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Abrasive Tools and Machinery
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Recom Engineering Abrasive Store For Online Shopping
 A diamond tool
is a cutting tool which contains diamond segments for cutting through a wide variety
of materials which other cutting tools cannot. The segments are composed of diamond
crystals and powder metal which form the bond, or 'matrix', of the segments. The
bond is one of the prime factors when selecting which tool to use for cutting a
specific material depending on how hard, or abrasive, the material is. The bond
is what decides the rate at which the metallic powders wear down and expose new
diamond crystals at the surface to maintain what would be considered a “sharp” edge.
Diamonds should not be used for cutting steel or iron, as carbon will dissolve into
the workpiece and lead to tool wear and work hardening. Three other materials are
used for cutting steels where diamond would be used: Cubic boron nitride (cBN, the
second hardest material known), aluminum oxide, and silicon nitride tooling may
be used. For cutting hard materials, a diamond blade with a soft bond would be needed.
This means the metallic powders in the segments (teeth) of the diamond blade wear
fast enough to release old, dull crystals, exposing new diamond at the edges to
continue cutting efficiently. Inversely, to cut a soft abrasive material like asphalt
or freshly poured concrete, you would need to use a diamond blade with a hard bond
so that the segments do not wear down prematurely and the blade is not put to waste.
Diamond is especially suited to cut highly abrasive materials, such as ceramics.
The diamonds used in these tools are synthetic or natural industrial diamond of
different grain sizes and shapes. Categories of Diamond Tools Diamond Dressing Tools
Diamond dressers, Which is, single point or multipoint brazed to a steel shank and
are used for truing and dressing of grinding wheels, mostly in automobile industry.
After enormous research, the shape and sizes were invented like Grit impregnated,
Blade type, Crown type, disc type etc. The advantages of multi point over single
point are, 1. The whole diamond can be used unlike single point when the point is
blunt you have to reset and after few resetting the diamond is wasted. 2. More accuracy
specially in form grinding, blade types are used. Blades consists of elongated diamonds
and the thickness is controlled and are available from 0.75 mm to 1.40 mm. 3. Grit
type tools are of tough grade and can even use for bench grinders. 4. Since small
points are used, these diamonds are of cutting edge with natural points unlike single
points are brutted points. 5. Cost will also be very low since small diamonds are
used. Diamond value varies more according to size. Many diamond tools don’t cut
like a knife or saw blade, instead they grind. They usually have segments, or teeth,
welded to the “cutting” edge of the tool which contain exposed diamond crystals
for grinding. For example, with a diamond blade, the saw operator will push the
blade through the material. The blade will begin to cut through the material and
the material being cut will begin the wearing process of the diamond blade, at the
rate of which the blade advances or the depth at which is being cut. The exposed
diamonds will break into smaller pieces when cutting. Hard, dense materials will
fracture the diamonds faster. As this happens, the material being cut also wears
down the metal bond through abrasion. Highly abrasive materials will wear the bond
faster, exposing new diamond crystals to continue cutting. PCD Cutting Tools Polycrystalline
diamond(referred to as PCD) is formed in a large High Temperature-High Pressure
(HT-HP) press, as either a diamond wafer on a backing of carbide, or forming a 'vein'
of diamond within a carbide wafer or rod. Most wafers are polished to a mirror finish
then cut with an Electric Discharge Machine (EDM) into smaller workable segments
that are then brazed onto the sawblade, reamer, drill or other tool. Often they
are EDM machined and/or ground an additional time to expose the vein of diamond
along the cutting edge. Today these tools are mostly used for machining of nonmetallic
and nonferrous materials. Diamond Paste and Slurry Diamond pastes are used for polishing
materials that require a mirror finish. Often used in metallurgical specimens. Also
used widely in carbide dies, carbide seals, spectacle glass industry and also for
polishing of diamonds. Diamond electroplated tools Diamond powder deposited through
electroplating are used in form of files, or small grinding applications. It has
also found a new use of making nail files for nails. SPDT Tools SPDT, or Single
Point Diamond Turning, utilizes a solid, flawless diamond as the cutting edge. SPDT
is a very accurate machine process used to create finished aspherical and irregular
optics without the need for further polishing. The most accurate machine tool in
the world, the LODTM at Lawrence Livermore National Labs, has a profile accuracy
estimated at 23 nanometers. Differences in method PCD tools are used extensively
in automotive and aerospace industries. They are ideal for speed (9000+ SFM) machining
in tough and abrasive aluminum alloys, and high abrasion processes such as carbon
fiber drilling, and ceramics. The diamond cutting edges make them last for extended
periods without having to shut down processes to replace tooling. High volume processes,
tight tolerances, and highly abrasive processes are ideal for diamond tooling. SPDT
is used for optics, and for flat surfaces where both surface finish and irregularly
high dimensional accuracy are required when lapping would be uneconomical or impractical.
