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Hardness Automatic Image Measuring System

Hardness Automatic Image Measuring System

Model: CCD

HV-CCD System combines computer automatic measuring system with hardness tester .By means of CCD Camera interface, connect micro Vickers hardness tester with computer. Whole testing operation can be processed by operating keyboard and mouse, therefore the operation is easy and measuring precision is high. Maximum decrease h error and avoid seeing weariness of the operator. It is an advance hardness tester which can meet the needs of various Digital Brinell/Micro Vickers hardness testing.

General Introduction

HV-CCD System combines computer automatic measuring system with hardness tester .By means of CCD Camera interface, connect micro Vickers hardness tester with computer. Whole testing operation can be processed by operating keyboard and mouse, therefore the operation is easy and measuring precision is high. Maximum decrease h error and avoid seeing weariness of the operator. It is an advance hardness tester which can meet the needs of various Digital Brinell/Micro Vickers hardness testing.

Key Features

  • Features
  • Application
  • Standard
  • Working principle

Measuring and control system of the tester adopts high-resolving power image device to display indentation clearly on the screen of computer.

Transformed signal by software, automatically measure hardness value of testing indentation.

According to the process of point testing and continuously testing, make out the curve drawings of depth and trapezium.

It can test micro Vickers, Knoop, carburized layers etc.

Hardness value can be automatically exchanged with many methods.

According to your requirement, customer can select high power or low power objective.

Definition of image:>570

It can adjust contrast and brightness etc., of indentation image.

It can dispose image file and date file to open, save, print etc

It can look into the data file and image file at any time, Data file is printed to adopt table format and curvilinear format.

The Computer Automatic Measuring System can also be equipped on various models of our serial Digital Brinell Micro Vickers Hardness Testers such as DHV-1000, HVS-1000.

Besides standard accessories of original base instrument, this tester also equipped with special tube camera. Computer Printer, etc.,

Microhardness testers, especially Vickers hardness testers, are key testing instruments in the field of materials science and engineering, playing an irreplaceable role in evaluating material properties at the microscopic scale. The testing principle is based on pressing a specifically shaped indenter into the material surface under a very small load, and calculating the hardness value by measuring the length of the indentation diagonals. 

The importance of this testing method is mainly reflected in several aspects: Firstly, it can accurately measure the hardness of tiny components, thin-layer materials, surface-modified layers, and individual grains, providing critical data support for material design and process optimization; secondly, in scenarios such as heat treatment process evaluation, coating performance verification, and welded zone performance analysis, microhardness testing can reveal the distribution patterns of materials' microscopic mechanical properties; moreover, in failure analysis, the hardness gradient test can accurately determine the root cause of material failure. With the continuous development of new materials and new processes, microhardness testing has become increasingly widely used in high-tech fields such as aerospace, automotive manufacturing, electronic components, and biomedical devices, becoming an indispensable analytical tool in quality control and technology development.


The testing projects of a microhardness tester (Vickers hardness tester) cover multiple dimensions, mainly including: determination of the microhardness of the material matrix, measurement of the hardness and thickness of diffusion layers/coatings, assessment of the depth of heat-treated hardened layers, mapping of hardness distribution in welded joints, study of material anisotropy, analysis of hardness differences at grain boundaries and within grains, and characterization of interfacial properties of composite materials. The testing scope not only includes traditional metallic materials but is also widely applicable to hardness evaluation of ceramics, hard alloys, glass, plastics, and various composites. It is particularly worth mentioning that due to the shallow and elongated nature of Vickers impressions, Vickers hardness testing shows unique advantages in measuring brittle materials and thin-layer samples, enabling precise measurement of coatings or treated layers only a few microns thick, which is difficult to achieve with other hardness testing methods.

ASTM E384 “Standard Test Method for Microindentation Hardness of Materials”


ISO 6507 “Metallic materials -- Vickers hardness test”

The Vickers hardness tester uses a diamond square pyramid indenter with an included angle of 136°, which is pressed into the material surface under a selected test force (usually 49.03 to 980.7 N). After maintaining the force for a specified time, the test force is removed. Then, the length of the diagonals of the indentation is measured under a microscope, and the Vickers hardness value is calculated using the formula HV = 0.1891 × F / d² (where F is the test force and d is the average length of the indentation diagonals).


The core principle lies in the geometric similarity of the indentation, making the test results independent of the test force, thereby allowing accurate measurement over a wide range from very soft to very hard materials. Depending on the testing requirements, Vickers hardness testers are also classified into low-force type (<49.03 N) and microhardness type (<1.961 N), suitable for testing special samples such as thin layers, coatings, or metal foils.

Digital Vickers hardness tester

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