§
What are
electroplated tools ?
Ans: Electroplated
Diamond & CBN tools are the most versatile of all
suprerabrasive tools. Plated tools consists of a single layer of
superabrasive tools. Plated tools consists of a single layer of
superabrasive grain (Diamond or CBN) bonded onto the surface
of a preformed metal blank using electro-deposited nickel. Part
of the superabrasive grain is embedded in the nickel layer,
leaving the remaining portion of the crystal (usually 10% to
50%) exposed & protruding from the bond. Due to this grit
exposure, the tough nickel bond & the long lasting quality
of the superabrasive particles, it becomes a very practical,
close-tolerance, aggressive tool.
§
What is the
difference between diamond & CBN tool ?
Ans:
Diamond is used as the abrasive in electroplated tools for
working of non-metallic materials such as fibreglass (FRP),
acrylic, phenolic resins (bakelite), ferrites, epoxy, composite
materials, carbon, graphite, semi-precious stones (sapphire,
agate, zirconia, etc), conventional & mineral glass,
asbestos & friction materials etc. Cubic boron nitride (CBN)
is used in electroplated tools for working of hardened ferrous
materials such as tool & die steels (M2, D2, WPS, En-31,
etc.), hardened cast-irons, stainless steels, Inconels, high
nickel steels, etc., with hardness greater than 45 RC.
§
What are the
advantages of electroplated tools ?
Ans: Electroplated
diamond and CBN tools are used for the cutting & grinding of
a wide range of materials. Because of their method of
manufacture, they offer several advantages over resin &
metal bond tools:
-
They are
extremely free cutting & have the highest MRR (material
removal rate)
-
Can be made
in any complex profile or irregular shape, with very good
form retention.
-
Do not
require dressing & truing to expose the grain.
-
Can be used
wet & also dry, without any coolant or lubricant, due to
low heat generation.
-
Can be used
at very high surface speeds without any hazard.
-
Tool aggressiveness
is easily controlled by choice of grit size & thickness
of nickel layer.
-
User can
supply own blanks; used tools can be stripped & replated.
-
Can be used
as accurate form dressers for conventional grinding wheels
by a simple plunge operation.
§
Which types
of tools are available & what are their applications ?
Ans: "Drester" offers you
an unmatched & continuously increasing range of tools. Our
standard tools are available off the shelf & special tools
are usually delivered within 4 to 6 weeks. We undertake coating
on blanks supplied by the customers & we also offer a strip
& replate service for used tools, thus saving the cost of
expensive blanks. Our range includes :
>>
Files: For tool rooms
& die shops. (Over 100 different varieties of shapes &
sizes)
>>
Circular
Slitting Saws: For FRP, carbon, graphite, bakelite,
asbestos, bonded abrasives, ferrites, ceramics, etc. (100mm to
400mm diameter).
>>
Mounted
Points: For internal
& jig grinding of hard steels & cast irons, ceramics,
bakelite, composites, etc. (1mm to 30mm diameter).
>>
Hollow
Drills: For glass,
bakelite, ceramics, FRP, etc. (3mm to 20mm diameter).
>>
Polishing
Discs / Lapping Plates: For
semi-precious stones. (150mm & 200mm diameter).
>>
Profile
Grinding Wheels / Other Special Tools: Can
be custom-made as per your design / drawing / specifications (upto
400mm diameter)
>>
Multi-layer
tools (New) : Upto
five layers of diamond CBN can be deposited.
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