Nondestructive thickness measuring method for nickel coat on Fe substrate

A non-destructive thickness measurement and nickel coating technology, applied in the direction of measuring devices, electromagnetic measuring devices, electric/magnetic thickness measurement, etc., can solve problems such as unsuitable nickel coating thickness measurement, object damage, etc., to achieve simple and intuitive detection process, easy to carry , the effect of accurate measurement results

Inactive Publication Date: 2008-02-27
EDDYSUN (XIAMEN) ELECTRONICS CO LTD +1
View PDF0 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to know the thickness of the nickel coating, it is usually necessary to measure the thickness of the nickel coating on the iron substrate. The existing thickness measurement method generally adopts the "microscopic measurement method of the thickness of the metal and oxide coating cross-section", which cuts the measured object , so that the cross-section of the object to be tested is exposed, and then the cross-section of the object is measured through a microscope to obtain the thick

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention will be further described in detail below in conjunction with the examples; however, the non-destructive thickness measurement method of a nickel coating on an iron substrate of the present invention is not limited to the examples.

[0020] A method for non-destructive thickness measurement of a nickel coating on an iron substrate of the present invention includes two processes of calibration and actual measurement:

[0021] In the calibration process, it includes the following steps:

[0022] Step a. select several samples made of iron substrate and the nickel coating on the iron substrate, the thickness of the iron substrate of the sample is the same, and the thickness of the nickel coating is different (the more samples, the higher the measurement accuracy);

[0023] Step b. Use an eddy current sensor to stick against the surface of a certain sample with a nickel coating for detection. The excitation winding coil of the eddy current sensor is ex...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a non-destructive thickness measuring method of nickel coating on iron base metal; the method is to setting samples of known thickness of nickel coating on iron base metal, by detecting the nickel coated surface of samples through eddy current sensor installed with exciting coils and magnetic test coils, the exciting coils send out pumping signals, obtain eddy current testing data corresponding to the thickness of nickel coating on iron base metal after managing the eddy current induction signal the magnetic test coils obtained, so as to establish a thickness model of nickel coating on iron base metal, in the actual measurement, with the help of this model, the thickness of nickel coating on iron base metal can be tested using the same method. The method is nondestructive, suitable for testing the thickness of all nickel coating on iron base metal, has the advantages of low cost, easy to carry with testing equipment, simple to operate, intuitive and detect fast, can immediate get the testing results at the scene with accurate results.

Description

technical field [0001] The invention relates to a method for detecting the thickness of a nickel coating, in particular to a method for measuring the thickness of a nickel coating on an iron substrate by using eddy current detection technology. Background technique [0002] Nickel is a silvery white ferromagnetic metal. Density 8.9 g / cm 3 , melting point 1455°C. It is ferromagnetic and ductile, and can conduct electricity and heat. Nickel also has good oxidation resistance. At room temperature, nickel forms a dense oxide film on the surface in humid air, which can not only prevent further oxidation, but also resist corrosion by alkali and salt solutions. Experiments have proved that nickel with a purity of 99% will not rust within 20 years. Nickel has strong corrosion resistance, especially to caustic soda. In 50% boiling caustic soda solution, the annual corrosion rate of nickel does not exceed 25 microns. The strength and plasticity of nickel are also very good, and i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01B7/06G01B21/08
Inventor 徐滨士董世运林俊明
Owner EDDYSUN (XIAMEN) ELECTRONICS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap