Characterization of CO₂ Snow Generation to Increase the Blasting Performance

Abstract:

Chemical cleaning methods are under strict restrictions due to the legislator, as they are often harmful to environment and health. Therefore, environmentally neutral cleaning methods will gain importance in the future. Alternative cleaning processes like blasting with solid carbon dioxide can substitute such harmful chemicals without residues of blasting media. CO₂ snow blasting has a minor technical complexity with a possible high degree of automation, but is limited in its cleaning performance. Basic knowledge of CO₂ formation must be gained in order to increase the cleaning performance. The basic dependencies of ambient pressure and temperature as well as the possibility of their manipulation regarding the produced CO₂ particles were investigated. The investigations were conducted using design of experiments and lead to a model describing the CO₂ snow formation and its properties. The goal was to manipulate the properties of the generated CO₂ snow in order to optimise the technology regarding the cleaning task.

• Periodical: Applied Mechanics and Materials (Volume 794)
• Pages: 255-261
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.794.255
• Online since: October 2015
• Authors: Michael Kretzschmar*, El Mustapha Baira, Eckart Uhlmann
• Keywords: CO₂ Snow Blasting, Cryogenic Machining, Optimization

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