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Coating thickness gauge and coating thickness testing method

A technology of coating thickness and thickness gauge, applied in the direction of electric/magnetic thickness measurement, instruments, measuring devices, etc., can solve the problems affecting the performance indicators of the instrument, achieve the effect of improving measurement stability, improving stability, and avoiding interference

Active Publication Date: 2022-06-03
SHENZHEN LINSHANG TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The stability of the oscillating signal of the probe excitation coil is a key parameter of measurement accuracy. At present, the oscillating circuit is generally designed with an analog circuit, that is, the LC oscillating circuit generates a sine wave signal. The oscillating frequency and amplitude generated by this circuit will vary with temperature and humidity. , or the change of the power supply voltage, which greatly affects the performance index of the instrument

Method used

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  • Coating thickness gauge and coating thickness testing method
  • Coating thickness gauge and coating thickness testing method
  • Coating thickness gauge and coating thickness testing method

Examples

Experimental program
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Embodiment Construction

[0046] The housing 10 is used to install each part; the housing 10 has an installation space inside;

[0050] The display screen 40 is used to display the measured value; the display screen 40 is arranged on the housing 10;

[0052] A battery is used to supply power to each part; the battery is arranged in the installation space;

[0054] The main circuit board 70 is used to process each signal; the main circuit board 70 is arranged in the housing 10, and is respectively connected with the

[0056] The inner wall of the housing 10 is provided with a positioning groove corresponding to the auxiliary circuit board 30, and a positioning block is provided in the positioning groove.

[0057] The detection coil 23 and the excitation coil 22 are wound on the same iron core 24. When the iron core 24 is in contact with the coating, the detection head

[0058] As shown in Figure 5, in the embodiment of the present application, the secondary circuit board includes: a D / A converter U3, an amp...

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Abstract

A coating thickness gauge and a coating thickness detection method, the coating thickness gauge comprising: a housing, a detection head, an auxiliary circuit board, a display screen, a USB interface, a battery, a switch button, a main circuit board and a trigger switch . The invention provides a coating thickness gauge and a coating thickness detection method. Different from the traditional analog oscillation circuit, the excitation signal adopts digital oscillation technology, and a high-speed ADC is used to collect detection signals to ensure ultra-high stability of the instrument; ultra-high measurement Accuracy and repeatability provide an effective means for measuring the thickness of very thin coatings, and can be used for the measurement of non-magnetic coatings such as paint, varnish, enamel, chrome, galvanized, etc. on ferromagnetic metal substrates such as steel, especially suitable for precision requirements High thin coating measurement.

Description

A coating thickness gauge and coating thickness detection method technical field The invention belongs to the technical field of thickness measurement, be specifically related to a kind of coating thickness gauge and coating thickness detection method. Background technique Thickness measurement is one of the important items of coating physical property detection, and coating thickness measurement principle has magnetic method, vortex Flow method, X-ray spectroscopy, ultrasonic thickness measurement, etc. Among them, the magnetic method can nondestructively measure the magnetic properties of steel, iron, alloy, hard magnetic steel, etc. Thickness of non-magnetic coatings on metal substrates, such as aluminum plating on iron, chrome plating on iron, copper plating on iron, enamel plating on iron, rubber on iron, paint coating layer etc. Electromagnetic induction method detects the surface coating thickness of ferromagnetic substrate and non-ferromagnetic material by u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/06
CPCG01B7/105
Inventor 张庸夫
Owner SHENZHEN LINSHANG TECH
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