Repair method for complexing of inner flow passages of single-crystal or directional-crystal alloy blades

A repair method and a technology in the blade, which are applied in the field of epitaxial repair to realize the high-precision complex of the flow channel structure in the single crystal or oriented crystal alloy blade, and can solve the problems of easy occurrence, threat to the service safety of the blade, lack of grain boundary strengthening elements, etc. , to achieve the effect of extending service life

Active Publication Date: 2018-06-29
XI AN JIAOTONG UNIV
View PDF14 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the repair process of single crystal or oriented crystal blade, the microstructure grows epitaxially with the solidification of the molten pool, but when the single crystal or oriented crystal structure grows to a certain height, the equiaxed crystal structure is easy to appear and destroy the single crystal or oriented crystal structure. to grow
Due t

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
  • Repair method for complexing of inner flow passages of single-crystal or directional-crystal alloy blades

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The specific embodiments of the present invention are given below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments. Advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that all the drawings are in very simplified form and use imprecise ratios, which are only used for the purpose of conveniently and clearly assisting in describing the embodiments of the present invention.

[0030] Please refer to figure 1 , figure 1 Shown is a flow chart of the repair method for realizing the reconstruction of the inner runner of a single crystal or oriented crystal alloy blade according to a preferred embodiment of the present invention.

[0031] The present invention proposes a method for repairing the inner runner of a single crystal or oriented crystal alloy blade, which includes the following steps:

[0032] Step S100: Before rep...

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
Dimensional accuracyaaaaaaaaaa
Surface roughnessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a repair method for complexing of inner flow passages of single-crystal or directional-crystal alloy blades. The repair method includes step S100, judging and analyzing blade failure and defects before repair; step S200, cutting failure or defective portions of the blades, and polishing and cleaning the blades; step S300, mounting pre-produced and pretreated complexing molds used for guaranteeing high-accuracy complexing of inner flow passage structures of the blades, and fastening the complexing molds in to-be-repaired blade cavities, wherein the complexing molds are core molds with outer surfaces capable of forming blade cavity flow passages through solidification of follow-up blade material melts; step S400, preheating to-be-repaired portions to more than 75% ofa material melting point calculated by Kelvin, and allowing the blade repair portions to extend externally to grow in a direction control way according to a metal melt filling method; step S500, removing the complexing molds after metal cladding, and performing follow-up processing on the blades. The repaired blades meet application requirements of the single-crystal or directional-crystal blades,service life of the blades is prolonged to the greatest extent, and the repair method has great theoretical and practical significance.

Description

technical field [0001] The invention relates to the field of repairing aviation components, and in particular to an epitaxy repairing method for realizing high-precision reconstruction of the inner channel structure of a single crystal or oriented crystal alloy blade. Background technique [0002] As the "crown jewel" of modern industry, the technological level of aero-engines is an important symbol to measure a country's comprehensive scientific and technological level, industrial basic strength and comprehensive national strength. The development of modern aviation industry is closely related to the progress of aero-engine technology. The performance of aero-engines The indicators directly determine the performance of the aircraft. As an important component of aero-engines and ground-based gas turbines, the comprehensive performance of blades, such as service temperature and service life, seriously restricts the progress of aero-engine technology. At the same time, due to...

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
IPC IPC(8): B23P6/00
CPCB23P6/002
Inventor 刘宏杨冠军娄正计
Owner XI AN JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap