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I
NSTRUCTION
M
ANUAL
3601 E. 34th St. Tucson, AZ 85713 USA Tel. +1 520-882-6598 Fax +1 520-882-6599 email: [email protected] Web: http://www.metallographic.com
Please read this instruction manual carefully and follow all installation, operating and safety guidelines.
NANO 2000T Polisher
4.5.4 Cast Iron
Cast irons are difficult materials to prepare properly because the graphite nodules (or graphite flakes)
are easily pulled out during preparation. By minimizing the sectioning damage and by starting with a
modest-grit-size SiC paper, retaining these difficult particles can be accomplished.
17
Nodular Cast Iron
microstructure,
Etchant 2% nital, Mag. 100X
Graphite Cast Iron
microstructure,
Etchant 2% nital, Mag. 500X
Abrasive/surface
Lubricant
Time
320 grit SiC paper
400 grit SiC paper
600 grit SiC paper
800 grit SiC paper
1200 grit SiC paper
water
Until plane
1 minute
1 minute
1 minute
1 minute
1 um DIAMAT diamond on GOLDPAD pad
DIALUBE Purple
Extender
3 minutes
0.05 um Nanometer alumina on TRICOTE pad
1 minute