|
The
mobile sawing of hard materials with diamond drilling were
the first two processes to reach the UK from America in the
1950's where the processes had been developed from the 1930's
to be used on the American concrete road and airfield building
industry.
When
the first sawing machines were imported into the UK the maximum
size of blade was about 450mm and the blades were only suitable
for use in soft aggregates.
Flint
aggregates as found in the South East of the UK were too hard
to cut and for many years Silicon Carbide blades had to be
used on this material until UK companies developed diamond
blades able to economically cut the material.
Diamond
saw blades consist of a steel core on the periphery of which
are brazed or laser welded segments made up of compressed
and sintered diamond grit and metal powders. The infinite
variations and mixtures of these expensive materials are the
toolmakers art and science and is the basis of economical
sawing as we see it today.
Diamond saws in the construction and stone industries come
in a range of sizes from 100mm diameter for hand held grinders
up to 3met diameter for use on large fixed stone saws.
Concrete
Cutters (Sarum) Ltd operate a full range of saws capable of
undertaking all normal sawing work required on Civil Engineering
projects. The saws available range from 10hp petrol push saws
for very light work through petrol and diesel saws in the
20-40 hp range for work where manoeuvrability is important
to 60-70hp saws for deep and production sawing, a specially
built 95hp machine capable of taking a 1.6m blade, plus 3
phase saws for internal work and spark arrested diesels for
work in hazardous locations.
A
wide range of blades are carried in stock in diameters from
300mm up to 1600mm and widths from 3.5mm -25mm, to cut most
materials from very hard Flint aggregates in concrete to asphalt.
Typical sawing operations carried out include control joint
sawing and joint widening in new pavements, production sawing
up to 600mm deep for breakouts and trenches etc., chases for
cables and raising pits through new asphalt layers.
^
back to top ^ |
