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Abrasive Media

Walnut Shell

4.7 | 57 reviews

Walnut shell abrasive is a hard and fibrous substance formed from crushed walnut shells. It is the most frequent form of soft abrasive used in industry. Because of its high durability, the walnut shell is now commonly used to blast clean and polish soft metals, glass, fibreglass, wood, plastic, and

Material Walnut Shell abrasive
Specific Gravity 1.2 - 1.4
Shape Agular
walnut shell
In Stock Rs 65 - 70 /kg
Specifications

Walnut Shell technical details.

Review the key product specifications used for quotation and application planning.

Material
Walnut Shell abrasive
Specific Gravity
1.2 - 1.4
Shape
Agular
Hardness
3 - 4 Mohs
Solubility
0.5/1.0
Abrasive Grain Sizes
2 - 3mm
Brand
Spray Blast
Color
Light Brown
Country
India
Delivery Time
10-15 Days
Packaging Details
HDPE Woven Gunny Bags
Packaging Size
25 Kg / 50 Kg / 1 Ton
Transport Type
Land / Sea / Air Transport
Working View

See Walnut Shell in working view.

Watch how the machine performs in real blasting and surface preparation conditions.

Working Principle

How Walnut Shell works

Walnut shell abrasive is a hard and fibrous substance formed from crushed walnut shells. It is the most frequent form of soft abrasive used in industry. Because of its high durability, the walnut shell is now commonly used to blast clean and polish soft metals, glass, fibreglass, wood, plastic, and

  1. 1
    Choose Soft Media

    Walnut Shell is used where the base material must not be deeply cut.

  2. 2
    Charge Cabinet

    Organic or plastic media is loaded into a suction or pressure cabinet.

  3. 3
    Set Low Aggression

    Pressure and standoff are kept moderate to protect the substrate.

  4. 4
    Strip Coatings

    Media breaks down paint or carbon without warping soft metals or molds.

  5. 5
    Reclaim And Screen

    Usable media is recycled; dust and broken grains are discarded.

  6. 6
    Inspect Substrate

    The part is cleaned of residue and checked for damage-free stripping.

Product Details

Media we supply

Walnut shell abrasive is a hard and fibrous substance formed from crushed walnut shells. It is the most frequent form of soft abrasive used in industry. Because of its high durability, the walnut shell is now commonly used to blast clean and polish soft metals, glass, fibreglass, wood, plastic, and stone.

Walnut Shell is used to polish gems and jewellery in both tumbling and vibratory applications. Walnut Shell media can also be used to deburr and deflash moulding, casting, and electrical parts. Walnut Shell is ground to a variety of sizes, from coarse to super fine, providing you precise control over the desired finish. Walnut Shell, like other soft media, cleans and eliminates debris from surfaces without hurting the underlying substance.

walnut shell
More Details

Walnut shell Blasting Media

The hard fibrous substance generated from powdered or crushed walnut shells is known as walnut shell blasting media. Walnut shell blasting grit is a soft abrasive media that is exceptionally resilient, angular, and multi-faceted when used as a blasting media. To prevent inhalation health problems, walnut shell blasting grit is an excellent replacement for sand (free silica).

Cleaning with walnut shell blasting media is especially successful when the surface of the substrate behind its coat of paint, dirt, grease, scale, carbon, and so on must stay intact or otherwise unaffected. As a soft aggregate, walnut shell blasting grit can be used to remove foreign matter or coatings off surfaces without etching, scratching, or marring cleansed regions.

There are various advantages to using Walnut Shell media. It is non-toxic, environmentally friendly, and has no health or environmental risks. It protects gel coats, bases, and primers while removing paint topcoats. Walnut Shell Grit may clean surfaces without damaging or pitting the underlying material.

The Walnut shell media is also long-lasting, reusable, and biodegradable, reducing finishing operation cycle time. Because the Walnut shell in India is silica-free, it retains micro finishes and prevents silicosis.

When handled properly, walnut shell in India is softer than sand and retains the integrity of the underlying structure. Excellent for removing graffiti, cleaning engines, and soft metals, prepping metal for paint, and restoring historical antiques.

Walnut Shells for Sandblasting

Walnut shells can be used as a blasting media for sand blasting machine operation. This is because walnut shells are hard and durable enough to effectively remove surface coatings and debris, but are also softer than most other blasting media, making them less likely to damage the underlying surface. Walnut shells are also a renewable and environmentally friendly blasting media option, as they are biodegradable and do not produce hazardous waste or air pollution.

