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

Thickness semi-compensated x-ray radiography inspection method of plug-in weld seam

A technology of weld thickness and detection method, applied in the direction of material analysis using radiation, can solve the problems of different imaging quality, low sensitivity of photographic inspection, and difference in transillumination thickness between the middle and end of the compensation block, so as to improve sensitivity, reduce Thin transillumination thickness, ensuring the effect of accuracy and reliability

Active Publication Date: 2015-08-26
CHINA NUCLEAR BAOTOU GUANGHUA CHEM IND
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a half-compensated X-ray photographic inspection method for plug-in weld seam thickness, which solves the problem of low sensitivity of photographic inspection caused by the thicker thickness of the compensation block and the difference in transillumination thickness between the middle and end of the compensation block. The problem of different image quality

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
  • Thickness semi-compensated x-ray radiography inspection method of plug-in weld seam
  • Thickness semi-compensated x-ray radiography inspection method of plug-in weld seam
  • Thickness semi-compensated x-ray radiography inspection method of plug-in weld seam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] A half-compensated X-ray radiography detection method for the thickness of the socket-type cladding tube and end plug weld of the present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0017] like figure 2 or image 3 As shown in the present invention, a half-compensated X-ray radiography detection method for the thickness of the plug-in cladding tube and the end plug weld seam comprises the following steps:

[0018] (a) if figure 2 As shown, a curved zirconium alloy plate with a length of 100 mm, a width of 50 mm, and a thickness of 8 mm is used as the compensation block 1, and the arc radius of the compensation block 1 is consistent with the focal length of the X-ray;

[0019] (b) if figure 2 As shown, 5 to 20 (for example: 5, 10 or 20) compensation holes 2 with equal diameters are processed on the compensation block 1, which is based on the outer diameter of the socket weld 3 and the thickness of th...

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 provides a half-compensation X-radiographic testing method for the thicknesses of inserting-bushing type welding lines. The method comprises the following steps: (a) selecting an arc-shaped plate as a compensation block, wherein the arc radius of the compensation block is accordant with the focal length during a X-radiographic process; (2) machining a plurality of compensation holes in the compensation block, wherein the diameter of each compensation hole is 1.01-1.03 times the thickness of the compensation block, and the distances from the welding lines to the edge of the compensation block are not less than 10mm by virtue of the depths of the compensation holes; (3) inserting the inserting-bushing type welding lines into the compensation holes during an X-ray transillumination process, putting an integral body formed by the inserting-bushing type welding lines and the compensation block on a film, and carrying out transillumination in a central exposure manner, wherein the radiographic condition parameters are that the focal length is 500-1000 mm, the quantity of exposure is 15-40 mA.min, and the transillumination voltage is 150+ / -30 kV. According to the method disclosed by the invention, the imaging qualities of different regions in the compensation block are accordant; as the thickness of the compensation block is slightly smaller than the diameter of each compensation hole, the transillumination thickness is effectively reduced, the radiographic sensitivity is greatly improved, and the accuracy and reliability of a detection result are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of weld seam detection, and in particular relates to an X-ray photographic detection method for internal defects of socket-type weld seams or rods. Background technique [0002] The socket-type weld belongs to the rod-shaped weld. When manufacturing, the end plug recess is inserted into the cladding tube, and then the end plug and the cladding tube are welded together by electron beam welding. The plug-in rod-shaped weld usually adopts the flat-panel photographic method with full compensation for weld thickness. In this photographic method, the compensation block is flat-shaped, and the axial direction of the compensation hole is perpendicular to the thickness direction of the flat plate. The diameter of the compensation hole is much smaller than the thickness of the compensation plate. The contours are all located inside the thickness direction of the compensation block, and the schematic diagram of the com...

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): G01N23/04
Inventor 郝新贵李林峰汤慧
Owner CHINA NUCLEAR BAOTOU GUANGHUA CHEM IND
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