How to Choose the Right Blast Nozzle for Abrasive Blasting

A blast nozzle is a device used to propel abrasive particles at a surface at high velocity to smooth a rough surface, roughen a smooth surface, shape a surface, or remove surface contaminants. Blast nozzles are used in a variety of applications across many industries.

Blast nozzles are typically made of steel, alumina, tungsten carbide, silicon nitride, silicon carbide, boron carbide, and ROCTEC™. The nozzle material is important because it affects the durability and wear resistance of the nozzle. Tungsten carbide nozzles are the most common type and are a good choice for general-purpose blasting.  Alumina nozzles are lower-priced than carbide nozzles but they are not as durable. 

The type of abrasive you use will also affect impact the nozzle service lifesize you need. Finer, harder, and sharper abrasives , such as sand, require smaller nozzles than coarser abrasives result in shorter nozzle service life, such as steel shot.

• Abrasive blasting respirator: This type of respirator covers the head, neck, and shoulders to protect the wearer from rebounding abrasive and dust. It must be NIOSH-certified for abrasive blasting.
• Blast suit: A blast suit is a full-body suit that protects the wearer from abrasive material, dust, and other hazards. It should be made of a durable material, such as nylon or Kevlar.
• Gloves: Gloves should be made of a durable material that can protect the wearer from abrasive material, dust, and chemicals.
• Boots: Boots should be made of a durable material that can protect the wearer from abrasive material, dust, and chemicals. They should also be slip-resistant.
• Hard hat: A hard hat protects the wearer from head injuries.
• Eye protection: Eye protection, such as safety glasses or a goggles, protects the wearer from flying debris and dust.

In addition to the essential PPE listed above, workers may also need to wear other PPE depending on the specific abrasive blasting operation being performed. For example, workers who are abrasive blasting with materials that contain lead or other hazardous materials may need to wear additional respiratory protection and clothing.

It is important to note that all PPE must be properly fitted and maintained in order to be effective. Workers should be trained on how to properly use and maintain their PPE.