earticle

영어

The laser amplifies the strong light by collecting and using the energy of electrons to generate high heat, and uses it to cut and polish. Laser technology is used throughout industries such as printers, clothing, medicine, and military, but we are also faced with laser-related fires around us. Especially in industries that use lasers, fires often occur in CNC processes that process iron, acrylic, or wood, which usually occur during lunchtime or when there are no people, causing initial suppression to fail. It also leads to large-scale fires, making it difficult for fire inspectors to determine the cause of the blaze. In this study, the characteristics of laser beams in the CNC process were investgated, and the probability of fire occurrence that may occur in the CNC process. The actual laser showed a similar working form to welding and cutting that it produces high-temperature light and heat. Although the analysis of the processed products, attached films, and adhesives, which were generally thought to be the initial ignition part, determined that they were both combustible material and dangerous substance under the Hazardous Substances Safety Control Act, the reenactment test was conducted under conditions similar to the actual fire in the CNC process. As a result, contrary to expectations, the film and adhesive were not burned, and the first to ignite in the residue, dust, and dust falling into the bottom of the CNC machine, starting combustion. Therefore, it is important to have safety facilities such as overheating sensors and fire extinguishers installed in the machine, but removing combustibles such as impurities and dust from the bottom of the CNC machine produced during the production process should be preceded first of all to prevent fire.