PLACE ORDER NOW
CHECK
OUR LOW PRICES
Page
Top
HOME
| INTERNET
SPECIALS | FAQ| DIAMOND
BLADES |
CORE BITS| ORDER|
AGGREGATE MAP | TESTIMONIALS |
VALUABLE CUSTOMERS |
CONTACT US | BLADE COMPARISONS |
Patriot Diamond Inc.
2720 E Oakland Park Blvd #103
Ft. Lauderdale, FL. 33306
Richard Rice
NATIONAL AND INTERNATIONAL
954-563-8294
FAX 954-563-8292
E-MAIL:blades@diamondblade.net
Corporate Offices
1-800-366-0421
National Sales Office
1-800-366-0427
United States and Canada
Fax 1-800-548-0421
http://www.COREBITS.NET/index.htm
http://www.COREBITS.NET/index.htm
http://www.COREBITS.NET/index.htm
core bits, core bit, core drills, diamond core
drill bits
COREBITS.NET , core bits, core bit, core drills, diamond core drill
bits, diamond hole saws, manufacturers and sells industrial drilling
tools, supplies cutting equipment,
diamond cutting blade for asphalt, concrete, masonry, granite, marble,
sandstone, terrazzo, tile, brick, wet or dry,and it's Diamond Wire,
Diamond Wire Saws,Diamond Ringsaw Blades, Ringsaws .
DIAMONDS
The hardest material known to man. Man has found a way to manufacture
diamonds by subjecting graphite to very high temperatures and pressure.
These synthetic diamonds resemble the natural diamond, sharing the properties
of density and hardness.
Diamond, one of the world's most important MINERAL resources, is pure,
natural carbon with the atoms organized in a
close-packed cubic arrangement that gives the stones their hardness.
The external forms of natural diamond crystals (isometric system. Shows
the same symmetry.
The commonest crystal form is the octahedron, which looks like two four-sided
pyramids placed base to base.
Because diamond is so much harder than any other natural or artificial
substance known, it is ideal for both gem and industrial purposes. Special
optical properties guarantee its preeminence among gems.
First, its high refractive index (2.417. , or light-bending ability,
enables it to throw back almost all the light that enters a well-cut
gem. This gives rise to the gem's brilliant, or adamantine, luster.
Second, it exhibits strong dispersion (0.058. , Or the ability to
separate the various colors of the spectrum. This causes the gem to
throw back the bright flashes of separated
colors ("fire". for which it is particularly noted.
INDUSTRIAL USES
Industry uses most uncut diamonds. Diamond-studded rotary bits are
used to drill oil wells and bore tunnels in solid rock.
Much low-grade diamond is crushed to dust, sorted by grain size through
special sieves, and used as abrasive powder.
Depending on the kind of abrasion or grinding needed,
the powder is either sintered into metal disks, formed in carbide grinding
wheels, pressed into metal, or mixed in an oil paste.
The powder is also used to cut and polish gems. Diamond-tipped glass
cutters, glass-etching pencils, and other similar tools
find widespread use. Very thin wire is formed by pulling thick wire
through a graduated series of diamonds with
tiny holes drilled through them. Diamonds for industrial purposes have
been synthesized since the 1950s using
high-temperature,high-pressure techniques, and since the 1960s using
shock-wave techniques.
(Gem-quality diamonds can also be synthesized, but the process is costly.
Technological uses for diamonds were expanded the late 1980s by the
development of methods for depositing diamond
coatings on surfaces. Such uses include the coating of INTEGRATED CIRCUITS
as a whole instead of having to
cool the components of the circuits individually. The coatings may also
be used in prosthetic devices and bio sensors.
MINING AND PRODUCTION
Diamonds occur in two general types of deposits: volcanic pipes through
which molten rock--KIMBERLITE,
now cooled and hardened--rose up from deep within the Earth, and alluvial,
or PLACER, deposits,which were formed by
the erosion of diamond pipes over millions of years.
The earliest productive mines were in the Golconda region of India,
particularly along the Kristna River.
After 1725 this mining district was gradually eclipsed in importance
by the diamond deposits of Brazil.
Diamonds were first mined there along the Jequitinhonha River, in the
Diamantina area of the state of Minas Gerais.
In 1867 a 21-carat stone was discovered on the banks of the Orange
River near Hopetown, South Africa.
A great diamond rush started, and new deposits were discovered that
were more productive than any the world had
ever known. Another major diamond resource was developed in the 1950s
in the Yakutia region of the Soviet Union. By the 1980s the Yakutia
and South African regions and the country of Zaire dominated the world's
diamond market.
The mineral has also been found in smaller amounts in numerous other
places.
In the United States the leading producers include Arizona, Nevada,
and Montana, although the largest gemstones
have been found in an eroded volcanic pipe in Pike County, Ark.
