Machining for Tungsten Alloy Shielding

High-density tungsten alloy shielding is extremely strong and durable (typical hardness ranges from 24-32 RC), yet easy to work with. (They machine much like gray cast iron.) Tungsten alloy’s low-thermal expansion rate and resistance to breakage and chipping allow you to achieve very close tolerances and hold fine finishes.

There are some main machining technologies for tungsten alloy shielding:

• Turning: Positive rake tooling is suggested.  Triangle inserts TPG432 or TPG431 grade 883.
• Drilling: Carbide tooling is suggested. Increased clearance angles and automatic feeds are often used to avoid binding and seizing. Carbide drills will give a better tool life.
• Milling: Premium uncoated end mills with a regular spiral such as SGS. Insert cutters; use square multi-edge or single edge cutters, such as KC730. Also can use positive rake octagon cutters, such as Seco grade 883.
• Sawing or Cutting: When sawing, use a bi-metal blade; blade pitch should be relative to the thickness of the material. Material can also be cut using high-speed abrasive cutoff wheels.
• Stress Relieving: Stress relieving can be accomplished on machined parts. We suggest heating at 600°F in air for two hours and cool in air or in a protective atmosphere at 900°F for 30 minutes.

 

  Tungsten Alloy Manufacturer & Supplier: Chinatungsten Online- http://www.tungsten-alloy.com
  Tel.: 86 592 5129696; Fax: 86 592 5129797
  Email:  sales@chinatungsten.com
  Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
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