HMV-G Series - Features

Micro Vickers Hardness Testers

Excellent Automatic Reading Function (G31 Series)

In Vickers hardness measurements, the diagonal length of the indentation must be measured. With the PC software for the HMV-G series, images are acquired by the digital camera, and the diagonal length of the indentation is measured automatically. This eliminates human error and leads to stable results.


Easy-to-use software (G31 series)

The main sequence of operations is laid out in a way that is easy to visualize, so the system can be used easily by anyone.

  1. In simple mode, tests can be performed by setting the test force and retention time.
  2. The objective lenses and indenters can be switched with a single click.*1
  3. Autofocus can be performed with a single click.*2
  4. The instrument switches to a high-magnification lens automatically when the indentation is small.*1
  5. Image quality adjustments are easy in the test window.
  6. Each function is easily accessed with large icons.
  7. Sample surface conditions (cylindrical or spherical) are easily configured.
  8. The pattern can be easily checked with the preview function.
  9. The assist function simplifies the setting of conditions.
  10. For convenience, conditions and results are simultaneously displayed.
  11. The test position can be checked easily before testing.
  12. Patterns can be created without using special software.
  13. If there are scratches at the test position, and the indentation cannot be read, then a new position is specified and the test performed again.
  14. Statistical results are displayed simultaneously.

*1 Electric turret required
*2 Compatible only with FA models

Word Report Function 

A test results report is created automatically in Word format. Creating a template (.dotx format) in advance enables reports to be created automatically in an original layout.

* Microsoft Word 2016 or later is required to change the la yout.
* Direct conversion to PDF files is possible even if Word ha s not been installed on the PC.


Improving the Reliability of Test Results Data 

Managing the Data from a Server PC is Preferred

- The results are saved automatically
- They can also be saved to a PC on the network.

Managing who Did the Testing is Preferred
Were the results from manual measurements altered arbitrarily?

- Saving the name of the experimenter
- Password restrictions on manual measurements



Image Quality Adjustment Function for Each Lens 

If the camera image brightness and other visual qualities are changed for each lens, the image quality adjustments (such as brightness and contrast) can be saved separately.


Routine Inspection Graphs

Data graphs can be created just by selecting the daily results.

Automated Testing with the Electric Stage (FA Series)

Edge Detection and Automatic Edge Pattern Creating Function

The software automatically detects the sample edges, and then automatically creates a parallel pattern, region pattern, or perpendicular/zigzag pattern.
For circular samples, a circular pattern can be created in which the central coordinates are automatically calculated, and the user congures the angle/radius for the test position.

Automatic Test Pattern Creating Function

Pattern Tests

The test position pattern is set automatically. There are 10 configurable patterns (a user-designated position can also be set).


Application Examples

Testing Automobile Gears
The system can detect the gear edges, and measure the hardness within the gear. Additionally, the test force can be changed for each test position.

Measuring the Depth of Hardening
(JIS G 0559 and ISO 3754)

The depth of hardening can be determined to check the amount of quenching.

Testing Automobile Gears

Measuring the Depth of Hardening


Stage Viewer Function

The overall image of a large sample can be seen by photographing specified ranges and then combining the images. Double-click in the window to move the XY stage to that position.

Electric Micrometer (Optionally Available) 

The electric XY stage function can be used by replacing the micrometer head on the HMV-G31 manual stage. It can be installed in existing HMV-G21/HMV-G31 systems.

* XY directions only. There is no electric micrometer for the Z axis direction.


Suitable Hardness Tester
and XY Stage
Manual XY stage provided as standard with the HMV-G31 and HMV-G21
(Surface area: 100 x 100 mm)
Drive Method Stepping motor drive; open loop control
Stroke ±12.5 mm (0 to 25 mm) for both the X axis and Y axis
Movement Speed 2 mm/s max.
Positioning Accuracy 0.02 mm / 10 mm
Backlash during Round
Trip Turnback
0.003 mm max.
Movement Resolution 0.001 mm
Power Supply Single-phase 100 VAC 100 VA (50 Hz/60 Hz)

*Prepare a grounded outlet. (D type ground, with a ground resistance of 100 Ω max.)
*In addition, a power supply for the hardness tester unit and the PC will be required.

Personal Computer As per the recommended PC specifications for the HMV-G.
OS Windows® 10 (64 bit edition)
CPU (recommended) Intel® Core™ i5-6500 or faster (Windows® 10)
One USB 2.0 port (full speed) is used. (In addition, the tester unit uses two ports.)

Select the System to Suit the Situation


HMV-G31 Series
Standardized automatic length measurement function using a digital camera built into a novel G frame

G Frame 
The corner-less, elegant frame disperses the load uniformly for stability, and extends in the depth direction to expand the work space and improve operability. Additionally, because the central part of the frame is open, long narrow samples can now be measured as is.


Multi Turret (D Type) 
Two indenters and four lenses can be attached.

User-Designated Test Force Settings 
Using electromagnetic control, tests can be performed with a user-designated test force from 9.807 mN (HV0.001) to 19.61 N (HV2). (Minimum increment of 9.807 mN)

Test Conditions Assist Function 
This function can select the optimal lens from the anticipated hardness, or determine the optimal test force from the anticipated indentation depth and hardness.

