Walnut Shell

Walnut shells are a versatile abrasive media that is frequently used in abrasive sand blasting machine operation, tumbling, cleaning, polishing, filtration, cosmetics, and non-skid and filler applications. Crushed walnut shells are pulverized and divided into standard mesh sizes ranging from coarse to fine powders.

On submarines and aircraft carriers, walnut shell blasting is employed to remove the topcoat without destroying the expensive undercoats. Prior to the introduction of walnut shell blasting, thermal spray gun coatings were often removed down to the bare metal, necessitating the renewal of the undercoat, vinyl layer, and topcoat. This coating removal blasting procedure also enables selective thermal spray coating removal, which saves time and money.

Ground Walnut Shells are available in two grades: standard-grade English Walnut Shell (juglans regia) and filtration-grade Black Walnut Shell (juglans negra).

Walnut Shell Abrasive Media

Walnut shell media is an all-natural, biodegradable, and long-lasting substance with good strength properties. It has a specific gravity of 1.2-1.4, a hardness of 3.5 MOH, and a Rockwell hardness of 91.

Walnut shell is resistant to fermentation and operates well in a wide range of pH and temperature settings. They are recyclable and reclaimable, making them an ideal blast media for outdoor applications.

Walnut Shell Blasting Media

Wheel blast or air blast machinery is used in walnut shell blasting media to remove paints and coatings from buildings, cars, boats, furniture, fiberglass, steel, and other surfaces.

The aggressiveness required to remove hard paints and coatings without destroying substrates is provided by walnut shell blasting. The procedure also allows for selective coating removal, which allows for the removal of the top coating without harming the underlying coatings.

A variety of elements are involved in blast operations, including safety, sand blasting nozzle distance, media particle size, and p.s.i. Walnut shell blasting media does not produce silicosis and hence provides an excellent alternative to sandblasting.

Uses of Walnut Shell 

• Speed: Because walnut blasting is a dry process, there is no need for additional time-consuming drying treatments. This will help you achieve your manufacturing deadlines.
• Flexibility: Because walnut shells are naturally compatible, you may not need to buy various types of blasting media.
• Cost-Effectiveness: Walnut shells blasting media are a reusable blasting media that will maximize your investment's return.
• Organic walnut shells do not emit dangerous chemicals and do not require the use of any solvents or additives during the blasting process.
• Walnut shells are biodegradable and hence environmentally friendly. You can get rid of them without worrying about damaging the environment.