Computer aided system provides a wide range of testing functions, from semi automatic point and click measurement of indentation diagonals to a fully automatic mode
Indentec Hardness Testing Machines has recently launched the first British made fully automatic micro Vickers hardness testing machine.
The new ZHV model is designed to perform tests using forces from 10gf to 2kgf.
The unit features motorised turret and load change mechanisms and an electronically controlled test cycle as standard.
Equipped with a CCD video camera, the computer aided system provides a wide range of testing functions, from semi automatic point and click measurement of indentation diagonals to a fully automatic mode which is independent of operator influence.
This ensures that reading differences due to variations between operators are removed.
Repeatability and reproducibility calculations suggest R and R values of less than 5% are achievable.
Supplied as standard with a manual X-Y table and component vice, the unit is suitable for testing a variety of samples.
Specially designed fixtures are available for awkward test parts.
For companies interested in metallurgraphic analysis, a grain size software package is available which enables various methods for calculating the appropriate ASTM grain size number.
A range of PC controlled motorised X-Y tables and an auto focusing facility enhance the performance of the standard unit to allow fully automatic testing, ideal for effective case depth determination and welded section evaluation.
The operator is able to program individual test patterns, specifying at each point the X and Y locations as well as the upper and lower tolerances and test force.
Indentec says that the system will improve the speed and ease of hardness testing.
As well as eliminating variances in human interpretation of Vickers impressions, the new measuring technology will free the operator to carry out other duties while automatic testing is in progress.
Indentec is an independent Ukas accredited ISO 17025 hardness calibration laboratory and so the micro Vickers tester is dual calibrated to both ISO 6507 and ASTM E92.
