Thermal Spray Dust Collection & Ventilation
Because Thermal Spray Dust Carries Dangerous Risks That Can Be Controlled
Workers involved in thermal spray processes face serious risks. This process—also known as metalizing, flame spraying, metal spraying and hardfacing—involves melting metal and spraying it onto a surface to form a coating. This is useful for adding corrosion-resistance to surfaces, building up worn parts and other applications. Any situation that includes extreme heat and melted metal requires precautions, but workers performing thermal spray are often not protected to the degree that workers in other dangerous fields are, such as welders.
Thermal spray is often conducted in enclosed spaces on job locations that lack proper ventilation and dust collection. The intense heat applied to the metallic source material—whether through oxyfuel, plasma arc or other methods—breaks the metal up into tiny particles that can be smaller than one micron in diameter. The smaller the particle, the more dangerous the dust or fumes. Thermal spray is particularly dangerous to workers because every particle is made airborne. An effective method of thermal spray collection is crucial for meeting regulations and ensuring worker safety.