Dry ice blasting is an effective technique for removing certain types of contaminants, but its effectiveness on copper verdigris depends on several factors.
Dry ice blasting verdigris on copper: what factors should you consider
- Thickness of the verdigris layer: if the layer is thin between 100 microns et 1 mm, cryogenic cleaning can be sufficient to eliminate it thanks to the effect of thermal shock which weakens the oxidation layer of the copper. However, if the layer is thick, you will likely need to consider other complementary methods.
- Accessibility of the piping: dry ice blasting requires direct access to the surface to be treated. If the piping is difficult to access, this method can be complicated to implement.
- Condition of the piping: if the piping is already weakened in terms of corrosion, dry ice projection, beyond 3 bars, could damage it further. In this case, it is preferable to opt for a gentler method (see below).
Alternatives to dry ice blasting for copper oxidation
- Mechanical methods: Brushing, sanding or soda blasting can be effective for removing verdigris, but be careful not to damage the copper.
- Chemical solutions: certain specific products can dissolve verdigris, but they must be used with caution and respecting safety instructions.
- Natural methods: mixtures based on white vinegar, lemon, or baking soda can be effective on thin layers of verdigris.
- Non-contact method: le laser stripping and in particular the use of a CL laser from the Cryoblaster range is more suitable in this case. Surface preservation is total and will allow you to restore objects made of copper
Applications of dry ice blasting on copper verdigris:
- Monuments and statues: Restoration of the original brilliance of copper artworks.
- Historic buildings: Cleaning of copper roofs, gutters and ornaments.
- Art objects: Renovation of copper collection pieces.
- Industry: Decontamination of copper equipment in sensitive environments. See video on food processing application
- Cultural heritage: Preservation of copper cultural heritage.
This ecological and non-abrasive technique restores life to the most tarnished pieces, effortlessly eliminating layers of verdigris accumulated over time. But don't forget, Cryoblaster.com is able to provide you with other stripping solutions, if dry ice blasting on verdigris on copper is not the best method...
Recommendation:
It is recommended to consult a dry ice blasting professional or a specialist in metal treatment to assess the situation and determine the most suitable method for removing verdigris from your copper piping.
Contact us for more information about our dry ice blasting, air abrasive blasting and laser stripping solutions, at 04 81 61 02 75 or by filling out the form on the page Contact.
