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Method for processing split thin-walled parts

A technology of thin-walled parts and a processing method, which is applied in the processing field of split thin-walled parts, can solve problems such as deformation of open thin-walled parts, and achieve the effect of solving the deformation problem and improving the level of manufacturing technology.

Active Publication Date: 2013-06-12
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This processing method can make the processing stress and residual stress formed during the processing of the parts mutually restrict and cancel each other, and fundamentally solve the deformation problem of the split thin-walled parts

Method used

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  • Method for processing split thin-walled parts

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Embodiment 1

[0043] Finished parts after processing: The parts are split-type thin-walled ring parts, which are composed of upper half rings, lower half rings, longitudinal mounting edges and bolts. The materials of the upper and lower half rings are superalloys. The main dimensions and technical conditions are: the maximum diameter of the part is Ф380mm, the height is 56.5mm, and the inner circle size is Ф279 +0.09 mm, the wall thickness is 2±0.12mm, the outer circle is not allowed to be processed after welding the two half-rings and the longitudinal mounting edge, and the jump between the inner circle and the reference is required to be 0.03mm, and the two half-rings are assembled by bolts.

[0044] Processing method of the present invention specifically comprises the steps:

[0045] Step 1: blank selection,

[0046] The blank adopts ring forging, and one blank is selected to process two parts;

[0047] Step 2: Before welding the ring forging, the two parts are roughly processed togeth...

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Abstract

A method for processing split thin-walled parts belongs to the technical field of aero-engines. The method can be used for processing not only components of an aero-engine but also mechanical parts, and enables a processing stress and a residual stress, which are formed in the part processing process, to interact and cancel, so that the problem that the split thin-walled parts are deformed is solved. The method comprises the following steps: selecting a blank which adopts a ring-shaped forged piece for processing two parts; roughing the ring-shaped forged piece before welding; achieving heat treatment to remove the residual stress for roughing; semi-finishing; welding longitudinal mounting edges to enable the longitudinal mounting edges of the two parts to be in crossed distribution; conducting heat treatment to eliminate the welding stress; lathing a datum plane; cutting off to separate the two parts; linearly cutting the longitudinal mounting edges of the two parts; and respectively finishing the two parts.

Description

technical field [0001] The invention belongs to the technical field of aero-engines, in particular to a processing method for split-type thin-walled parts. This processing method can be applied to the processing of parts of aero-engines, and can also be applied to the processing of other mechanical parts. Background technique [0002] With the development of aero-engines, the use of new processes, new materials, and new structures on the engines not only improves the performance and reliability of the engines, but also brings continuous improvements in manufacturing technology. [0003] At present, there are two existing processing methods for split-type thin-walled parts: the first method is to cut the part longitudinally (wire cutting) after the whole wool (ring forging) passes through the inner and outer surfaces of the car, and mills the outer surface. Half ring, then weld the longitudinal mounting edge, bore the longitudinal mounting edge hole, connect the parts with b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
Inventor 唐秀梅师俊东李海泳袁仲欣
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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