Walnut shell blasting is used for stripping paint & coatings from cars, boats, buildings, furniture, fiberglass, steel and wood. The method can be employed as air blast or wheel blast equipment to propel walnut shell media.
Walnut shell blasting provides the aggressiveness to remove tough paints & coatings without damaging softer substrates since walnut shell media is a soft abrasive material. Also, walnut shell blasting makes “selective coating removal” possible. Hereby, the top coating can be stripped while leaving under-coatings original.
In addition, walnut shell blasting does not cause silicosis and therefore this method is an excellent alternative to sandblasting.
Why You Should Use Walnut Shell in Blasting?
Walnut Shell abrasive is a hard and fibrous product made from crushed walnut shells in accordance with International Trade Standard. It is the most common type of soft abrasive for industrial use. Walnut Shell has excellent durability, and is now widely used to blast clean and polish soft metals, glass, fiberglass, wood, plastic and stone.
Walnut Shell is used in both tumbling and vibratory applications for polishing gems and jewellery. It also works as a de-burring and de-flashing product for molding, casting and electrical parts.
Walnut Shell is ground to various sizes ranging from coarse to extra fine, allowing for a fine degree of control over the desired finish. Like other soft media, Walnut Shell cleans and removes matter from surfaces without damaging underlying material.
Laboratory experiments have indicated that all media compounds may be somewhat corrosive and leave an adherent scale if they are deposited on hot metal surfaces (i.e. at 1500°F). Field experience, however, has indicated that the chance of such media actually depositing on hot components is fortunately very remote. Walnut Shell abrasive can be reused many times which will be reducing costs.
Walnut Shell Blasting can be separated into two general areas due to the intended uses:
Cleaning & Deflashing
Cleaning & Deflashing with walnut shell media is used to remove grime, debris and grease from engines, valves, turbines, molds and tools. It can also clean plastics and metals without damaging surfaces since walnut shell media is a soft abrasive material. And all, walnut shells are used for “deflashing” that is also called “deburring” of plastic parts.
Besides, Walnut Shell media is used for polishing jewellery and precious stones. It is also good as a de-burring and de-flashing product for molding and casting.
Tumbling & Polishing
Walnut shell media can be used for cleaning and polishing metal parts in vibratory tumblers. It is usually treated with a polishing compound to enhance the result. When walnut shell media is mixed to a polishing compound, dirty metal parts are left clean and shiny.
Walnut shell polishing media is a hard and fibrous product made from crushed walnut shells in accordance with International Trade Standard. The walnut shell polishing medium is ground to various sizes from coarse to extra fine depending the application, allowing for a fine degree of control over the desired finish.Walnut shells are used in many polishing and/or deburring applications. Walnut shell media is used for polishing or cleaning fine metals, alloys, mechanical parts, shell cartridges, eye glass lens, rocks, stones, coral, ivory, beans, and seeds. Walnut shell is used as an polishing media similar to sand for polishing or deburring but without the negativities associated with other abrasive materials. Because walnut shell polishing is a gentle, non-corrosive environmentally friendly method of removing burrs, splinter, rusts, wets, edges and corners, without scratching, etching, pitting the substrate material / underlying surface or marring cleaned areas. When used as a polishing media, walnut shell grit is extremely durable, angular and multi-faceted, yet is considered a ‘soft polishing media’. Walnut shell polishing media is an excellent replacement for sand (free silica) to avoid inhalation health concerns.
Like other soft media, Walnut shell cleans and removes matter from surfaces without damaging underlying material. Jewelers use walnut shell media treated with rouge in both tumbling and vibratory applications for polishing gems and fine jewelry. When polishing the media size should be small enough to freely pass through openings or large enough to avoid lodging in openings or crevices.
WALNUT SHELL BLASTING IN INDUSTRIAL AREA
- – Offshore Industry
- – Automobile Industry
- – Aviation Industry
- – Pipe Industry
- – Marine / Ship Building and Repairing Industry
- – Power Generation