Rewa - glass beads

PRODUCTS

Glass beads

Product specification

Glass beads represent non-metal synthetic and reusable abrasive material. Their abrasive grains are spherical and of exceptionally smooth surface. The dust released during grit blasting with glass beads does not contain any free, crystalline and chemically unbound silica SiO2, and it does not pose any hazard to employees or environment.

Typical chemical composition

SiO₂	72,00 — 73,00%
Na₂O	13,30 — 14,30%
K₂O	7,20 - 9,20%
CaO	7,20 - 9,20%
MgO	3,50 - 4,00%
Al₂O₃	0,80 - 2,00%
SO₃	0,20 - 0,30%
Fe₂O₃	0,08 - 0,11%

Physical properties

specific gravity: 2.4 - 2.6 kg/dm3

bulk density: 1.4 - 1.5 kg/dm3

hardness on the Mohs scale: 6

modulus of elasticity: high

uniform structure

chemically inert

Available grain sizes

0 - 50 µm

40 - 70 µm

70 - 110 µm

90 - 150 µm

100 - 200 µm

150 - 250 µm

200 - 300 µm

300 - 400 µm

400 - 600 µm

400 - 840 µm

600 - 800 µm

Packing:

25-kg bags placed on a wooden pallet and wrapped with heat shrinkable foil.

Applications:

surface treatment of soft materials like aluminium, and their alloys

blasting welds and scales on stainless steel surface

shot peening

glazing, brightening and giving uniform outlook to surfaces, removing traces of surface damages

and other treatments

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