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A kind of hardness detection method and system

A detection method and hardness technology, applied in the direction of material magnetic variables, etc., can solve problems such as metal surface damage, and achieve the effect of avoiding damage and realizing non-destructive testing

Active Publication Date: 2022-05-03
苏州韦士肯检测科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this detection method will cause damage to the metal surface

Method used

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  • A kind of hardness detection method and system
  • A kind of hardness detection method and system
  • A kind of hardness detection method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] figure 1 It is a method flow chart of the hardness detection method in Embodiment 1 of the present invention.

[0065] see figure 1 , the hardness testing method, comprising:

[0066] Step 101: Applying electromagnetic fields of different frequencies to the metal to be tested. The frequency range of the electromagnetic field is 1 kHz to 1 MHz.

[0067] Step 102: Obtain the induced current generated by the metal to be tested during the process of applying the electromagnetic field to the metal to be tested and the magnetic field strength at the location of the metal to be tested. When the electromagnetic field is applied, the position of the metal to be tested is the position with the highest uniformity of the magnetic field in the electromagnetic field.

[0068] Step 103: Using the induced current and magnetic field strength as known quantities, determine the hardness value of the metal to be tested based on the known relationship between the induced current, magnet...

Embodiment 2

[0072] The difference between this embodiment 2 and embodiment 1 is:

[0073] The known relationship between induced current, magnetic field strength and hardness of standard parts is the relationship curve between induced current and hardness under different magnetic field strengths.

[0074] Then the above-mentioned step 103 specifically includes: searching the relationship curve between the induced current and the hardness under the corresponding magnetic field intensity according to the detected magnetic field intensity; determining from the relationship curve between the induced current and the hardness under the corresponding magnetic field intensity according to the detected induced current The corresponding hardness value is obtained to obtain the hardness value of the metal to be tested.

Embodiment 3

[0076] Embodiment 3 provides a hardness detection system.

[0077] figure 2 It is a system structure diagram of the hardness testing system of Embodiment 3 of the present invention.

[0078] see figure 2 , the hardness testing system, including:

[0079] A magnetic field applying module 301, configured to apply electromagnetic fields of different frequencies to the metal to be tested;

[0080] The signal acquisition module 302 is used to obtain the induced current generated by the metal to be tested during the process of applying an electromagnetic field to the metal to be tested and the magnetic field strength at the position of the metal to be tested;

[0081] The hardness value calculation module 303 is used to determine the hardness value of the metal to be tested according to the known relationship between the induced current, the magnetic field strength and the hardness of the standard piece using the induced current and the magnetic field strength as known quantiti...

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Abstract

The invention discloses a hardness testing method and system. The method includes: applying electromagnetic fields of different frequencies to the metal to be tested; obtaining the induced current generated by the metal to be tested during the process of applying the electromagnetic field to the metal to be tested and the magnetic field strength at the position of the metal to be tested; combining the induced current and the magnetic field Strength as a known quantity determines the hardness value of the metal to be tested based on the known relationship between the induced current, magnetic field strength and hardness of the standard piece; the standard piece is a metal piece with the same material as the metal to be tested. The hardness detection method and system of the present invention can avoid damage to the metal surface during the detection process and realize non-destructive detection.

Description

technical field [0001] The invention relates to the field of hardness sorting, in particular to a hardness testing method and system. Background technique [0002] Metal hardness is one of the most commonly used indicators to evaluate the mechanical properties of metal materials. The essence of hardness is the ability of a material to resist the intrusion of another harder material. For the tested material, hardness represents the comprehensive performance of various physical quantities such as elasticity, plasticity, strength, toughness and wear resistance reflected under a certain indenter and test force. Since the hardness test can reflect the performance difference of metal materials under different chemical composition, structure and heat treatment process conditions, the hardness test is widely used in the inspection of metal properties, supervision of heat treatment process quality and development of new materials. [0003] Conventional metal hardness testing mainly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/80
CPCG01N27/80
Inventor 陈金贵巫骏
Owner 苏州韦士肯检测科技有限公司