Page 33 - MMI-SeptOct2021 SM upload

Source: Nagel Precision Inc.

Honing.

nent stress and wear could lead
the engine to break down every
20,000-30,000 miles instead of
the 200,000-300,000 miles as is
common for today’s engines.
So, how does superfinishing re-
move stock without the heat
that is so typical of abrasive ma-
chining? The answer has to do
with depths of cut. “When you Superfin-
turn or grind a part, the depths ishing has
of cut could range from 50-100 Source: Nagel Precision Inc. advanced
microns or higher,” Keshavan beyond hard
tooling. To
says. “Removing that amount add more
of material in a short amount of Flat lapping. flexibility to
time requires lot of energy, and the super-
the part heats up. Superfinishing subtle nuance that may make Honing – Finishing of internal finishing
removes 1-2 microns of stock on it better suited for a particu- diameters with fixed abrasives. process,
Nagel has
radius and requires less energy.” lar application. Here are some It is considered a cold process, developed
common finishing processes as heat is not generated during ‘D-flex’
Choosing a finishing to compare: this operation. Improvement of band
technology
process Lapping – Finishing of flat faces surface finish is accompanied that acts
While manufacturers often with loose abrasives. Here, the by improvement of micro-con- like a fixed
use various finishing process improvement of surface finish tour accuracy. abrasive but
terms interchangeably, Kes- is accompanied by improve- Microfinishing / superfinish- can flex to
havan says each process has a ment in flatness of the part. ing – Finishing of external di- compensate
for as much
as a 15 mm
change in
diameter.

Source: Nagel Precision Inc.

Superfinishing with tape.

September-October 2021 | 33
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