The grinding method is ideal for materials that do not cut but are ground; stone,
cement, carbides are all difficult to process normally. Often this makes a diamond
abrasion method necessary. Uses Diamond-edged tools are commonly used for cutting
a wide variety of very hard construction materials, including reinforced and cured
concrete, all types of brick and cinder blocks, dense metals, rebar, asphalt, granite,
marble, travertine, porcelain, and many other types of materials which cannot be
cut with ordinary cutting tools. * For more detailed explaination of how to use
a diamond drilling holesaws see Diamond_drilling_porcelain Types * Diamond saw blades:
For high-speed gas powered cut-off saws, walk behind saws, handheld grinders, bridge
saws, table saws, tile saws and other types of saws. * Diamond tipped grinding cups:
Used commonly on hand grinders for grinding concrete or stone. * Diamond tipped
core bit Diamond drilling porcelain or holesaw: Hollow steel tube with diamond tipped
segments for drilling holes through concrete walls in the construction industry,
porcelain tiles or granite worktops in the domestic industry, or also used for sample
core extractions in the mining industry. * PCD tool insert: Used in machine tools
for ceramics and high speed aluminum machining. * SPD tool insert: Used in turning
centers for optics and precision surfaces. Other diamond tools * Concave blades:
For cutting curves in countertops to install sinks or sculpt statues. * TuckPointers:
Thick diamond blades for restoration - grinding and replacing mortar. * Crack chasers:
Thick V-shaped diamond blades for repairing cracks in concrete. * Polishing pads:
Pads with diamond crystals for polishing marble and other fine stone. * Diamond
wire cutting: wire with diamond crystals for cutting.
Abrasive Machining is a manufacturing process where material is removed from a workpiece
using a multitude of small abrasive particles. Common examples include grinding,
honing, and polishing. Abrasive processes are usually expensive, but capable of
tighter tolerances and better surface finish than other manufacturing processes.
Mechanics of Abrasive Machining Abrasive machining works by forcing the abrasive
particles, or grains, into the surface of the workpiece so that each particle cuts
away a small bit of material. Abrasive machining is similar to conventional machining,
such as milling or turning, because each of the abrasive particles acts like a minature
cutting tool. However, unlike conventional machining the grains are much smaller
than a cutting tool, and the geometry and orientation of individual grains are not
well defined. As a result, abrasive machining is less power efficient and generates
more heat. Abrasive Machining Processes Abrasive machining processes can be divided
into two categories based on how the grains are applied to the workpiece. In bonded
abrasive processes, the particles are held together within a matrix, and their combined
shape determines the geometry of the finished workpiece. For example, in grinding
the particles are bonded together in a wheel. As the grinding wheel is fed into
the part, its shape is transferred onto the workpiece. In loose abrasive processes,
there is no structure connecting the grains. They may be applied without lubrication
as dry powder, or they may be mixed with a lubricant to form a slurry. Since the
grains can move independently, they must be forced into the workpiece with another
object like a polishing cloth or a lapping plate. Common abrasive processes are
listed below. Bonded Abrasive Processes * Grinding * Honing, superfinishing * Tape
finishing, abrasive belt machining * Buffing, brushing * Abrasive sawing, Diamond
wire cutting, Wire saw Loose Abrasive Processes * Polishing * Lapping * Abrasive
Flow Machining (AFM) * Water-jet cutting * Abrasive blasting * Mass finishing, tumbling
o Open barrel tumbling o Vibratory bowl tumbling o Centrifugal disc tumbling o Centrifugal
barrel tumbling Abrasives The most important property of an abrasive is its hardness.
