Weld joint inspection device and inspection method

Abstract

The invention relates to a weld joint inspection device and inspection method. The device comprises a main ruler, a first connecting sliding block and a second connecting sliding block. The first connecting slide block and the second connecting slide block can freely slide or be located on the main ruler along the length direction of the main ruler; a first detection tip is vertically arranged atone end of the main ruler, a second detection tip is arranged on the first connecting sliding block in a direction perpendicular to the length direction of the main ruler, and the tip portion of the first detection tip and the tip portion of the second detection tip are both arranged on the same detection horizontal line. According to the invention, geometric quantities such as weld joint fusion width, excess weld metal, undercut depth or depression depth can be measured simultaneously, the measurement process is good in consistency, the detection method is simple, the precision is remarkablyimproved, and the measurement error is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of weld inspection, in particular to a weld inspection device and inspection method. Background technique [0002] Modern technology requires that the weld width and reinforcement of high-energy beam welded structures be strictly controlled within a specific range. At present, the commonly used measurement tools for measuring the geometric quantity of welds include weld inspection gauges and vernier calipers. Measuring tools include digital display and scale line reading, among which the digital display is more convenient. [0003] The digital display weld seam inspection device is a weld seam geometry measurement tool that digitally displays the measured value, and mainly measures weld seam reinforcement, undercut, sag, etc. The digital display instrument is often composed of an electronic display screen, an on / off key, a reset key, a metric-inch conversion key, and a battery compartment. The digital dis...

AI Technical Summary

Problems solved by technology

[0005] Existing weld inspection gauges do not consider the influence of welding deformation on the measurement error of the above-mentioned weld geometric dimensions, and cannot simultaneously measure weld weld width, undercut width and other geometric quantities, so they can only use other measuring tools such as vernier calipers

[0006] At the same time, for the weld at the same cross-section, after the weld reinforcement is measured using the weld inspection gauge, if you want to measure the undercut depth of the section, you need to move the positions of the two reference measurement planes, resulting in reference errors increase

In the same way, after using the vernier caliper to measure the weld width of the cross-section, if you want to measure the undercut width of the section, you need to re-locate the reference measurement position before measuring, that is, the reference error is likely to become larger

Images