Device for exposed radiographic testing of circumferential weld joint of annular workpiece

A circumferential weld seam and radiographic inspection technology, applied in the field of workpiece weld seam inspection, can solve the problems of undetectable harmful defects, safety accidents, etc.

Active Publication Date: 2016-02-03
CHENGDU ENGINE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even because the focus of the ray machine deviates from the best detection position, some harmful defects cannot be detected, resulting in safety accidents

Method used

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  • Device for exposed radiographic testing of circumferential weld joint of annular workpiece
  • Device for exposed radiographic testing of circumferential weld joint of annular workpiece
  • Device for exposed radiographic testing of circumferential weld joint of annular workpiece

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Embodiment Construction

[0023] The structure and use of the device for detecting the radiation exposure of the circular workpiece circumferential weld seam according to the present invention will be further described through the examples below.

[0024] The device for the exposure radiation detection of the circular workpiece circumferential weld seam described in this embodiment has the following structure: Figures 1 to 6 As shown, the composition includes a device frame, an X-ray emission alignment device installed on the device frame, and a workpiece placement table 1. The composition of the device frame includes a portal frame 5 fixed on the base frame, and a pair of guide rails. The lifting frame installed on the portal frame 4, the motor transmission mechanism that drives the lifting frame to move up and down 9, the handle mechanism that drives the lifting frame to move up and down for fine adjustment, the supporting beam installed on the lifting frame, and the upper end installed on the hangin...

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Abstract

The invention discloses a device for exposed radiographic testing of a circumferential weld joint of an annular workpiece. The device comprises a device frame and an X-ray emitting and aligning device and a workpiece containing table which are installed on the device frame; the device frame mainly comprises a door-shaped frame fixed on a base frame, a lifting rack installed on the door-shaped frame through a guide rail pair, a motor driving mechanism used for driving the lifting rack to vertically move, a hang-bearing cross beam installed on the lifting rack and a lower telescopic rod frame installed on the hang-bearing cross beam; the X-ray emitting and aligning device is composed of an X-ray tube and an infrared aligner located under the X-ray tube, and the infrared aligner is provided with more than four infrared emitters, wherein more than three infrared emitters are located in the different radius directions of the same horizontal plane of infrared emitter bodies, and one infrared emitter is located at the central axis perpendicular to the infrared emitter bodies located in the horizontal plane; the workpiece containing table is provided with a center mark and workpiece marks used for installing. The device has the advantages of being high in detection precision and efficiency.

Description

technical field [0001] The invention relates to the technical field of workpiece weld detection, in particular to a device for detecting the circumferential weld of an annular workpiece using a circumferential ray machine. Background technique [0002] The welding process is basically used in the production process of many annular workpieces, such as large pressure vessels used in the chemical industry, casings used in the field of aero-engines, etc. The quality of the weld is related to the service life of the workpiece and the safety performance during use. Therefore, in order to ensure the quality of the product, the quality inspection of the weld is one of the items that must be strictly inspected in the quality inspection of the ring workpiece. Welds are generally tested using non-destructive testing methods. [0003] At present, the most commonly used non-destructive testing method for welds is radiographic flaw detection. The widely used ray flaw detection method is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/04
Inventor 余郅刘建张集刘素平潘贞贞黄志新
Owner CHENGDU ENGINE GROUP
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