MACHINING & FINISHING
HIGH-DENSITY TUNGSTEN BASED METALS
Machining
is similar to machining gray cast iron.
Coolants are optional, but carbide tools
are recommended in most cases.
TURNING & BORING:
Roughing-use C-2 Carbide with cutting
depth of .030”-to .1 25 and .006” -
.015 feed, at 200 to 300 SFM. Finishing-
.010 to .015 cutting depth and .004-.010
feed at 250-400 SFM.
DRILLNG:
Use high speed steel surface treated
drills with plain points. Increased clearance
angles and automatic feeds are often
used to avoid binding and seizing. Carbide
drills will give better tool life. Chlorinated
oil is sometimes used as a coolant.
TAPPING:
Use High-speed or carbide, two flute
plug spiral point taps. Use chlorinated
oil or taping compound is recommended.
GRINDING:
Use aluminum oxide or silicon carbide
wheels of medium hardness.
SAWING
- Cutting: When sawing, use a bi-metal
coarse blade at high speeds, or a high-speed
coarse blade at low speed. Coolant can
be used. Material can be cut using high-speed
cutoff wheels.
MILLING:
Use M-2 high-speed steel for light cuts
and M-42 high-speed steel for deep cuts.
Carbide cutter inserts will extend tool
life. We recommend when using carbide,
feeds of .007-.01 5 per tooth at speeds
of 200-400 SFM for roughing, and when
finished, feeds of .003-.01 0” per
tooth 300-700 SFM. Our high-density tungsten
alloys are not heat treatable; however,
stress relieving is sometimes done on
machined parts. We suggest heating 600F
in air for 2 hours and air cool in air
or heating in a protective atmosphere
at 900F for 30 minutes.
The
material’s characteristics and
its low thermal expansion allow very
close tolerances and fine finishes.
New
Alloy
Chip
Resistant Tungsten: 93% W Bal. Ni, Fe & Mo.
This
alloy replaces Tungsten Carbide in most
boring & grinding operations.
Available
forms in stock: -
Round Bar, Flat Bar, Square Bar, Sheet & Wire
Also
available: Commercially Pure Tungsten,
Copper Tungsten & Silver Tungsten
Machining
Available for Tungsten Alloys:
“State
of the art” machine shop can produce
to near net/net, and finished parts as
per your drawings. |
