GEMS UNLIMITED
GEMS - TRADING IN GEMS AND PRECIOUS STONES, MINING PROPERTIES.
CONTACT
SILESIA GROUP INC., P.O. BOX 15823, CLEARWATER, FL 33763-5823,
USA
DIAMONDS
SUBSCRIBE FOR NEW OFFERS OF DIAMONDS EMAIL TO YOU ON WEEKLY BASIS
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Diamonds
Powders
Effective July 4th 2002:
when purchasing diamond powders
you need to add import - export fee of 15%,
shipping time - 6 weeks +
Micron powders “Tomal” are high efficient diamonds for lapping, finishing,
grinding different kinds of materials, such as jewels, semiprecious stones,
hard alloys, stones, glass, ceramics etc.
According to our technology micron diamonds “Tomal“ very carefully sorted
and sieved, have the uniform form of particles, wear resistance, and ideal
distribution on the size and structure. The uniform quality does not vary
at plenty and large consignments. The micron diamonds “Tomal” are widely
applied in firms of USA and Europe and demonstrate not only high efficiency,
but also maximum cleanliness of a surface after processing.
CHARACTERISTICS
1. Uniform sorting of particles
As it is visible on a illustration, diamond micro powders consist of
regular intervals particles, the shape of which are provided by perfect
control. Such diamond micro powders can provide high efficiency of processing
and maximum cleanliness of a processable surface. The micron diamonds “Tomal”
do not contain particles of the changeable form. It is provided with own
unique technology “Tomal” from synthesis to classification.
2. Ideal distribution of particles on the sizes
Diamond micro powders “Tomal” are classified according to Russian,
European or USA standards. The diamonds are classified and considered the
most precisely pursuant to special raw. (See the table) This strict control
diamond of micro powders guarantees maximum grinding effect, excepting
unexpected trouble at application.
3. Uniformity and stability of quality
The uniformity and stability of quality diamond micro powders are result
of careful manufacturing. The quality should be very important factor accordingly
at manufacturing and sorting, which is observed from delivery to delivery.
It should help to avoid unexpected troubles at application. Diamond micro
powders ”Tomal" is quite precisely supervised during of all unique processes
- from the synthesis to classification. It can guarantee to the consumers
of micro powders to receive best application and efficiency of results
at constant consumption of a complete number of diamonds in grinding, lapping
and polishing.
DIAMOND MICRO POWDERS «TOMAL»
ACM - representative of diamond micro powders, which has many fine characteristics
and excellent reputation. Is applied not only as purely powder and in diamond
pastes, but also for manufacturing of diamond wheels on resin bond, used
for dry grinding.
ACM Ni - Nickel coated micron diamond powder, is applied for wet grinding.
The sizes, mkm ACM ACM Ni
0 - 1
0 - 2
1 - 2
2 - 3
3 - 5
2 - 6
5 - 7
4 - 8
7 - 10
5 - 12
7 - 14
8 - 20
14 - 20
20 - 28
20 - 40
30 - 40
40 - 60
AC4 Ni56 (analog RVG-W) - is the most popular general-purpose
diamond product for wet and dry grinding applications in resin bonded diamond
wheels. AC4 (analog RVG) - is uncoated synthetic resin bond diamond. It
is typically used for grinding heat sensitive materials or applications
where power is limited. AC3 Ni56 (analog RVG-880) - is a premium diamond
product designed specifically for wet grinding carbide and ceramic tooling
where no steel is present. AC4 Cu50 (analog RVG-D) - is a high-performance
diamond product engineered for dry grinding “carbide only” workpieces.
AC4 Ni30 (analog RVG-W30) - is a superior diamond product engineered for
general purpose dry grinding of workpieces ranging from “carbide only”
to “carbide/steel”. AC6 Ni55 (analog CSG-II) - is a special-purpose diamond
product recommended for carbide/steel grinding applications where more
than 1/3 steel is present in the workpiece.
PROPERTIES / CHARACTERISTICS Synthetic diamond products for resin grinding
are designed for different grinding requirements. The differences in diamond
crystals and metal coatings result in significant differences in performance
characteristics.
AC4 (analog RVG) - is a friable, irregular-shaped, uncoated diamond.
The irregularity of the AC4 surface results in better crystal retention,
while high friability enables controlled diamond micro fracturing, wheel
self sharpening and free cutting action. AC4 Ni56 (analog RVG-W) - is AC4
diamond coated with a nickel base alloy to 56 weight percent. The nickel
coating enhances crystal retention in the bond. It also reinforces the
AC4 crystals to control most fracturing. The coated AC4 requires more power,
but the “G-ratio” improvement is so great, AC4 Ni56 has become the most
widely used product. AC4 Ni56 is known as the standard of the diamond wheel
industry for grinding cemented carbides. AC4 Ni30 (analog RVG-W30) - is
AC4 diamond coated with a nickel base alloy to 30 weight percent. AC4 Ni30
is an effective compromise between free cutting AC4 and longer life AC4
Ni56. The relatively free cutting characteristics of AC4 Ni30 offer the
important advantage of minimising heat. This reduces the chances of burning
carbide/steel workpieces. AC4 Cu50 (analog RVG-D) - is AC4
diamond coated with copper to 50 weight percent. The copper coating increases
the thermal conductivity of the wheel rim. This improves heat dissipation
during grinding. The copper coating also improves the mechanical strength
of the crystal and retention of the crystal in the bond. AC3 Ni56 (analog
RVG-880) - is a specially grown diamond crystal, which is even more friable
than AC4. It is coated with a nickel base alloy to 56 weight percent. The
special AC3 Ni56 crystal offers freer cutting characteristics for longer
life and lower power when wet grinding cemented carbide. AC6 Ni55 (analog
CSG-II) - is a special diamond, which is tougher than AC4. It is coated
with a nickel base alloy to 55 weight percent. This tougher crystal reduces
wheel loading and minimises workplace burn when grinding work pieces where
more than 1/3 steel is present in the work piece. AC6 - is a special uncoated
diamond wich is tougher than AC4. Are used on metal bond wheels for machining
hard alloys, ceramics and glass.
