Reference block group used for ultrasonic detection of austenitic stainless steel welding seams

A technology of austenitic stainless steel and comparative test block, which is applied in the direction of material analysis, measuring device and instrument using sonic/ultrasonic/infrasonic wave, can solve the problems of poor sensitivity of comparative test block and inconvenience to carry, avoid sidewall interference, Easy to carry and compact to carry

Active Publication Date: 2014-01-15
STATE GRID CORP OF CHINA +1
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  • Abstract
  • Description
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Problems solved by technology

[0004] In order to solve the technical problem that the sensitivity of the existing comparison test block is poor and it is not easy to carry

Method used

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  • Reference block group used for ultrasonic detection of austenitic stainless steel welding seams
  • Reference block group used for ultrasonic detection of austenitic stainless steel welding seams
  • Reference block group used for ultrasonic detection of austenitic stainless steel welding seams

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Embodiment Construction

[0023] The comparative test block group for ultrasonic testing of austenitic stainless steel welds according to the present invention will be further described in detail below in conjunction with the accompanying drawings. A comparison test block group for ultrasonic testing of austenitic stainless steel welds, comprising a plurality of comparison test blocks 10, each side of the comparison test block 10 is provided with a weld 12, and each comparison test block 10 contains at least one Through hole 11, the center line of through hole 11 is parallel to the upper surface of the comparison test block 10 where the through hole 11 is located, and the distance from the center line of all through holes 11 to the upper surface of the comparison test block 10 where the through hole 11 is located is first class difference series, such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 shown.

[0024] Each comparison test block 10 adopts a steel plate with the same or simil...

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Abstract

The invention provides a reference block group used for ultrasonic detection of austenitic stainless steel welding seams, which comprises a plurality of reference blocks (10), wherein welding seams (12) are formed on the side faces of each reference block (10), at least one through-hole (11) is contained in each reference block (10), the center line of each through-hole (11) is parallel to the upper surface of the corresponding reference block (10), and the distances from the center lines of all the through-holes (11) to the upper surfaces of the reference blocks (10) where the through-holes (11) are located are an arithmetic progression. The reference block group used for ultrasonic detection of the austenitic stainless steel welding seams can be used to test the detection capability of an austenitic welding seam ultrasonic detection system and can also be used to adjust the sensitivity before detection, and is smart and convenient to carry.

Description

technical field [0001] The invention relates to the technical field of non-destructive testing, in particular to a comparison test block set for ultrasonic testing of austenitic stainless steel welds. Background technique [0002] In the fields of electric power generation and other chemical industries, there are many pressure vessels made of austenite. In order to ensure the quality of these devices, non-destructive testing of the internal quality of these welds is required. There are generally two options: ray and ultrasonic. Among them, ultrasonic testing is difficult to effectively detect due to the coarse grain and anisotropy of the austenitic weld structure. During the manufacturing process of equipment, manufacturers generally use radiographic inspection, which is costly and inefficient, and it is accompanied by the risk of radiation damage. When the equipment enters the service stage, most of them cannot use radiographic inspection due to structural reasons. It is ...

Claims

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Application Information

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IPC IPC(8): G01N29/30
Inventor 罗为民刘建屏
Owner STATE GRID CORP OF CHINA
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