Use Grit Blasting and the Shot Blasting Machines for Providing Finishing Touch to the Metals:-
The world of
sandblasting is very interesting. A
forceful blast of some sort of cleaning media is forcefully ejected from a
nozzle hose to the surface area where that media rubs it aggressively and
cleans the target surface. Sandblasting
has not just one but many ways which help you get the best out of both cleaning
and finishing material comfortably and speedily.
Gone are the days when sandblasting was done
that promoted deadly silicosis exposure in the atmosphere to the workers. However, now shot blasting incorporates
better blasting substances and there are many different ways in which we can
accomplish our cleansing. If you want to
strip or even out the surface of materials, or just like a perfect finish or
refurbishing smaller items, both shot blasting and grit blasting will fit the
bill.
Although both shot blasting and grit blasting are
two different techniques, yet they come under the bracket of sandblasting. Here we have the important purposes of
different media:
Acrylic
Plastic:
This media is a soft plastic abrasive for ultra-sensitive surfaces
usually to provide gentle stripping from gentle parts and versatile metal
sheets of cars, aero planes, trucks, marine vessels vans, etc. It has an effective strip rate.
Corn Cob
Grit: Corn
cob is a biodegradable blast media that will not harm the surface being
blasted. It is better for wooden
surfaces and thin metals and plastics.
Walnut
Shells:
These are soft media for gentle areas which are best only to remove
foreign material and coatings without scratching the surfaces or marring them.
Aluminum
Oxide: This
grit is a recyclable sharp abrasive media
used in the aggressive cutting and cleaning of material. Suited before repainting, this hard media
removes heavy foreign matter from surface, used for de-burring, etching glass
and lettering stone. It is harder than
most media and will penetrate even the hardest surfaces.
Glass Beads: They create a softer,
brighter tone to the surface and offer peening, honing, cleaning and light
deburring. Available in different sizes,
they can remove small surface imperfections, treating softer metals, i.e.
brass, bronze and aluminum giving them a matte finish. They are recyclable up
to 30 times.
Melamine
Plastic:
This hard plastic grit is used for applications warranting a high
stripping rate without damage to the sub-surface like steel, copper, wires,
molds, gears, etc.
Pumice: It is a very gentle medium,
the softest of all the blasting media yet it has good stripping
properties. Soft surfaces of wood
thresholds, and balustrade can be treated before polish.
Silicon
Carbide Grit:
This hardest media is used on thick metal surfaces like car accessories,
bulletproof jackets, tough areas. Since
this media is very hard, it requires less blast times and makes for lower
overall cost of labor.
Steel media can be grouped into grit and shot:-
Steel Grit
Blasting Media:
Steel grit is angular carbon steel to scrape surface contaminants from
metals. It is softer than Aluminum Oxide
but forms tiny etched pits to form a surface superior for adhesion of paints
and coatings.
Steel Shot
Blasting Media:
Steel shot is good for peening applications so that a smooth and
polished finish is obtained. This media
can be used up to 3000 times and offers greater compressive strength of the
metal.
It all depends upon
what surface you want to treat or how you like it to finish i.e. whether you
want to repaint it or have a matte look.
Various media have various results but it finally rests upon you what is
best for your metal.
Use Grit Blasting and the Shot Blasting Machines for Providing Finishing Touch to the Metals
Reviewed by Pravesh Kumar Maurya
on
22:11
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