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Ultrasonic testing method for buried depth of cracks in the inner wall of thick-walled pipes

A technology for burial depth and ultrasonic detection, which is applied in the direction of using sound waves/ultrasonic waves/infrasonic waves to analyze solids and process detection response signals. It can solve the problems of increasing quality costs, using buried hidden dangers, and effective detection methods without internal crack burial depths, etc. problems, to achieve high economic and social benefits

Active Publication Date: 2021-03-19
INNER MONGOLIA NORTH HEAVY INDS GROUP
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Problems solved by technology

In the manufacturing process of thick-walled pipes, they generally go through processes such as smelting, extrusion or forging, heat treatment, and mechanical processing. The effective detection method for crack burial depth in thick-walled pipes makes it difficult to realize the transformation and utilization of thick-walled pipes, increases the quality cost, and buryes hidden dangers for subsequent use

Method used

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  • Ultrasonic testing method for buried depth of cracks in the inner wall of thick-walled pipes
  • Ultrasonic testing method for buried depth of cracks in the inner wall of thick-walled pipes
  • Ultrasonic testing method for buried depth of cracks in the inner wall of thick-walled pipes

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Embodiment Construction

[0015] The technical solutions of the present invention will be described in detail below with reference to exemplary implementations. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.

[0016] An ultrasonic detection method for the buried depth of cracks on the inner wall of thick-walled pipes, comprising the following steps:

[0017] Step 1: Use the ultrasonic flaw detector to conduct ultrasonic inspection on the steel pipe by using the pulse reflection method; select the angle of incidence where the refracted shear wave sound beam intersects with the inner wall of the steel pipe, and inject the sound beam into the thick-walled pipe;

[0018] (1) Equipment requirements.

[0019] The horizontal linearity of the u...

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Abstract

The invention discloses an ultrasonic detection method of buried depth of cracks on the inner wall of a thick-walled pipe. The method utilizes a pulse reflection method to carry out manual ultrasonicdetection on a steel pipe. Through a diffraction signal, the buried depth of the longitudinal crack on the inner wall of the steel pipe is measured. The method can accurately measure the burial depthof cracks on the inner wall of the thick-walled pipe, solves the technical problem of the ultrasonic detection of the buried depth of cracks on the inner wall of a thick-walled pipe and has high economic and social benefits.

Description

technical field [0001] The invention relates to a thick-wall detection technology, in particular to an ultrasonic detection method for the buried depth of cracks on the inner wall of thick-wall pipes. Background technique [0002] Thick-walled pipes are widely used in electric power (power station boilers), petrochemical, and military industries. They are used in harsh environments, and in many cases they are used under high temperature and high pressure. In the manufacturing process of thick-walled pipes, they generally go through processes such as smelting, extrusion or forging, heat treatment, and mechanical processing. The effective detection method for crack burial depth in thick-walled pipes makes it difficult to realize the transformation and utilization of thick-walled pipes, increases the quality cost, and buryes hidden dangers for subsequent use. Contents of the invention [0003] The technical problem solved by the present invention is to provide an ultrasonic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/04G01N29/44
CPCG01N29/04G01N29/44
Inventor 宋慧斌毛月娟王海岭刘燕苗逢春王建新贺志强张平
Owner INNER MONGOLIA NORTH HEAVY INDS GROUP
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