middle ring blank which is characterized in that the designed special-shaped ring blank is composed of a small-hole-end rectangular part, a conical middle part and a large-hole-end rectangular part, and according to the principle that the volume is not changed in the metal plastic deformation process and the structural characteristics of a conical-section ring piece, the special-shaped middle ring blank is manufactured by selecting a proper rolling ratio. Therefore, the structural size of each part of the preformed blank is obtained. According to the structural characteristics of the ring piece, the structural size of each part of a preformed blank is obtained by selecting a proper rolling ratio. The method is simple, the material utilization rate can be effectively increased, the follow-up machining time can be shortened, the completeness of a streamline in the machined ring piece can be kept, the performance of the aero-engine can be improved, and the service life of the aero-engine can be prolonged. The method is suitable for design of the special-shaped intermediate ring blank.

Description

technical field [0001] The invention relates to an intermediate ring blank, in particular to a special-shaped intermediate ring blank. Background technique [0002] At present, due to the low control precision, small rolling force and few functions of the existing rolling ring equipment in our country, the rolling process is limited. Therefore, most of the rings produced are of rectangular and near-rectangular section. For aero-engines, gas turbines, etc., special-shaped cross-section rings are usually simplified into nearly rectangular cross-sections for rolling production, and then mechanical cutting. Not only the machining man-hours are many, but also the material rate is low (about 5%-10%). For many engines using expensive nickel, cobalt-based superalloys and titanium alloys, the cost is too high. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a special-shaped cross-section ring blank that improves materia...

Claims

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Application Information

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IPC IPC(8): B21H1/06F01D25/00
Inventor 欧阳斌
Owner GUIZHOU ANDA AVIATION FORGING
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