A shot blasting sheet is nothing but a rubber sheet
that provides protection to personnel and those around the shot blasting
process from the stream of abrasive particles, a prime reason as to why they
are also called abrasive blasting rubber sheet.
But what exactly is a shot blasting process?
In order to understand the significance of a shot blasting rubber sheet, you will first need to grasp the ins and outs of a shot blasting process; and it goes something like this –
Shot blasting or abrasive blasting is the process of
propelling a stream of highly abrasive particle at extreme speeds and under
extreme pressure against a surface in order to either roughen it or to make it
Not only that, but the process is also used to give a
surface a proper shape, and also for removing any trace of contaminants.
A pressurized fluid preferably compressed air or a
centrifugal wheel is what is used to propel the media or the blasting material
towards the surface.
(Bonus info: Benjamin Chew Tilghman was the first person in history
to use the abrasive blasting process way back on the 18th of October
difference between the two main types of abrasion blasting process – Shot
blasting and Sandblasting –
While considering the various types of the abrasion
resistance process, there are many different types.
However, there are two variants that are considered by
many as highly abrasive. And they are Shot blasting (which uses metal shots) and Sandblasting process (which uses sand particles), with the primary
difference being in the type of media being used.
Hence, let us sneak a peek at some of
the other differences between the two:
While sand needs no special introduction, a proper
explanation regarding what shot means needs to be given.
A shot is nothing else but the pure metal balls, which
may or may not be of a triangular shape, and are made of pure steel.
Hence, while discussing the difference between the two, it needs to be said that sand particles offer unmatched cleanliness over rust and other forms of corrosion.
And because shots are metallic themselves, it provides
the requisite profile depth and dent on the metal on which the blasting process
Yet another important difference between the two is the area in which the two processes can be performed.
According to experts, the Shot blasting process must
be performed in a closed and surrounded area as the metallic particles used in
the blasting process can cause fatal injuries.
However, a Sandblasting process can be easily
performed in an open area as the chances of causing fatal injuries are
significantly lower than that of the Shot blasting process.
Are these the only two types of media used in the blasting process?
Of course not!
In fact, the sheer idea that existed in the 1900s
where people considered sharp grains to be more useful has been long since been
Silica is probably the most commonly used mineral
abrasive used in the blasting process.
But since it breaks up easily to create larger
quantities of dust, the operator might develop lung disease, one of the main
reasons why it is coated with resins which are responsible for controlling the
These constitute of soft abrasives like fruit kernels
or crushed nut shells which are used as they prevent the underlying material
from getting damaged, like while you are cleaning a brick or removing graffiti.
Very much like the agricultural ones, these soft
abrasives which include dry ice, wheat starch, sodium bicarbonate, etc. these
are used for cleaning and removing coatings from printed circuit boards.
Some of the
safety equipment used by operators:
It has a head suspension system which enables the head
to move with the device. In addition to this, it also has an air-feed hose.
It protects the operators from the harmful and
sometimes fatal effects of the harmful gases, and hence it has an air
filtration and carbon monoxide alarm.
A shot blasting sheet which is made from a unique blend of synthetic and natural rubber sheet is probably the most widely used protective gear that is also preferred by the operators.