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Portable Abrasive Blaster
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Blast Cleaning and Finishing System :
Abrasive Blasting as a finishing process has been successfully utilized on metal, glass, ceramics, plastic and stone. Purpose includes deburring, descaling, peening, polishing, stress relieving, deflashing & cleaning.
The Process
It entails forceful direction of abrasive particles-dry or suspended in a liquid against the surface of matal part or product, to remove contaminants or to impart desired finish. The process is also called sand blasting, grit blasting, shot blasting or liquid honing etc.
Abrasives used
Chilled iron grit, Steel shot, Aluminium oxide, Silicon carbide, Glass beads, Walnut shell, Plastic grit, Saw dust are used as blasting media. Selection depends upon type of surface, contamination to be removed, type of finish needed & required production.

Nature of Finish obtained
It is most important to recognise that blasting always produces a "non-directional" (isotropic) matte surface as opposed to a directional surface imparted by conventional polishing methods utilizing wheels or belts. Blasted surfaces are never highly light reflective, but are of satin, matte and non glaring. Still there is no relationship between reflectivity and smoothness. A dl appearing blasted finish can be smoother than a bright or polished finish.

100 magnification micro photograph shows blasted surface (top) as opposed to polished surface (bottom).

What is a Blast Cabinet?
Blast Cabinet is an enclosure which houses the abrasive propelling mechanism (blat gun), jolds work in position and confines flying abrasive particles and dust.
What are Super Blaster (SB), Pressure Blaster (PB) and Wet Blaster (WB) machines ?
There are basically three established methods of abrasive blasting i.e. INDUCTION-SUCTION (SUPPER BLASTER), DIRECTOR PRESSURE (PRESSURE BLASTER) and SLURRY PUMPING (WET BLASTER). These are briefly described below :
Induction - Suction
In this method, abrasive is drawn from hopper into the blast gun by a partial vacuum created by high velocity airflow. This is useful for light-weight abrasive and cleaning of light corrossion.
Direct Pressure
In this method, abrasive is pressurised in a pressure vessel by compressed air and then for nozzle. It imparts high abrasive velocity and blasting is faster.
Slurry Pumping
In this method, pump draws fine abrasive mixed in water (slurry) from bottom of hopper and forces it to blast gun where compressed air is introduced to atomise the slurry. Slurry is impacted on the surface to be cleaned.
Selection of Abrasives
In blasting operaion, the abrasive used will substantially affect the result and cost of your operation. We offer all types of abrasives and dependable advice for right selection to obtain best results at low cost. Some of the abrasives are :
Aluminium Oxide
Brown & While types, low breakdown rate & highly effective cutting action. Suitable to treat castings, metals and where discolorations is to be avoided.
Glass Beads
Unique abrasive for cleaning, finishing and shot peening. It is chemically inert, good for shot peening & for glaring/shine finish. Does not abrade the surface and keeps job tolerances intact.
Iron Grit & Shot
Chilled iron angular grit & round shots are used extensively for removal of heavy scale and rust. It is a low cost abrasive with lowest brekdown rate. Suitable for surface preparation before recoating or painting.
Walnut Shell
Used for cleaning delicate surfaces and deflashing of plastic parts. It is cheap and economical in use.
Plastic Grit
Plastic granular particles particularly acrylic and urea are most suitable for stripping surface coatings while maintaining substrate integrity and dimensional tolerances intact.
Cabinet Specification
Overall Dimension mm                
Height 2130 2030 2080 1660 2120 2570 1940 2235
Width 1100 1365 1665 800 1070 1365 1070 1365
Depth 2500 2430 2730 1500 1400 1700 1500 1700