Branson Krautkramer MIC 10, User Manual

Page: 14 / 146

In the following you will find a summary of the most im-
portant technical test requirements that you always
have to comply with to ensure correct measurements.
Test material
The test loads (probes) must match the surface quality
of the material:
•
smooth, homogeneous surfaces require low test
loads
•
rougher, coarse-grained surfaces require as high
test loads as possible.
The surfaces must always be free of any impurities
(oil, dust, etc.) and rust.
The surfaces roughness should not exceed approx.
30 % of the penetration depth.
Thin metal sheets must have a thickness correspond-
ing to the tenfold indentation depth of the Vickers dia-
mond.
For more details, please also read Chapter 12.3 and
especially the tables on page 12-5.
UCI method
The UCi method is a comparative method (contribu-
tion of the Young’s modulus to the measurement) with
a very high reproducibility of the measurements. The
UCI method does not replace the classical testing ac-
cording to Vickers, but it forms a quick and reliable
complement to it.
The direct comparison with the results from the stand-
ardized Vickers measurement according to the ma-
terial samples is therefore imperative for the
evaluation of the measurement accuracy of the UCI
method. This means:
)
Attention:
It is absolutely necessary that you calibrate your
MIC 10 to the material under test.
For this purpose, the calibration only has to be carried
out once since you can easily store and recall or set a
calibration.
The calibration for low-alloy or unalloyed steel is al-
ready preset in the instrument. Check it from time to
time (refer to Chapter 9.1
Check function )
For more details on the UCI method, please also read
Chapter 12.1.
Introduction
Important notes on MIC 10
1-8 Issue 08, 08/01 Krautkrämer MIC 10
In the following you will find a summary of the most im-
portant technical test requirements that you always
have to comply with to ensure correct measurements.
Test material
The test loads (probes) must match the surface quality
of the material:
•
smooth, homogeneous surfaces require low test
loads
•
rougher, coarse-grained surfaces require as high
test loads as possible.
The surfaces must always be free of any impurities
(oil, dust, etc.) and rust.
The surfaces roughness should not exceed approx.
30 % of the penetration depth.
Thin metal sheets must have a thickness correspond-
ing to the tenfold indentation depth of the Vickers dia-
mond.
For more details, please also read Chapter 12.3 and
especially the tables on page 12-5.
UCI method
The UCi method is a comparative method (contribu-
tion of the Young’s modulus to the measurement) with
a very high reproducibility of the measurements. The
UCI method does not replace the classical testing ac-
cording to Vickers, but it forms a quick and reliable
complement to it.
The direct comparison with the results from the stand-
ardized Vickers measurement according to the ma-
terial samples is therefore imperative for the
evaluation of the measurement accuracy of the UCI
method. This means:
)
Attention:
It is absolutely necessary that you calibrate your
MIC 10 to the material under test.
For this purpose, the calibration only has to be carried
out once since you can easily store and recall or set a
calibration.
The calibration for low-alloy or unalloyed steel is al-
ready preset in the instrument. Check it from time to
time (refer to Chapter 9.1
Check function )
For more details on the UCI method, please also read
Chapter 12.1.
Introduction
Important notes on MIC 10
1-8 Issue 08, 08/01 Krautkrämer MIC 10