For abrasive grains to effectively cut, they must be significantly harder than the
workpiece material. They can be grouped based on their hardness into two categories:
conventional abrasives and superabrasives. Conventional abrasive materials have
been used by man since the advent of machining. They are made of materials that
exist naturally on Earth, and they are abundant and cheap. Conventional abrasives
can suitably machine most materials. Superabrasives are much harder than conventional
abrasives. Since they are much more expensive, they are the used when conventional
abrasives will not suffice. Common abrasives are listed below. Conventional * Aluminum
oxide (Corundum) * Silicon carbide * Emery * Pumice * Sand Superabrasives * Diamond
* Cubic Boron Nitride (CBN), Borazon.
Coated abrasives are used by hand or on machines, applications are extremely varied,
at home and in the industry for: * fine finishes: hand sanding or polishing of wooden
cabinets, car bodies primers, metals. * high precision operations: optical lens
polishing, magnetic head superfinishing. * medium stock removal with portable or
fixed machines: floor sanding, disc grinding of metal, endless belts grinding of
wood, metal, glass. * heavy stock removal with wide (up to 3 m) belts on high power
machines (up to 400 watts) to grind stainless steel sheets or coils or to calibrate
plywood or chipboards panels. Sandpaper and emery cloth are coated abrasives for
hand use, usually non precision. These two terms are used by general public in place
of "coated abrasives". Other coated abrasives include, Sanding cord, Sanding pads,
sanding belts and sanding discs. Varients are available for use by hand or as components
for power tools.
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Item |
Manufacturer |
Contact Information |
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Diamond Cup Grinding WheelDiamond Coned Grinding WheelFlexible polishing padAbrasive Stones for Ceramic PolishingDiamond Rubbing Block
Laser Welded BladeSegment Diamond Saw Blade |
www.grindingwheels.cn |
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Dasha Mingxing Industrial zone,ZhangCa,Foshan 528051,Guangdong,China
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Tel : 0086-757-83118451 or 80330898
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Fax : 0086-757-82512546
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http://www.grindingwheels.cn
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Marketing contact : Mr. Qian |
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e-mail :
sales@grindingwheels.cn
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Coated Abrasives: Rolls, sheets, discs,
belts
Brushlon: Rolls, discs, sheets, wheels
Finishing Compounds and Glazes: “Finesse-It”, “Perfect-It”
Stikit Products: Rolls, sheets, and discs
Superabrasives and Microfinishing
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www.beesonhardware.com |
Hardware & Lumber
Pete Vitola
V.P. of Beeson Hardware Company, GM of Hardware & Lumber
336-821-2100
pvitola@beesonhardware.com
Beeson Hardware
201 Sheffield Street
High Point, NC 27260
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Abrasive Belts
Specialty
Abrasives
Air & Hand Tools
Machines
& Bonded Abrasives
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www.americanabrasive.com |
FAX 909-980-3096
10722 Arrow Rt. #118 Rancho Cucamonga, CA 91730 - USA
Sales@AmericanAbrasive.com
Sales: (909) 980-0256
Customer Support: (909) 980-0256
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- Abrasive paper ,Abrasive cloth
- Abrasive stitch bonded cloth,Abrasive fibre,Abrasive film
In the following tool forms:
- Belts,Discs,Sheets,Interlined sleeves, Rolls,Flap discs,Flap wheels,Flap wheels
with shaft
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www.hermesabrasives.com
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Hermes Abrasives Pte Ltd.
