What Is Dry Ice Cleaning?
Dry ice cleaning is a technologically advanced, environmentally responsible surface preparation and cleaning method for all industries. Here at Cryogenesis, our dry ice cleaning services are ISO-certified, suitable for a range of industries and applications, and provided in line with NEBOSH health and safety management.
The process of cleaning using dry ice has been perfected by our team here at Cryogenesis to provide the best results, and follows these steps:
• Dry ice (solid CO2 at - 78.5°C) is formed into 3mm rice like pellets (Drice®).
• These are ground into tiny particles the size of sugar crystals.
• The particles are accelerated to supersonic speeds via a blasting unit to the surface to be cleaned.
• Upon impact, the dry ice immediately turns into vapour expanding up to 540 times its volume.
• The energy produced during this conversion is chiefly responsible for the actual cleaning process.
• The vapour disappears, leaving only the removed contaminant itself for disposal, unlike conventional blast cleaning methods. Dry Ice cleaning is non-abrasive to the impacted surface.
How It Works
Kinetic energy is transferred from the dry ice media to the surface, chipping away at the contaminant and is then converted to heat producing sublimation - the process of turning from solid to vapour.
In some situations, the contaminant and substrate are rapidly cooled by the dry ice cleaning stream. The two materials can often contract at different rates and so weakening the bond between the two materials. This is particularly noticeable where hard resins have been applied to metallic surfaces.
As the media warms up, it is converted directly back into carbon dioxide vapour, expanding rapidly. This effect (sublimation) forces the contaminant from the underlying surface.