Automatic Imaging Magnetic Particle Flaw Detector and Method for Railway Wheel Axle

Abstract

The invention discloses an automatic imaging magnetic particle flaw detection machine and a method for railway axles. The flaw detector includes a frame, a workpiece feeding mechanism, a workpiece sending mechanism, a rotating mechanism, a magnetic suspension spraying system, a wheel axle circumferential magnetization mechanism, and a wheel axle longitudinal magnetization mechanism, as well as a high-definition camera for collecting magnetic marks on the axle body and UV lamps, high-definition cameras and UV lamps for collecting indications on axle journals and dust plate seats, and high-definition cameras and UV lamps for collecting magnetic marks on the inner and outer sides of wheel webs on axles, all high-definition cameras and ultraviolet lamps The lamp is installed on a lifting device that can move up and down, and an ultraviolet illuminance meter is also installed on the lifting device. The invention has fast flaw detection speed, high accuracy of flaw detection results, small error and omission detection rate, displayable defects and magnetic trace images, traceable flaw detection results, good working environment for flaw detectors, and low labor intensity, which solves the problems existing in the existing magnetic particle flaw detection technology. The problem.

Description

technical field [0001] The invention relates to a device and method for automatic imaging magnetic particle flaw detection of railway axles, belonging to the technical field of magnetic particle flaw detection in nondestructive testing. Background technique [0002] At present, the magnetic particle flaw detection of railway vehicle axles is still used to observe the magnetic marks on the magnetized axle body, journal, and wheel web with human eyes, and make judgments on the display of magnetic marks based on work experience and give conclusive opinions way of doing. From the actual implementation, it can be found that this traditional magnetic particle inspection method has the following defects: [0003] 1. The detection speed is slow and the work efficiency is low. [0004] 2. High labor intensity, repetitive, monotonous, and unchanging workflows bring serious visual fatigue to flaw detectors, which will lead to problems such as simplified processes, omissions, missed d...

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Problems solved by technology

[0008] The purpose of the present invention is to provide an automatic imaging magnetic particle flaw detection machine and method for railway axles, which has fast flaw detection speed, high accuracy of flaw detection results, small error and omission detection rate, displayable defect magnetic trace images, traceable flaw detection results, and easy detection of flaw detection personnel. The working environment is good and the labor intensity is low, which solves the problems existing in the existing magnetic particle flaw detection technology, and is suitable for the magnetic particle flaw detection of the axles (wheel sets) of various types of railway vehicles

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