Gringing Wheels - Grindind and Honing

Metal- (porous), resin- and/or electroplated bonded grinding wheels with a superabrasive diamond layer used to work tungsten carbide and other materials. Cubic boron nitride (CBN) is used to grind treated or alloyed steels (mainly those between 50 and 70 HRC).

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Resin-bonded grinding wheels' fragility means that the diamonds need better setting on the wheel. Diamonds coated with copper, nickel, titanium, or chrome may be used to improve heat absorption and diamond service life.

Depending on the roughness required, the following FEPA-standard superabrasive grains are used::

• Very coarse: D301 – D251 – D213.
• Coarse: D181 – D151.
• Medium: D126 – D107*- D91* - D76.
• Fine: D64 – D54 – D46.
• Lapping: Special micron grains are used for this process.

The same grain sizes are designated with a “B” mark to refer to CBN.

The usual working velocities for these processes are approximately 35 m/s for diamond grinding wheels and about 60 m/s for CBN wheels, although they can go up to 150 m/s.

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CBN grinding wheels are cooled with cutting oils or with water containing additives in percentages of not less than 5%. Users should avoid water vapour creation in order to prevent decomposition of the CBN.

Gringing Wheels - FEPA shapes

We can make any FEPA shape to the requirements and dimensions supplied by our clients.