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Surface property inspection device and surface property inspection method

一种表面特性、检查装置的技术，应用在测量装置、采用电装置、电磁测量装置等方向，能够解决产品不能再使用、无法产品检查等问题，达到通用性高、广泛阻抗变化、简单电路结构的效果

Active Publication Date: 2014-03-19
SINTOKOGIO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there are problems that all products cannot be directly inspected, and inspected products cannot be used because of destructive inspection, etc.

Method used

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  • Surface property inspection device and surface property inspection method
  • Surface property inspection device and surface property inspection method
  • Surface property inspection device and surface property inspection method

Examples

Experimental program
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Embodiment Construction

[0049] Such as figure 1 As shown, the surface characteristic inspection device 1 according to the embodiment of the present invention includes an AC power source 10 , an AC bridge circuit 20 , and a determination device 30 .

[0050] The AC power supply 10 is configured to be able to supply AC power with a variable frequency to the AC bridge circuit 20 .

[0051] The AC bridge circuit 20 includes a variable resistor 21, a reference detector 22 provided with a magnetic sensor for detecting the magnetic properties of the reference sample S, and an inspection detector 23 provided with a sensor for detecting the magnetic properties of the object M to be inspected. A magnetic sensor with magnetic properties.

[0052] The variable resistor 21 is configured to be able to distribute the resistance RA into the resistance R1 and the resistance R2 so that the distribution ratio γ is variable. Resistor R1, resistor R2 together with reference detector 22 and check detector 23 constitute...

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PUM

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Abstract

To provide a surface property inspection device and surface property inspection method with which the surface treatment condition of treated material such as steel subjected to such surface treatments as shot-peening treatment or heat treatment, nitriding, and the like can be non-destructively and precisely inspected, and which offers a high degree of general purpose application. A surface property inspection device 1 includes a AC power supply 10, an AC bridge circuit 20, and a judgment device 30, and the AC bridge circuit 20 has a variable resistor 21 with a variable split ratio gamma, a benchmark detector 22, and an inspection detector 23. In variable resistor setting step S1, the split ratio gamma of a variable resistor 21 is adjusted and set so that the output from the AC bridge circuit 20 is increased; after setting a frequency at which the output from the AC bridge circuit 20 is maximized using a frequency setting step S2, in pass / fail judgment step S4, a benchmark sample S is brought into contact with the benchmark detector 22, the sample under inspection M is brought into contact with the inspection detector 23, and the output from the LPF 33 and the threshold value set in the threshold value setting step S3 are compared and a pass / fail judgment is made of the surface condition of the sample under inspection M.

Description

technical field [0001] The present invention relates to a surface characteristic inspection device and a surface characteristic inspection method for nondestructively inspecting the surface treatment state of a treated material subjected to surface treatment such as shot blasting, heat treatment, and nitriding treatment. Background technique [0002] Steel products such as gears and shafts used in automotive parts are subjected to surface treatments such as surface hardening by heat treatment, nitriding treatment, and shot peening to improve wear resistance and fatigue strength. [0003] Conventionally, surface properties such as residual stress and hardness after surface treatment of these products have been evaluated by destructive inspection of samples. Therefore, there are problems that all products cannot be directly inspected, and inspected products cannot be used because of destructive inspection. [0004] Therefore, there is an increasing demand for the development ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/80G01N27/90G01B7/06
CPCG01N27/82G01N27/80G01B7/105G01N27/9046G01B7/06G01N27/90
Inventor 牧野良保
Owner SINTOKOGIO LTD
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