Method for removing ceramic mold core of hollow blade of aeroengine
An aero-engine and hollow blade technology, which is applied in the field of aero-engine hollow blade removal, can solve the problems that salts cannot flow out quickly, hinder the lye reaction, and reduce the safety of parts, so as to improve the core removal efficiency and core removal. The effect of mass, increased reaction interface, and shortened de-cored time
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0021] 1) One-time stripping
[0022] Put the tenon of the hollow leaf upwards and place it in a KOH solution with a concentration of 30%. The temperature of the lye is 150°C, the pressure of the lye is 0.2MPa, and the pressure fluctuation period is 9 minutes. After 20 hours of reaction, the leaves are taken out and rinsed with water for 2 minutes.
[0023] 2) Secondary stripping
[0024] Turn the hollow leaves that have been removed from the core once by step 1) upside down 180°, and place them in a KOH solution with a concentration of 35%. The leaves were taken out and rinsed with clean water for 2 minutes.
[0025] 3) Acid neutralization
[0026] The hollow blades that have been cored twice in step 2) are placed in citric acid stirred with compressed air for neutralization for 30 minutes.
[0027] 4) cleaning
[0028] Place the hollow leaves soaked in citric acid in step 3) in clear water stirred with compressed air and rinse for 15 minutes.
Embodiment 2
[0030] 1) One-time stripping
[0031] Put the tenon of the hollow leaf upwards and place it in a KOH solution with a concentration of 30%. The temperature of the lye is 150°C, the pressure of the lye is 0.4MPa, and the pressure fluctuation period is 9min. After 20 hours of reaction, the leaves are taken out and rinsed with clean water for 2 minutes;
[0032] 2) Secondary stripping
[0033] Turn the hollow leaf that has been removed from the core once by step (1) upside down 180°, and place it in a KOH solution with a concentration of 30%. Take out the leaves and rinse them with clean water for 2 minutes;
[0034] 3) Acid neutralization
[0035] Place the hollow blade that has been cored twice in step 2) in citric acid stirred with compressed air for neutralization for 30 minutes;
[0036] 4) cleaning
[0037] Place the hollow leaves soaked in citric acid in step 3) in clear water stirred with compressed air and rinse for 15 minutes.
Embodiment 3
[0039] 1) One-time stripping
[0040] Put the tenon of the hollow leaf upwards and place it in a KOH solution with a concentration of 40%. The temperature of the lye is 150°C, the pressure of the lye is 0.7MPa, and the pressure fluctuation period is 9 minutes. After 20 hours of reaction, the leaves are taken out and rinsed with water for 2 minutes;
[0041] 2) Secondary stripping
[0042] Turn the hollow leaf that has been removed from the core once by step 1) upside down 180°, and place it in a KOH solution with a concentration of 40%. Take out the leaves and rinse them with clean water for 2 minutes;
[0043] 3) Acid neutralization
[0044] Place the hollow blade that has been cored twice in step 2) in citric acid stirred with compressed air for neutralization for 30 minutes;
[0045] 4) cleaning
[0046] Place the hollow leaves soaked in citric acid in step 3) in clear water stirred with compressed air and rinse for 15 minutes.
[0047] After the cold light source and ...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com