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
CN103512959AActive Publication Date: 2014-01-15STATE GRID CORP OF CHINA +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
STATE GRID CORP OF CHINA
Publication Date
2014-01-15

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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.
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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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