Repainting steel structures involves stripping off the current paint before repainting. Typical construction methods include the blasting method and the keren method, but recently they are no longer used in urban and residential areas due to environmental issues such as noise and dust generation, and the stripping agent method has been chosen instead.
The stripping agent method infiltrates the inside of the paint film and causes it to swell due to a chemical reaction, so it takes a long time for the paint to peel off and is affected by the surrounding temperature. Particularly during unseasonable weather or in the winter, there are times when chemical reactions do not proceed as expected, making it difficult to develop a new paint removal method. Therefore, we focused on a paint removal method (IH method) that uses induction heating technology.
(The vermilion color is a rust-preventive paint.)
Induction heating is a technology used in IH cooking heaters, in which the heating coil itself does not generate heat, but the steel material near the coil itself. When this induction heating coil is brought close to the surface of a painted steel plate, the heat generated softens the paint film, weakening its adhesive strength and allowing it to be peeled off into a sheet. The IH construction method uses equipment without moving parts, so there is no noise, it is not affected by weather or temperature, and the generation of dust can be minimized.