Automatic Image Capture Magnetic Particle Flaw Detector for Train Axle

Abstract

The invention discloses an automatic image acquiring magnetic particle flaw detector for train axles. The automatic image acquiring magnetic particle flaw detector for the train axles comprises a darkroom, wherein a hanger support and a magnetic particle flaw detector body is arranged in the darkroom. The magnetic particle flaw detector body comprises a magnetic suspension spraying mechanism, an open-close type electromagnetic coil, a linear guide rail, a workpiece clamp, a rotation driving mechanism and a linear driving mechanism, wherein the open-close type electromagnetic coil is installed on a sliding block, the workpiece clamp is used for clamping the workpiece which is sleeved in the open-close type electromagnetic coil when flaws are detected, the rotation driving mechanism is used for driving the workpiece to rotate, the linear driving mechanism is used for driving the open-close type electromagnetic coil to move along the linear guide rail, image acquiring mechanisms arranged in a straight line is installed on the hanger support, and two parallel ultraviolet light illuminating lines are symmetrically arranged on the two sides of the straight line. The automatic image acquiring magnetic particle flaw detector for the train axles can facilitate the judge on whether flaws exist on the workpiece or not of an operator outside the range of the darkroom, and avoids the long-term work of the operator under an environment with ultraviolet rays.

Description

technical field [0001] The invention relates to a non-destructive testing device, in particular to a magnetic particle inspection machine for automatic image capture of a train axle. Background technique [0002] Magnetic particle flaw detection is to use the ferromagnetic material to be magnetized, due to the discontinuous existence, the magnetic field lines on the surface and near the surface of the workpiece are locally distorted to generate a leakage magnetic field (that is, the magnetic field formed when the magnetic induction line leaves and enters the surface) and is applied to the surface of the workpiece by adsorption. Magnetic particles that form visually visible indications under suitable lighting show the location, shape and size of the discontinuity. Magnetic particle inspection can detect defects such as cracks, hairlines, white spots, creases, inclusions and other defects in magnetic materials. It has high detection sensitivity and can intuitively display the ...

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Problems solved by technology

[0003] In the prior art, fluorescent magnetic powder is usually used in combination with ultraviolet light irradiation to detect the train wheel shaft through manual observation of magnetic marks. Manual observation is time-consuming and laborious, and it is easy to miss inspection, and if the operator is exposed to ultraviolet light for a long time, it will also affect the operation. damage to the health of the

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