Comprehensive Sorting Method of Swept Eddy Current and Barkhausen Noise Method for Bearing Rings

Abstract

The invention discloses a comprehensive sorting method using a frequency sweep vortex and Barkhausen Noise Method for bearing rings. The method comprises the steps of: 1) finding the detection advantages of two conventional detection methods through detection signals; 2) extracting a new characteristic value reactance integral value F (delta X) and a fourth mean square FPM from the signals with advantages of the two methods; 3) create a two-dimensional draw on the two optimal characteristic values; and 4) classifying the rings through SVM algorithm. According to the comprehensive sorting method using the frequency sweep vortex and the Barkhausen Noise Method for the bearing rings, the method is based on the advantages of the vortex method and the Barkhausen method; by extracting the reactance integral value F (delta X) and the fourth mean square FPM, and by adding a proper classification algorithm, the problem of nondestructive full-inspection of the bearing ring is solved; the accurate classification of qualified, unqualified, and unheated products is achieved; and the efficiency and accuracy requirements for product detection in actual engineering can be met.

Description

technical field [0001] The invention relates to a comprehensive sorting method of frequency-sweeping eddy current and Barkhausen noise method of bearing rings, belonging to the field of heat treatment non-destructive testing. Background technique [0002] Bearings are widely used in various types of machinery and are important basic components of various types of mechanical equipment. Its accuracy, performance, life and reliability directly affect the accuracy, performance, life and reliability of the host. The bearing ring is an important part of the bearing. It can effectively protect the balls and realize the relative movement between the inner ring and the outer ring of the bearing. In the manufacturing process, due to the imperfect heat treatment process, there will be differences in the hardness of the bearing ring products, resulting in qualified, unqualified and unheated products. [0003] The methods currently used for hardness testing mainly include: Brinell hard...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a comprehensive sorting method of the sweeping eddy current and the Barkhausen noise method of bearing rings, which can solve the problems of qualified and unqualified heat treatment hardness and those without heat treatment without causing damage to the surface of the workpiece. Non-destructive identification of three types of bearing rings, to achieve full inspection of bearing rings and suitable for production line inspection

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