Fracture Toughness Measurements 
The system can measure the crack length when the indenter makes an indentation, so the fracture toughness of brittle materials can be measured.

Measurement Mode Settings 
The user can select standard testing, in which the indentation is read after each test, or consecutive testing, in which the reading is taken after a number of test cycles.

Intelligent Software 
The software automatically sets the optimal indentation test force from the anticipated hardness and anticipated indentation depth. Further, the software automatically sets the optimal lens magnification from the anticipated hardness.

Automatic High Speed Readings 
One sample can be read in 0.3 seconds. (for monochrome cameras only)

Compact Design with a Built-in Digital Camera
The digital camera is built in, so the design is compact.

Automatic Lens Switching (T Type) 
After the automatic reading is taken, the lens is automatically switched to suit the size of the indentation.

Reading of Scored Surfaces 
The software can read not only samples with a mirror finish, but also samples scored by etching.

Routine Inspection Graphs 
The average hardness per lot is displayed in a graph, so the user can check changes in hardness.

Color Camera Model 
Models with color cameras are available.

USB Communication with a General Purpose PC 
Connect to a PC with just two USB cables. (Excluding the models with an electric stage)

Electric Micrometer (Optionally Available) 
After purchasing the HMV-G31/HMV-G21, if the electric micrometer option is subsequently added, the simplified electric XY stage function can be used.

■ The Following Situations Are Envisioned

Surface Processing and Etching Fields

  • There is a shortage of trained users, and the data varies significantly depending on the analyst.
  • There are scratches on the surfaces of lead frames and mechanical parts, so measuring indentation lengths is difficult.
  • Statistical controls should be implemented to evaluate quality stability, but there are not enough personnel.
  • The goal is to measure a range of samples, even those with unknown hardness levels.

Solar Cell Field

  • The goal is to evaluate the hardness of metal foils such as those used in solar cell wiring, but the foils cannot be measured because the test forces are too great.
  • The goal is to evaluate not only Micro Vickers hardness, but also Knoop hardness and other hardness types, but switching indenters is difficult.
  • The goal is to evaluate a variety of materials ranging in quality from hard to soft. However, this is difficult because test forces are inappropriate, and the lens magnification may not suit the indentation.



HMV-G31-FA Series
High Efficiency, Completely Automatic Measurements Using the Electric XYZ Stage and Special Software

Stage Viewer
Search the stage, and overlap the image data to create a total image. Also, the stage can be moved to the measurement position from the total image obtained.

Automatic Sample Shape Recognition
The system recognizes the shape of the sample, and sets the test position using this information.

General Purpose Test Pattern Settings
The coordinates of test positions are set using Excel data. As a result, programs can be created on a PC without installing special software. Angular adjustments to suit the sample orientation are made easily while observing the actual sample.

■ The Following Situations Are Envisioned

  Machine Industry Field

  • The goal is to evaluate the hardness distribution of parts with complicated shapes such as gears used in automobiles, aircraft, and hydraulic equipment, but determining measurement positions is difficult.
  • The goal is to measure the depth of hardening due to heat treatment, but measurement point positioning and calculations are difficult.
  • There are many test points, and measurement is difficult.




HMV-G30 Series
Turn it ON and Start Measuring Immediately. Active in Educational Fields.


Simple Test Mode
Simple test mode can be selected to start testing immediately just by setting the test force and the retention time.

LCD Data Graphs
The data are displayed in graphs, and it is easy to re-select or re-measure data.

LCD Touch Panel
The simple window configuration is easy to use. In addition to test condition settings, statistical graphs are displayed to summarize the results.

Direct USB Transfers
Just connect a USB flash drive to the instrument to automatically save data in CSV format.

Sleep Mode
Sleep mode starts up when the instrument is not in use, conserving power.

■ The Following Situations Are Envisioned

  Transport Equipment Field

  • The goal is to measure the hardness of camshafts and other long samples, but the tests cannot be performed because the instrument cannot accommodate the samples.
  • Users wish to avoid using PCs on-site.
  • Measuring samples for the first time is problematic because the degree of indentation force and magnification for measurement are unknown.

Select the Type to Suit the Objective

High Resolution Color Camera Type 

If visual inspection of the surface color is required in order to check the condition of the sample surface before testing, the sample can be positioned in the hardness tester, the sample surface can be checked, and then the sample can be tested as is.


Stand-Alone Model (HMV-G30)

A color touch panel has been adopted, so the user can easily set the conditions, measure the indentation length, and display the results. There is no need to connect to a PC.


In standard testing mode, sample information, shape correction, pass/fail determinations and other detailed conditions can be set before testing. Additionally, fracture toughness tests are supported.


Using the digital micrometer head, the G30 series can make depth of hardening graph measurements.


The system is equipped with a test conditions assist function that determines the optimal lens or the optimal test force from the anticipated hardness.

{"title":"Downloads","description":"Download the latest brochure.","source":"product","key":3461,"max":"30","filter_types":["brochures"],"link_title":"View other Downloads","link_url":"","pdf_links":[]}