Jurong Industrial Estate
12 Tuas Avenue 8
SGP-Singapore 639227
Tel. +65 68612747
Fax +65 68612641
Email: Sales@hermesabrasives.com.sg |
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Coated Abrasives
Surface Conditioning Products
Superabrasives
Microfinishing Systems |
www.massasoit.com
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Massasoit Tool Company
110 Minnesota Avenue
Warwick, RI 02888-6026
Tel. (800) 648-6050
Fax (800) 274-8424 |
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Abrasives, Grinding Wheels, Cutoff Tools
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www.abrasivebrokers.com |
Abrasive Brokers & Tool Supply
1695 Rochester Road
Troy, Michigan 48083
Tel: 248-689-7880
Fax: 248-689-1667 |
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Abrasives for polishing, slicing & nuclear applications. |
www.ukabrasives.com
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U.K. Abrasives
3045 MacArthur Blvd.
Northbrook, Illinois 60062
Tel: 847-291-3566
Fax: 847-291-7670 |
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Including MX laminated abrasives in multiple shapes, grit sizes & forms,
as well as rubberized abrasives such as abrasive blocks, abrasive straight wheels,
abrasive sticks, abrasive wheels, abrasive cones & abrasive points. Applications
include: stainless parts fabrication, castings, gear manufacturing, pots & pans
manufacturing, automotive, metal removal (fine finishes on stainless steel, aluminum,
ferrous & titanium), aerospace/aircraft, commercial kitchen equipment, stainless
steel food container production, tool makers, stainless steel parts manufacturing,
die & mold producers. Basic applications include: cleaning, light deburring,
polishing & smoothing.
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www.cratex.com |
Cratex Manufacturing Co., Inc.
328 Encinitas Blvd.
Encinitas, California 92024
Tel: 760-942-2877
Fax: 800-788-0463 |
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White aluminum oxide (used with tool room wheels), abrasive belting, depressed center,
bench whells, flap discs, ceramic aluminum oxide wheels, pedestal wheels, cutting
discs, surface tool room, grinding wheels & big abrasive wheels. |
www.cgwheels.com |
CGW, Camel Grinding Wheels, USA
7525 N. Oak Park Ave.
Niles, Illinois 60714
Tel: 800-760-6987
Fax: 800-447-3731 |
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Fine abrasives and ultra-fine abrasives such as silicon carbide, aluminum oxide,
ceriums, garnet carbide & boron carbide. Other abrasive applications include
metals, glass, semiconductor materials and quartz. |
www.microgrit.com
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Micro Abrasives Corp.
720 Southampton Road
Westfield, Massachusetts 01086
Tel: 413-562-3641
Fax: 413-562-7409 |
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Abrasive products include fasteners, grinders, drives, cutters, adhesives, plumbing
tools, hoists & machine tools. Brands include: Grier, Scotch-Brite, 3M, Tyrolit,
Bay State Abrasive & Field. |
www.riscoinc.com |
Richmond Industrial Supply Co., Inc.
Richmond, Indiana 47375
Tel: 765-962-0575
Fax: 765-962-7460 |
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Abrasives For Metal, Wood & Other Applications. Including A Complete Line Of
Surface Conditioning Products & Coated Abrasives, Belts, Wheels & Disks
For A Broad Range Of Industries. Also Hand Sanding Tools & Accessories, Cartridge
Rolls, Bench Area Supplies & Even Run Bands.
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www.mmm.com/abrasives
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3M Abrasive Systems Div.
3M Center, Bldg
St. Paul, Minnesota 55144
Tel: 651-733-2989
Fax: 800-852-4668 |
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Major Abrasives Manufacturer offering a complete line of Diamond Dressing Tools
& Sharpening Stones, Grinding Wheels, SuperAbrasives, Non-Woven Nylon Abrasives
& Accessories. Products are engineered to meet performance requirements for
various applications using various materials. Offers over 6,000 bonded, coated &
superabrasives. |
www.norton.sgna.com
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Norton Abrasives
1 New Bond St.
Worcester, Massachusetts 01615
Tel: 800-446-1119
Fax: 508-795-4130 |
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