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17

CUTTING-OFF

& GRINDING

WHEELS

TROUBLESHOOTING GRINDING WHEELS

Wheel does not grind

Cause

Solution

wheel too hard, wheelglazing

use softer wheel

Cause

Solution

not enough pressure

increase pressure

Cause

Solution

machine power too low

use machine with more power

Cause

Solution

loading and wheelglazing (non-ferrous)

use Flexovit Alu wheels which counteracts loading and wheelglazing

Excessive wheelwear

Cause

Solution

wheel too soft

use harder wheel

Cause

Solution

too much pressure

reduce pressure, let the wheel do the grinding

Cause

Solution

decrease of peripheral speed

use machine with more power, reduce pressure on the machine

Cause

Solution

too low peripheral speed

max. 80m/s is optimum speed

Crumbled wheel edge

Cause

Solution

grinding angle too flat

change angle to 30 - 40°

Cause

Solution

workpiece is moving

clamp the workpiece properly

Cause

Solution

too much pressure

reduce pressure, let the wheel do the grinding

Cracks on the bottom of the wheel

Cause

Solution

contact area too large

reduce contact area

Cause

Solution

too much pressure

reduce pressure, let the wheel do the grinding

Unbalance

Cause

Solution

dirty flanges

clean flanges

Cause

Solution

wheel mounting insecure

tighten flanges

Cause

Solution

flanges with different diameter

replace flanges