Unlock instant, AI-driven research and patent intelligence for your innovation.

Protective device and method for turbofan engine support casing bearing bush processing

A technology for turbofan engines and bearing bushings, which is applied in the field of anti-corrosion devices during the processing of turbofan engine support casing bearing bushes, which can solve the problems of easy rust, scrapped parts, and difficult cleaning, so as to prevent corrosion and potential corrosion, to ensure the effect of sealing

Active Publication Date: 2021-11-12
CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Iron filings generated during post-welding machining easily enter the cavity, making it difficult to remove
Therefore, add urea to the cavity of the part before machining, and then fill and seal the cavity with paraffin wax to prevent the excess from entering. After the machining is completed, soak in hot water to remove paraffin wax and urea. The removal time generally takes 20 hours In this process, the material of the bearing bush on the supporting casing is 2Cr3WMoV, which is prone to rust after contact with water and urea, and the parts will be scrapped in severe cases

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Protective device and method for turbofan engine support casing bearing bush processing
  • Protective device and method for turbofan engine support casing bearing bush processing
  • Protective device and method for turbofan engine support casing bearing bush processing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings, but the claimed protection scope is not limited to the description.

[0023] The turbofan engine support casing is a multi-material, complex cavity with parts that are easily corroded. Corrosion-prone surfaces to be protected on support case bearing bushes require special treatment.

[0024] Such as figure 1 , Picture 1-1 , figure 2 , Figure 3-1 , image 3 and Figure 3-1 It is a diagram of the protective device designed according to the processing environment of the part and the structure of the part itself. The device includes a sealing cover (such as figure 1 and Picture 1-1 ), the sealing cover includes a ring-shaped base body whose diameter is equal to the end face circle of the bearing bushing of the support casing, and an end surface of the ring-shaped base body is provided with a The ring body of the inner diameter of the pro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a turbofan engine support casing bearing bushing processing protection device and method. The protection device includes a sealing cover and a sealing seat, which form a sealing cavity. At the same time, peelable glue is used. The combined method isolates the bearing bushing of the machine bearing casing from the liquid water used for cleaning when cleaning the supporting casing, thereby avoiding the corrosion and galvanic corrosion of the bearing bushing.

Description

technical field [0001] The invention relates to a protection method in the machining process of an aero-engine, in particular to an anti-corrosion device and method in the machining process of a turbofan engine support case bearing bush. Background technique [0002] The materials involved in the turbofan engine supporting casing are TA15, 2Cr3WMoV, and GH2696, etc., which are assembled and welded by multi-level parts and components. A large number of cavities, and some cavities are deep and narrow structures. Iron filings generated during post-welding machining easily enter the cavity, and it is difficult to remove. Therefore, add urea to the cavity of the part before machining, and then fill and seal the cavity with paraffin wax to prevent the excess from entering. After the machining is completed, soak in hot water to remove paraffin wax and urea. The removal time generally takes 20 hours In this process, the material of the bearing bush on the supporting casing is 2Cr3...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B08B13/00
CPCB08B13/00
Inventor 邱树彬侯艳波郑忠俊涂泉赵海唐文仲陈姣赵劲石肇熊
Owner CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD