Tungsten Alloy Bar

Boring Bars and Grinding Quills

Chatter Free and Super Chatter Free are the standards for vibration-free machining and grinding. They're used when rigidity and minimal vibration are crucial. The high density of tungsten means it's an ideal material to make vibration-free boring bars.
Using Chatter Free means making heavier cuts, a longer tool life, and a better finish. Tool extensions of up to 9:1 are possible, depending on the diameter.
With Super Chatter Free, tool extensions up to 10:1 are possible, depending on the diameter. Tools run cooler because of the high thermal conductivity, and you can braze directly to material without affecting its physical properties.
These materials are often used in place of tungsten carbide boring bars because they have a higher density, are readily machinable, and are less prone to chipping and breakage. In addition, both material and finishing costs are less.

Chatter Free

An Alternative to Tungsten Carbide Boring Bars & Grinding Quills.
It is used for end mill extensions, arbors, tool holders, grinding quills, and boring bars. When using Chatter Free material, you can make heavier cuts at increased speeds. Longer tool extensions are possible with ratios of up to 9:1, depending on the diameter.
Because of the very minimal chatter and high thermal conductivity—three times that of steel!—tools run cooler, adding to tool life and less down time.
Using Chatter Free material results in a better finish and added tool life in high RPM machining, when diamond or ceramic inserts are used. Because of its very high density, it has a rotating inertia effect in grinding and milling operations, which results in more accurate finishing.
Chatter Free material does not anneal during brazing, so carbide or tool holders and extensions can be brazed directly without affecting physical properties.
Chatter Free material is often used in place of tungsten carbide boring bars because:

• It has a higher density
• It's readily machinable
• It's less prone to chipping and breakage
• Both material and finishing costs are less

Chatter Free is relatively non-corrosive, and plating is normally not required in tooling applications. However, if plating is necessary, standard plating procedures for nickel and chromium plating are used. A copper flash is sometimes required for better adherence.

Super Chatter Free

Superior Performance to Tungsten Carbide Boring Bars and Grinding Quills
Super Chatter Free™ is a tungsten-based material developed as an alternative to tungsten carbide boring bars and grinding quills. It replaces tungsten carbide in most boring and grinding applications and in many instances, provides superior performance.
Advantages of Super Chatter Free:

• Machines similarly to gray cast iron, thus reducing finishing and machining costs
• Not subject to the same chipping and breakage as tungsten carbide
• Stiffness and rigidity is close to that of tungsten carbide
• Extension ratios of up to 10:1 are possible, depending on diameter
• Higher density than tungsten carbide—17.7 gm/cc, compared with 15 gm/cc

Chinatungsten can not only offer the tungsten alloy bar with the blank form, but can also machined for customer.
As it is high density with small capacity, high temperature resistance, reduction in press down-time, minimal extruded metal pick-up, high impact resistance and crack resistance, wonderful shock resistance, good corrosion resistance, etc. Therefore, tungsten alloy products are increasingly welcome by public.
For more details, you should contact by telephone 86 529 5129696, or email to sales@chinatungsten.com. Any enquiry or questions will be warmly welcomed.