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

Radiographic inspection compensation method

A technology of radiography and compensation method, which is applied in the direction of using radiation for material analysis, using wave/particle radiation for material analysis, and measuring devices, etc., which can solve the problems of relatively high environmental requirements on the detection site, low production efficiency, and high equipment costs. To achieve the effect of ensuring image quality and sensitivity, low equipment cost, and low production cost

Inactive Publication Date: 2005-04-13
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this detection method can better detect product quality, the cost of equipment used in this method is high, the processing time is quite long, the production efficiency is low, and the production cost is high; the environmental requirements for the detection site are relatively high, and it is not suitable for poor conditions. industrial production site

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
  • Radiographic inspection compensation method
  • Radiographic inspection compensation method
  • Radiographic inspection compensation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The selected aero-engine turbine blade is a cast grid cavity structure, the purpose is to check the cleanliness of the inner cavity to prevent foreign matter from blocking the airflow channel and ensure the cooling effect of the blade. First, use the comparative measurement method to analyze and select the film characteristics; take an X-ray film of length × width (11 inches × 1.5 inches) and wrap it with black paper, and cover it with a lead plate. The thickness must be sufficient to prevent the film from being affected by X-rays. There are holes with a diameter of 15 mm on the lead plate. During exposure, the lead plate is gradually moved, and the X-rays pass through the small holes to expose the film in sections, such as figure 1 shown. In this example, SEIFERT ISOVOT320 / 13 fixed X-ray machine is selected, the basic transillumination parameters are tube voltage 95KV, tube current 3mA, focal length 1800mm, and each exposure time is 8, 16, 32, 94, 128, 256, 512 second...

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
particle sizeaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The radiography inspection compensating method includes detecting the blackness values of different films via comparison, and drawing the characteristic curve with the characteristic curve data of different films to select films suitable for radiography inspection; verifying the reasonability and reliability of effective transillumination area selection via detecting the light beam homogeneity in X-ray machine; and final selecting filling and compensating powder with density, ray adsorption and attenuation same or near to the detected material, and filling powder of 0.1-0.3 mm size densely before the part transillumination. The present invention is reasonable and effective radiography inspection process suitable for use in industrial production environment.

Description

technical field [0001] The invention relates to a non-destructive testing of equipment components, in particular to a radiographic inspection and compensation method. Background technique [0002] As we all know, it is a necessary procedure to strictly test the quality of processed or modified equipment parts in industrial production, and there are many inspection methods. However, more stringent quality inspection is required for the inspection of some equipment components with high performance requirements, complex structure, and inner cavity. For example, the high-pressure turbine blade is a key part of the aviation gas turbine engine. There are complex cavities inside the blade to ensure the cooling and strength of the blade, and a large number of tiny exhaust ports are prepared on the surface of the blade. The change of the inner cavity of the blade reflects the degree of cooling of the blade, and reflects the extent to which the operating temperature of the blade exce...

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 Applications(China)
IPC IPC(8): G01N23/00G01N23/04
Inventor 熊瑛
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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