Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method and equipment capable of improving the efficiency of ceramic core removal

A ceramic core and core removal technology, which is applied in the field of rapid removal of alumina-based ceramic cores for hollow turbine blades, can solve the problems of slow core removal rate and hinder the core removal reaction, so as to improve efficiency and eliminate reaction chambers Explosion, the effect of shortening the time of useless work

Inactive Publication Date: 2019-10-11
XI AN JIAOTONG UNIV
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high chemical stability of alumina, the core removal rate is slow under normal pressure alkali boiling conditions
High temperature and high pressure core removal is an effective method to increase the core removal rate, but under high temperature and high pressure, the core removal reaction products often adhere to the core surface and hinder the further progress of the core removal reaction

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
  • A method and equipment capable of improving the efficiency of ceramic core removal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0034] Such as figure 1 As shown, the present invention proposes a method and equipment that can improve the efficiency of ceramic core removal, wherein the equipment includes: electromagnetic reversing valve 1, vacuum pump 2, lye chamber 3, lye chamber solenoid valve 4, deflation Solenoid valve 5, pressure chamber 6, pressure stabilizing air pump 7, reaction chamber 8, clean water chamber solenoid valve 9 and clean water chamber 10, the specific structure is as follows:

[0035] 1) The pressure container is a pressure chamber 6, which is provided with an air release port and an air release solenoid valve 5, and the blades can be removed by opening the top cover; the pressure chamber 6 communicates with the pressure stabilizing air pump 7.

[0036] 2) The reaction chamber 8 is placed in the pressure chamber 6, and there are two grooves at the bottom of the reaction chamber 8 to match with the pipes under the clean water chamber 10 and the lye chamber 3 respectively, and are us...

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

PropertyMeasurementUnit
sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method and device capable of improving ceramic core removal efficiency. Firstly, according to the method, alkali liquor is used as core removal liquid, and clear water is used as a medium for regularly removing core removal products. The device adopting the method comprises an alkali liquor cavity, a clear water cavity, a reaction cavity and a pressure bearing cavity. During work, the alkali liquor is sucked back to the alkali liquor cavity through a vacuum air pump after being injected in the reaction cavity to react for a period of time, then, clear water is injected in the reaction cavity and violently boils at the moment, the core removal products attached to the surface of a core are removed through the boiling flushing force, then, the clear water is sucked back to the clear water cavity, the alkali liquor is injected to the reaction cavity again, and the steps are repeatedly executed till the core is completely removed. According to the type of device, pressure inside a system is kept constant through a pressure stabilization air pump. Because no pressure difference exits between the interior and the exterior of the reaction cavity, the wall thickness is decreased, and safety is improved. Because the core removal products on the surface of the core can be flushed away by injecting the clear water periodically, the core removal speed is substantially increased, and the method and the device can be used for removing the ceramic core of any complex structure.

Description

technical field [0001] The invention belongs to the technical field of rapid removal of hollow turbine blade ceramic cores, and in particular relates to a method and equipment capable of improving the efficiency of ceramic core removal, and is suitable for hollow turbine blade alumina-based ceramic cores with complex inner cavity structures. Removes quickly. Background technique [0002] Modern aero-engines and gas turbines all use hollow turbine blades. The operating temperature of the turbine blades is extremely high, and the internal cooling channels must be optimized to meet the operating temperature requirements. Therefore, the cooling channels inside the hollow turbine blades are becoming more and more complex. In order to shape the complex structure cooling channel inside the blade, it is necessary to manufacture and use a ceramic core with a corresponding complex structure. At present, ceramic core materials are mainly alumina and silica. Compared with silica-based ...

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): B22D29/00
Inventor 朱伟军李涤尘鲁阳田国强鲁中良
Owner XI AN JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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