STANDARD DIAMOND SIZES
MECH SIZE AC4Ni56 AC4 AC3Ni56 AC4Cu50 AC4Ni30 AC6Ni55
60/70 · · · · · ·
70/80 · ·
80/100 · · · · · ·
100/120 · · · · · ·
120/140 · · · · · ·
140/170 · · · · · ·
170/200 · · · · · ·
200/230 · · · · · ·
230/270 · · · · · ·
270/325 · · · · · ·
325/400 · · · · · ·
COATING CHARACTERISTICS
OF THE DIAMOND PRODUCT
Dry grinding Wet grinding
Product Cemented Carbide Cemented Carbide/ Steel Cemented Carbide Cemented
Carbide/ Steel
AC4 FAIR GOOD GOOD GOOD
AC4Ni56 GOOD BETTER 0-20% Steel BETTER BETTER
AC4Ni30 GOOD BEST Overall GOOD GOOD
AC3Ni56 BETTER NO BEST NO
AC4Cu50 BEST NO NO NO
AC6Ni55 NO BEST over 30% Steel NO BEST
Please, send us grit sizes and amounts you need and we can discuss
prices.
As well we can manufacture and supply any resin bond diamond powders
and any quantities you need with different hardness and grit size sieved
in mesh or micron.
For further information, please, contact to our export sales department
PRICES
STOCK COMPANY
MOSCOW
INDUSTRIAL UNION FOR DIAMOND TOOLS PRODUCTION
|
|
Moscow
reg., 140072 Russia
|
Thank
you for your interest.
We
can offer Diamond powders from our warehouse in Moscow.
Effective July 4th 2002:
when purchasing diamond powders
you need to add import - export fee of 15%,
shipping time - 6 weeks
+
Resin
bond powders
|
|
Type
of powder and grit size
mesh (micron size)
|
Amount
ct
|
Price
per ct, USD EXW
|
|
ÀÑ6
270/325 (53/45)
|
1 500 000,00
|
0,06
|
|
ÀÑ6
325/400 (45/38)
|
2
000 000,00
|
0,06
|
|
Total:
|
5
000 000,00
|
|
|
ÀÑ4Ni
100/120(150/125)
|
60
000,00
|
0,12
|
|
ÀÑ4Ni
120/140(125/106)
|
30
000,00
|
0,12
|
|
ÀÑ4Ni
140/170(106/90)
|
46
000,00
|
0,12
|
|
ÀÑ4Ni
170/200(90/75)
|
25
000,00
|
0,12
|
|
ÀÑ4Ni
200/230(75/63)
|
70
000,00
|
0,12
|
|
Total:
|
231
000,00
|
|
|
|
|
|
Micron
powders
|
Type
of powder and grit size
micron size
|
Amount
ct
|
Price
per ct, USD EXW
|
|
ÀÑÌ
60/40
|
20
000,00
|
0,095
|
|
ÀÑÌ
40/28
|
150
000,00
|
0,095
|
|
ÀÑÌ
28/20
|
200 000,00
|
0,095
|
|
ÀÑÌ
20/14
|
300 000,00
|
0,095
|
|
ÀÑÌ
14/10
|
20 000,00
|
0,095
|
|
ÀÑÌ
10/7
|
130 000,00
|
0,11
|
|
ÀÑÌ
7/5
|
60 000,00
|
0,12
|
|
ÀÑÌ
6/2
|
49 000,00
|
0,08
|
|
ÀÑÌ
5/3
|
150 000,00
|
0,095
|
|
ÀÑÌ
3/2
|
100 000,00
|
0,095
|
|
ÀÑÌ
4/2
|
40 000,00
|
0,08
|
|
ÀÑÌ
2/0
|
120 000,00
|
0,07
|
|
ÀÑÌ
2/1
|
150 000,00
|
0,095
|
|
ÀÑÌ
1/0
|
110 000,00
|
0,07
|
|
ÀÑÌ
0-0,5
|
38 430,00
|
0,095
|
|
ÀÑÌ
25-20
|
60 800,00
|
0,095
|
|
ÀÑÌ
20-30
|
13 990,00
|
0,095
|
|
RB
40-60
|
4
000,00
|
0,095
|
|
Total:
|
1
716 220,00
|
|
Please,
send us grit sizes and amounts you need and we can discuss prices.
As
well we can manufacture and supply any resin bond diamond powders and any
quantities you need with different hardness and grit size sieved in mesh
or micron.
For
further information, please, contact to our export sales department
INDUSTRIAL
DIAMONDS
DIAMOND'S POWDERS
Diamonds from Africa and Australia
DIAMONDS FROM
INDIA