However, it is important to note that walnut shells may not be suitable for all types of sandblasting applications, and the size and shape of the walnut shell particles can impact the effectiveness of the blasting process.

Walnut Shells Features 

  • Sourced organically and naturally.
  • Soft Abrasiveness and etching are minimal.
  • Lightweight.
  • Walnut shell in India at reasonably priced.
  • Reusable, with limited breakdown.
  • Biodegradable.
walnut shell
Model Range

Types of Abrasive Media

Compare Walnut Shell with other models in Abrasive Media.

Specification Mild Steel Shot This model Walnut Shell Ceramic Beads
Product Mild Steel Shot Ceramic Beads
Size 0.3-2.5 mm
Hardness 40-50 HRC 3 - 4 Mohs
Density 7.85 g/cm3
Color Grey, Black Light Brown White
Brand Spray Blast Spray Blast Spray Blast
Country India India India
Delivery Time 7-10 Days 10-15 Days 7-10 Days
Packaging Size 25kg / 50kg/ 1 ton jumbo bag 25 Kg / 50 Kg / 1 Ton 25kg / 50kg/ 1 ton jumbo bag
Delivery Type Ship/Air/Land Ship/Air/Land
Price Range Rs 65/KG-100/KG Rs 65 - 70 /kg Rs 20-25/kg
Material Walnut Shell abrasive
Specific Gravity 1.2 - 1.4 3.85g/cm³
Shape Agular
Solubility 0.5/1.0
Abrasive Grain Sizes 2 - 3mm
Packaging Details HDPE Woven Gunny Bags
Transport Type Land / Sea / Air Transport
Grain Shape Spherical
Bulk Density 2300kg/m3
Hardness (HTC) 65
Melting Point approx. 2100ºC
Grain Size (μm) 63-850
Packaging Type Bag & Drums
Where It's Used

Applications

Typical applications for Walnut Shell across industrial blasting, coating, and surface preparation work.

Gentle Paint Strip

Walnut Shell removes coatings without gouging soft substrates.

Config: Low-to-moderate cabinet pressure
Enquire

Mould And Die Cleaning

Carbon and residue are blasted off tooling.

Config: Keep media dry and classified
Enquire

Aerospace Soft Strip

Plastic media protects thin skins where specified.

Config: Follow the process spec
Enquire

Engine Components

Carbon is cleaned from parts that cannot take grit.

Config: Mask precision fits
Enquire

Electronic Housings

Paint is stripped from thin aluminum boxes.

Config: Fine media, short dwell
Enquire

Wood And Composite

Selected organic media deflash or clean without deep cut.

Config: Test a coupon first
Enquire

Historic Restoration

Soft blast removes soils from delicate assemblies.

Config: Very low pressure
Enquire

Reclaim Cycles

Media is screened so dust does not dull the strip rate.

Config: Top up with new media
Enquire
Configuration Helper

Not sure which Walnut Shell configuration you need?

Answer a few questions and we will suggest a starting configuration for Walnut Shell — then confirm the exact specification with our team.

What substrate are you blasting?

What do you need the media for?

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FAQ

Common questions about Walnut Shell.

Clear answers on specification, usage, and what to expect before you request a quote.

What is walnut shell abrasive used for?
Walnut shell abrasive is used for cleaning and surface preparation in various industries, including aerospace, automotive, marine, and manufacturing. It is commonly used for removing paint, rust, corrosion, and other surface contaminants. It can also be used for deburring and polishing.
Can walnut shell abrasive be recycled?
Yes, walnut shell abrasive can be recycled and reused multiple times before it needs to be replaced. It can be cleaned and separated from debris using a screening process, and then reused for other applications.
How does walnut shell abrasive compare to other abrasive media?
A walnut shell abrasive is considered to be a gentle abrasive media that is ideal for removing surface contaminants without damaging the underlying material. It is less abrasive than traditional media such as sand or glass beads, making it an ideal choice for delicate materials like aluminum or fiberglass.
What is Walnut shell price?
Walnut shell price is Rs 65 - 70 /kg. Walnut shell price depends on the size, shape, and hardness of Walnut shell in India. The walnut shell price is low compared to others.
What is Walnut Shell used for?
Walnut Shell is used for blasting, cleaning, surface preparation, rust removal, finishing, or peening work depending on the material grade and application requirement.
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