Manufacturing Today - Volume 18, Issue 2 - 29

ROSLER METAL FINISHING

"It is equally effective with metallic materials, plastic, composite materials, ceramic or glass; in fact, the
raw material selection has more or
less become open-ended," he says.
"Post-production operations like surface smoothing, edge radiusing, highgloss polishing and surface preparation for subsequent coating require
consideration of every single process
stage for achieving acceptable surface
finishes. Factors to be taken into account are the actual AM technology
used for creating the parts, grain size,
and tolerances in the applied material
layers and the work piece positioning
in the build chamber."

drag-finishing and finishing processes are ideal for lower volumes of
high-value parts."
This is especially true, he notes,
when the parts are very delicate and
part-on-part contact must be avoided. "For drag processes, parts are
fixtured on a holder and dragged
through the media mass," Eldridge
says. "Fixturing points can easily be
added to the design of the AM part.
Again, this is where the expertise of
the surface finishing experts comes
into play.
"In conjunction with mass finishing, shot blasting processes, such as
air blasting and wet blasting, can be
used to remove the initial surface
roughness and help to reduce finishing cycle times," he concludes. mt

rapid

"fixturing points can
easily be added to
the design of the am
part. this is where the
expertise of the surface finishing experts
comes into play."

offers wide treatment possibilities and
"very repeatable results," Eldridge explains, mass finishing is the preferred
surface treatment method for AM
parts made from plastic or metal.
Depending on the work piece shape,
size, production volume and the technical specifications, the required
surface finishes can be achieved with
single-piece or batch processing of
multiple work pieces, Eldridge notes.
"The final surface finish requirement
on the most critical surfaces must be
taken into account during the design
process, and when setting the build
orientation and parameters," he says.
"Different surfaces on the part might
have different requirements."
All mass finishing solutions are
suitable for AM. These include standard vibratory finishing bowls and
tubs that allow processing of small to
large parts. "When part-on-part contact has to be avoided, parts can be
separated by dividers or be fixtured
to the processing bowl," Eldridge explains. "High-energy disk finishing
systems are ideal for finishing smaller
AM parts even in high volumes, while

SPECIAL SECTION

tured work pieces in a cost-efficient
manner, while offering the adaptability
necessary to meet the unique requirements of additive manufacturing."
Additive manufacturing has long
outgrown the stage of just being a
prototyping technology, and is now
on the verge of becoming a legitimate
system for low-volume production of
standard products, Eldridge states.
He notes that this "unique, flexible
manufacturing method" is also highly effective when it comes to the customization of geometrically complex
work pieces.

Nimble and Versatile
Rosler possesses a variety of methods for finishing the surfaces of additive-manufactured parts. Because it

rosler's expertise enables it
to have a variety of methods
for finishing the surfaces of
additive-manufactured parts.

VOLUME 18, ISSUE 2 manufacturing-today.com

29


http://www.manufacturing-today.com

Table of Contents for the Digital Edition of Manufacturing Today - Volume 18, Issue 2

Contents
Manufacturing Today - Volume 18, Issue 2 - Cover1
Manufacturing Today - Volume 18, Issue 2 - Cover2
Manufacturing Today - Volume 18, Issue 2 - 1
Manufacturing Today - Volume 18, Issue 2 - Contents
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Manufacturing Today - Volume 18, Issue 2 - Cover3
Manufacturing Today - Volume 18, Issue 2 - Cover4
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