The Vickers Hardness Tester is a new and high-tech product combining the optical, mechanical and electronic techniques, with a good aesthetic aspect, operational functions and reliability, and hence it is an ideal instrument for the testing of Vickers hardness.
The instrument adopts closed-loop loading control system, it makes the test accuracy improved and the repeatability and stability of the value better.
With the soft keys on panel board for input operation:
Arbitrarily choose the test force.
Preset the testing force dwell time.
Adjust intensity of light source.
Read the indentation length and after input it shows the hardness value and the number of measurements.
The instrument is suitable for the testing Vickers hardness value of the micro and thin pieces, permeated and coated plane surface, the crisp materials such as the agate, glass and it is, therefore, an ideal hardness measuring instrument for the scientific research institutes, the universities, the industrial production units and the metrological institutes.
According to the particular requirements of the client, the tester can be equipped with CCD indentation automatically measuring device.
Technical Specifications
1 Optical System:
| Eyepiece | Objective | Total Amplification | Min. Test Unit |
| 10× | 10× (Measure) | 100× | 1.0 μm |
| 20× (Observe) | 200× | 0.5 μm |
2 Test Forces: 4.903、9.807、19.61、24.52、29.42、49.03、98.07、196.1、294.2N
（0.5、 1、 2、 2.5、 3、 5 、 10 、 20、 30 kgf）
3 Carriage application method: Automatic loading, dwelling and unloading
4 Shifting method of objectives and indenter: Manual shifting
5 Dwell time: 0~60s (5 seconds as a unit)
6 Energy-saving Mode: After 10 minutes in repose, the hardness tester will automatically enter the energy-saving mode and shut up the light source. The operator can also wake up the energy-saving mode of the hardness tester by pressing any key on the panel, and then go on with the operation.
7 Power: (110~220), AV (60~50)Hz
8 Specimen:
l Max. height: 170 mm
l Max. depth: 130 mm (From the center)
9 Dimension(L×W×H): 530×280×630 mm
10 Weight: 31 kg
A Vickers hardness tester, developed by Vickers Ltd, measures material hardness using a diamond indenter with a square-based pyramid shape, measuring the diagonals of the indentation to determine the Vickers hardness value (HV).
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Principle:
The Vickers hardness test is a microindentation method that uses a diamond indenter with a 136-degree angle to create an indentation on the material’s surface.
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Indenter:
The indenter is a square-based pyramid made of diamond, with a 136-degree angle between opposite sides at the apex.
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Procedure:
- A specified force is applied to the indenter, which is pressed into the material for a set period (typically 10-15 seconds).
- The indentation is then measured using an optical system to determine the lengths of the diagonals.
- The Vickers hardness value (HV) is calculated based on the average of the diagonal lengths and the applied force.
- A specified force is applied to the indenter, which is pressed into the material for a set period (typically 10-15 seconds).
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Applications:
Vickers hardness testing is suitable for various materials, including metals, welds, and thin materials. It’s also used for measuring the surface hardness, small parts, and individual microstructures.
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Load Range:
The test can be performed with a wide range of loads, from a few grams to several kilograms, depending on the material and application.
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Standards:
The Vickers hardness test is standardized by organizations like ISO (ISO 6507) and ASTM (ASTM E92, ASTM E384).
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Units:
The Vickers hardness value is expressed as HV followed by the load in kgf (kilogram-force) or gf (gram-force). For example, HV 10 indicates a hardness value determined with a 10 kgf load.
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Advantages:The Vickers test is often considered easier to use than other hardness tests because the required calculations are independent of the indenter size, and the same indenter can be used for various materials.
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