For many years, microscopic diamonds have occasionally been noted in
meteorites; they were attributed to high-speed collisions in space or
with the Earth. In 1987, however, following the discovery of many more
such diamonds, the theory
was developed that they are the product of ancient supernova explosions
of giant stars.
Diamond, one of the world's most important mineral resources, is much
harder than any other natural or artificial substance known. Diamonds
occur in volcanic pipes of ancient origin that come from deep within
the Earth's mantle.
--------------------------------------------------------------------------------
DIAMOND STRENGTH
Diamond shape is very important for good particle strength. The octahedral
shape provides an ideal diamond particle.
Diamond grit that is uniform in this shape and without inclusions or
irregularities will provide the best tolerance against impact
damage. Thus providing optimum performance for cutting tools. The strength
is measured and determined by special equipment.
The result is measured in kilograms of pressure resistively.
--------------------------------------------------------------------------------
DIAMOND MESH
Diamond partials are weighed in carats (1 carat = 200 milligrams.)
Smaller size of grit equals more particles to per carat. Larger size
of grit equals less particles to per carat.
Mesh equals the amount of particles per carat, therefore mesh differences
will change blade characteristics.
Thus providing different cutting applications.
--------------------------------------------------------------------------------
DIAMOND CONCENTRATION
DIAMOND CONCENTRATION
this refers to the weight of diamonds carats that are embedded into
a cubic inch of the bonding agent.
( 72 carats in a cubic inch of material would equal 100% diamond concentration.)
A blade with 25% concentration would contain in the bonding mixture
18 carats total diamond weight per
every cubic inch of material installed onto the blades cutting edge.
Concentration differences will change blade characteristics thus providing
different cutting applications.
--------------------------------------------------------------------------------
BONDING
Bond types; iron and cobalt are most common, however other properties
are used to change the character of the saw blade
to meet the demands of the user. For instance the use of tungsten to
increase wear resistance and boron or chromium for
improved diamond retention.
Bond materials can be changed to meet different cutting applications.
--------------------------------------------------------------------------------
BLADE TYPES
SINTERED DIAMOND BLADES
Sintered blades are usually manufactured (cold pressed, referred to
as sintered).
Although there are sintered hot press blades, these are referred to
as hot pressed
SINTERED BLADE SECTION
CONTINUOUS RIM:
Wet cutting
ceramic tile, hard vitreous tile, porcelain tile, slate, limestone,
blue stone, hard quartz, glass tile, granite.
Thin or extra thin blade: blade of choice or preference to those in
the tile and marble installation, provides smoother cutting.
SEGMENTED RIM:
Dry cutting
Popular applications are; granite, marble, ceramic, refractory.
TURBO:
Wet or dry cutting (faster cutting speed) for granite, marble, ceramic,
refractory;
TURBO WAVE:
Wet or dry cutting (strengthened blade). Popular applications are; granite
marble ceramic refractory.
PROFESSIONAL BLADE SECTION
LASER SILVER FREQUENCY AND BRAZED DIAMOND BLADES
These blades are constructed differently than there sintered counterpart.
Segments are applied to the blade matrix/core in the following manners:
1. Laser welded, high tech computerized laser equipment.
2. Silver or brazed welded, by conventional equipment
3. Frequency welded, by electricity
These blades offer a greater degree of versatility. Therefore able suit
many different needs.
These also offer a greater degree of blade life expectancy.
LASER WELDED SAW BLADES:
These are professional saw blades. Each blade is designed for a specific
purpose.
Available types from general purpose to asphalt over concrete. Available
from soft to tougher bonding agents.
BRAZED SAW BLADES:
Wet cutting
These are professional saw blades. Each blade category has segments
designed for a specific purpose.
Reinforced concrete, asphalt, asphalt over concrete, granite. Available
from soft to tougher bonding agents.
FREQUENCY WELDED SAW BLADES:
These are professional saw blades.
Each blade category has segments designed for a specific purpose: Marble,
granite, and cement.
DIAMOND TUCK BLADES:
Unique blade for the reparation industry; crack chasing in concrete,routing
and cleaning mortar joints.
BLADES WITH HOLES:
Provide extra cooling and noise reduction.
BLADES WITH DROP SEGMENT:
Provides extra protection to core and reduces undercutting.
BLADES WITH DEEP SEGMENT:
Provides extra protection to core and reduces undercutting, while keeping
the same full circumference
contact as the other segments.
--------------------------------------------------------------------------------
TROUBLE SHOOTING
to improve your blade life
1. Check your equipment and insure proper lubrication.
2. Prior to cutting allow blade a 2 to 3 seconds load free rotation.
3. For added sharpness on a new blade try cutting a brick for 5 seconds
(this will allow for better grit exposure. .
4. Always maintain firm grip on equipment.
5. Avoid incline cutting and applying uneven pressure or side pressure.
6. Prior to wet cutting be sure of adequate water pressure and supply.
7. Stop cutting immediately should vibration, shaking, unfamiliar sounds
or noises occur.
