DIAMOND TOOLS
The materials that can be processed
with diamond tools can be classified in the below-listed main groups:
GRANITES: We call granites all the eruptive rocks with granular structure, characterized
by
high contents of silica and potassic
feldspars. In commercial terms, granites are all the rocks
with crystalline formation.
MARBLES: Calcareous rocks which, due to metamorphism, have assumed a crystalline
structure and uniform grain. They can
reach, if processed, a good smoothness and polishing.
The additional components (quartz,
graphite, iron-oxyde, etc.) can give them several colours
and aspects.
SERPENTINES: Metamorphic rocks, made of magnesium fillosilicates with tracks of ironed
aluminium, manganese and nickelium. They
have different colours, generally greenish.
TRAVERTINES: Chemical-sedimented calcareous rocks, formed by the precipitation of
calcium carbonate. Their colour is
white-yellowish or light-redish; they can be polished and
have porous structure.
SANDSTONES: They are made of sedimentary rocks which contain at least 50% of sand's
granules. These granules can have
dimensions from 0,062 mm up to 2 mm. They are cemented
between each other by a natural
matrix made of limestone or siliceous concrete.
CONCRETES: In a broad sense, concretes are all the substances which has a binding action
towards other materials. They can be
artificially manufactured by cooking limestone and clay
at high temperatures.
ASPHALTS: In commercial terms, asphalt is a product made of rubble aggregate mixed with
bitumen.
REFRACTORIES: These products derive from clayey materials with an addition of other
compnents, such as alumina. Their main
property is the resistance to high temperatures. The
clay's granules are inferior to 2 micron.
GLASS: A material can be considered vitreous when it has the phisical characteristics of
rigidity, transparence and friability.