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Coolant:
Should be used whenever possible. It extends wheel life by as much as 50% and
keeps wheels clean and sharp.
1) Use half as much down feed when
grinding dry with resin bond wheels.
2) Never use metal bond wheels dry.
Caution: Heavy cuts, especially when grinding dry,
may overheat and permanently damage the diamond section of your wheel.
Dressing:
Keeps your wheel clean, sharp, and fast cutting.
1) Use aluminum oxide
dressing sticks for resin bond wheels.
2) Use silicon carbide
dressing sticks for metal and vitrified bond wheels.
3) Wet the dressing stick and
apply it to the diamond wheel face.
4) At first, there will be
back pressure as you hand feed. However, once the stick is
consumed as fast as you feed
it, the wheel is conditioned and ready to use.
Truing:
Super-abrasive wheels must be trued to each machine for precision
grinding.
Manually center your wheel by placing a wooden block at the point of
farthest run out and gently tap wheel toward center. Choose from
one of the below methods to continue:
Mild steel block method:
1) Take a piece of EN9 steel
approximately 6" x 3" on a surface grinder and run the wheel
at 5,000 SPFM, the table at
100
FPM using a depth of .001" per pass and a .050" - .100"
cross-feed.
Friction of brake dresser method (Recommended method up to
8" diameter):
1) Use a conventional wheel to true
the silicon carbide dressing wheel. Place the dressing wheel at a
15°« angle to
the
super abrasive wheel.
2) Start the dressing wheel
spinning by using a pencil, then down feed .001" per pass until the
wheel is trued.
Power Dressing Method (perform wet, if possible):
1) Run a 120 grit silicon carbide
conventional grinding wheel at 5,500 to 6,500 SFPM and the
super-abrasive wheel
at 100 to
300 SFPM.
2) Pass the conventional wheel at 5
- 20 in./min/ and in-feed .001" - .003" per traverse. Continue
until super-abrasive
wheel is
trued.
Normal Operating Speeds:
Resin bond: 4,000 to 6,500 SFPM
Metal bond: 4,000 to 6,000 SFPM |
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