Resin Bonded Diamond and CBN Grinding Wheels

Electroplated CBN Grinding Wheels

CBN grinding wheels for sharpening band saws

MARKINGSAW PROFILEDIAMETER D [mm]HEIGHT T [mm]ORIFICE H [mm]
Profil FFenes12722,212,7
15022,220
20322,232
Profil RMRo-Ma12722,212,7
1502022,2
20322,232
Profil SSword127912,7
Profil WMWood-Mizer 10/3012722,212,7
15022,220
20322,225,4
20322,232
Profil WM WINTERWood-Mizer 9/2912722,212,7
20322,225,4
20322,232

Electroplated grinding wheels have a single layer of CBN grit and are characterised by a greater protrusion of the grit from the bond and high efficiency, which decreases as the grit is blunted.
Electroplated CBN grinding wheels require the use of a coolant.

Grinding Wheels for Cutting

Grinding Wheels for Cutting

1A1R

Resin-bonded diamond grinding wheels are used for cutting sintered carbides, technical ceramics, plastics and laminates, as well as quartz glass.
Metal-bonded diamond grinding wheels are used for cutting glass, crystals, ceramics, hard magnetic alloys, precious and semi-precious stones, as well as refractories. Metal-bonded grinding wheels require the use of a coolant.
Resin-bonded CBN grinding wheels are used for cutting cured metal alloys, bearing steel, high-speed steel, heat-resistant steel and magnetic steel.

Diamond Dressers

Diamond dressers are used for profiling and sharpening ceramic-bonded grinding wheels of artificial corundum and silicon carbide.

Regeneration of Diamond Dressers

Regeneration of the worn diamond dresser consists in fully restoring its usefulness
Having completed proper technological procedures (after soldering the diamond crystal in the housing or after grinding), the dresser can be used in production processes again.
The following items are subject to regeneration:

  • single-point rough diamond dressers
  • single-point ground diamond dressers

Diamond Hardness Testers

Diamond Hardness Testers are intended for hardness measurement. The diamond which is the work piece of the indenter is ground to a geometric – conical or pyramidal – shape.

Rockwell
typ/typeαkt
A120° ± 0.35°0,25
C120° ± 0.35°0,11
Vickers
typ/typeαØdXL
I136° ± 30°53022
II136° ± 30°71229

Diamond Pastes

Diamond pastes are intended for final machining, as well as manual and machine lapping and polishing metals, alloys and non-metallic materials.
Pastes differ in their sizes and percentage content of diamond grit.

WEIGHT CONTENT OF DIAMOND GRIT [%]SURFACE ROUGHNESS (RA)
DIAMOND GRIT SIZENOMINAL SIZE [μm]LOWNORMALBEFORE MACHININGAFTER MACHINING
D4640/2810200,2000,155
D2528/2010200,1600,120
D1620/1410200,1250,095
D1214/1010200,1000,075
D810/710200,0800,060
D67/510200,0630,045
D45/310200,0500,038
D23/210200,0400,32
D12/110200,0320,023

A diamond paste should be stored at a temperature of 25°C ± 5°C. The paste viscosity decreases at a higher temperature, which can lead to the paste losing its homogeneity and, therefore, to the lower quality of processing.

Cooling

Whenever and wherever possible, cooling is recommended. It positively impacts the grinding process and durability of a grinding wheel.
For cooling CBN grinding wheels, it is recommended using mineral oil with the addition of EP. For diamond grinding wheels, you can use water-oil emulsions characterised by the concentration between 3 and 5%.
Advantages of using coolant:

  • decrease in the temperature between the grinding wheel and the material being machined (cooling),
  • reduction of the friction between the grit and the material being machined (lubrication),
  • removal of the grinding process product (cleansing).

 

Diamentpol offers two products:

  • Non-emulsifiable machining oil of low viscosity. Preparation of highly refined mineral oils with additives. Contains carefully selected additives such as EP which do not contain chlorine nor sulphur and is inactive towards copper.
  • Fluid for metal machining – cooling liquid. Synthetic liquid, transparent, miscible with water. Creates transparent aqueous solutions of green colour. Developed so that specific requirements are fulfilled as regards occupational health and environmental protection. The product does not contain nitrates, boron nor amines. Recommended concentration: 3 to 5%.