IE.339
Experiment No. 4: MEASURING OF Surface Roughness BY Surtronic 25
Metrology Lab.
Statistical Quality control
No
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Student Name.
Student ID.
Experiment No.4: MEASURING OF Surface Roughness BY
Surtronic 25
AIM:
To measure the surface rouhness using surtronic (25) instrument.
Apparatus:
Surtronic (25), work piece, surface plate.
Theory:
The Surtronic 25 is a portable instrument that has a large display with the simplest
of menu structures and updated parameters. It is powered by a battery. It can be
used either as a freestanding or a bench mounted with fixturing for batch
measurement and laboratory operations.
The product features fast measurements cycle and intuitive menu structure. It
provides unique stylus lift mechanism for flexibility. It has parameter options to fit the
applications of the user and a powerful software option. Along with that, the long
traverse length and extended pick-up reach is also featured. Its storage is capable
of storing 100 readings.
Procedure:
1. Clean the instrument and the surface work piece by fine cotton cloth.
2. The power supply to the surtronic (25) measuring instrument is given and it
is checked with the reference sample for current roughness.
3. The instrument is bound on the specimen properly and then the
measurement is stored by pressing start/stop button. Note down Ra & Rz
values using parameter button.
4. Repeat the experiment on speciment by changing the distribution.
5. Repeat the above process for the remaining specimen and tabulate the
readings.
Observations:
Measurement roughness value µm sample.
Average
Average
direction Ra Rz
Ra
Rz
S.NO
Ra
1
2
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Result:
Rz
Ra
Rz
Ra
Rz
Grade