Workpiece welding seam search device

Abstract

The invention relates to a workpiece welding seam search device. The device comprises a main body plate, guide grooves, a sliding bracket, a thimble, a hardness test head and a force applying nut, wherein the main body plate can be fixed to a workpiece; an avoiding groove which runs through the top and bottom of the main body plate is formed in the main body plate; the guide grooves are symmetrically distributed in the two sides of the avoiding groove in the length direction; the sliding bracket comprises a mounting seat located in the middle and sliding rails symmetrically arranged on the twosides of the mounting seat; the sliding rails are embedded into the guide grooves; a through hole is formed in the middle of the mounting seat; the thimble penetrates through the through hole and theavoiding groove; the upper end of the thimble is exposed to the top of the mounting seat; an outer thread is formed in the upper end of the thimble; the lower end of the thimble is exposed to the bottom of the main body plate; the hardness test head is elastically mounted at the lower end of the thimble through a spring; and the force applying nut is in threaded connection with the upper end of the thimble. According to the workpiece welding seam search device, a boundary between a welding seam and a base material can be found through the depth of a dent generated in the workpiece by the hardness test head, and the position of the welding seam is determined according to the boundary, so that the convenience is provided for subsequent non-destructive detection.

Description

technical field [0001] The invention relates to the technical field of maintenance, in particular to a workpiece welding seam searching device. Background technique [0002] The weld seam is a seam formed by melting and connecting the welding rod and the metal at the seam by using the high temperature of the welding heat source. After the weld metal is cooled, the two weldments are connected into a whole. According to the shape of the weld metal and the mutual position of the weldments, it can be divided into butt welds, fillet welds, plug welds and electric riveting. [0003] Butt welds are the most commonly used structural type in engineering, and generally have excess height. With the development of the national economy, more and more high-grade, high-parameter pressure vessels, pressure pipes, and ultra-supercritical units are used. For workpieces such as headers, in order to improve the stress level of welded joints and reduce the structural stress caused by the sudden...

AI Technical Summary

Problems solved by technology

This brings a lot of inconvenience to the later period, especially the non-destructive testing work in the maintenance process.

[0004] The weld seam is the weakest part of the workpiece. The non-destructive testing of the workpiece is mainly aimed at the weld seam, and the weld seam needs to be positioned during the inspection. If the position of the weld seam is unclear and the positioning is inaccurate, the non-destructive testing work cannot be carried out.

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