Pure Tungsten & Tungsten Alloys
Turning
Tools |
Carbide H(2) |
Clearance angle |
9° |
Back Rake |
27° |
Side Rake |
0° |
Cutting Speed |
132 ft per minute |
Nose Angle |
90° |
Nose Radius |
0° |
Grinding
Use aluminum oxide or silicon carbide wheels with medium hardness.
Wheel Type |
silicon carbide; hardness j to l ; gram size 100-120 |
Speed |
12 ft per second |
Milling
When milling Tungsten, the following is recommended
Cutting speed |
73 feet per minute |
clearance angle |
8° |
side rake |
10° |
Forming
When spinning, bending or stamping note the following
Tooling |
Carbide |
Temperature |
1000° - 1500° F |
Drilling
Use high speed steel surface treated drills with plain points. Increased clearance angles and automatic feeding are often used to avoid binding. Carbide drills will give better tool life. A Chlorinated oil or a tapping compound is recommended.
Tapping
Use high speed steel or carbide, two flute plug spiral point taps. Chlorinated oil or a tapping compound is recommended.
Cutting
When sawing use a bi-metal coarse blade at high speeds, or a high speed steel coarse blade at low speeds. Coolant can be used. Material can also be cut using high
speed abrasive cutoff wheels.
Joining
Methods used are copper brazing, diffusion bonding, silver soldering and shrink fitting.