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What is Roller Burnishing?
The Surface of
metal parts worked thro' turning, reaming or boring operations
is a succession of "PROJECTIONS" or "PEAKS" and"INDENTATIONS
or VALLEY" when microscopically examined. (See Fig1.) The
Roller burnishing operation compresses the "Projection (Peaks)
into the indentation (Valleys) thus forming a smooth mirror
finished surface ( as in fig.2). Any material not exceeding 40
Rockwell Hardness "C" can be roller burnished.
Advantages of Roller
Burnishing
i)
ACCURATE SIZE - Parts
produced by roller burnishing with control in size to micron
levels with high consistency and repeatabilty.
Ii) SUPERFINE SURFACE FINISH
- A very smooth surface finish as high as 0.05 to 0.2 Ra
finish can be obtained thro' Roller Burnishing when compared
to 0.5 to 3.5 Ra finish in
operation such as grinding, reaming, drilling, boring, or
turning.
iii) HARDER SURFACE - Cold
rolling condenses the grain structure of metal, producing a
hard corrosion resistant surface. The surface hardness
increases 5% to 10% with a
penetration of 0.25 mm to 0.76 mm. This results in increase of
part's wear life, added
strength, and improves fatigue resistance.
V) SAVES TIME AND LABOUR -
The tool processes parts in second when compared to
minutes taken for grinding, reaming, honing or lapping etc.,
Also a less skilled labour
can operate unlike other operations where labour skill play a
more important roll in
finish. Thus the less labour cost and high productivity saves
much of production cost.
v) MONEY SAVER - A part
from reducing production cost as above the ABHI burnishing
tools can be mounted on any conventional lathe or drilling
machine thus eliminating
high capital investment on precision machines.
vi) REPLACEABLE WEAR PARTS
- Wear parts such as rollers, guide rollers, bearings etc.,
can be easily replaced in ABHI Burnishing Tools which helps in
longer Tools life. A totally maintenance free tools.
For more details, please download
our Burnishing Catalog.
Click here. |
