News

Walnut shell abrasive polishing uses and introduction

Walnut shell abrasive is a natural, environmentally friendly, high-performance polishing medium. Due to its unique physical and chemical properties, it has been widely used in various industrial polishing processes. Walnut shells are hard and tough. After screening, crushing and processing, the abrasives made not only retain a certain grinding force, but also have the advantages of being soft and not damaging the surface of the substrate. Therefore, it has become a very popular natural material in the precision polishing industry.

In polishing applications, the most important feature of walnut shell abrasives is that it will not cause scratches or wear on the material itself when removing surface dirt or flaws. It is suitable for surface treatment of various materials such as metal, plastic, glass, wood, etc., especially for parts with extremely high surface quality requirements, such as aviation parts, precision instruments, auto parts, electronic components, etc.

Specifically, walnut shell abrasives are particularly prominent in the following polishing applications:

• Metal surface cleaning and polishing In the field of mechanical manufacturing and maintenance, walnut shell abrasives are often used for cleaning and slight polishing of metal surfaces such as aluminum alloys, stainless steel, and brass. Walnut shells can effectively remove oil stains, oxide layers, tiny rust spots and carbides after heat treatment without changing the size and finish of metal workpieces. They are especially suitable for surface repair of aerospace and automotive engine parts.
  
  
• Polishing of molds and precision parts In mold manufacturing and high-precision parts production, there are extremely high requirements for surface finish and dimensional stability. Walnut shell abrasives can be used as flexible polishing media to gently remove tiny burrs and processing residues on the surface, while avoiding the scratch problems that may be caused by traditional hard abrasives, greatly improving the appearance and service life of the product.
  
  
• Surface polishing of plastic and resin products Plastic products are prone to tiny surface defects or mold lines during the production process. Walnut shell abrasives can be used for soft polishing without damaging the appearance of the product, improving the surface gloss and feel of plastic parts, and are widely used in home appliance housings, automotive interior parts and other fields.
  
  
• Fine polishing of wood and artworks Walnut shell abrasives are also widely used in high-end furniture manufacturing and sculpture artwork restoration. Compared with traditional sandpaper, walnut shell polishing is softer and can effectively preserve the original natural texture of wood and the fine details of artworks, making the finished surface more delicate and smooth, and environmentally friendly and pollution-free.
  
  

Walnut shell abrasives can be used in a variety of ways during the polishing process. They can be used in conjunction with dry sandblasting machines, drum polishers, vibration finishing machines and other equipment to achieve different effects of coarse grinding, fine grinding and even mirror polishing according to different particle size specifications. Generally, the smaller the particle size, the finer the polished surface.

In addition, walnut shell abrasives have the natural properties of being degradable, non-toxic and pollution-free. After use, no heavy metal residues or harmful waste gas will be produced, which meets the high standards of today’s manufacturing industry for environmental protection and sustainable development. Therefore, walnut shell abrasives are becoming more and more popular around the world, especially in areas with strict environmental regulations.

In summary, walnut shell abrasives, as an efficient, environmentally friendly and gentle polishing material, have shown extensive and unique application value in industrial manufacturing, precision machining, art restoration and other fields. With the continuous advancement of the concept of green manufacturing, walnut shell abrasives will play an increasingly important role in future polishing processes.