Tri Tool 301SP Tube Squaring - Manual (Page 10)

10
TRI TOOL INC.
92-0579 Rev. 130308
CAUTION:
CAUTION:
OPERATION
Select the tool bit required to machine the end configuration desired.
The use of dull tool bits or tool bits not manufactured by TRI TOOL Inc. may
result in poor performance and may constitute abuse of this machine and
therefore voids the TRI TOOL Inc. factory warranty.
General guidelines for selecting a tool bit. Selection of the tool bit should be based
on tubing material, tubing size, and how critical is it to have a near burr free end.
A standard entrance angle tool bit is recommended for carbon steel. These tool bits
also function well with some stainless steel applications where a near burr free end
is not a critical requirement.
A high entrance angle tool bit is recommended for most stainless steels. Generally
this is the most suitable edge geometry for about 90% of all the stainless steel
tubing applications.
An extra hook angle tool bit is recommended for stainless steels, which are very
soft. These stainless steels include materials like 316L, which have been bright
hydrogen annealed, vacuum annealed or annealed and Electro-polished. Electro-
polished stainless steel has a micro-thin surface, which is high in Cr. and Ni, which
makes it very soft, but tough and difficult to cut without a burr.
The M-42 tool bits are for use with the exotic alloys where the high heat resistance
is required to avoid burning the cutting edge of the tool bit. M-42 can improve the life
expectancy of the tool bit under some conditions on stainless steel. It should be
noted that M-42 tool bits are more brittle than the standard M-2 tool bits, therefore
there is a much greater risk of damaging the M-42 tool bit when installing the tubing
in the Tube Squaring Machine. Loss of tool bits from damaged edges may not off-
set the improved cutting life that those tool bits promised.
Some of the exotic alloys may require tool bits with both the extra hook angle as
well as the M-42 tool steel for heat resistance.
Insert the tool bit into the slot in the Cutting Head.
Ensure that the Model 301SP is disconnected from the power source before
installing a tool bit.