Master the dos and don’ts of grinding wheels. Follow these essential safety rules for handling, inspecting, and using abrasive wheels to prevent breakage and injury.
There are nine main types of grinding wheels, each with a unique shape for specific tasks like straight, cylinder, tapered, cup, dish, and saucer wheels.
Hybrid bond grinding wheels combine resin and metal bonds for superior cutting, longer life, and excellent form holding. They offer an aggressive yet cool cut.
Store grinding wheels in a dry, stable area away from sunlight and extreme temperatures. Use racks for large wheels and store thin discs flat to prevent warping.
To dress a grinding wheel, use a specialized tool like a diamond dresser for precision, a dressing stick for cleaning, or a star dresser for coarse work.
Improve surface finish in grinding by selecting a finer grit wheel, reducing workpiece speed, and using a light depth of cut for the final pass with a spark-out.
The main difference between a diamond and CBN grinding wheel is material application. Diamond wheels are for hard, non-ferrous materials like carbide and ceramic.
As a grinding wheel wears, its diameter shrinks, reducing surface speed and making it act softer. This causes faster breakdown, glazing, and poor surface finish.
A grinding wheel is worn out if it has cracks or chips, causes excessive vibration, or has been ground down to its minimum usable diameter. Timely replacement is vital.
Rough grinding rapidly removes large amounts of material, while precision grinding is a meticulous process used to achieve exact dimensions and a fine surface finish.
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