Method and device for magnetic particle flaw detection of ring workpiece
A technology for magnetic particle flaw detection and ring-shaped workpieces, applied in the direction of material magnetic variables, etc., can solve the problems of affecting the accuracy of flaw detection, time-consuming and labor-consuming, low work efficiency, etc., and achieve the effect of improving the efficiency of magnetic particle flaw detection and preventing sensitivity interference and power loss
Active Publication Date: 2017-07-28
厉伟
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[0010] Using this method for magnetic particle flaw detection of ring-shaped workpieces has the following unavoidable disadvantages: 1. There are blind spots in flaw detection. In this method, the workpiece is placed vertically. The holding surface will cause a blind area in the flaw detection process, and there may be missed inspections for defective workpieces. In addition, the holding surface will also cause poor magnetization effect on the surface of the component, which will affect the accuracy of flaw detection.
2. The work efficiency is low. Each workpiece can only be carried out in one step from the beginning of material loading to magnetization flaw detection, observation, demagnetization and other operations. The workpieces can only be inspected one by one, which is time-consuming and labor-intensive. It is not suitable for large-scale industrial production. Requirements for rapid detection of batch workpieces
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[0037] The technical solutions of the present invention will be described in detail below in conjunction with specific embodiments. Herein, the exemplary embodiments and descriptions of the present invention are used to explain the technical solutions of the present invention, but are not intended to limit the present invention.
[0038] This example:
[0039] This embodiment provides a method for magnetic particle flaw detection of an annular workpiece, comprising the following steps:
[0040] Step 1: Set the workpiece model and diameter parameters through the host computer software, and the equipment automatically controls the feeding alignment device to ensure that the workpiece is aligned with the center in the horizontal direction of the pallet;
[0041] Step 2: Place the workpiece on the workpiece bracket at the loading level through a loading device such as a row crane (or cantilever crane) to achieve horizontal center alignment;
[0042] Step 3: The 8-station step-by-...
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The invention relates to the technical field of magnetic particle flaw detection, and discloses a method and device for magnetic particle flaw detection of annular workpieces. The 8-station flow process layout is adopted, and the beat of the entire flaw detection process only depends on the time of magnetic particle flaw detection observation, which improves the magnetic particle flaw detection to the greatest extent. High efficiency, suitable for various batch ring magnetic particle testing requirements. In the present invention, the annular workpiece is placed horizontally on the workpiece tray, which is stable and does not need additional auxiliary clamping devices. At the same time, since the workpiece tray is provided with three 120° strip-shaped "∧ sharp" support frames, the annular workpiece There are only 3 frontal contact between the bottom end surface and the support frame, which solves the problem of the blind area caused by the clamping surface to the greatest extent; the ring-shaped bottom frame of the workpiece tray is designed with an opening structure, which can effectively prevent the interference of the detection sensitivity and the detection sensitivity caused by the ring-shaped induced current. power loss.
Description
technical field [0001] The invention relates to the technical field of magnetic particle flaw detection, in particular to a method and a device for magnetic particle flaw detection of an annular workpiece. Background technique [0002] At present, the circumferential rod-piercing method (central conductor method) and the longitudinal yoke induction method are mostly used for flaw detection of inner parts of bearing rings. The method of magnetic particle inspection according to figure 1 As shown, the inspected annular workpiece is vertically placed on two rotating rollers, and the central conductor rod passes through the center hole of the inspected annular workpiece. The specific operation steps are as follows: [0003] 1) Place the workpiece on the rotating roller through a loading device such as a row crane (or cantilever crane); [0004] 2) Manually observe whether the height of the workpiece is suitable for the central conductor magnetic rod to pass through, and the op...
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IPC IPC(8): G01N27/84
Inventor 厉俱德
Owner 厉伟