Glass Beads / Glass Microsphere

Specification conform to AASHTO M247, BS6088 A/B, EN1423, EN1424, TT-B-1325 A/B, JIS R3301.

Appearance: Clean, apparent, no obvious impurity
Reflection Index: 1.5-1.61, 1.90-1.93, 2.20
Gravity: 2.4-2.6g/cm3 SiO2 content > 62%
Composition: Sodium lime glass composition
Roundness > 80% Hardness (Moh's): 5.5

1. Specification of Glass Beads for Road Marking
Usage: Glass Beads for Road Marking can improve visibility of the traffic markings and road signs and supply safer night driving conditions. When driving at night, the headlights light on the graticule of glass microsphere, the glass microsphere can make the light of car-light to reflect parallel, and make the driver distinguish the direction in order to improve driving safety. For glass microsphere of various gradations, when the top big sphere is worn, the appeared bottom small sphere can be used continuously.

There are two Grades: Grade A & Grade B and high refractive index Glass Beads available:

Grade A, used to be mixed with the paint prior to stripping the road. As the paint layers wear, the beads are exposed giving the enhanced visibility of road markings.
Grade B, used to be dropped on the freshly stripped paint surface on the road to give immediate enhanced visibility to night drivers.
Grade B product is generally used.

Other usage glass bead
1) Glass bead for Metal Cleaning and Polishing
2)Glass bead for deluxe photoetch decoration, filler and reinforcement.
3)Coated Glass Microsphere

2. Sandblasting Glass Bead
Usage: Glass Bead for Sand Blasting

Glass beads are widely used for blasting and polishing purposes, can be used for cleaning the moulds for forging, casting, glass, rubber, etc., for removing of the tensile stress and increasing and improvement of the corrosion resistance and fatigue life of the component such as aircraft engine turbine blades, haft, landing gear, springs etc., for deburring and cleaning of IC packing lead, cleaning and deburring of non-ferrous castings, for decorative finishing of the component surfaces, etc. It is used for cleaning the turbine, blade and axle of the airplane engine.