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In addition to other factors, the
cost of nozzles is significant in the total costs of shot blasting. The
nozzle is the crucial part of the equipment which is subjected to rapid
wear. Costs are created by the price of the nozzle, the loss of work
efficiency caused by the rapid wear of nozzle, and by the time consumed
in replacing nozzles.
Boron carbide nozzles' durability, i.e. their service life, is clearly
superior to that of any other commercially available nozzle type.
Boron carbide is the right choice when the blasting material is highly
abrasive, e.g. aluminium oxide, steel or certain minerals, or generally
when blasting is continuous.
The durability of boron carbide is 5-10 times better than that of
cemented carbides and 2-3 times better than that of silicon carbide.
Boron carbide nozzles
reduce replacement costs by about 70%. They cost more, but last much
longer. The operating costs are reduced to about 1/3 of those of
cheaper nozzles.
The nozzle sleeves can be made from aluminium or steel according to the
customer's requirements. Fastening can be arranged either by means of a
thread or a flange. Typical thread sizes are 3/4", 1 1/4" and 2", and here,
too, the customer's special requirements can be observed.
STRAIGHT NOZZLES
provide a well focused blasting pattern and they are well suited for
use in blasting cabinets and for blasting seams and other narrow
objects and for pattern-blasting of stone and glass.
VENTURI NOZZLES
provide a broader blasting pattern than straight nozzles. The velocity
of the blasting shot in these nozzles can be 100% greater than in
straight nozzles. Venturi is the right nozzle choice whenbroad surfaces
are being blasted and when high capacity is required. A long Venturi
nozzle adds about 40% to blast capacity when compared to a straight
nozzle, and the consumption of shot is reduced by about 40%.
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