The carbide Burrs are primarily used in deburring, that is removing burrs, sharp edges, and excessive materials in addition to grinding, shaping, and cutting of materials.
In this article, we will be looking at facts about the tungsten carbide burrs that you should know and how to use them.
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Tungsten carbide burrs is used in a wide range of materials including all types of wood, plastics including the Glass fiber Reinforced Plastic (GRP), carbon fiber reinforced plastic (CRP), fiberglass, acrylics and metals including cast iron, aluminum, and steel. Carbide burrs are ideal for soft metals such as silver, platinum, and gold as they have a long duration with no breaking or chipping. Other metals include titanium, nickel, cobalt, zinc, and more.
Carbide burrs are typically used in air tools such as pneumatic rotary tools, die grinders and high-speed engravers. Others include the hobby rotary tools, flexible shafts, pendant drills, and micro motors.
Note: A handpiece without wobble should always be used.
Generally, the carbide burrs find application in a wide range of industries amongst which include the metal smith, dental, automotive, aerospace industries and more. In these industries they are typically used for sculpting, cylinder head porting, grinding, deburring, casting, chamfering, welding, jewelry making, wood carving, model engineering, tool making, and other metalwork.
With the right-handed spiral flute, the Single cut carbide burrs, also referred to as the one flute, will remove material quickly with a smooth finish. They are basically used with ferrous metals, cast iron, copper, hardened steel, and stainless steel. They are suitable for deburring, milling, and heavy stock removal.
On the other hand, the double cut carbide burrs sometimes referred to as cross cut or diamond cut due to the 2 flutes cut across each other tend to be used on all non-metal materials such as wood and plastics, ferrous and non-ferrous metals, soft steel and aluminum. The double cut carbide burrs produce smaller chips as they cut away the material hence leaves a smoother finish than the single cut.
The cut or profile you are looking to achieve will help you to make your choice of what shape of carbide burr to use. Here is a list of the various carbide burr shapes:
· Carbide Ball Burrs
· Carbide Inverted Cone Burrs
· Carbide Tree Burrs
· Carbide Pointed Cone & Ball Nose or Carbide Round Nose Burrs
· Oval Burrs
· Cylinder Burrs. End/Ball nose/ Round Nose Cut
· Flame Burrs
· Countersink Burrs
· Oblate Spheroid
Little pressure should be applied. This is to prevent chipping away from the cutting edges and reduction in the life of the burr.
The contour is produced and the material to be worked on determines the speed at which you use your carbide burr set in your rotary tool. However, the burr should be started slowly while increasing the speed as you progress. The speed should not exceed 35,000 RPM.