Tri Tool 236B Single Point - Manual (Page 18)

18
TRI TOOL INC.
92-1333 : Rev. 110404
Use 200 surface inches per minute (5080 surface millimeters per minute) for:
Stainless steels in general when no coolant is allowed, all heavy-wall tube
and some chrome/molybdenum steels.
Use 250 surface inches per minute (6350 surface millimeters per minute) for:
Mild steels and some thin-wall stainless steels when coolants are permitted
and applied.
Use 300 surface inches per minute (7620 surface millimeters per minute) for:
Aluminum and some thin-wall mild steel and tube with coolants.
BASIC FEED RECOMMENDATION
Use very light feed for initial beveling or until a continuous cut is established.
This is very important for longer tool bit life when cutting through flame cut or
out of square pipe ends.
Use adequate feed, .003” (.08 mm) to .006” (.15 mm) per revolution thereafter, to
establish a continuous chip cut.
If the feed is too light, only light stringer chips will be removed.
If the feed is too heavy the drive will start to overload and the chip will start to
have a rough or torn appearance.
Stainless steel, which work hardens, must be worked with a heavy enough feed to
stay under the work hardened surface .003” (.08 mm) to .006” (.15 mm) feed. Never
allow the tool bit to burnish the surface.
Reduced feeds and speeds will normally minimize chatter problems.