IBIX 25, Руководство по эксплуатации и обслуживанию

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17
2.8 BLASTING MATERIALS TO USE
–
TIPS AND SUGGESTIONS
ONLY THE BLASTING MEDIA SOLD BY IBIX SRL ENSURE THE PROPER FUNCTIONING AND ARE THE
ONLY RECOMMENDED FOR THEIR SPECIFIC USE.
For most applications, the best results with IBIX machines are obtained by using the natural mineral abrasive
material
GARNET .
Garnet is an Australian natural mineral consisting of extremely hard grains of ALMANDITE which enable the
material to be re-used; in addition, this material is not CRUMBLY therefore it will not break up and produce
dust, unlike sand.
It undergoes multiple washing cycles to remove any impurities and for this reason it will not produce dust
during work (unless it is used on concrete). No special precautions are required during work: oxygen masks
are not necessary, although protective masks are useful. This natural mineral does not contain any free silica
or ferrite (causing rusting right after iron-blasting). Garnet also offers advantages in the disposal phase as
it is compliant with environment protection-regulations and with the ISO 11 626 standard.
Garnet is sold in 25 Kg (55 lbs) bags and is available in 6 different particle sizes measured in mesh (from the
finest to the coarsest):
Mesh Grain size
350 (fine)
200 (fine)
120 (medium)
80 (medium)
30/60 (coarse)
20/40 (coarse)
Wood
- Particle sizes of 80 or 120 mesh are recommended. In certain cases, however, other GARNET
particle sizes should be used such as 30/60 or 20/40 mesh or even 200 mesh for restoration and
cleaning of very delicate surfaces.
Stone - The particle sizes most commonly recommended for cleaning stone are 120 or 200 mesh to remove
graffiti or for soft cleaning. However, other particle sizes (30/60 or 20/40 mesh) can be used for
different jobs, such as bush-hammering or polishing of small areas. For the delicate, time-worn
stone of statues and other architectural structures, or for polished surfaces which must be left unaltered
(e.g. brilliant marble), spherical calcium carbonate (CARBONART
®
) is recommended.
Marble - GARNET should not be used on polished (brilliant) marble. The recommended products in this
case are sodium bicarbonate or spherical calcium carbonate (CARBONART
®
) to be applied with
an optional water sprayer to avoid damaging the treated surface. If the treated surface is naturally
matt and graffiti removal is necessary, GARNET can be used in the particle sizes 350/200/120
mesh. GARNET, however, should be used in this case after carrying out low-pressure tests.
Glass - To remove graffiti or dirt from glass surfaces, water-soluble sodium bicarbonate is used, while
to opacify a surface and obtain either “positive” or “negative” decorations, the naturally
abrasive
GARNET mineral can be used. The right particle size should be selected according to the desired
type of finish.
Iron - To remove rust or paint, the naturally abrasive GARNET mineral in particle sizes such as 20/40,
30/60 or 80 mesh can be used, to obtain clean surfaces with the ideal degree of roughness to
allow good adhesion of the painting product used. The right particle size should be selected according
to the desired type of finish.
The GARNET particle size should be chosen according to the type of work to carry on.
To have more information on the characteristics of blasting media and on their
suggestions, please refer to the technical sheet of each abrasive, available on our web
page www.ibix.it.