Paint Removal from Wood and Mineral Substrates

Salt Bath Method. The object from which the paint is to be removed is immersed in a salt melt heated to 300-500 C. The short time required for paint removal (30-120 s) is the result of the spontaneous heat transfer and high oxidation potential of the salt melt (e.g., alkali nitrates). 

High-Pressure Removal with Water. Paint can be removed from a metallic substrate (e.g., grids and skids) by the high kinetic energy of a high-pressure (70 100 MPa) water Jet. 

Low-temperature paint removal exploits the shrinkage and embrittlement of paint 

The mechanical methods and low-temperature paint removal are restricted to a few special areas of application. Chemical and thermal methods have their specific advantages and disadvantages, not only as regards paint removal but also with respect to environmental pollution by paint slurry, rinse water, effluent, and waste air. 

Paint Removal from Wood and Mineral Substrates [6.4] 

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