Carbon Dioxide Snow Cleaning Applications

Sherman, Robert

doi:10.1016/b978-0-12-815577-6.00003-7

Cited by 4 publications

(2 citation statements)

References 37 publications

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“…However, condensation can usually be avoided by using short cleaning pulses, a tailored cleaning strategy, and by introducing a second gas (e.g. nitrogen purging) that displaces the ambient air [53].…”

Section: Monitoring During the Measurement Protection During The Meas...mentioning

confidence: 99%

Integration of an isotropic microprobe and a microenvironment into a conventional CMM

Metz

Jantzen

Wessel

et al. 2019

Meas. Sci. Technol.

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This paper describes the experimental verification of the novel IMT-PTB microprobe combined with a uniquely designed microenvironment. The microprobe consists of three silicon-based parallelograms stacked orthogonally, which leads to high isotropy. The probe tip deflections are detected in 3D with the help of piezoresistors placed in the parallelograms. The microenvironment facilitates and improves the measurement of workpieces with sub-millimeter features. The new microprobe and the microenvironment were integrated into a commercial coordinate measuring machine (CMM). To evaluate the microprobe performance, PTB produced and calibrated three reference objects: a cube, a sphere, and a microgear measurement standard. The differences between the calibration values and the measurement results obtained by the microprobe were in the sub-micrometer range. Furthermore, the microprobe was compared with the standard probing system of the gear measuring machine by measuring the reference objects with identical parameters. The results show the excellent performance of the micro probing system, thereby extending the capability of the CMM for high-precision measurements of complex workpieces at the microscale.

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Section: Monitoring During the Measurement Protection During The Meas...mentioning

confidence: 99%

Integration of an isotropic microprobe and a microenvironment into a conventional CMM

Metz

Jantzen

Wessel

et al. 2019

Meas. Sci. Technol.

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“…Particle detachment is caused by drag force from the highspeed gas flow, enhanced by collision force of fine dry ice particles formed in jet by expansion of liquid CO 2 or large CO 2 particles mixed into the air flow. Most all of these techniques primarily developed for specific needs of the aerospace and micro-electronics industries are now used in many other applications [21]. Dry ice snow and dry ice blasting have previously been tested in cleaning of some historical artefacts and art objects, particularly to evaluate certain positive characteristics such as the fast and non-aggressive cleaning of some materials, and the ease of waste removal.…”

Section: Introductionmentioning

confidence: 99%

Carbon dioxide snow cleaning of paper

et al. 2021

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The cleaning of particles from smooth and rough paper surfaces using a high-speed CO2 snow jet was investigated. The measurements included characterization of the jet properties, determination of the cleaning efficiency, and evaluation of any possible adverse effects. The method was compared with nitrogen jet cleaning and dry cleaning by commercial materials. The results showed that the CO2 snow jet is able to effectively remove particles from the paper surface and did not cause any observable degradation. The CO2 snow jet cleaning compared with the mechanical dry cleaning showed similar effectiveness without any adverse effects on the paper surface. It was proved that the CO2 snow technique is a suitable method for cleaning common types of paper materials.

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Evaluation of novel cleaning systems on mock-ups of unvarnished oil paint and chalk-glue ground within the Munch Aula Paintings Project

et al. 2021

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Low-risk removal of embedded surface soiling on delicate heritage objects can require novel alternatives to traditional cleaning systems. Edvard Munch’s monumental Aula paintings (1911–16) have a long history of exposure to atmospheric pollution and cleaning campaigns that have compromised the appearance and the condition of these important artworks. Soiling removal from porous and water-sensitive, unvarnished oil paintings continues to be a major conservation challenge. This paper presents the approach and results of research into the effect and efficiency of three novel systems used for soiling removal: soft particle blasting, CO2-snow blasting, and Nanorestore Gel® Dry and Peggy series hydrogels. Cleaning tests were performed on accelerated-aged and artificially soiled mock-ups consisting of unvarnished oil paint and chalk-glue grounds. Visual and analytical assessment (magnification using a light microscope and scanning electron microscope, as well as colour- and gloss measurement) was carried out before and after mock-up cleaning tests and the results were compared to those obtained using the dry polyurethane sponges employed in the most recent Aula surface cleaning campaign (2009–11). Although the results varied, the Nanorestore Gel® series proved promising with respect to improved soiling removal efficiency, and reduced pigment loss for the water-sensitive surfaces evaluated, compared to dry sponges.

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Carbon Dioxide Snow Cleaning Applications

Cited by 4 publications

References 37 publications

Integration of an isotropic microprobe and a microenvironment into a conventional CMM

Integration of an isotropic microprobe and a microenvironment into a conventional CMM

Carbon dioxide snow cleaning of paper

Evaluation of novel cleaning systems on mock-ups of unvarnished oil paint and chalk-glue ground within the Munch Aula Paintings Project

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