Equipment and method for detecting weld joints of turbine components

Abstract

The invention discloses equipment and method for detecting weld joints of turbine components. A rotation driving mechanism is used for driving the turbine components to rotate at a certain speed, then a 3D laser scanning camera is used for carrying out laser scanning photographing on weld joint areas, and photos of the whole circumference of each weld joint are collected and analyzed through computer software; the 3D imaging technology is used for displaying the weld joint areas on a 2D plane, different height messages of the surfaces of scanned parts are represented through different colors, rapid detection of the appearance quality of the weld joints can be achieved, and welding surface flaws with the minimum diameter being 0.01 mm can be detected. Compared with manual visual detection, the detection method is high in precision, and detection is not prone to omission; due to the fact that the photographing speed of the camera and the processing capacity of the software are high, detection of a single part can be completed within 15 seconds, and therefore efficiency is high, and the requirement for industrial mass production can be met; the cost of the equipment and method is only one sixth of that of computed tomography (CT) equipment.

Description

technical field [0001] The invention relates to the technical field of turbine component welding seam detection, in particular to a turbine component welding seam detection equipment and detection method. Background technique [0002] The turbine component 1 is also called the turbine rotating shaft, which is an important part of the automobile turbocharger, and is welded by the turbine impeller 11 and the rotating shaft 12 . Turbine components usually work at high temperature and high speed, and the working speed ranges from tens of thousands to more than 200,000 revolutions per minute. Its manufacture usually adopts electron beam welding process. Since the turbine impeller and shaft are welded by rings of different alloy materials, and the welding quality Affected by welding equipment and process control, there are many appearance defects at the weld, such as virtual welding, pits and holes, etc., which affect the welding quality. At present, the weld appearance quality i...

AI Technical Summary

Problems solved by technology

Human visual inspection is not only easy to miss parts, but also the accuracy of human inspection is low, it is difficult to identify small welding pits and cavities, and parts with surface defects cannot be 100% identified

However, the investment in purchasing equipment for CT detection is too high, and the detection time is too long to be used in large-scale industrial production.

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