Nondestructive testing device and method for steel wire rope

A non-destructive testing and wire rope technology, applied in the direction of material magnetic variables, etc., can solve the problems of large volume and inaccurate testing results, and achieve the effects of good wrapping, improved testing accuracy, and uniform magnetization.

Pending Publication Date: 2018-11-06
曹馨
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  • Abstract
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Problems solved by technology

[0007] The invention provides a non-destructive testing device and method for steel wire ropes, which are used to

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  • Nondestructive testing device and method for steel wire rope
  • Nondestructive testing device and method for steel wire rope
  • Nondestructive testing device and method for steel wire rope

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[0036] Hereinafter, the present invention will be described in detail through exemplary embodiments. However, it should be understood that without further description, elements, structures, and features in one embodiment can also be beneficially combined into other embodiments.

[0037] Such as figure 1 As shown, in the running direction of the wire rope 1, a set of permanent magnets 21 and 22 with completely opposite magnetic field directions are arranged. The excitation direction of the permanent magnets 21 is the same as the running direction of the wire rope 1. When the wire rope 1 runs through the permanent magnet 21 , The wire rope 1 will be positively saturated magnetized; the excitation direction of the permanent magnet 22 is opposite to the running direction of the wire rope 1. When the wire rope 1 passes through the permanent magnet 22, the wire rope 1 will be reversed saturated magnetized; A number of permanent magnets 21 and 22 are arranged in the radial direction to ...

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Abstract

The invention discloses a nondestructive testing device and method for a steel wire rope. The device comprises at least one excitation mechanism group, at least one magnetic measurement mechanism anda remote terminal which are arranged sequentially in the running direction of the steel wire rope, wherein the remote terminal is in data connection with the magnetic measurement mechanism; during running of the steel wire rope, at least one round of excitation with completely opposite magnetic field directions is applied to the steel wire rope in the running axial direction of the steel wire rope, and the steel wire rope is subjected to bidirectional saturation magnetization; after saturation magnetization of the steel wire rope, the steel wire rope goes ahead continuously, remanence on the steel wire rope after magnetic fields are removed is called limit remanence, the limit remanence is tested by the magnetic measurement mechanism, processing and judging are performed by a magnetic measurement circuit, fact data is transmitted to the remote terminal, and damage to the steel wire rope is determined accurately. Remanence amount of the steel wire rope can be only related with the damage condition of the steel wire rope but not related with size of an excitation field or an excitation process, so that testing precision of steel wire rope damage condition is improved remarkably.

Description

technical field [0001] The invention relates to the technical field of steel wire rope damage detection, in particular to a nondestructive detection device and method for steel wire ropes. Background technique [0002] Wire ropes are widely used in various lifting transportation, mechanical transmission, ship traction, mine hoisting, transportation ropeway and other fields. Wear, wire breakage, rust, fatigue and other damage during use seriously affect production safety and even endanger equipment and personal safety, causing huge economic losses and adverse social impacts. Regular and on-line testing of steel wire ropes is very important. [0003] Magnetic detection method is currently one of the most effective and economical methods for detecting steel wire ropes. It is mainly divided into two types: strong magnetic detection and weak magnetic detection. Strong magnetic detection is to carry out magnetic flux leakage or eddy current detection on the steel wire rope while...

Claims

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Application Information

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IPC IPC(8): G01N27/82
CPCG01N27/82
Inventor 曹馨周敬房勤慧
Owner 曹馨
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