8. Allow blade to operate at maximum speed while cutting.
9. Not suitable for ferrous of steel cutting
core cracks
1. Blade is too hard for the material being cut.
2. Excessive cutting pressure, results in the blade core bending and
or flexing.
Metal fatigue will eventually cause core to crack.
3. Worn shafts, damaged machine bearings or insecure blade mounting.
Out of round
1. Blade shaft bearings may possibly be worn. Fit new bearing and ensure
regular lubrication.
2. Blade too hard for the material being cut.
3. Blade shaft bent, worn or grooved.
4. Clamp plates are not properly tightened, allowing the blade to slip
on the shaft.
5. Blade is not mounted correctly, or shaft is grooved.
Tension loss
1. Blade core has overheated.
2. Check machine is running at correct rpm, that flanges are of the
correct and same size.
That there is no wear on the machine bearing
3. The blade is too hard for the application.
4. The blade is spinning on the spindle.
5. The blade is not cutting in straight lines only.
Overheating
1. Overheating can cause many other problems such as core cracks, loss
of tension, and segment loss.
Overheating can be shown by black or bluish discoloration on the core.
2. Wet cutting - inadequate water supply, low water pressure, blocked
jets.
3. Dry cutting - excessive cutting pressure.
Segment loss
1. Blade has twisted of jammed in the cut because the material was not
held firmly.
2. Machine has been twisted or turned while blade is in the cut
3. Blade core has undercut due to cutting below the asphalt into the
sub base.
4. Blade is too hard for the material being cut. Resulting in the blade
hammering in the cut.
5. Blade is deflected in the cut due to the blade flanges being worn
or deformed and failing to provide proper support.
6. Inadequate water supply.
Undercutting
1. Make sure that the blade specification has offset segments to assist
removal of the slurry from the cut.
2. Make sure that the blades is not cutting below the asphalt into
the sub base. Constant rubbing of the loose material causes
premature wear and has no beneficial effect on the cut surface.
3. Make sure that the water supply is correct as increased water flow
will wash slurry from the contact area and reduce undercutting.
Segment cracks
1. The blade is too hard for the material being cut.
2. peripheral speed of the blade is excessive. Uneven segment wear.
1. Insufficient water when wet cutting.
2. Saw head misaligned
3. Equipment defective.
Damaged arbor hole
1. Make sure that the blade is mounted on the proper diameter of the
spindle before tightening. Make sure that the pin holes
slide over the drive pins.
2. The blade will spin or vibrate onto the spindle if the flanges are
not properly tightened.
3. The blade will pound if the saw shaft is badly worn or grooved.
Blade not cutting
1. Check that specification is correct for the material.
2. Blade is too hard for the material being cut.
3. Blades' cutting edge has been glazed, probably due to bond being
too hard.
4. Machine is not powerful enough, or sufferers loss of power.
5. New blade is not well exposed.
6. Segment has mushroomed over due to the bond being to hard.
7. Check direction of rotation.
8. If slot of blade is blocked, use carborundum wheel to remove blockage.
Rapid wear
1. Using the wrong specification for the material being cut.
2. If wet cutting inadequate water supply.
3. Blade wears out of round.
4. Loss of power on the machine due to slipping belts.
Blade wobbles
1. Blade shaft is bent or grooved. Bearings have failed. Blade out
of tension.
2. Incorrect blade speed.
3. Blade is bent.
--------------------------------------------------------------------------------
Tables of Operating Speeds
OPERATING SPEEDS
diameter
mm diameter
inches recommended
r.p.m. Maximum
safe
r.p.m.
105 4 9072 15000
110 4 1/4 8338 13897
115 4 1/2 8063 13300
125 5 7257 12000
150 6 6048 10185
180 7 5184 8730
200 8 4536 7640
230 9 4032 6790
250 10 3629 6115
300 12 3024 5095
350 14 2592 4365
400 16 2268 3820
450 18 2016 3395
500 20 1814 3055
600 24 1512 2550
700 26 1396 2350
800 30 1210 2040
900 36 1008 1700
1000 42 864 1455
1200 48 756 1257
1400 56 644 1092
1600 64 563 955
1800 72 500 849
--------------------------------------------------------------------------------
Knowing your diamond saw blade
core or plate
1. The basic part of the saw blade, the plate the the segments are embedded
on.
2. Cores are prepared differently for variety of applications. From
ridges or waved cores for added strength or with hole
for extra cooling, noise reduction cores, super thin cores and reinforced
cores.
Segments
1. Segments; the cutting area of the saw blade containing the diamond
grit impregnated with the bonding agent.
2. Segment height; the depth of the diamond impregnation of the bond
material.
The height of this material from the base of the blade core to the edge
of the rim.
3. Segment thickness; the width of the diamond impregnated area of the
segment exposed.
4. Segment length; the length of a segment sections from end to end
for segmented, laser, silver, brazed and frequency welded blades.
