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What Is A Zirconia Flap Disc Used For?

What Is A Zirconia Flap Disc Used For


A flap disc, which should not be confused with a flap wheel, is an abrasive disc made for use with angle grinders and die grinders. The backing plate, which is frequently made of fiberglass or plastic and has either an open center hole, a screw-on-screw-off hub, or a rapid change attachment, is made up of overlapping coated abrasive flaps that are attached radially.

Because the layers overlap, a new abrasive sheet is always available to continue working without switching out instruments when one layer becomes worn down. Flap discs can do a multitude of tasks that would otherwise need rotating between grinding wheels and fiber discs.

These discs can be found in non-woven surface conditioning material, interleaf, and felt (non-abrasive) variants in addition to being commonly constructed with sanding sheets covered with aluminum oxide, zirconia, silicon carbide, or ceramic abrasive grains. Zirconia flap discs are the most popular and are used for one-step grinding and polishing. They are often offered in 40, 60, 80, or 120 grit, with the operator choosing the appropriate one for their material or project objective.


  • Modest or conservative expense. 
  • Durable.
  • Multi-reason.
  • Similar to aluminum in that it is kinder on fragile metals.
  • Fewer vibrations than the wheels' hammering. 
  • Expulsion proceeds at a predictable rate. 
  • Lightweight.


With a single-use tool, flap discs offer a productive and affordable alternative for grinding, blending, and finishing. They are a common tool among welders and metal craftsmen, but they can also be used on other surfaces. Making the appropriate decision will allow you to save a lot of time and work.


  • Metal fabrication uses quick welding and stock removal.
  • a weld being blended.
  • Deflashing.
  • metal surface finishing or blending.
  • steel and stainless steel deburring.
  • removal of corrosion and paint.
  • wood shape and sanding.
  • concrete edge work and polishing.
  • (Specific CDs) buffing and gleaming.
  • Chamfering an edge.


Zirconia Flap Disc is an excellent choice for high-pressure granulating and machining applications because it is a high-hotness obstruction device and significantly more grounded than aluminum oxide abrasives. Steel manufacturing shops frequently use zirconia flap discs, which operate best in the 24 to 120 coarseness range. 

Aluminum oxide and zirconium dioxide are combined to form zirconium, also known as zirconia alumina. It is most frequently used in metal fabrication workplaces since it is a great option for eliminating welds and blending hard metals like titanium, carbon steel, and stainless steel.

Zirconium works well under more pressure and maintains a constant cut rate and surface polish for the course of the disc's life. Aluminum oxide will not last as long or perform as well as zirconium, particularly when grinding aggressively.

Despite being harder than aluminum oxide, 220 grit zirconia flap discs may have trouble crushing plant scale, yet they really perform excellently on the following:

  • Tempered steel.
  • Apparatus steel.
  • Nickel compound.
  • Aluminum.
  • Titanium.
  • Cast iron.
  • Carbon Steel.
  • Edges, rotors, and welds.

Zirconium is produced by bucket projecting and is often available in cornmeal that is coarser and up to 120. It is much more grounded than aluminum oxide and has a coarse grain with a strong hotness opposition. Zirconia abrasives typically come in a variety of colors, ranging from mild blues to vibrant greens. For high-pressure pounding and machining applications, zirconia is a superb choice. Sanding demands more effort. For harder surfaces, the belts and sanding plates will work better, although they are not very good at cleaning.

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