Dry ice cleaning is to make liquid CO2 into dry ice particles of certain specifications through a dry ice preparation machine (granulator), and use compressed air as the power source to spray dry ice particles onto the surface of the object to be cleaned at high speed. Dry ice particles can not only grind and impact the dirt surface, but also cool and embrittle the dirt at low temperature, thus reducing the adhesion of the dirt on the material surface. The dry ice particles enter the dirt cracks and rapidly vaporize and expand, forcing the cleaned objects to peel off the attachment.

This technology has the following characteristics:

1. The cleaning medium is non-toxic and harmless to human body; There is no medium residue and secondary pollution after cleaning.

2. Dry ice particles have low hardness, little damage to the matrix, and no secondary floating embroideries.

3. The cleaned surface does not need rust prevention treatment, which simplifies the process steps.

4. The cleaning medium is non-conductive, so it is possible to conduct online cleaning for power equipment and other equipment in operation.

5. It is suitable for precision models, precision bearings and other parts as well as electronic, circuit board and other products.

Dirt types suitable for dry ice cleaning include dust, oil stain, surface coating, carbon deposition, coking, surface residue, adhesive, ink, wax deposition, etc. Dry ice cleaning has played an important role in transportation, wind energy, casting, electronics, plastics, rubber, food equipment, aviation, automobile production and other fields.