Cylinder block made of aluminum coated with Nikasil®. Coating thickness approx. 20 – 50 µm.
In practical use the cylinder walls or sleeves are electroplated with a layer of Nikasil®, typically between 80 and 180 µm thick. Afterwards, the coating thickness is controlled using the custom-configured table-top FISCHERSCOPE® MMS® PC2, further outfitted with a NICKELSCOPE® module and the probe ENW3. Overall, this specialized instrument employs the magnetic measurement method (hall effect).
In the next step the cylinder barrels are milled and honed to improve their sliding characteristics. A final coating thickness somewhere in the range of 25 to 50 µm is aimed for, which requires extremely narrow tolerances to be met in the measurement procedure.
The probe ENW3 is the centerpiece of the measurement system and is used both after the electroplating process as well as after honing. Its angled form helps the user to reach even difficult-to-access places.
Measuring inside cylinder barrels or sleeves can also be automated. To this end, the FISCHERSCOPE® MMS® PC2 can be equipped with a digital I/O module to control up to six probes at once; measurement values are collected and transferred to the instrument simultaneously, making it possible to take multiple measurements with high frequency for quality control purposes in a running production line.
For precise thickness measurement of Nikasil® coatings the FISCHERSCOPE® MMS® PC2 – equipped with the NICKELSCOPE® module and the ENW3 probe – is the perfect choice for professional quality monitoring of Nikasil® coatings. Even automated measurements with multiple probes are feasible. Please contact your FISCHER representative for more information.