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ABRASIVES 101

COATED ABRASIVES

We know how important it is for you to obtain the best finishes in all your jobs. That’s why we recognize the importance of being able to count on the right selection of abrasives that will guarantee longer life and improved production times, while avoiding rework and large material waste.

For that reason, as sandpaper and coated abrasives experts, at FANDELI we always seek to guide you in the selection and best practices of abrasive products use.

FANDELI products are made up of three basic elements:

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Backing

This can be flexible, semi-rigid or rigid depending on the material used as the backing. The materials used by FANDELI include paper, cloth, vulcanized fiber, plastic films, and combinations of cloth and paper.

Layer of abrasive grains (mineral)

Each type of abrasive grit has unique properties. The selection of the best grits requires close attention to the type of material and its performance in real working conditions.

The types of abrasives used in order of hardness are Ceramic Alumina, Silicon Carbide, Zirconium Alumina, Aluminum Oxide and Emery.

Adhesive Coating

Adhesive that keeps mineral selection and backing fixed.

The most common forms of coated abrasives are

Sheets, Discs, Rolls, Bands Belts, flap wheels, specialties and nonwovens non-wovens.

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SILICON CARBIDE

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ALUMINA ZIRCONIA

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WHITE ALUMINUM OXIDE

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PREMIUM ALUMINUM OXIDE

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BROWN ALUMINUN OXIDE

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EMERY

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CERAMIC

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PAPER

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CLOTH

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PAPER AND CLOTH COMBINATIONS

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VULCANIZED FIBER

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PLASTIC FILM

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SHEETS

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VULCANIZED FIBER DISC

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ROLLS

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SANDING DISCS

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BELTS

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DISCS

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WHEELS

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ESPECIALTIES

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SOLID ABRASIVES

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CLASSIFICATION STANDARDS

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FEPA graduation is recommended for surface preparation and JIS graduations for finishing processes

Abrasive graduation systems

 

The size of the abrasive grits is one of the most important factors in selecting a product. Abrasives standards are defined by three different graduation standards: ANSI (American National Standard Institute), FEPA (Federation of European Producers of Abrasives) and JIS (Japanese International Standard).

The following table indicates and compares the average grit size in microns at each graduation standard. A simplified graduation system is included, as well as the type of operations recommended for each grade.

This graph shows the five basic types of operations with their corresponding rating:

GRADES

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