| 摘要 |
The present invention provides a blast cleaning method with cleaning performance adjustable by changing the hardness, shape and size of solid carbon dioxide to be used as a shot material, and a method and a device for producing solid carbon dioxide to be used for the blast cleaning method. The blast cleaning method includes the steps of: forming plate-shaped solid carbon dioxide, crushed pieces of which are used as a shot material (Step S10), transporting the formed plate-shaped solid carbon dioxide to a site of work (Step S20), crushing the plate-shaped carbon dioxide at the site of work, etc. (Step S30), putting the crushed pieces into a cleaning device (blasting machine) (Step S40), and cleaning an object to be cleaned by blowing the crushed pieces to the object to be cleaned (Step S50).
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